United States
epvironmonta. Prctacrion
Agency
Region 8
1360 Lincoln Street
Denver, Colorado £0235
EPA-908/2-81 00'
October, 155!	
SurvetlUnce ard Analysis Division Data Analysis 3'anch
Water
Quality Trends In
Region VIS!
1980 Data

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EPA-908/2-81-001
U.S. Environmental Protection Agency
WATER QUALITY TRENDS
IN REGION VIII
(1980 UATA)
Data Analysis Branch
Surveillance and Analysis Division
Denver, Colorado
October 1981

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DISCLAIMER
this report has been reviewed by Che Surveillance and Analysis
Division, U S Environmental Protection Agency Region VIII, and approved
for publication Mention of trade names or commercial, products does not
constitute endorsement or recommendation for use
Document is available to the
Information Service, Springfield.
public through the National Technical
Virginia 22161.

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ABSTRACT
Ambient water monitoring data collected in calendar year 1980 and entered
into the STORET water quality file are analyzed for the six states in Region
VIII (Colorado, Montana, North Dakota, South Dakota, Utah, Wyoming).
Locations where probable beneficial use impairments exist are identified and
trends in pollutant concentrations are cited.
Probable use impairment and pollutant severity are determined by
comparing observed concentrations to recognized criteria (generally those
included in the state water quality standards). Nonparametric statistical
tests which detect significant differences between two populations are
utilized to show pollutant trends.
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TABLE OF CONTENTS
Page
Abstract		1
Table of Contents	 n
List of rigures	 m
List of Tables	 iv
SECTION I
Introduction		3
Summary and Conclusions		7
Analytical Procedures		8
Water Quality Standards		11
SECTION II
REblONAL WATER QUALITY SUMMARY
Regional Overview of Water Quality		17
Impairment to Aquatic Life		18
Impairment to Public Water Supply		21
Impairment to Primary Contact Recreation		24
Impairment to Secondary Contact Recreation		27
Impairment to Irrigation		30
Impairment to Livestock Watering		33
Metals		33
SECTION III
STATE WATER QUALITY REPORTS
Colorado		4U
Montana		56
North Dakota		62
South DaKota		73
Utah		83
Wyoming		93
APPENDIX
Use Impairment Criteria Matrix	 107
Typical Computer Output of Analytical Results	 112
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LIST OF FIGURES
F iqures	Page
1.	Monitoring Locations Displaying
The Highest Values for Impairment
To Aquatic Life		19
2.	Monitoring Locations Displaying
The Highest Values for Impairment
To Public Water Supplies...		22
3.	Monitoring locations Displaying
The Highest Values for Impairment
To Primary Contact Recreation		2b
4.	Monitoring Locations Displaying
The Highest Values for Impairment
To Secondary Contact Recreation		28
5.	Monitoring Locations Displaying
The Highest Values for Impairment
To Irrigation		31
6.	Monitoring Locations Displaying
The Highest Values for Impairment
To Livestock Watering		34
7.	Monitoring Locations where
High Concentrations of Metals
were Observed	 36
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LIST OF TABLES
Table	Page
1.	Stations Where High Concentrations of Metals
Were Observed in the Surface Waters	 35
COLORADO
2.	Summary of Impairment Values
Ranked According to Use	 40
3.	Significant Water Quality Trends	 52
MONTANA
4.	Summary of Impairment Values
Ranked According to Use	 56
5.	Significant Water Quality Trends	 60
NORTH DAKOTA
6.	Summary of Impairment Values
Ranked According to Use	 62
7.	Significant Water Qua!ity Trends		70
IV

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LIST Or TABLES (Continued)
Table	Page
SOUTH DAKOTA
8.	Summary Of Impairment Values
Ranked According to Use	 73
9.	Significant Water Quality Trends	 80
UTAH
10.	Summary of Impairment Values
Ranked According to Use	 83
11.	Significant Water Quality Trends	 90
WYOMING
12.	Summary of Impairment Values
Ranked According to Use	 93
13.	Significant Water Quality Trends	 100
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SECTION I
1

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2

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INTRODUCTION
Purpose and Developmental Background
The Annual Trend Report presents analytical summaries of water quality
data collected during the previous yea>". It is envisioned that these
summaries will provide the basics necessary to aid and support future water
quality management activities in the Region.
Over the past few years the Data Analysis Branch in Region VIII/EPA has
attemDted to progressively develop and refine techniques and procedures to
express or indicate the relative quality of regional streams.
During the past decade, the type of simplified interpretive technique
most prominent among those concerned with the analysis and presentation of
water quality, has been the aggregated numerical index. Such a numerical
index typically consists of an equation that combines and/or transforms data
on one or more individual parameters into a single index value.
Region VIII 1978 Trend Document
The development of the Region VIII process had its beginning with the
production of the 1978 document, "Water and Air Quality Trends in Region
VIII." The report utilized a water quality index designed by William Cogger
primarily in response to the Water Quality Assessment requirements placed on
the region by Section 305(b) of P.L. 92-500.
The Cogger index utilized some of the conceptual ideas developed by:
(1)	The National Sanitation Foundation (NSF) in its Water Quality
Index described in the publication "Water Quality Index
Application in the Kansas River Basin" and
(2)	Region X of EPA in its publication "Water Quality Index."
Further tempering of these concepts with experience and knowledge of
Region VIII geography, geology, hydrology and land use allowed the emergence
of a simple, easily understood method for qualifying regional streams. Water
quality parameters were separated into four groups: An oxygen related group -
consisting of DO and BOD; a bacteria group - consisting of fecal and total
coliforms; a nutrient group - consisting of nitrogen and phosphorus parameters
and; a solids group consisting of TDS components and turbidity. Utilization
of the index requires that the individual observations of selected water
quality parameters at a sampling point be compared with appropriate criteria
and the counts of violations and of total observations be summed by groups to
compute total group percentage violations. These percentages are then
aggregated assuming equal weightings to produce a single value, the index.
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These techniques were useful at the time mainly because they placed on
the staff the important requirement of getting familiar with and organizing
stations, stream segments and the various water parameters being collected
throughout the region. On the other hand the following problems and
weaknesses were found to be inherent in the index method:
(1)	Traditionally only those parameters associated with
water treatment facilities had been included for
index analysis while other stream pollutants which
might impair beneficial uses had been neglected.
(2)	All of the aggregation techniques which had been
used to develop numerical indices are inaccurate or
at least misrepresentative because adequate
information to support parameter weighting and
chemical and physical reactions are not available.
(3)	Only one criteria value was used for each parameter
to determine violations when in actuality parameter
criteria differ according to the uses that a stream
is subject to.
Region VIII 1979 Trend Document
A different approach was used to describe water pollution severity in the
1979 publication "Water and Air Quality Trends in Region VIII" (1978 data).
In the 1979 report additional parameters were analyzed, the most significant
of these being certain heavy metals, cyanide and ammonia. An effort was also
made to determine the level of trophic potential based on ratios of nitrates
and phosphates at stations where the two were found to be common in a water
sample. A scheme developed by Region X for combining parameters into
meaningful pollutant groups was modified for Region VIII use. This technique,
which attempts to relate the concentration of various water parameters to a
common numerical scale of quality, utilizes several straight line "severity
curves." These curves, which present Water Quality Index (WQI) values as a
function of observed parameter concentration, were developed by the Region X
staff and exhibit the same general family characteristics and shape as the
traditional curves that were originally developed for use with the National
Sanitation Foundation (NSf) Water Quality Index.
In the quality analysis every parameter measurement was graphically
converted to it's WQI, averaged and summed on a monthly basis. The WQI varied
from zero to one hundred. A WQI less than 20 represented generally acceptable
quality. The range from 20 to 60 signified exceedence of water quality
standard/criteria and a WQI greater than 60 represented exceedences of a
severe nature.
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Instead of aggregating the WQI's of the individual parameters into a
single index, average yearly WQI's were computed for each parameter at every
station and ranked. Based on these rankings it was possible to determine the
most critically impaired stations and parameters in the region.
The most glaring weaknesses in this procedure were inherent in the use of
the severity curves. There generally exist only two reliable points on any of
the curves, at the coordinate origin where the concentration is equal to or
approaches zero and at a WQI value of 20 where the concentration (by
definition) is equal to the standard/criteria value for the parameter group.
Estimates of parameter severity at WQI's greater than 20 are essentially
conjecture. Additionally, only one severity curve was developed for each
parameter when actually many of the parameters should be compared to several
different criteria values depending on the various uses individual streams
must support.
During early 1980, an opportunity was presented to develop and utilize
modified severity curves when the regional office volunteered to analyze data
for inclusion in the South Dakota 305(b) submission. A new group of severity
curves were drawn to coincide with the criteria necessary to support the
various beneficial uses designated for South Dakota streams and a complete
analysis was made on all 1979 data in the STORET file. Although the curves
were modified and adjusted for this exercise the inherent problems remained.
The 1980 Trend Document
Severity curves were abandoned for the analysis of 1979 regional water
data. In their stead, state-by-state matrices containing criteria for the
various parameters and beneficial uses were developed. In selecting the
elements used to construct these matrices first priority was given to state
developed standards and criteria. For those instances where certain
parameters and uses were not addressed by the state, standards or criteria
recognized by EPA as appropriate were used to complete the matrix.
In the 1980 severity analysis each parameter measurement was compared to
the appropriate state criteria and ordered by station and month. Measurements
exceeding the standard by at least 15% were reported. Measurements exceeding
by 85% or more were considered as critical. The product of the percent
exceedence and the probability of exceedence gave an acceptable measure of
parametric quality.
Although the complete matrix of uses and criteria was developed, all uses
were not considered in the analysis. Because states differ considerably in
degree of completion of stream segment classification, standards development
and use designation, criteria values for only one use was used for
computation. In each case the use criteria value which was most restrictive
was used "Across the Board."
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The 1981 Trend Report
Computer programs have been modified to process the 1980 STORET Data and
a refined and enlarged criteria matrix is now available. Information at each
station is now analyzed for all uses but includes only parameters which might
impair the use. The basic computer output provides the following information
for each beneficial use at each sampling station.
The average monthly multiple of criteria exceedence for each
parameter.
The average annual multiple of criteria exceedence for each
parameter (only those parameters that have potential for beneficial
use impairment).
The probability of criteria exceedence for each parameter.
An impairment level due to each parameter.
An average impairment level affecting the use.
An impairment level for the station.
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SUMMARY AND CONCLUSIONS
Regional trend analyses comparing the years 1975-1977 vs. 1978-1980 for
all pertinent water quality parameters available in the STORET data base,
indicate that 321 of 759 monitoring stations processed, experienced
significant changes (improvement or degradation) for at least one parameter
group. Of the stations which exhibited significant trends and also displayed
concentrations generally considered at critical levels (in excess of 85% above
criteria) during 1975-80, 42 were round to have improved and 66 were degraded.
Quality analyses based on probable beneficial use impairment of surface
waters revealed that:
64% of	monitoring	stations	have Aquatic Life impairments.
73% of	monitoring	stations	have Public Water Supply impairments.
44% of	monitoring	stations	have Primary Contact Recreation impairments.
13% of	monitoring	stations	have Secondary Contact Recreation impairments.
28% of	monitoring	stations	have Irrigation impairments.
2% of	monitoring	stations	have Stock Watering impairments.
Although all monitoring points were analyzed for each beneficial use, it
is recognized that only certain uses are designated in the individual state
standards. This approach was taken because of the wide variation in uses and
criteria submitted by states.
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ANALYTICAL PROCEDURES
Water quality data tor the years 1975-80 and representing 759 active
monitoring stations in the six States of Region VIII were retrieved from
STOKET (EPA's computerized water quality data base) and screened through
computerized trending techniques. Fifty STORET water quality parameters which
fall in the general categories of bacteria, nutrients, dissolved solids,
suspended solids, aesthetics, and inorganic toxicants were selected for this
trend study and were analyzed in a two step process, first, to determine the
effects of pollution on water use categories, each observed value was compared
to a criterion value supporting the particular use and then averaged on a
monthly basis. Multiples of criteria exceedence were averaged and reported.
A probability of exceedence statistic was calculated for each parameter (ratio
of criteria violations to total observed). A "Use Impairment Value" was then
calculated. This value, which focuses on locations where probable impairments
exist, constitutes the basis for rating the quality of regional streams.
Secondly, to determine pollution trends, the 15th, 50th (median) and 85th
percentile values for two time periods were compared for each parameter with
sufficient data. A standard statistical test, requiring at least six
observations for a parameter in each time period was used to test for a
significant difference between the two time periods. Significant changes in
the 50th percentile measurements are generally indicative of overall changes
in concentrations, while significant changes in the 85th percentile
measurement (15th percentile for dissolved oxygen) are generally indicative of
changes during critical periods. The procedures for determining improvement
or degradation is described in the trend analysis section.
Use Impairment Analysis
Each observed data value was compared to a criterion value established
tor each of six use categories. The criteria-use matrix and the reference
sources are cited in the Appendix. The data values that exceeded the criteria
levels were reported as multiples of the applicable criterion. A "Yearly
Average" was then determined for these data values and a "Probability of
Criteria Exceedence" was calculated based on the ratio of criteria violations
to total observations recorded for each parameter. A "Severity" value was
determined as the product of the "yearly average" and "probability of
exceedence." Finally, a "Use Impairment Value" was computed by taking the
average of severity values for each parameter in the use category. This
impairment value provides the primary basis of analysis for this report.
These values were summed over all uses to give an impairment value for the
station. An example of a typical computer output is included in the Appendix.
Trend Analysis
The statistical test ("The Median Test," Practical Nonparametric
Statisties, W.O. Lonover, John Wiley & Sons, Inc., New York, 1971, pages
167-172.) that was used to analyze water quality trends is a nonparametric
technique for testing the hypothesis that random samples from two or more
populations have the same median. The test is a special application of a
chi-square contingency table test with fixed marginal totals. The same test
can be used against other percentiles than the 50th but the discussion here
describes only the median.
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Given k populations each with a random sample of size n]_, i=l,2---k, a
test statistic can be constructed to test the hypothesis:
Hg: all k populations have the same median.
H/\: at least two populations have different medians.
The test statistic is computed from the 2xk contingency table:
Sample
1
2
3
. . . k
Total
Medlan*
Oil
°12
°13
• • • °lk
a
Medi an*
°21
°22
°23
... 02k
b
Total
nl
n2
n3
• • • nk
N
^ ^ V
r = T 2
ab .-i

The test for the statistic assumes:
The samples are random.
The samples are independent of each other.
The measurement scale is ordinal.
If all populations have the same median, they have the same
probability of an observation exceeding the median.
A large sample approximation is used to approximate T. The critical
region of approximate size d corresponds to values of T greater than x^-ct
the (1 - C* ) quantile of a chi-square random variable with k-1 degrees of
freedom. If T exceeds x-jCC reject rig; otherwise accept Hg. The author
notes that the approximation may not be satisfactory if more than 20% of the
n-, are less than 10, or if any of the n-, are less than 2. It further
qualifies this rule of thumb for larger numbers of samples k.
*Refers to overall median of the combined samples
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The test was applied to each pollutant parameter at every station in the
Region not only tor the median but also the 15th, and 85th percentiles. Data
observed during the years 1975 through 1977 comprise one test population and
data for the years 1978-80 made up the other population. Each sample was
required to have at least six observations. This technique made it possible
to detect statistically significant differences between the two time periods.
The following procedures were used to determine if the observed
significant differences represented an improvement or a degradation:
Examine the 15th and 50th percentile for dissolved oxygen - for all
other parameters examine the 85th and 50th percentile.
If a significant difference between two time periods for either of
the percentile statistics exists and both percentile statistics
decrease from the first time period to the second, designate this as
improvement. (For oxygen this is a degradation).
If a significant difference between two time periods for either of
the percentile statistics exists and both percentile statistics
increase from the first time period to the second, designate this as
degradation. (For dissolved oxygen this is an improvement).
It was assumed that the samples were random and independent of one
another. Given that these data are time series data, taken at irregular
intervals, affected by seasonal cycles, etc., certain modifications of this
technique might be advisable in future applications.
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WATER QUALITY STANDARDS
Section 303(c) of the Clean Water Act (CWA) and attendant regulations and
guidelines require states to review and revise their water quality standards
at least once every three years. Water quality standards are an essential
part of the State water quality management program. State water quality
standards:
o Publicly define the State's water quality objectives, and hence form
the basis of State and Areawide 208 planning and State program Plans;
o Serve as the basis for determining National Pollution Discharge
Elimination System (NPDES) permit effluent limitation for pollutants
not specifically addressed in the effluent guidelines, or secondary
treatment standards or for pollutants for which effluent guidelines
are not stringent enough to protect desired uses;
Serve as a basis for judgement in other water quality related
programs including the priority system for Section 201 Construction
Grants, water quality inventories, control of toxic substances,
thermal discharges, and dredge and fill activities;
The Clean Water Act (CWA) established an interim goal of achieving,
wherever attainable, water quality which provides for the protection and
propagation of fish, shellfish, and wildlife and provides for recreation in
and on the water by July 1, 1983. The purpose of the water quality standards
program is to designate stream uses and develop standards which protect those
uses. Under the CWA, EPA has the authority to:
o Review water quality standards to ensure consistency with EPA
criteria and designated stream uses (Section 303(c)).
o Develop, propose and promulgate standards under Section 303(c)(4)(A)
where it finds state revisions inadequate.
o Take affirmative action to issue Federal Standards. Under Section
303(c)(4)(B). EPA may propose and promulgate Federal Standards "in
any case" where a revised "or new" standard is necessary to meet the
requirements of the Act.
State water quality standards consist of three basic elements. These
are: (1) designated beneficial use(s), (2) criteria which are numeric and
narrative, and (3) an antidegradation policy.
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States are encouraged to classify all surface waters for existing and
potential future beneficial uses. Beneficial uses can include drinking water
supply, navigation, agricultural, industrial, recreation and aquatic and
terrestrial life protection. The U.S. Environmental Protection Agency
strongly encourages states to classify all surface waters for aquatic life use
and recreation in and on the water, wherever attainable.
Water quality standards contain the States' policy on antidegradation.
Antidegradation policies indicate that:
o Existing instream beneficial uses must be maintained and protected;
o Existing high quality water must be maintained at existing high
quality unless the State decides to allow limited degradation where
economically or socially justified. If limited degradation is
allowed, it cannot result in violation of water quality criteria
which describe the base levels necessary to sustain the national
water quality goal of protection and propagation of fish, shellfish
and wildlife and recreation in and on the water;
o Serve as a basis for evaluating and, where necessary, modifying best
management practices tor control of nonpoint sources;
o Contain the State's antidegradation policy.
o In all cases, water which constitute an outstanding national source
must be maintained and protected.
Water quality criteria specify concentrations of water constituents
which, it not exceeded, are expected to support the applicable use designation
to which a stream or lake is assigned. Such criteria are derived from
scientific data obtained from laboratory or in situ observations which depict
an organisms responses to a defined stimulus or material under identifiable or
regulated environmental conditions for a specified time period. They are
intended not only to protect essential and significant life in water, as well
as the direct users of water, but also to protect life that is dependent on
lite in water tor its existence, or that may consume intentionally or
unintentionally any edible portion of such "life.
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The water quality criteria used to develop this report are based on
several sources, the principal source being tlie State water quality
standards. In these cases where existing State water quality standards were
parametrically limited, other criteria references were utilized and are
identified as such within this report (see Appendix). These criteria
reterences include the "Red Book", "Blue Book", "breen Book", Interim Primary
Drinking Water Regulations and the 64 criteria documents for the "priority
pollutants". It should be noted that the values from those reterences are
only guidelines and cannot be considered as standards. They simply provide a
point of reference about which the relative water quality for a particular
station or change therein can be judged. An exceedence of a criterion should
not be construed to imply that a given beneficial use is being impaired. This
type of demonstration can only be accomplished through intensive
investigations. Conversely, some States, through intensive research,
established water quality standards for certain parameters which require
levels lower than those used in this report. This is especially true of
nutrients. The values for the nitrogen and phosphorus series used in the
report are only very rough approximations of the conditions which might be
indicative of a nutrient enriched environment. The U.S. Environmental
Protection Agency strongly advocates the use of site-specific limnological
surveys to establish nutrient standards.
The criteria tor public wate^ supplies derive trom	the Interim Primary
Drinking Water Regulations. These regulations indicate	that the criteria
apply at the end of the tap. This report has, however,	used them to
approximate the quality of raw water sources classified	as public water
supplles.
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SECTION II
REGIONAL WATER QUALITY SUMMARY
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REGIONAL OVERVIEW Of WATER QUALITY
This section summarizes and reports on the most significant water quality
problem areas for each state based on probable use impairments which were
computed from the 1980 data resident in STORET. Despite the fact that this
document reports _aTJ_ possible use impairments at every station it should be
noted that only uses designated by the state can be considered significant.
The beneficial uses that were considered for this report are:
1.	aquatic life (cold water)
2.	aquatic life (warm water)
3.	public water supply
4.	primary contact recreation
5.	secondary contact recreation
6.	irrigation
7.	stock watering
Impairment values for each use and rankings by use category are listed
tor all stations that were analyzed (see Section III, State Water Quality
Summaries).
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Impairment to Aquatic Life
Monitoring locations, where observed water quality concentrations exceed
recommended criteria tor sustaining aquatic life, are illustrated on the map
in Figure 1. Stations, in each state, which exhibited the highest average use
impairment values were plotted.
The highest aquatic life impairment values noted for each state are as
follows:
Colorado	Impairment Value
1.	Turkey Cr above Teller Reservoir	46.30
2.	Yellow Cr near White River	43.37
3.	Apishapa River at Aguilar	43.24
4.	Wilson Cr near Axial	32.75
5.	Little Fountain Cr near Fountain	28.28
6.	Fountain Cr near Pinon	26.63
7.	S. Platte River at 88th Ave., Denver	19.92
8.	Purgatoire River at Madrid	16.50
9.	S. Platte River at 160th Ave, Denver	14.30
10. Roan Cr near De Beque	13.64
Montana
1.	Muddy Cr at Vaughn	84.20
2.	Powder River at Moorhead	25.54
3.	Muster Cr near Kinsey, MT	24.94
4.	Powder River near Locate	20.87
5.	Custer Cr near Kinsey	10.43
6.	Cherry Cr near Terry	9.49
7.	Musselshell River near Roundup	9.40
8.	Glendive Cr near Glendive	9.21
9.	Big Sand Coulee at WY-MT line	7.87
10. Musselshell River at Mosby	3.44
North Dakota
1.	Little Missouri River near Watford City
2.	Rush River near Harwood
3.	Apple Cr near Menoken
4.	Beaver Cr near Linton
5.	Antelope Cr near Abercrombie
6.	Tongue River near Pembina
7.	James River near Oakas
8.	Cedar Cr at Raleigh
9.	Cottonwood Cr at Ca Moure
10. Souris River near Westhope
14.49
9.07
5.92
4.74
4.24
3.45
2.67
2.52
2.27
2.16
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Figure 1. Monitoring Locations Displaying the Highest Values for
Impairment to Aquatic Life.
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Impairment to Aquatic Life (continued)
South Dakota
1.	Moccasin Cr
2.	White River near Oacoma
3.	White River nead Kadoka
4.	Cheyenne River at Eagle Butte
5.	Cheyenne River at Cherry Creek
6.	Belle Fourche River at Elm Springs
7.	Big Sioux River at Brandon
8.	Big Sioux River at Sioux Falls
9.	Bad River near Ft. Pierre
10. Cheyenne River near Wasta
Utah
1.	Muddy Creek near Hanksville
2.	Willow Creek near Ouray
3.	Virgin River near St. George
4.	Dolores River at Mouth
5.	Price River at Woodside
6.	Kanab Creek at UT-AZ line
7.	Virgin River at Littlefield, AZ
8.	Dirty Devil River above Poison Springs
9.	White River near Ouray
10.	San Juan River near Bluff
Wyonm rig
1.	Middle Fork Fifteen-Mile Cr near Worland
2.	Fitteen-Mile Creek near Worland
3.	Salt Wells Creek near Salt Wells
4.	Powder River at Arvada
5.	East Fork Nowater Creek near Colter
6.	Bitter Creek near Salt Wells
7.	Vermillion Creek near Hiawatha, CO
8.	Caballo Creek near Piney
9.	Dry Creek at Greybull
10.	Blacks Fork near Lyman
Impairment Value
36.96
25.59
25.79
20.30
19.53
15.30
14.96
13.06
12.76
10.67
100.00
37.76
29.13
26.45
21.70
18.77
16.72
16.63
15.42
12.01
51.24
60.42
56.69
53.33
43.21
22.02
17.13
14.13
13.50
9.07
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Impairment to Public Water Supply
The map on the next page (Figure 2) illustrates where the highest Public
water Supply Impairment Values were observed. In most cases the impairment
values were low and generally indicated suitability of water for drinking
purposes.
High impairment values were observed at the following stations (an
asterisk next to a station indicates that the stream segment has been
designated for drinking water use):
Colorado	Impairment Value
1.	Apishapa River at Aguilar	41.92
2.	Turkey Creek above Teller Reservoir	30.53
3.	Rio brande River near Creede	26.51
4.	Rio Grande River near Wagonwheel Gap	26.61
5.	Conejos River near Magote	26.61
6.	Blue River above Dillon Reservoir	25.81
7.	San Juan River above Pagosa Springs	25.81
8.	Rio Grande River near Del Norte	25.81
9.	Florida River below Lemon Reservoir	25.81
10.	Purgatoire River near Segundo	25.59
Montana
1.	Powder River at Moorhead	25.50
2.	Muster Creek near Kinsey	14.05
3.	Tongue River at Tongue River Dam	13.08
4.	Custer Creek near Kinsey	11.94
5.	Rosebud Creek at Mouth	11.39
6.	Yellowstone River near Miles City	8.47
7.	Glendive Creek near Glendive	8.02
8.	Powder River near Locate	7.21
9.	Musselshell River near Roundup	6.03
10.	Amells Creek near Forsythe	5.94
North Dakota
1.	Tongue River at Akra	19.53
2.	Heart River near South Heart	10.72
3.	Buffalo Creek near Gascoyne	7.12
4.	Little Missouri River near Wattord City	7.09
5.	Missouri River at Bismarck	5.99
6.	Missouri River at Garrison Dam	5.25
7.	Deep Creek near Ami don	4.97
8.	Knife River at Hazen	4.46
9.	Little Missouri River at Marmarth	4.32
10.	Sheyenne River below Baldhill Dam	4.09
21

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Figure 2. Monitoring Locations Displaying the Highest Values for
Impairment to Public Water Supplies.
22

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Impairment to Public Water Supply (continued)
South Dakota	Impairment Value
1.	Moccasin Creek	21.78
2.	Whitewood Creek at Deadwood	10.34
3.	Horse Creek near Vale	3.82
4.	Iron Creek at Hwy 14A	3.79
5.	North Fork Rapid Creek*	8.79
6.	Annie Creek at Hwy 14A	/.41
7.	Rapid Creek at Black Fox Campground*	7.35
8.	White River near Oacoma	6.92
9.	Cheyenne River at Cherry Creek	6.30
10.	James River at Columbia*	6.29
Utah
1.	Bitter Creek near Bonanza	16.73
2.	Willow Creek near Ouray	15.08
3.	White River near Ouray	8.38
4.	Price River at woodside	7.89
5.	Pariette Draw near Ouray	5.83
6.	San Juan River at Shiprock	5.10
7.	San Rafael River at Campground	4.85
B.	Muddy Creek at Old U24 Xing	4.80
9.	Dolores River near Mouth	4.68
Wyoming
1.	Salt Wells Creek near Salt Wells	23.68
2.	E. Fork Nowater Creek near Colter	15.67
3.	Antelope Creek near Teckla	14.48
4.	Bitter Creek near Kanda	10.10
5.	Powder River at Sussex	9.29
6.	Big Sandy Creek near Eden	8.94
7.	Vermillion Creek near Hiawatha	8.94
8.	Muddy Creek near Hampton	8.71
9.	Belle Fourche River near Pine/	8.68
10.	Kill pecker Creek near Rock Springs	8.55
23

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Impairment to Primary Contact Recreation
The map illustrated on Figure 3 shows stations where high impairment
values for primary contact recreation were observed. The three parameters
which were reviewed and which most likely would impair this beneficial use are
fecal coliform bacteria, phosphorus, and pH.
Monitoring stations where high impairment values were noted are:
Colorado	Impairment Value
1.	Turkey Creek above Teller Reservoir	77.70
2.	Wilson Creek near Axial	55.00
3.	Bear Creek at Mouth	51.41
4.	Little Thompson River near Mil liken	43.36
5.	Fountain Creek near Colorado Springs	35.47
6.	St. Vrain Creek below Longmont	34.98
/. Cache La Poudre River near Greeley	29.73
8.	Little Fountain Creek near Fountain	25.00
9.	S. Platte River at Henderson	22.43
10. S. Platte River at 160th Ave., Denver	20.78
Montana
1.	Muster Creek near Kinsey	23.14
2.	Custer Creek near Kinsey	8.69
3.	Powder River at Moorhead	7.81
4.	Yellowstone River at Huntley	6.44
5.	Glendive Creek near Glendive	6.25
6.	Powder River near Locate	5.84
7.	Big Sand Coulee at WY-MT line	5.08
8.	Big Muddy Creek near Antelope	4.08
9.	Clear Creek near Hoyt	4.00
10. Mizpah Creek near Mizpah	2.67
North Dakota
1.	Apple Creek near Menoken	5.92
2.	Beaver Creek near Linton	4.74
3.	3eaver Creek near Finley	4.30
4.	Antelope Creek near Abercrombie	4.24
5.	Souris River near Westhope	3.88
6.	Red River - Pembina	3.85
7.	Little Missouri River nr Watford City	3.55
8.	Red River of The North at Halstad, MN	3.44
9.	Bois De Sioux River - Wahpeton	2.73
10. James River near Oakes	2.67
24

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5
wcV


Figure 3. Monitoring Locations Displaying the Highest Values for
Impairment to Primary Contact Recreation.
25

-------
Impairment to Primary Contact Recreation (continued)
South Dakota	Impairment Value
1.	Moccasin Creek	82.87
2.	White River near Kadoka	51.51
3.	Cheyenne River near Plainview	44.19
4.	Rapid Creek near Rapid City	43.84
5.	Big Sioux at Sioux Falls	32.87
6.	Vermillion River near Wakonda	24.37
7.	Big Sioux River near Brookings	23.73
8.	White River near Oacoma	20.50
9.	Cheyenne River near Eagle Butte	20.30
10. S. Fork whetstone River	18.67
Utah
1.	Willow Creek near Ouray	22.00
2.	Santa Clara River near St. George	16.72
3.	Virgin River at Littlefield, AZ	16.72
4.	Jordan River at 5th North, SIC	14.32
5.	Spring Creek blw Lehi Mill Pond	14.32
6.	S. Willow Creek at USFb Boundary	14.32
7.	Jordan River at 1700 South, SLC	12.38
8.	Price River near Wellington	11.31
9.	Price River at Woodside	11.31
10. breen River at breen River	5.97
Wyomi nq
1.	Middle Fork Fitteen-Mile Cr nr Worland	99.92
2.	Salt Wells Creek near Salt Wells	94.17
3.	E. Fork Nowater Creek near Colter	92.80
4.	Fifteen-Mile Creek near Worland	83.92
5.	Bitter Creek near Kanda	76.11
6.	boose Creek below Sheridan	52.32
7.	Killpecker Creek at Rock Springs	37.71
8.	Vermillion Creek near Hiawatha	13.24
9.	Hams Fork near Oiamondville	12.34
10. Muddy Creek near Hampton	8.66
26

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Impairment to Secondary Contact Recreation
Figure 4 contains a map of stations where high impairment values for
secondary contact recreation were observed. The same three parameters (fecal
coliform, phosphorus, and p^) were reviewed for this category as were used
for the primary contact recreation but the maximum allowable bacteria
concentrations are higher.
For each state the most severe situations were found at the following
stations:
Colorado
Impairment Value
1.	Bear Creek at Mouth
2.	Turkey Creek above Bear Creek
3.	Turkey Creek near Morrison
4.	Cherry Creek Lake near Outlet
5.	St. Vrain Creek below Longmont
6.	Cache La Poudre near Greeley
7.	Fountain Creek below Colorado Springs
8.	St. Vrain near Mouth
9.	Big Thompson River near Mouth
10. Cache La Poudre River near Ft. Collins
26.08
26.08
26.08
26.08
22.53
6.51
6.26
5.68
5.20
3.84
Montana
1.	Yellowstone River at Huntley
2.	Yellowstone River at Forsythe
3.	Muster Creek near Kinsey
2.72
2.72
1.85
North Dakota
1. Beaver Creek near Finley
1.00
South Dakota
1.	Moccasin Creek below Redfield
2.	Cheyenne River near Plainview
3.	Rapid Creek near Farmingdale
4.	Rapid Creek near Rapid City
5.	White River near Kadoka
6.	Vermillion River near Wakonda
7.	Big Sioux River near Brookings
8.	Big Sioux River at Sioux Falls
9.	Turtle Creek at Redfield
10. Moccasin Creek at Aberdeen
75.00
49.68
13.11
13.11
12.63
9.00
9.00
8.48
5.76
5.48
27

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Figure k. Monitoring Locations Displaying the Highest Values for
Impairment to Secondary Contact Recreation.
28

-------
Impairment to Secondary Contact Recreation (continued)
Utah	Impairment Value
1.	Jordan River at 1700 So., SLC	3.02
2.	Jordan River at 5th No., SLC	2.51
3.	Spring Creek below Lehi Mill Pond	2.51
4.	So. Willow Creek at USFS Boundary	2.51
5.	Granite Creek at Mouth of Canyon	2.51
6.	Grouse Creek at Lynn Rd. Xing	2.51
7.	Deep (Curlew) Creek near Snowville	2.51
3.	Provo River at US 189 Xing	2.51
9.	Provo River near Hailstone Jet	2.51
Wyoming
1.	Bitter Creek near Kanda	100.00
2.	Salt Wells Creek near Saxter	100.00
3.	Salt Wells Creek near Salt Wells	94.17
4.	boose Creek below Sheridan	55.80
5.	Middle Fork Fifteen-Mile Cr nr Worland	22.13
5.	Nowood River near Tensleep	15.04
7.	Nowood River at Manderson	15.04
8.	Paint Rock Creek below Hyattvi11e	15.04
9.	Greybull River near Basin	15.04
10.	Fitteen-Mile Creek near Worland	15.04
29

-------
Impairment to Irrigation
The map shown in Figure 5 illustrates the stations where the highest
irrigation impairment values tor each state were observed.
Selow are the stations where the highest impairment values for each state
were noted:
Colorado	Impairment Value
1.	Bear Creek at Mouth	26.08
2.	St. Vrain Creek below Longmont	11.31
3.	fountain Creek below Colorado Springs	6.36
4.	Little Thompson River near Mi 11iken	6.05
5.	Turkey Creek above Teller Reservoir	4.50
6.	Cache La Poudre River above Ft. Collins	3.84
7.	Cache La Poudre River near Greeley	3.48
8.	Apishapa River at Aguilar	3.12
9.	Big Thompson River near Mouth	2.49
10. St. Vrain Creek near Mouth	2.93
Montana
1.	Armells Creek near Forsythe	3.50
2.	Redwater River at Circle	3.38
3.	Redwater River near Vida	2.98
4.	Powder River at Moorhead	2.92
5.	Mizpah Creek near Mizpah	2.92
6.	W. Fork Poplar River near Bredette	2.79
7.	O'Fallon Creek near Ismay	2.73
8.	Yellowstone River at Huntley	2.72
9.	8ig Muddy Creek near Antelope	2.48
10. Hanging Woman Creek near Birney	2.47
North Dakota
1.	Buffalo Creek Tributary near Gascoyne	4.84
2.	Little Missouri at Marmath	3.08
3.	Deep Creek near Ami don	3.05
4.	Bear Den Creek near Mandaree	2.82
5.	Elm Creek near Golden Valley	2.70
5. Charbonneau Creek near Charbonneau	2.62
7.	Heart River near South Heart	2.27
8.	Big Muddy Creek near Almont	2.27
9.	Shell Creek near Parsnall	2.21
10. White Earth River at White Earth	2.11
South Dakota
1.	Moccasin Creek below Aberdeen	25.39
2.	Cheyenne River near Plainview	25.38
3.	Rapid Creek near Rapid City	13.11
4.	Big Sioux River near 3rookings	9.00
30

-------
je(
Figure 5. Monitoring Locations Displaying the Highest Values for
Impairment to Irrigation.
31

-------
Impairment to Irrigation (continued)
South Uakota	Impairment Value
5.	White River near Kadoka	8.61
6.	Big Sioux at Sioux Falls	5.16
7.	Vermillion River near Wakonda	4.61
8.	Whitewood Cree'< near Deadwood	4.01
9.	Turtle Creek at Redfield	2.93
10. Moccasin Creek at Aberdeen	2.85
Utah
1.	Bitter Creek near Bonanza
2.	Muddy Creek at Old U24 Xing
3.	Dolores River near Mouth
4.	Willow Creek near Ouray
5.	Pariette Draw near Ouray
6.	Price River near Woodside
7.	San Pitch River at U137 Xing
8.	Mjddy Creek near Hanksville
9.	Sevier River above Gunnison Send Reservoir
W.yorm ng
1.	Goose Creek below Sheridan	56.80
2.	Bitter Creek near Kanda	15.84
3.	Middle Fork Fifteen-Mile Cr nr Worland	12.17
4.	Fit teen-Mile Creek near Worland	8.68
5.	Salt Creek near Sussex	4.64
6.	Killpecker Creek at Rock Springs	4.25
7.	E. Fork Nowater Creek near Colter	4.10
8.	Hams Fork near Oiamondville	3.84
9.	Salt Wells Creek near Salt Wells	3.50
10. Big Sandy River near Eden	2.89
9.24
3.40
3.25
2.92
2.63
2.32
1.96
1.90
1.73
32

-------
Impairment to Livestock Watering
The map shown on Figure 6 illustrates the stations where the highest
livestock watering impairment values were observed.
The stations with the highest impairment values are:
Colorado	Impairment Value
1. Big Thompson River near Loveland	2.50
Montana
1.	Powder River at Moorhead	1.70
2.	Custer Creek near Kinsey	1.35
South Dakota
1.	Rapid Creek at Black Fox Campground	5.00
2.	N. Rapid Creek	5.00
3.	Annie Creek at Hwy 14A	5.00
4.	Iron Creek at Hwy 14A	5.00
5.	Cheyenne River at Cherry Creek	1.10
5. White River near Oacoma	1.09
Utah
1. Jordan River at 5th North, SLC	1.17
Wyoming
1.	E. Fork Nowater Creek near Colter	3.62
2.	Salt Wells Creek near Salt Wells	3.50
3.	Green River near LaBarge	2.40
4.	Little Powder River near Weston	1.45
Metals
Monitoring stations where high concentrations of metals were observed are
listed in Table 1 and shown on Figure 7. The list contains those stations
where at least three exceptionally high observations were found during the
yea**. In the case of Mercury all high values are reported.
33

-------
I
Impairment to'uCestocfw.tenn'g? H''9heSt Va,ues f°'
3k

-------
fAliLf 1. 51/VI IONS Will"RE HIGH CONCENTRATIONS
LCM-Nf
u>
Ui
s r A1 ION
no. or
OliS
"<1
Pemhina It al Walhalla, Nl)
I 00
2.7
Missouri R nr Will is ton, NO i
0 II
11.1

L 1111u Mis souri R nr



Wat ford City, NO
0 11
0 7

11 on Cr at llwy HA (SO)
1.00
!> .0

Rapid Cr at lilack Tox



Cdinpiji ound (SD)
1 DO
5.0

Anni(1 Cr at llwy 11A (SD)
1 .00
b 0

N Kainil Cr aL S Rapid Cr (SD)
1 00
5.0

Viiqin it at L ion National



Park Narrows (UT)
0. so
2 I
I'll
1 rnn Cr at llwy 11A (SO)
1.00
500

Jordan It at 5tli No, SLC, UT !
0 'jt>
I22

Little Powder R nr weston, WY !
0 67
11/
Cu
Clear Cr ahv Golden, CO 1
0.92
ll J

Animas It nr Si Ivor ton, CO
0 67
22

Clear Cr !>lw Idaho Spgs, It)
0 08
93

Iron Cr at llwy 11A (SO)
1.00
loo

While R at Month (Ul)
0 60
/5
Zn
CI oar Cr ahv Go 1 don, CO 1'
1 00
103/

Arkansas R b Iw Lcadv 11 le, CO
1 .00
538

Annnas It nr Silver ton, CO
1 00
523

Clear Cr hlw Idaho Spgs, CO
1 00
^ 109
lie
Clear Cr ahv Golden, CO
O.G/
33

Muddy Cr nr Hampton, WY
0.6/
7
rii
W11 son Ir nr A<1al, CO '
0 /5
(.9

1'icearti.e Ci at White R (CO)
0.6/
32

Little n isso'ir i R nr



Watford City, HI)
o ; i
106

Iron Cr tit llwy 11A (SO)
1.00
100

Illy Sioux R at Sioux falls.



SD
1.0(1
100

Willi' It al Mouth (Ul )
o.'.f.
6G
Cr
Iron Cr at llwy 11A (SO)
1 .00
1000
Od
I ron Cr at llwy HA (SO)
1 .00
bO
Excri.DLiicr
PltOI!A8 II. 11 Y
YI.AULY
AVG.
M'J
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miais wrre rmr.ruvti) in hie suk.:au viailks
iiuiu, u u, uimiii'.
flA A	CRIIEItIA	COIIl I XCLI IJL11 (1(1 li.lt IA
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"USE
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lOO-LlbJt
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.0
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10.0
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1.8
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1.
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280
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2 9
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b10
21

AL
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53
39

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360
20

AL
1 8
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100
19

Al
2 l
0
1
b
160
62

Al.
1.1
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f.
2900
308

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3.5
0
0
8
800
159

AL
2 8
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0
1
/30
523

AL
2 0
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11000
291

AL
b 9
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66.0
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66 0
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6.5
0
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6 5
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20 0
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6.9
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A
OG
Figure 7. Monitoring Locations where High Concentrations of
Metals were Observed.
36

-------
SECTION III
STATE REPORTS
37

-------
38

-------
STATE WATER QUALITY REPORTS
Two major tables have been developed for each state. The table, Summary
of Impairment Values Ranked According to Use Category, contains a listing of
all stations reviewed, the calculated average impairment value and rank for
each use. The last column of the table, severity, represents the total
aggregation of all use impairments for the station. The Water Quality Trend
Table lists stations where parameter groups exhibited significant changes over
time when subjected to statistical tests. This table shows quality
improvement or degradation in each parameter group and points out those groups
which are at or approaching critical levels. Data for 1975 thru 1977 were
compared to data for 1978 thru 1980 to determine trends.
39

-------
TAHLE 2. SUMMARY OF IMPAIRMENT VALUES RANKEU ACCORDING 10 USE.
r.iju/,1 i	aoiiai ic
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4.	2lLi1l,l'0l	'100007
AKK AiibA.S l I* hi* LA'JII.J CITY 1.40	». H >»
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5.	U 2i Mi	070W700'I
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-------
TAf'LF" 2 fCONT'LD. SUMMARY (IF IMPAIRMENT VALUES RANKED ACCOMUNG 10 USE.
- i t r i •) - i,i i ft i I i
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TABLE 2 (CONT'D). SUMMARY OF IMPAIRMENT VALUES RANKED ACCORDING TO USE.
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7ABLE 2 (CONT'D), SUMMARY OF IMPAIRMENT VALUES RANKED ACCORDING TO USE.
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TABLE 2 (CONT'Lt). SUMMARY Of IMPAIRMENT VALUES RANKED ACCORDING
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TABLE 2 (COMl'LO. SUMMARY OF IMPAIRMENT VALUES RANInEO ACCORDING TU USE.
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TAM.E 2 (CONT'D). SlIMMAKY OF XflTAIRMt-N r VALUE.S RANKELi ACCORDING TO USE..
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I ABLE 2 (CONT'D). SUMMARY OF IMPAIRMENT VALUES RANNEli ACCORDING TO USE.
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173. 2lUJli001	0 0 00 31
ST VMA1IJ Utl,Ui LOnCilUwl
174. 112'rfHl)	o'.72b450
ST. VK A 1 N LHKhh HI.I.IJW LUilt.MUIU",
17b. 2iLm,ooi	UOoO?y
sr. vraim i.t.vK -morn
17 6. 112111(1)	0O7J100 0
SI. VKA 111 I'HH K A I NUOlll, Nfc.Ak P
177. 1120HD	i)6724bo0
LLf'T IIAWP CKF.m ImI-AK HOIIl.l.l-1<, CO
1 7 H . 2 1 CIHiOo I	0(100 3 2
Ltn IIA rjl) CHI I.K .'IcAK uluiiv
179.	21 cm.Out	tiOOOji
RUUI.l'KH (R. Al III.DK W| f.U CO LiOfc
180.	11/M.nn	o(>7 Jysuii
HUllLDtM r 1(1 IK A r ,1110 I'll, II- All MMG.I'Ii'T, t
o. 'I b
1 liO
II. 1b
161
I .'">
i m
7.74
2 4 ~ "
2." 7
b I
2.?1
76
I . 7H
4 4 "
1 .S3
tut	
7. Ob
31 "
0.64
15? —"
3.b2
bl
1 .OH
1 20
7 .<»y
ci?
ft. I 3
ISO - -
0.0
lyf. -
i .71
121 -
1 .ho
4R
II. 3 * I
17?
'I. *ih
I b?
o.s.,
t b1
I .H /
74
7.7 1
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I .42
7 J
? .02
	fifl- " "
1	. bh
— BR - "
1.31
	 101 — "
7.0 b
?1 ~
0	. b 4
	15**	
2.66
	49-
2.06
	1?	
2	. 6 H
" 47
0.0
- i 7H -
o.o
1	77
1.2 1
KJ'i
1.7V
71
O.o
1 H"
17,32
31
17.12
3?
0.7'J
1 j 7
2.21
131
lb.il
37
l?.4H
•54 '
lb.71
-	38 —
4.72
	SI -
J.40
-	118-"
0 , II
—197 —
8.14
- <15- -
1 .7«
-M7-
4.Mb
- H4 -
1 .67
1 J*--
0.0
177
11.0/
Ob
10. 9b
r. 1
0.b2
1 70
0. SO
130
'). so
1 2'7
n.o
I 6S
0 . 0
-	106
4.31
3b
4. lb
- J«
4,2/
Jn
7.4 <
		
0.0
-I / I—
0	. "54
-1/H—-
34 ,4b
-	— h
3.14
	bl
17.30
" 1?
0.0
-	" 1 7h -
0.0
1	77
1 .40
•Jb
H.14
'2 1
I I. . H i
1 3
2 (..Oh
7
2f>.0H
3
2f, .OH
1
0.0
16fi "
1.12
32"
0.3 2
—	4ft
0.62
41 -
1 . 3?
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0.0
171 —
0.0
-	172-
27.53
"5
0.S1
" 47
¦;.6a
q -
b.68
-10 —
0.0
1 77
0,0
178
1 . 3«
2«
1.13
2?
0	. «
1	(, i
0.0
1 64
0.0
1 rf.
O.i'
1
0 . (-2
b2
0.32
- - lib -
0 ,h2
bl
0.7 b
-	- <11- -
0	. I)
1	71
(1.0
1 I '2
11.31
'2
0 .3 J
- 61—
2.43
1 1
O.Ob
-	77-
0.0
177
o.O
-	17*1
1.34
23
3.1)
H
0.0
I Ii I
0.0
1 64
0	. o
1	r.S
O.o
1 flh
0.1/
10
(I . 0 H
1 3
0.0
164
o. o
1 70
O.o
I 71
o.o
1 (?
0	. 0
1	73
0.0
1 / 4
0.0
1 7b
0.0
1 I 6-
0.0
1 7 7
O.o
1 /H
o. o
I 7V
O.o
III"
1	H . H 3
l! "
I.I.HJ
I. u
1 4 7
17. 70
'4 6
26.4U
4 /
2?.HZ
7?
24 . bM
60
2	1 . b (i
75
i ; ,-jy
97
1.61
- - 177
h 3 . l y
u
4.76
12 1
41.4^
l'»
1 ,H>J
1 7 I
O.O
1 4 4
1	4 . H «J
1 15
2^.2 /
b 4
2	l.Oii
fib
O
o
i-
o
zo
>
o
o
cp

-------
TABLE 2 (CONT'D). SUMMARY OF IMPAIRMENT VALUES RANKED ACCORDING TO USE
Mill,»T1C	/.uiJATlC	I'uM.rC
ST AT J l)N LUCAlfiM	I.IH I,ll-K	.JAi'm
COI.U rtA'lFK WAHrt WAll-R .MIl'PI. I fcS
181.	112WHD	oh730J0O
COAL CREK.K NEAR PLAINVU.W, CO.	".0 0,0	0.0
182.	112WH0	06734900
OLYMPUS Til Nil LI. AT l.AKh ESltS, CO	0.28 0.7H	0.0
183.	11 2 WRD	06 /36100
BIG THOMPSON K AHUVt UILLL TUNNEL, UR l)H	0.0 0. (I	0.0
184.	21COL001	000114
BIG THOMPSON NI-AH LUVfcLAiJO	1.87 2.11	18.87
- -	9 J 61	16
185.	112WHO	Ob 7414 80
BIG THOMPSON RIVLK AlJOVf LUVKLAND, CO.	0.53 0.53	0.42
186.	1I2WRO	06741510
BIG THOHP&IJN RIVfcK AT LllVlLAND, CU.	0.54 0,62	O.b?
187.	112WKD	06741*120
BIG THOMPSON RIVER HFl.OW I.OVfc.L AND , CD.	0.42 0.4H	0.67
I
188.	112WRD	06/44U00
BIG TlldMPbUIJ RIVKR A1 HUUTH, NEAR l,A t>AL	0. 12 0.0	2.54
Ol89. 21COLOO1	000028
J =
BIG TH'IMPMIN II FAR MOUTH	3.10 1 . fl1	10.04
"""	60 77	79
190.	112WRD	0*737500
HUR5F1 tKJTH RESERVOIR HtAH FUWT C	0.52 1.31	0.0
102
191.	112W|	0.R1
	 ~	124
197.	112WRD	0*752260
CACHE LA POUPHI- R I VtR A'l FORT CO	0.80 0.80	0.h5
198.	112WUD	06752270
CACHF LA PnUDNt RIVFh HbLllW FoRf	0.J9 0.4o	0, ft J
I'l< I • i A»<\	.SFiniirARy
run I act run aci	livi-siihk
RfCHFATKn. Hi CKKaI Illl I4R (<• Ai 11 in i-A'l c,IM iu, -IV
0.0	n. 70	0.0	0.0	0.0
36
0.44	0.0	0.0	0.0	1.no
o.ib	o.o	o.o	o.o	o.id
1.07	O.n	O.'J	?.5o ,>6.4^
104	1	"If.
0.0	0.0	O.o	0.0	1.4 H
0.0	0.0	O.o*	0.13 1.9«l
)ii 1G	75	9
O.O	0,0	0.09	0.0 l.fti,
S S	7b
0.0	0.0	0.3 4	0.0 l.Oll
J = J =	b-1	.1 =
IH. ii	S.20	2,99	0.0 (1.3/
11 11	9	it)
1.11	0.0	o.o	0.0 (.Ib
9R
0.0	n.o	0.0	o.o n.o
43.1b 21.85	6.115	n.o bH.»3
4^4	7
H.97 3.84	3. H 4	ii.0 J5.R4
19 10	6	;1
0.0 1.«4	O.o	0.21. I .fl7
6 12	6	3
o.o 3.114	u.O	0.0 o.o
13
o.O 3.R4	0.0	o.oy ?.bb
14	17
o.o 3.R4	O.o	0.1C 7.35
15	11
<>.0 3.H4	O.1'	O.o 1 .47
16

-------
TABLE 2 (CONT'D). SUMMARY Of IMPAIRMENT VALUES RANKED ACCORDING TO USE
AOllAriC	AOUAL'K.	t'DHl.IC
STATJUfl LOCATlljN LIU-	Lift"	WATI U
COI.U wAlhK	WARM WATF'K	SUPPLUS
199.	ll2U| rtATHU-K. Sf V
0.0
o.n
20.7 J
7
3. a 4
17
3, ft 4
If)
6.51
7
U . 2 /
*>C
0.44
" 57
3.4*
7
0 , II
().<>
3. I H
7.57
r
5 6.0(1
1 3

-------
Table 3. Significant Water Quality Trends
Stations and Parameters where Significant Statistical Differences were Observed.
Legend: I = Improving Trend; 0 - Degrading Trend; ¦' = Parameter concentrations are at high levels.
Station
Bacteria
Nitrogen
Phosphorus
Dissolved Sol ids
Suspended Solids
Afiuionia
Sulfate
Chloride
Calcium
Hardness
Meta1b
IRKANSAS RIVER BASIN









!
i
Arkansas R blw Leadville

D







|Cd=D
Arkansas R nr Malta





I
i
!
1
I ,
Arkansas R nr Salida


D*
I

D

|
I
ca=o
Arkansas R nr canon City


D*






-------
Table 3 (cont'd). Significant Water Quality Trends
Stations and Parameters where Significant Statistical Differences were
Legend: I = Imorovmg Trend; 0 = Degrading Trend; J> = Parameter concentrations
Observed.
are at high levels.
Station
- i 5 l o
o
"r.
¦c i "J
ARKANSAS RIVES BASIN (Cont'd)
Cucharas R blw Vfelsenburg
As=D
Apishape R nr Pquilar
Mn=l
Cd=D
Purgatoire R nr Segundo
Cd=D
Purgatoire R blw Trinidad
Purcatoire R nr Las Annras
OOLCRADO RIVER BASIN
Colorado R at Hot Sulphur Spgs.
Colorado R nr Hot Sulphur Spgs.
D*
Cd=D
B =D
Colorado R nr Dotsero
D*
Cd=D
Colorado R at Glenvood Spgs.
D	|
! Fe=D
Colorado R at New castle
D*
Blue R abv Dillon Res.
D*
Blue R blw Dillon Res.
Blue_R_ati43util_
Eagle R at Gypsum
J21
' D
i I
Cross Cr at Mouth
I D* |
Roaring Fork at.Glenwcod Spgs.
Parachute Cr nr Parachute
Gunnison 3 nr Grand Jet.
East River at Mouth
D*
! I
Tamcm Cr at Gunnison
I !
I D I
Cd=D
Cd=D
B =D
Cd=D
I
Cd=D
(ca=D
(B =0
' (Cu=I
Cd=D
Cd=I
D*
I I
; o==o
1 Cu=D
! As=o
53

-------
Table 3 (cont'd). Significant Water Quality Trends
Stations and Parameters where Significant Statistical Differences were Observed,
legend: I s Imoroving Trend; 0 = Oegradfng Trend; * = Parameter concentrations are at high levels.
Station
01 l
o I
o
£
a
iA	
- 1 ^
V
L. 1
c
O J
"3


JZ nj
TO
u , <->
X
COLORADO RIVER BASIN (Cont'd)
Surface Cr at Orchard City
W. Salt Cr nr Mack
Dolores R nr Bedrock
w. Vaturita Cr nr Nonfood
D*
D*
D*
1.
D*
I I
ca=o
Green R at CO-OT line
Yampa R acv Oak Cr
Yampa R nr Hayden
Ya-^pa R nr Mavte 11
Yairpa R blw Little Snake R
Williairs nr Havcen
Wilson Cr nr Axial
Little Sr.ake R nr Lily
v."hite 3 blw Ficearce Cr
Mute R acv Rangely
D*
_LL
Cd=D
Fe=I
As=D
pb=r
ca=r
Cd=D
1iS=D
(Zn=D
(Cu=D
(Kc=D
_LL
I	L
Sar Juan a afcv ^lavajo Res.
Navajo R nr Chxato
Piedra R nr arooles
Los Pinos R nr La Baca
Aniras R -r Silvertcn
-miras R acv Durango
La Plata 3 at rVv 160
! d :
D*
, Pfc*=I
, Cc=I
1 Zn=D
I Cd=D
I(Fe=I
! (Q3=I
I (Pb=l
(Nl=I
I I
M	_ D* .
D .
(B =D
(AS=D
JCd=D
Cd=D
_ -_S=0
Cc=D
ss=3
' 5k - -
A<3=D
Cd=D
Cc=D
l-S=D
CU=D
B =D

-------
Table 3 (cont'd). Significant Water Quality Trends
Stations and Parameters where Significant Statistical Differences were Observed,
legend: I = Improving Trend; 0 = Degrading Trend; * = Parameter concentrations are at nigh levels.
Station
"3
O
>
*0
c
o
a
o
£
•a t
J i
COLORADO RIVER BASIN (Cont'd)
Mc Elmo Cr nr CO-UT line
I I i i
NCRIH PLATTE RIVER BASIN
!
Grizzly Cr nr Spicer
Little Grizzly Cr nr Coalrront
Michigan R at Vfelden
Cd=D
As=D
Laramie R at CO-WY line
As=D
RIO GIANDE RIVER BASIN
Rio Grande R at Alamosa
Rio Grande R nr Lobatos
(Fe=T
(Cd=D
(Zn=I
Cu=I
S. Fork Rio Grande nr S. Fork
B =0
As=D
TC£5D
(B =D
(Zn=I
Conejos R nr Magote
sarrn piaite river basin
S. Platte R nr South Platte
S. Platte R abv Littleton
S. Platte R at 60th Ave, Denver
S. Platte R at 83th ^ve, Denver
S. Platte R at 124th Ave, Denver
S. Platte 3 at Henderson
S. Platte R at 160th Ave
D* ! I ! D
I V
D*
D* '
D+
D I
D*
Cd=D
2n=I
S. Platte R nr Kersey
D*
I* !
-5-5- ;-
i Ag=D
' I ! Cd=D
; I 3n=I
| I I Cd=D
L 1.5S=D

-------
TAHl.tr 4. SUMMAKY OF IMPAIRMENT VALUES RANKED ACCORDING 10 UliE.
STATION LUCMUlU
AOH/.TIC	A'HJAlIc	fl'IIMC.
I, IFF,	1,1 FF	kAlMi
rui.il hAIHJ VjAKM WATFk MUM'LIF!
I'Mi'AHY iHJiUpftuy
CIJI 1 ACT r il" 1 ALT
kj rM in 1h«	)-i rnv a i iihj 	ljli'J "'SI• 'ill
i" u r i n i n ( i y v
1. 112KR0	06054bUO
_Klssmif?L B_Tvfr _at_ tvjstoii,_I!I
2. 112WRI)	060beb02
_MISSOIIRI K PL CANYI1H FF HRY DAM W
Jl ,.3H
bO
0 ,1)
Jl
n.o
3.	J12WRD	06109500
_H I SSCItf H I RIVF.H	AT VI BGF-U.F:, . MT ,	
4.	1 12WklJ 06115200
.HISSOURl RIV fc. K	NEftH LANpNfrKY. "T.
59
	5, 50
12
. _5 . 4 2 .
11
5. 112WKD	Ohl J'2000
MISSOURI. H I y tR	£FXh_B_
6. 112WRO	06185500
jiissni"ei_etap cumenTstin.
0,7 3
i J
l n
1. 112URO	06018500
BEAVF.RJItAO HIVtH NEAR.TWIN BK1J>G
S. 112WKD 06089000
J> UM_. f? V F H _'±kA_"_ y ? IIGHW. HT.	
0,0
60
0.17
61
1.92
IH
	
1 )
.O.P	
b6
_0, »•.
2S
°,f> . _
52
0.0
_0 a f»o
54
J! .JL
hi
	0 . s 6_
bO
	?.?2.
?7
".¦li
b*>
0,66
' bl
_ J>.° _
6 3
».11 .
b9
'2.1	
b4
ft.lo
2)
1,12
IS
o. n
b5
0.71
/ 2
0.0
40
VJ1 9. 112WRD 0608H500
°>UODY CKFtK M' VAtJCiHW, KT.	
57
loo.oo
10. 112WRD	O6IOIS0O
HAH IAS RIVER NFAH CllkbTLH. WT .
1
0.0
b4
H4.20
i
0.0
0,1 A		
^•!!_
20
_ o, n_
iO
-.0 •'!_
lb
c. 0
16
n.o
41
0.0
•/ft
_n .0^
56*
0.0
b?
1.27
40
0.12
4 2
0.0
4 1
57
_n. n
~5H~
11. 112WK0	06U98I0U
BIRCH CREEK NEAR VAl.lKH M'f
62
0 . 0
bH
0.0
bH
0.0
0.0
~Q9~
12. 112WHD	0612b bOO
MUSSELSHELL ft!VKH UKAH U'HJNpUp,
63
17.74
62
62
6 . 0 J
13, 1I2WHD	06130S00
HUSSELSHEM. RIVfc-R AT MUbHY. HT.
14. 112UHD	06126470
HAL? PR CEP CRF.EK NEAR MU" HT
15. 112WR0	06127160
WEST PARROT CREEK NfcAR Rf)llHU
is
'(I
_lL.iL.
bb
40
3 6
nto
44
n.o
b'.
_o.il.
•>7
1 .
b6
1. "
hi
J';"
Ji_- D_
b"
4b
0.0
bf
o.O
b2
i9
D.O
0 . (>
62
"il'-
bb
0.77
33
_0.4J
30"
0.15
JB
J-il
7b
O.bs
0.0
s
0.(1
;
.0
H
0."
<5
" 1'"
<1.0
11
11. <1
" i'l
o. n ;¦
/ i
I h
<1 . I>H
I- I
4 , <1/
Ji-
ll. 0
" 1.1
<> .*
" ')
n.o
tiS
3f-_. 1 I
M
11.0
1 I
14"
0.0
ib
IS.Si
I }
1.44
4 1
7.11
17. 112WRD Ob 17 4 b UO
HILK RIVF.R AT HftSHUA, M l ,	
18, 112WKU	06156O00
WHITFwATFR LHEFK HEAR TulFHuftTlt)
bH
J
Jl
0.0
b/
0.76
4S
hi
61
16
2.Sh
" 7fi"
JL-1*
bS"~
'jO
_0 , » <
~i? "
0.0
6
-------
IrtHLE 4 (CONl'U). UllHMAfiY Or IMPAIRMENT VAl.UCS RANNECi ACCOIiLUNG TO USE.
STATION 1,11(7A 1 I O'l
ntju a r i r
I. r »¦ h
CUl U «A I H'
I 19. 1I2WRI)	Obl7/S<)0
R(¦ DKA1 I- R Rm H _AT _CJ KCI.f
20. U2WK0	06177*25
REDWAl^R H1VFR h I* A R VIDA. * T.
21.	112WRD	0617H00O
POPLAR H1VFR AT lHTtHN.AH 11N A1 j HO
22.	U2WRI>	0617 9 200
POPLAR RIVEN AHDVh hl-aT FORK titA
23.	112WH0 061B|000
POPLAR RIVfR NEaR POPUAR, Ml,	
24.	112WRI)	0617 90o0
EAST tflRK POPLAR RIV EH NEAR SC»H
I .<17
25
J}
4 i
n. ?h
52
J>_, 3J_
bl
0,69
40
J?t ^
4b
ADIIH'IC
1-1 hh
WARM .,ATFH
_f"r6S.
~ 17
0.24
46
	q.3?.....
41
1«_
4H
55
I 'It.I, ((.
• A'l >• K
Sllt'i i,(h
b,4b
1 I
_3.?*
20
1 ,0i
47
1_._44_
"~JS
0.9b
48	~
pn riu.i\
I ¦>" I AC'I
Kt-rHTAT Id.
;.h (_< *• < I • i» W y
nr i alt
p(- r III A'l 11in
1RRT (.A I I Ijf
1.1 v> i.i' >v
. MHi|"i.
0. ?H
J3
n. J u_
o. 3 7
Jl
n.n
n.n
1^
o.o
>(¦
_o.o
/1
J. 31.
~ 2
2.91.
	3~
0.95
~2 9
1.	)
	11 Li.
44	* 44
44
0.0
4 5
o.o
4ft
22
fl.O
21
25.	112WKI)	06180400
WERT tOHK POPLAR.R I V.tR.jNKAjJ*_Rt.U_
26.	112WR0	0blHJ4b0
H1G MUDDY CREEf NUB ANTEI.OpE MT
vn
27. 112WRI)	06192500
Yellowstone Rivr.R heap livinGston, MT.
	0,62
44
_ 1 ,S0
24
0.50
"47"
J?.7 J
47
1 . 9 b
20. 112WRI)	Q62)4bO0
YELLOWS 1*0 H F- HlVtR AT B I Ll< I BOSHT
29. 112NRI)	06217b00
YELLOWSTONE RIVER Af HUNTLEY, Mr
30, 112WR0	06295000
YELLOWSTONE HIVER AT tORSYTH. Ml
_1 • '-'JL
29
0.72
JH
2.24
17
_0,55
30"
1 . 05
0, 74
51
	
29
o,2y_
"59"
2.19
0.0
4H
_4 .Oil
»
0.0
50
0.61
24
n. o
2 5
H •0
2 6"
n.n
27
n.n
24
0.40
39
1.69
31. 112WR0	06296120
_YELk'_lWSTQHE JIJ VE.R. NEAR MILES CITY. MT.
32. 112VJRI)	0632bbJ0
YELLOWSTONE RIVER NEAR fERRY. HT
20
1,0/
32"
3 , 0"!
19
_0»jLL
43
2.02
JO
I). 2 5
" fcO
_L«.A2_
26
6.4 4
"" 4
2 8
2.72
(i.7 0
1
2.72
33. 112WRD	06329500
_YE-LilAJWS10Nl._my.tR HE AH.. bl[>Nt.Y. HT .
34. 112WR0	06207500
CLARKS FORK YELLOWSTONE R] Vh R HtAR HEI.FR
35. 112WR0	06207510
.BIQ_SAN|)..CL__AX. WY-M(JNt STATE 1JAE.
36. 112WR0	062177bO
FLY CHt-fcK A t PtmPy- IL> PILLAR. 'iT.
17
_ 5 , 34
1 4
0,4i)
49
1« . 52
5
n. n
16
37
8,47^
<>
41
_ 1 «2b
J 3 "" " 41 ~"
0. 40
JH
JLHL
0.0
_o.o
64
bb
i.2J
24
0.21
J 5
_L-i!L
1i
0.59
2 8
0.40
_o, n
-J?"
ft.O
J 7
n.o
"33
0.0
/'i
S . (1H
;
j 4
n.o
Jb
n.o
it
1 . h i
2'2
I .04
2*
2.7'j
h
2.4H
	§—
0.0
53"
0.0
"b*—
2.72
	p-
0.0
5b
57
0.0
~e_
u.O
59
0.0
t.r
1.	^7
h4
S 9
2S
J^
/>b
<•. i»
1	•'
2'1 *
n.n
/ \
(1.1.
'"a
o.'l
¦f <
_i' •n
— >"T"
o. n
/5
0.0
2	6
0.0
2 7
0.0
—n-
<>. o
«.o
jo'
0. n
j i
if
0 . o
n
0. o_
~ 3T"
i». (i
js
ji . .1
ji<
11.2;
I ^
'-1'
/'¦>
b?
.17
-I'J
_i • - 1
bl
4 . l.>
42
12.17
1 / "
1.31
57
<."1
~ Jl~
I 3 ¦ 2 ^
1	5~"
_b . / 1.1
"3 4"
I 0 . n I
i. 1
7.24
/<>
'I. Hi.
2	2
	1 .21_
b»
3 I . 1 H
/
_11 -Jl1
11
z
>

-------
TABLE A (CONT'D). SUMMARY OF IMPAIRMENT VALUES RANKED ACCORDING TO USE.
.STATION LOCATION
MjtlnllC	All!) A f 1C	POHL1C
1.11- b	l< J b b	nf rill
C'U.lJ »AIFH WARM 'O'lm blll'l'l, I b S
37. lWwhn	062H7000
. BIGHORN RIVER Ml- Ah b'l . XAVlb H . H
38. 112WRO	0629471)0
BIGHORN RIVER AJ HlC.HORN. HI.
_fiL» n-_
nb
_0,0_
6 0
0.41
	 !.!>.
43
	L.IL
39. 112WRI) 06294940
-SAHPI_CRFt K . _N_b_AH JlYSHAM., _Hl ,	
40, 112WHn	062949B0
FAST HJRK AKHhl.LS ChEb.K Mb'AH C^L
2 6
1 .61
23
0 .47
41. 112WKO	06294995
AKMLl.LS CREEK IJb.AK frOHSVfH. MT
42. 112W1.0	06295113
ROSEBUO C AT RF.SE.KVAT1QN BOUNDARY NEAR K
43. 112WHD	0629b250
ROSEBUD CKFbK Mb AH COLSlRIP. HT.
44. I12WRD	06296003
ROSEBUD CREEK AT HOUTH, NEAR RObbHIll). Ill
00 45. 112 W H D	06306300
TONGUE R1VFR AT STATE LlhE NR DECKER HON
46. 112WKU	06307500
TOf'GUE R1VEK AT 1 QNl.tlt H DAM, Nt
47. 112WKU	06307616
TONGUE R AT BIRI1FY OAY SCHOOL BR NR BIRN
48. 112WRD	06J07830
TONGUE K UL BKAiJDEWHEKG BKIDt.b ,
49.	112WRD	0630B500
JTONGOb RIVtH AT H 1 LES CITY, WT.
50.	112WRD	06306100
SQUIKRFL CRtFK Mi Uh.Cbbk, MT.
51. U2WRI)	06307570
HANGING WOMAN CHEEK BL h'JRbF CHEF K NR BI
52.	112WK0	063O7600
HAHCIMG WOMAN CRFbK NEAR BlHNEY. HT.	
53.	112WR0	0630 /7)7
OTTER CHEEK Bt-LOU b IFTFLIlMl Lf CRFEK_NK O
54.	112ViKD	06307740
OTTER CREb K A1 ASHI.ANI), MT.
IN
1.01
3d
37
_0 . 1 6
4 9
0.41
19
!• 'L.
2H
3. t 3
3t>
0, 3/
40
JLxUL.
20
0.R2
?6
7.10
39
4.15
11
J.94
21
5.9	5
~ 10
5.10
1 3
34
1 1. 39
16
0.77
" 34
0.14
56 "
0.59
45
I
"21
1 .69
n
0.74
~"3
0.62
4 3
ft. 76
?5
0.72
54
0. OH
i *
0.4 6
3 4 —
0.15
50
^.4 3
35 "
1 ,0t>
23
1 .06
22
0,59
75
0.35
~ 42
0. 1 2
51
I). 0
5 3
<>. 50
3 i"
0	. 40
57"
1 3 . 0 H
"3
1	.05
46
1.2J
4?
1 .'>9
45
1 ,fi4
3 T
4.04
1~H
3.37
24
5.1 1
1 I
} •s L
2.'
I'H iM'V	,KnniAH|
( in' 1 Alt	( ii''' l A( T
Pf-l'b an '111 l!HI b » r I II,J
I. I V I- .'I I if I
I UH I (.A I 11 I.I I / rp |J I I., M V
L' .
67
0.0
37
0."
hi
.n,n.
6 4
r.. 1 3
3«
_n. q
39
0.0
37
n. o_
•Jl
40
41
h I
0.0
64
1 .HO
19
2.24
12
3.50
~1 "
".11
\ I
t H
(I , n
j 9~
0.
4 0
O. 0
-I i
1.19
i'l
1. w
50
2:V
2 0
. 7o
u
10. >17
1 '
J>. 74_
2 3
1. oy
i7
i ,p ;
0.0
0,1.
42
o.o
43
o. n
17
1.12
14
44
0.7 7
i r
4 7
0.0
43
0.37
3b
0.27
_7
_o: o
"i /
i). ii
i i
"
0.0
is
<1. » <
2 1
I.K'I
.1,1
1 9. /li^
~"l'i
3. 3.1
'"|R
'..13
JM
0.77
1 7
_0.0
46"
ii.o
46
1 3. '-.li
I 1
O.O
47
0.97
9
0.0
47
11.0
4 1
P. i I
S I
H.M
27
0.16
36
0.7 >
"in"
O. fl
40
0.0
4H
_ti.O
49
l..11
4 H
o.o
4«
1. »'.
39
4 . 01 >
4 S
J
19
0 . 0
o.o
"5""
ii.n
"" bf>'
*.7 2
0.74
34
0.0
" 5 7
o. n_
51
o.n
57"
2.4 J
"10""
1.6^
~2l~
0.0
'J I
_0.,i
57
7.7/
~ 7
_S.H 1
JS
0.0
53
O . \ /_
in
n.o
5 3
o..i
5 4_
1 ,H5
io
1
0.(1
b 1
,i.ii
54
7. I d
J f
7.;<
3 0

-------
TABLE 4 (CONl'fl). SUMMARY OF IMPAIRMENT VALUES RANKED ACCURIUNG TO USE.
fii)IU1l<	AOUAlIC	I'llhl.ic	fM-!iiAI"lACT	I. U »¦ M I ( >
Clll.h «AIIR WARM WA'll'rt surci. (L5 PFf RCA rirj.l C f CRFA r I MM IK |(,A I I III [HfHlil, *»!• >1
I b5. 112Wlm	06)08400
PUMPKIN CHfKK_NH_AH	CllYJjf	 7.9ri _ _ ?.44	7.R3 _	u.66		 n. r>	l.t.s _ _ <>.o 16.7..
10 ~ " " "\7"	" " 26 " SS	 is"	il
56.	ii2Wkn	o>>aoyo79
MUSI I- R LRtFK TJ b A R KH.SH f- T 21 .4 i	J'l.n'. / 3 . 1 1 l.flb	l.'J'i	0.9', nil. If
~ 4 3	~ / ) 1 lT	"" 5	»
57.	112WUI)	06309145
CUfrfbR CRfcFK UK AH Klt.'kt-Y HT	If,?!_	1 •», 4 J	11,04 	P.64	0. <<()	l^b3	1.35 5 I . Ho
' " b	5	" " 4	7	" "	23 ~	' >	5
5fi. 112HI/	1_. I h	
7 7	1 3 s 4	" I	~ 7
59.	112WHD	Oft J76b00
POWDFR R1VFR HEAR LUCAT h . "f.			''•_?!		 S. B 4	_ n	1 . B h	 '>.«> M. in
i	4	H	6 ~	-iQ	14"	4	4 "
60.	117HRD	Of. 326300
HIZPAII CRtEtv HEAR H17PAH. "1 .	4.J1	7.4^	3^4 5	1-LL	QjJ]	ZjlIA	" • '1	1 s-?'i
ib 14	7 3 l(i 60 5	".T.i"
61.	112NRU	06326555
CHERRY CRt-l-K NFAR TERRY HT	'1.35		4 , 7 1	0 • ^ '-Hi>	0 • " ^".4/
V ' 6	14 " " ' " "ifl "" M "l?	"6"\
67. 112HHD	06326*00
O'FAI.Lnil CHLtK NEAR 1.MIAY. hi.	K72	0,47	4. S i	to	0_._7J	7^7 j	 _ _ n . o	
2 7 U	15 16" 13 7	""•''.n	7.6-,
	bS " 6 3	3 7 ~V "b '	3?	(. (	> H
64.	112WHH	06j?7»50
GLtNDXVt CRttK NEAR (.bfcnOl "F HT 15.32 f. 21	H.H7 b. 7b O.PO	2.3b	'•. n 41. 1h
"7 8	) 5 1 ll	"6 4" " b
65.	112WKD	0633654b
LITTI.E BEAVtR CRFI- K NtAH WlbAUX 0.74 0.0	4.0J o.n n.RO	1.62	b.\l
3b 65	" " "" i«l o5 «"	2l ,	65	ji

-------
Table 5. Significant Water duality Trends
Stations and Parameters where Significant Statistical Differences were Observed.
Legend: I = Improving Trend; 0 = Oegrading Trend; ^ = Parameter concentrations are at high levels.
Station
Bacteria
c
4)
»
o
u
w
z
Phosphorus
Dissolved Sol ids
Suspended Solids
1
1
|

-------
Table 5 (cont'd). Significant Water Quality Trends
MONTANA
Stations and Parameters where Significant Statistical Olfferences were Observed.
Legend: I = Improving Trend; 0 = Oegradlng Trend; = Parameter concentrations are at high levels.
Station
I
to j c
c
8
s
3
o
"E.
= *
MISSOURI RIVER BASIN (Cont'd)
Rosebud Cr nr Rosebud
Ttangue R nr Decker
Ttongue R at Tongue R Dam
! D
Mn=D*
Fe=I
Fe=I
As=D
Tongue R at Brandenberg Br
D*
D
D ! !
Fe=I
Tongue R at Miles City
Squirrel Cr nr Decker
Cd=I
Fe=I
Hanging w&rran Cr nr Birney
D*
D*
Otter Cr nr Ashland
Punpkin Cr nr Miles City
D*
7n=D
Pawder R at Moorhead
Powder R nr Locate
D i
] Pb=I*
Cd=I
Mizpah Cr nr Mizpah
i(Fe=i
|(Cd=I
;(pb=i
KOOTENAI RIVER BASIN
Lake Koocanusa at Int'l Bdry
i I
r
61

-------
TAbLE 6. SUMMARY OF IMPAIRMENT VALUES RANKED ACCORDING TO USf..
1
AUUA riC
AOllATIL
I'uhli 1 C
l'l< I ».AI(Y
t>h i.fii nAR ,•
"


STATION LOCATION
LlhE
LUF
A 1 f H
CHI> 1 AlT
C<>• • i ac r

1, t VI- .. 1 (iri


rui.l) iA1h'«
WAW.1 UAri-K
:>iii>PLfi-.s
I'M AT1IM
rM'kFArinii
Jl'fi U,A 1' lull
l. A 1 h P 1 "
M V
I 1. 2|N|)HDU0 38u00l








BOIS DE SIOUX P - WAHJ>tTH|J, U|)
1 .26
I .55
0.65
¦2.7 1
ll . 0
0."
0.0


29
21
97
0
4 1
_ i j 3-
' is -

2. V 1211H11 osnsisoo








BED RIVER Oh 1HK NI1KTH AT WAHVETflN. NL
o.so
o.o
0.0
0.0
0 . 0
0.0
O.O
0 . S(l

if,
toe
1 '2 2

4 ¦)
114


4. 1 1 2WIID 05051522








RED Riven Oh THE NORTH «r hickson, nd
1 . 14
0.h9
0.20
1 .46
O.o
u.O
o.o
l.*9

26
b?
116
3H
31
1 U2
4
c 1
5. 112WRD 05054 (>00








RED R1VhH Of THt MUHlH AT tAH<;tl. NO
0.32
0.0
0.0
0.0
0 . 0
o.o
0 . 0
0. 17

9 7
97

UO
3?
112
S

6. 21M1MN RRKK452---10E71








RED RIVER HAIN t. FIRST AT FART.O
0.67
1.0J
0,0
1.45
0. 10
0.30
0.0
1.7 «

b6
4?
121
39
fl
64
6

7. 2INDH OWO JH0002








RED R - FAKUO. UU
1.09
1.34
1,39
'2.14
0.10
0.111
O.O
•-.15

36
25
61
1 1
14
71
7
45 ' "
8. 112WRD 05054020








RED RIVER OF THE NORTH HELUW FARCO. ND
o.7H
O.O
O.O
0.11
0.10
0.0
0.0
0.7rt
O
103
9b

11?
15
1 18


NJ 9. 21MIHN RRRR403	10f67








RED RlVtR CSAH-39 W. OF PEHLEY
1, 19
1.32
0,24
?. 1 li
0.0
O.O
o.o
*.05

25
26
115
in
66
7 R
0 ...
56
10. 112WKD 05064500








RED RIVER OF THE rfORTH AT HALSTAD. UN
1.6
16. 112WRD 05102500








RED RIVER AT FMEHSCIN. MNITOhA
2.73
1.42
1.13
o.n
o.n
0.0«
0.0
S.7H

6
2"
6fl
54
lt'l
7?
O)
47
17. 112WHP 05051600








WILD RICE RIVhR NR RUTLAND, Np
0 . 0
0.0
0.78
0.0
0.0
0.0
o.o
0 . 7 H


IC1
R 9
1 1 1
1 1 4
lbn -
17
1 >•>
18. 112WR0 05053000








WILD RICE RIVER Nk AI*h.RC»J0''H 11- ,
0 . 9H
<>.3 2
1.47
0 . 0
0.0
o. a'»
O.o
1.71
I
4 2
11
57
tlh
IP
"n7
IS
..a

-------
fABLE 6 trONT'D). SUMMARY OF IMF AIRMEN I VALUES RANKED ACCORDING TO USE.


a wi' a r i (
AUHA'l IC
huji.jc
t'KII'MIV
!,h ( (|,.I1ARV




!>1A1'1UN t.UCAl JliN
I.TF F
1,1 F I
A atf r
CUM ACT
Clio I ACT

Mvi .s iL'f>


.

rm.ii >.ajh'
J' ARM WA'l FH _
mi I'PL ifa	
l't CRI A'l I(Hi
PFTl.Th rj p-»
1 K|i 1 f.AI 11
-All H J l>i.
V
	
19. 2iNniint.'0
300031









WILD RICF H N-Wtsr - At*t HCRIJ'IH IF.
?.<:3

0.". _
1 . «4
n.O
(i.d
".0
(-. n



9
1 7
91
«' 1
1 0
11/4
19


20. 21fJDHI)WO
3 8 0 0 3 0









ATFI.HPF CR idUTH
OF AUFhCROMHIE
). R 2
4.?<|
1 . ("1
4.24
o. n
o.o
n.n
1 > . 1 1



4
5
M
4

1 il9
2'>
•1

21. 1I2WHD
050 54 500









SHLYENML HIVtR AHUVF HAHVF.Y. Nl>
0.16
li.O
1.4/
o.n
o. o
1.1/
n.o
7.1)



1 16
MR
59
iu;
i l
32
2 1
*7 -

22. 112WHO
05056000









SHtYFNNE HIVF.H NH
WARWICK. ND
0. 30
0.0
0.60
0.0
n. n
0.5b
n.o
) ,4s



1 00
96
100
103
I?
56
22
lo9

23. U2WHP
05057000









SHFYtNNt HIVEK NR
CUOl'FR.STCIMl, on
0.4b
n.60
3.90
1 ,R7
0, o
0.03
<>.,)
S.O'I



7R
55
1?
i 1
/1
74
21 -
j')

24. 112WRO
(jbosaooo









SHF.YFNNE HIVFK lit-l.nv, hAUMIILL DAM, NO
O.SH
0.9'j
1.09
| .HO
n. n
ii. ii
0.0
1 .U



69
45
Id
25
24
I lR
i 4


25. 21MDHDWO
3HOO0&









5HEYKNNE H - VALLEY CITY, N|)
0.R2
1
j
"•V
a-
c |
u . 3t>
1.2 1
0 . 0
u.u
0.0




52
46
1 1 1
46
2 5
1 lfi	
2 5
bS

26. 112WHO
0505B700









SHEYENNF. RIVEF; AT
LI&BHN, NU
0.2H
0.0
0.75
o.n
n.O
0.0
n.o
1.0 1



102
lu4
90
113

1 17

1 16

27. 112WKD
05059000









SHLYFNNt H1VEH Uh
K1N0HF.D, ND
O.RH
0.57
3.23
1.01
o.n
1.2 1
0.0
S.'Jl



47
5 H
20
Si
2 7
30
. . /7 .
2«

28. 112WKI)
05059400









S H E Y F N Fi E HIV EX MK
HURACF, UD
0.0
0.0
0.0
o.n
0.0
0.0
0.0
n.n




1 10




34. 112WHfi
05059600









MAPLE H1VEH IIH HOPE, UD
'1.0
0.0
0.0
o.n
0.0
0.0
0.0
n.o




9?
1 ?<>
•if
34
«2
- _t< -


35. 1IJWHD
05U597OU









MAPLE RIVER NH FNOF.HLIM, III)
0 . (t
0.0
1.55
n.n
0 .0
o.c
0.0
i .5^




9 4
53
vfl
JS
.. ^ . . ..
JS
i

36. 21NDIIDWO
1R0034









M/iPLE RIVER WEST
OF" FAH(jD m. L».
1 . 2H
l."»>
0 . 50
1 . <<<>
n.n
O.o
o.o
s. /><



27
1 3
10?
1 ¦»
36
H'l
3r>
4«

%

-------
TABLE 6 (CONT'D). SUMMARY OF IMPAIRMENT VALUES RANKED ACCORDING 10 UUE.
STATION LOCAllON
ftUHAlJ I
Llff
cni.i,. i m i
flOUAlJC
LIKE
w»VI hMfll
I'.II-LIC
A I K H
t.nt'l-1.1 ^ •*
I'l* I liAKV
run i ac T
1'h.rnKAi im
.,1 l H
r i ¦ » act
MKCUFAI III',
I Wt- 1 I,A I I III-
I. I V> I I'CK
' I r I' I ''I. ShV
37,	21NHIIDW0	JfltiOJb
RUSH RIVFR laiKTHWfcS'f UF HARViUOn
38.	21 NDIIDWO	3H UO ih
ELM RIVER IJOU 1 HI.AJ-f HI (jHA'U.lr
39.	1 12wM>	ubOhbbOO
_GOOSE_ R_1 Vtk_ AT Jt I Ll.MHIHO, JjO „
40.	2 1 NDIIDWO	3 H 0 0 2 7
r.unsE river nfar uli.Lsi'uuri
41. 112WR0 0b064900
_B E A VtR tHEE K HH t 1_NLM , JIU	
42. I12WRD	05uH30(>0
TURTLE RIVER AT HAnVEL. ". DAK.
1.0 7
2
0	. '.2
M
0. <0
99 "
• 7iL
"sh
1	.SH
1 7
0.41
9.0/
7
-•hJL
bl
0.0
1 no
J .02_
39"
1 .90
IS
0.14
o.bb
9 5
O.bl
' gH ""
0.«5
US
1.02
"72
2.74^
3)
3.SI
I
j I
(I . b /
~b3
0.0
1 OH
_| .H 7
2? "
1.	3»>
3
1 ,2b
0.0
37
n.n
3S
0.0
30
O.ll
43. 21HDMDV. Q	380037
TURTLE HTVER	Ot MAUVfcL
4b
0.0
H3
0.0
44. 2 INDHDkQ	380030
FOREST RIVER HI-AR FURQVII.LE H. D
O.bV
1 09
1 .04
17
0.9b
7 tt
0. 17
o. o
"ITS""
« . 04
4 0
1 .00
....
".13
tr
O.O
3T"
0.0
O.O
<> . '• i
5H "
o.o
" & 7 "
0.4	1
""SI"
1 .(M)
"""45 "
1.M
0 . 0
J 7
I,. It
" in
o. ¦>
31
O P
" i .1'
". 0
3 1
"rr
i.?b
"27—
0.0
/1'.) i
i
i. o i
1,4 '
1 . 1 s
1J1
^,lll
" "54
17.03
1
7 , S 7
7r~
0 . I)
" 3 v
o.o
	W
0.0
137
0.0
~~ST
o.o
—3S"
o.o
97"
o.o
93"
o.o
1 07 "
3.14
"97"
^ 4b. 1 12 WRO	050B4000
FORE ST RIVtH NH t-UHI>V ILLI- . MO
4b. 112WRI)	ObOfl 5000
FOREST R1VFR AT M|Wfn, HP
bb
0.20
1 14
0.21
47. 21NOIinwO	380039
FOREST RIVER NEAR NINTH H. 0.
48. 21NOHOUQ	380040
FORKS! H 8 MILFS EAST OF MlN'IO
11?
O.MI
S3
0.H4
38
113
0.0
TTo
o.o
Ti1'
0. fi«
O.r
- i «r
11 R
1 .Ob
3ft
1 ,0b
49. 112WRD	050H9130
HIDDI.E URANLH PARK RIVFH MR EU1HHIJRG. NU
50. 21NUIIOWO	380043
PARK RIVtK 3 HILE.S SOUIH HOUPl.E
51. 112WRD	05090000
PARK RIVER ftT CR^Ah TON L Ml)
52.	21 NUIIOWO	380 01b
PARK RIVER UN 1-29 MI1RIH DAKOTA
53.	21NDHOdO	3HO047
J'ARK __RIVER_ Mi>I_.'J.F HOUH.I- N. I>.
bO
0 . 7H
bb
1.47
i)
0.11
1/0
0.52
/b
TT
0.0
1.47
--j—
—9^
0.4 0
loft-
0.34
TT2"
T2r-
I .62
" 2 ft—
1.71
"27"
"47T
0.0
~~\~r
o.o
~P"
u.o
"95
o.o
o.o
0.52
54. 112WR0	0 b 0 B 9 9 bO
WORTH HRAHLII PARK R1VEU NR WASH, ill)
0.7 2
b 1
7.17
......
61
0.91
47"
o.0__
rt 9
0.0
"l t ?
0.92
~"7 T~
0.9d
74
0. R 1
O.ftO
ioi
_0 .
0	. 0
~HS
7.4 0
"1T~
o.o
aP "
O.flU
1	.4H
11
0.0
S>) "
TiT
4» , 0
4qT
o.n
"Sir
o.o
-5 r
0.0
55"
0.0
Si"
o.o
~5T"
5TT
(..0
~ ^7
0.0
5F~
o. bb
"53"
0.4b
~0~
0.0
1 01
o. so
4 n
.1.11
"•17
O.o
0.0
40
it n
50"
0.0
f> 1
0.0
57"
0.2"
".HI
n«—
,i. 11
5 3"
n.o
" r- j
J.n-J
- 7S -
3.^4
~ 1'1
1). 7ri
1 10
*.?b
—3"
1 .74
10 1 "
3.02
—g-,—
1.71
PO
l.s^
" S 7 ""

-------
TrtPLE 6 (CONT'D). SUMMARY OF IMPAIRMENT VALUES RANKED ACCORDING TO USE.
^TATIHW l.dcA'l'Joi.
A'Jl IA I I C	AOIIMJC	t-> «¦ til. I C	t>|. II.AI'V	I>;ir>
l.ttf	IjlhK	uAI't-H	Cllil I ACT	fl'I'lAlT
<111.1' I.AIM' WAKI1 v'A|t-K .'jl'I'Hl. 11	HI cia A I 1(11. I'H rIf(¦ Al in.j
1.1 III r.
ll'R 11. A 1 111 I 'i ft I t 'M ii.
I 55. lli>WKri	()S(idvOOlinhO	3 fi (JO-1 n
ARK_ K_ 6 H I LK.b tA;,T OJ; PARK	R f	
57.	1UKKI) 05099600
.PEMBINA RIVm	AJ wAJ.HAl.liA, MU		
58.	112WKD	(15J0000"
Pe Mill HA RIVER	AT lltCHI- , li|)	
59. 112WKI)	u510100*'
TUNGUE HI VI" H AT AKHA.Nii
60. 2 1IJ DllOh 0	3 H 0«> -»7
TONGUE RIVER MIU1 ([WEST PENHlNA
61. 112WKIJ	05114000
JSOIIHJS K I Vbl< NP SHtHWCJUL) , MJ
62. 112WRD	05116000
SOllRIh R1VKR KiR mXHOLM. HI)
CT>
vn 63. 112WHD	05117500
SUUKIS RIVEK ABL1VK H1NOT, NU
64. 112WkU	05120000
SUURIS RIVER NP VtRlNliRVK, ND
65. 21NDMDW0	380018
SUUHIbR- 10WNLR, Ml
66. 112WH1)	05122000
SUURIS RIVH< NR HANTPY, "D
67. 21NOHDWO	38007H
SOUR IS R KRAMER Ml'HfH DAKOTA
6B. 112WRU	05124000
S01IKIS K I W t H NR WfSTHOPt. »D
69.	21M0HDW0 3«0021
Dy. ACi> R - h 0XHUI.M, Hp	
70.	112VIRn	051 1 b500
PES L.AC6 RIVER AT fUXH'JMl, N<»
71. 21NDIIDV.0	3 B0051
vaLLOW_CRtEK_V,f.SjLOF	rtlLl.UW CITY
73. 112WRD	05123510
deep rivf.r ur iu'hah,	»n	
1). 1 1
121
0.73
60
9.61
5
_n.7?_
1	i 1
0.40
b;
2	.00
lo
0.73
b<)
0. 3tf
~-
1.53
_if"
1.45
n.o
V4
1 .48
3 S
S-u
01
0.0
97
o.mt
55~
1 00
O. H5_
" 57 '
0.H2
" S3~
o.n
55
n. 0
•>6 "
o.n
57
11. 0
5fl
n. n
5»i
0.0
i> r
0.0
n.o
"104~
7.5 /
oft
0.95
i 7~
1.4H
n2
0.0
r. *"
0 . 0
1 0 7
. °H
1 1
7.16
1 0
_2_. 5 7
20 ~
n.o
1 .62
i M
0.0
~1 i 4"
56
0.9b_
76
1 .6B
~4fl~
0.91
bl "
1.71
~4T~
0.6W
9*
r?
1 .55
_31	_
(..0
"T03
1.30
"43
3.OB
fir
0.72
—T5
0.72
To"
0.72
I 1
0.0
1 .*7
" U '
n.o
	114"'"
1.^2
2')
30 -
6 H
0.0
" 69
0 . 0
~ljr
0.0
"" 11
n . o
~~l7~
0.0
luJ
0.v»h
0.0
"1.|5
I 1.6
0.0
ir.7
0.0
ion—
0.44
—"61"
o. o
-11 n—
1 .07
—40—
0.5;
54
0. M>
~57
1.03
0.0
0 . 0
.1.0
;>7
O . I'
-GP"
11. 0
" si
0.0
~o'T"
0.0
O 1
O.o
- S7'
0.0
O.O
0.0
~SS"
0.0
4 2
0.70
bB
0.2H
o.ll
*.7.J
"" ..0 "
7.7 3
l(V
0.7 J
¦ 12 r"
/t . 31
7
- - fa—
4.1 o
13
J. ? I
11 ii
/ .fs
m
6.°1
"7E"
^."l
45"
7
--JZ —
TT
0.7)
"52 "
".75
51
0 . 55
55
O.o
"121"
0.0
O.o
~(T"
O.O
O.O
—7^_
0.11
"71
n.o
"17
h . I 1
~ 4^~
-j,-
r> . 1 J
J 5 "
7.5 J
1 Ofi-
f>. o
¦n "
o
JO
o
o
t

-------
TABLE 6 (CONT'D). SUMMARY OF IMPAIkMENI VALUES RANGED ACCfJKUINCi TO USE.
Atm A r IC
AlUJAi K '
PUhl.lC
Pi-1 it am V
M LM «l>All V
'"I .SIATlihi LUC AT 1 UN
Lie h
i,n f
* A 1 I- H
run I'ACT
nii. i alt

1. 1 VI- .S 1 ll< f>

		
CUI.D >.A n H
Ir'ARK UMl-K
•SUKl'Ll t S
RtCKFM inn
pi-.CKF A r irtN
iRKli.A 1 lli'J
f'ATH) 1 (.»,
.St V
1 73. 112WRD Obl23/60








DEEP RIVER lltLDW CUT HANK CkEk.K H R UPHAM
0.0
0.0
1.21
0 . 0
0 . 0
.1.0
0 . 0
1.71


Ub
hh
1 20
73
17 3
n
110
74. 112WRO 0512J700








CUT hank chifk at n i.akh outlet nr granv
0.0
0.0
1 .50
0.0
o.O
0.0
O.o
1 .bil


1 1 7
55
121
74

~ " 14
1 ;.p - 	
7b. 112WRU 06330000








MISSOURI RIVER N H X 1 L. |, I STOU , flD
2.11
1 . 5H
0.51
0. S2
o. n
0.0
0.3/
5.OH

H
1<»
106
t> 1
lb
75


76. 112WRD 06338490








MISSOURI R1VFR AT CAHKTSON DAM, NU
0.17
0.17
5. 7b
0.17
0.0
O.o
0.0
S.7L,

IIS
79
h

if,
7fi
'/ r»
lO - —
77. 112 rfRD 06342500








MISSOURI R1VK.R AT B1SNARCK, NO
1 ,9h
1 .30
b. '»9
O.O
0.0
0.0
o.o
w.2 4

1 1
27
b

17
- n
- n '
"13
70. 1 1 2UKI) 06379597








CMAHBUNNKAII CRFEK NH CHARBONNtAU, ND
0.9 4
0.0
3.31
0.0
0.0
2.62
').0
*. 1 /

107
122
1H

f H
h
1 a
4 1
79. 1I2WRD 06331000








LITTLE MUUDY H1VER Bl. COW CREEK NR WILLI
o.o
0.0
2.4(1
0.0
0 . 0
1.43
o.o
3.Hi

1 24
123
30

79
52
7"
'If. ' ¦
60. 112WKD 06331850








BEAVER CRtFK NR RAY, NO
0.30
0.0
2.4 4
0.42
O.O
1.63
0.0
4.74
O
97

7H
	76
HO
16

t*o
On 81. 112WRD 06332000








WHITE If A R T H RIVER AT UHlTF EARTH, NU
0.0
0.0
2.43
0.0
o.n
7.11
0.(1
4 ,S.»



29
«1
B1
If
... f)1 . .
oi
82. 112WRD 0633251b








BEAR PEN CREEK I
1 .HV
1 .OH
7.10
1 .70
0. 32
1 .bs
O.o
».I3

12
35
jy
- -4r
1
19
on
I t>

-------
TABLE <5 (LONT'ID. SUMMARY OF' IMPAIRMENT UALUES RANKED ACCORDING TO USE
STA1 1 fllJ LOCATlU"
AOUATIC.	AdllAllC	t'UHl.l*.
I, J Ft-	L.HF	n A JFK
CIJI.U ViA-I h t-« PARll wAVfH SUP 1*1,1 t S
91,	112WKI1	06 3 3 9 500
Kill FF. li J VEH _NH (.OLDEN VAI.b^Y . D
92.	112wkn 06J40S00
KNIf.E RIVtH AT HAZENjNJ)	
93.	112WHO	06J39490
FLU CHFEK Nl< GOLOFNVAI.l>Y, HI)
94.	112WRD 06339bb0
COYOTE CRKFK MH ZAI'. IIP	
9b. lUURn 06339560
J1RUSH CRFFK_NH_ bflll.AH, (10			
96. 112WRU	06 33 yR00
SPRING CREH K l>Ft,U»i LAhF J 1.11 kRDUt'N Ctrl!
97,	1I2WRI1	06339900
SPRING	CRfc Efl MR HAI.LIDAY ( "0 __
98.	112WHO 06340000
SPRING	CREEK AT ZAP, HP	
Os
99.
112 w H n
06341HOO
NO
100. 112MRI1	06342200
SQUARE BlITTE CRLEK AB Ntl.sriN I.AKE. MR CEN
o, 4 I
"el
J •! L.
3 )
_
0.77
" b 1 "
n. 35
b 9
0.44
7 9
0 . 5H
/1
O.S)
"73
0.22
"110 '
0.H4
"bt
91
0.S4
60
_o.n__
9 3
0,50
63
0.3 4
69
".34
70	"
0.33
71
0.41
"fc3
J>.0
99
0.62
101. 112 WHO	06342260
.SQUARE BUTTE CRtFK uEl.Ow CHiTtR, NO
102, 21NOIIOHO	J fl 0 0 2 6
SQUARE BUTTE CR - CENTFk, ND
103.
HEART
104.
HEART
112WKD	06 34 3000
RIVtR UK SOUTH HEAKf, ND
21MDHDWO	3R0062
RIVER SOUTH OI.AUSTUNE
O. J 2
"93
0.3b
~~57~
i ,;i
jr
0.70
_b*~
0.0
ol
o. 3 y
06
1 .Oil
"45 _
1.10
105.
HEART
106.
HEART
112WRD	06345b00
RIVER NR HICIIAKDTOh, ND
1I2WRD 06348000
RIVER MR I.AhK, ND	
b 'i
o.?b
"loS
0,24
"jr
o.n
1 u5
(1.0
J
b?
4 , 46
H
J .66
14
2. lb
31
2.11
36
J.2R
19
l.b7
"bl
2.1b
1 . 1 4
67
1 . li
"h-T"
2.11
" "10
2. 12
J^O.72
>
1 .')¦)
107.
HEART
10B.
HEART
112URD	06349O00
-El		
21NIIHDW0
< - H A M LI A N , N V
3HQ024
1 l>6
J). i 3
91
_0._2u_
1 1 1
"TTT?"—
0.14
" "82
0.10
h 4
"IV
2.S3
T~~
1.T5
4 ^
1 . *b
49
I .94
PHI hM< Y	,sf t nrM>AB ¦,
rf)*i TACT	rci'U'ACT	I.1V1 *>Ti*(>
M-ri.FATIfln Mri.tATiriil 1 K l< 1 (./. I 11'11 h/l'limi I Si-«
_0.il _ 	n.^2	i-'l" 		
91	(,	~ 4f>"~	yl	9S "
0.79	0.0		1.16	H
b9	9; 34	4J	17
II. O	o.rt	2.7 li	r>.(i	6. In
93 " '93 ~5	91	li "
• i.Sl	O.n	l.Sn	0.0	*i. b ,>
~6H	94 l"0	9*"	b2
o.ft 6	_o,n	i.2o	o.o	4.9j
" b6 " "	ys 28 ~"	9S	b">
O.S')	0.0	1, b 3	'1.7b	6.HJ
b«	96 20 	I	" 1 1
0.54	0.0	1.3o	0.n	4.3[
" 66 " " 97 2fi	"97	67
0.77	O.O	1,10	o.o	4.1/
- so" ~	ge in	•-(&	5R"
o.o	o.o	1,ov	n.o	;.
99"" "	"99 4"3 " 5 o	lot
0.6b	0.0	1 . 10	O.n	4. S I,
_fi5	r(J„	J7	1 ,-|(T	- 7 -
O.O	0.0	t.31	0.0	3.74
101"	1 Of 24	101 " 7R
0,	3w	0.0	1 ,0i	o.,l	4.2b
72	TiT? 3"3	11?"	Si"
1.R3	0.24	2.2 7	0.i>	17.2/
" 24	9 7	103	" 4 ~
1.10	n,0	1.Ob	O.o	S.^o
^"*V	1 04 31	1Ti4
0.0	0.0	0, °t>	O.n	1.74
"lO^	iu«; «7	—1115	77
o , O	0.0	1.2(1	O.O	l.ly
"TOR	1 u6 3"l	ir.fi"" ""
<>.19	0.0	ll.HJ	0.0	3.1b
>7	107"	I (77	"""90"
<>. 1 (I	0.0	1.1b	0.0	1. >mi
jo	fuS 35	lnil 1 cT~

-------
1 ABLE 6 (CONl'U). SUMMARY OF IMPAIRMENT VALUES RANKED ACCOKHING TO USE
STATION I.TiCATKHI
AillJATir	AOUAlle	I'llitl, 1C
LIU"	U1KF	nftlKK
CHI.I' HAI1-H I'AR 1 V.ATER .SIIIM'l.TES
109.	11?WHD	06J44MI0
GkKfi^	B1VLR ]ll( HEW .|1_R AIH_C, NO
110.	21NDHDwQ	3Bu0bi
GREEH	N1VKR WtST l)F GLAUSIMr.E
0, 3u
0. 1J
0.3«
"h 7
0.3b
111. 21NI)tlDril>	38 0'*f> 4
ANTELJJPE _CREFt< >EfiT lit- CARSuH
112, 21 DDhpWQ	3B0Ob">
BIG WUDKY CHt^K SUll'lHtftbT ftLHQNT
94
o._o
1 .00
bW
0.0
111
1.?H
113. 112WRD 06349500
APPLE CHFtK NR MF.NOKKn, NO	
41
1 .4 3
24
114. 112WRD	06349900
CANNONBAI/L RIVFR AT Nfc.W t N(>LAnD NO
115.	112WRD	06 3 SOO 00
C ANNDNB AI.L RIVER AT. REGENT . _ ND	
116.	112WR0	Ob 351000
_CAN_NnriR ALli^RI VFH MhbfiW BEllTI,Elf , HP
g)l7. 112WRI)	06354000
CANNONR Alib HIVKI(__A_T
118. 112WRD	06349930
£9.hk_?ANK CREElK__«R HAVELOCK. HO
119.
1 12HHD
06353000
CEDAR CHEEK NR RALFlGH. ND
120. 2 1 tJUHDWG	3 H 0 0 7 7
CEDAR CRFE K_g_R AI • FJ OH N-» AKfjTft
0.60
68 "
0.93
43
_0.?7
104"'
1.10
34
0.6 J
67
0. 3b
b«
1 .56
2H
_S.92_
" 3
0.14
d 1
0.33
17
o.
lih
O.Sb
stf-
0.2B
if.
0,0
T19
2.52
121. 112WRD 06352400
TIMBER _CREER_HH_"*Nll.ifc!r.I_Np 	
122. 21NDHUW0	3H005H
HEAVER CREEK SOUTH (IF MNKIN
123. 112HRD	06 J 55 310
BUffALU CKFEK TRlnUlAHYNR GAS
2«'U
40
1.57
bO
J ¦C>1
4 1
1.3/
"63"
3. HI
"M
2.16
35
?.?3
i/~
1 .S6
45
1.	74
y_.
2.H9
22
1 ,35
~~h\r
125. 112WRI)	O646H170
jJAHES RIVER NR 1.1'ACE _C11 *#. fjD
126. 112WRD	06466500
JAHFS R1VFR NEAR I't N'.kFK, h . |)AK.
0 . If.
b
_o_. ?w_
101
12^r
_o.n
0.11
4.02
11
0.A5
-94-
7.12
3
0.53
1 i) 5
0.55
J u4
0.29
14
l>H r.iAKV
rip j 1 alI
Rt rut- AT IOC,
;.i c o.soai'y
riri'i act
PI Ct- FA I'l llhi I WR 1 (.A i Iil.i
I. • V I .1 ' LICK
vlA I t-.w 1 |J(. V
0.30	n.o	11.0	),*?
/•S	109"' " " "" 57 "" "" 1ti9 ----
0.3h	0.0	1.1b	0.0	4,?.t
" "71	" 1 i 5	" 11 n	71 ~
0.0 _ o. o 	_° • °_ _ •0	1 •s'
""in	1 i 1" ~ lit "	ill"" Hi h
1.4B O.o ?.?7 0.0 7.Qb
	3 6	T i?	n	117	1 n -
5.92	0.0	0.9b	0.0 15.*0
i '"""ill""	48	111-
1.4^ 0.39 1 . b 2 0.0	7>'»
	4l	S	II	1 \ 4 IT"
0.30	O.n	1.31	0.0	S.IW
76	" 115 -~ — 25	I IS	57
0.0 0.0	°.?5	O.O !.?•>
116	U6	50	"IH>	»7
0.91	0.0	1.1b	0.0	S.M
t>2 ~ 117	33	 IJ7 " 51
0.0 0.0 I.09 0.0 4. M
"TiH	ilB	39	HIT	bl"
O.O	0.0	1.24	0.0	4. 'I H
	11 115" 29 119- " h5'
7.52	0.0	2.03	0.0	4.
	n	no	n	no	11 ~
0,70
62
4.74
	J—
1.7b
26
0.0
12  I
1 17
0.0
0.0
0.0


-------
1A PL E 6 (CONTID. SUMMARY OF IMPAIRMENT VALUES RANKED ACCORDING TO USE.
ftuiiATir" aoua riL f'unijt" " 'fiTiMBuv .niVo'.oahv
LIU-	LI h F.	aAIPH	CUM 1 ACT	f'UUIACT	1,1^ - U'Ct
CIH..0 *Atn, WARM wftlFH Mtl'f I.IKS in CHKATinn Pi- CHI ATlivi IKK 1 t.A 1 ) t>M v /• liK|n(, If V
127.	112WKI)	06469000
JAHt.SrOWN HLSLHV01H H H JAMfSTllWN, 140	n .72	0.1/	O.U	0.32	0.0	0.0	O.il	1.1/
109"	7 4' "	1 H	7 4	"
128.	21NDHDWQ	380071
JAMtS RIVER g JArttSTOWN	fi.7h	0.9«	0.9/	1.53	0.0	0.0	0.0	,1.7)
bR	44	75	J1	7T1
129.	112 WHO	06470500
JAMES _RIVLK A'l^LMtlUHJK, JJD	9-5o	*?j15	0*1?_ 			iLrii!	" •	 16 "> 	
so	"	6°	"	in1;'
130.	21HDHDW0	380074
JAMES RJVtH NtST HF HAKtS	1.62	2.67	0.38	2.6 /	0.0	0.0	O.O	1.1s
15	7	109	1 <5	71?
131.	112WK0	06470878
JAHLS RIVER AT NO-.M) MATE LINK	ni}±		0.B9	0.0	0.J)	_0_j» _	O.o	1.20	_
9b	83	"	--------- t p-
132.	21HI)HDwn	380073
CU'lTONWUOP CR bt- K P LAMDUKE	1.73	2.77	0 . '1	2.7/	O . O	0_10	0.0	h, 7 I		
13	9	16	j7
133.	112WKD	06470833
PILOT DRAIN AT (JAKEi., NO	0.1b	0.0	0. 15	0.0	o.o	0.0	n.o	o.lo
"llfi"	li«"			
134.	21NDHDWO	380017
FLM R - ELLENUALE, ND	1.0b	0.0	1.01	0.0	0.0	0.0	O.O	7.Op
¦tf35. 21 NDHDWO	380016
MAPLE R - ELLENDALE, ND			1,0b	0.0	0.0	0.0	0.0	0^0	0,0		

-------
Table 7. Significant Water Quality Trends
Stations and Parameters where Significant Statistical Differences were Observed,
legend: I = Improving Trend; 0 ' Oegradfng Trend; * s Parameter concentrations are at high levels.
Station
o
x
a

o
JC
"O
>
o
r
u
x
HUDSON BAY BASIN
Red River of The ftorth
at Brushvale
Red River of The North
at Fargo	
Red River of The North
nr Perlev	
Red River of The North
at Halstad	
Fe=I
Red River of The North
. at- Oand Forte	
AS=I
Red River of The North
nr- Danhina	
Wild Rice R nr Rutland
Wild Rice R nr Abercrcroie
Sheyenne R nr warvic*
Sheyenne R nr Valley City
Sheyenne R nr Lisbon
Shpvenre ? nr Kindred
Sheyenne R nr Barvood
D* I
_I1.
I (Fe=D
I (B =1
I 1 (Mn=D
Baldhill Cr nr Dazey
Maple R nr Er.derlin
Fe=I
Elm R nr Grar.din
Goose R. nr_HillsborQ
Beaver Cr nr. Finley	
Forest R_nr_ Minto-
_I	1_
Park R on 1-29 	
Pemaina R at Vialhalla
Toncue R at Akra
-__7-0 -!			!— -
Fe=I

-------
Table 7 (cont'd). Significant Water Quality Trends
Stations and Parameters wnare Significant Statistical Differences v,ere Observed.
Legend; I = Improving Trend; 0 = Degrading Trend; * = Parameter concentrations are at high levels.
Station
I
I 3
5 !
i
a.

VI I U1
a I
~ i
'j
i
HUDSON BAY BASIN (Cont'd)
Souris R nr Foxholm
Cd=I
Souris R nr Bantry
Souris R nr Westhope
Pb=l
Deep R nr Upham
MISSOURI RIVER BASIN
i I
Missouri R nr Williston
Pb=I
As=I
Missouri 1 at Garrison Dam
Missouri R at Bismarck
Bear Den 6r nr Mandaree
D* I
D*
Little Missouri R nr H&tford Citi
_E1
D*
(Cd=I
(As=I
(Nl=I
Knife R at Marshall
Fe=I
I I
Knife R nr Hacer.
Cu=I
Cd=I
Painted Wnads Or nr Wiltm
Square Butte Cr blw Center
D*
I
Fe=D
Heart R nr Gladstone
Heart R nr Mandan
Green R nr Mew Kracec
Apple Cr nr Menoken
Canr.oncall R nr Breien
I i
_Cecar_Cr at		
3uf£alo Cr nr Gascovr.e
D*
D*
Fe=I
I Fe=I
, (Cc=I
!(F =1
I m-i
! I
71

-------
Table 7 (cont'd). Significant Water Quality Trends
Stations and Parameters where Significant Statistical Differences were Observed.
Legend: I = Imorovlng Trend; 0 = Oegrading Trend; -1- - Parameter concentrations are at high levels.
Station
L
a
b*
•j
ID

-------
TAULE 0. SUMMARY OF IMPAIRMENT VALUES RANKEH ACCORDING 10 USE.
bTATllHi l.liC'irUiN
AUUAT J C	AOUATlL	HHbl.lC
Lllh	Lll-fc.	rtATfH
CIlLl' k.ArK« warm HMEh SUPPLttS
PKIMBK* M- COUOAH/
CUH'IftCT	riKJ'I'ACT
RtCKF ATIOh RhrKFATIntl
IRDluAT'llll
,f V>- i>1 oCh
hA I HJ 1 Ml,
Sk V
1. 21 SOAK uI	4ftOft71
MISSOURI HIVtP AT H«IU DAM
2. 121MttRLE
LAKF UAHE NK UAI1
4bl.t 01
3, 112WKI) 0b440000
MISSOURI R AT PimHt. SO	
4. 71S0AK01	4606/2
MISSOURI K1VLK A I' »1G DuMP PAH
0. I u
10 1
0.1ft
103
1.
b7
1.0
o.?b^
H ft
n.it.
1.0/
7b
0.67
0 . 7 l>
b H
o.o
(I . o
--7q-
0.0
0.(1
"91
O.il
41
_n.il
h 4
O.O
ti H
0.9]
82
0.7H
5. 121 MPRCfc,	4ftCtRV
LAKE tRAUCVh CASt. »H tLrt CREEK
113
0 . *9
6. 1 12WR0	064b3000
MISSOURI K AT FU«T KAmOaI.L i>0
7.	^ISDAKOl	4fto673
M1SSIII1M1 R. A1 FORI RANDALL PAH
8.	112WNI)	0 b 4 6 6 0 0 0
MISSOURI RCVFN AT S1U0X (.IT*, 1UWA
VI)
-JLvIL.
b S
-ibL
b 4
2 , ft tf
113
117
0.24
Hft
o.9u
«3
0.63
07
0.79
lb
1.7b
VI
l.0i_
76"
1.01
1 04
0.0
1 OS "'
0.0
"TCP?
ft.rt
' 1 00 ~
0	. 0
TOT-
n.79
— 74-
1	• 5 J
bft
0^ n
71
0.0
~^TT
0.0
n. o
S?-
O.n
~W
0. 0
o. o
" 24
n.o
11. o
J7
0.0
~rr
0.0
~7TT
o. ay
?5~
0.0
0.0
50""
0.0
- 90
0.49
9. 21 SOAK 01	4f<0h78
S, FORK Gk AND U. MOKTII BISUN
10. 21 SOAK01	4ftOb7 t
N. FORK CHAMP R. UN AH SH AI)K|| 1 l.L
39
2. b 4
44
0,0
b2
1.81
bi"
0.0
11. 11 2 WRO	0635/">uO
GRAND R AT Sll ADLHI LI, SI)
12. 21SDAK01	4MI640
GRAND R1VLH A'l sHADkHlLL
13. 112WHI>	Ob357800
grand r at little faclk so
14. 21 SOAKO1	4h094S
GRAND RIVER NkAR LIlTLE EAGLE
15,	2I5DAK01 460039
MURt.AU	RIVER hFAh	IIS'l'A
16.	21SPAK01 4b0935
MOREAU	R1VFH NFA R	MU'IEIIUR.>h
17.	112WR0	Oft 360 500
__MUR6.AU R (Ik AR WHITEHORSE SO _
18.	2 I SOAK 01	4ftOH 7 S
CHkYENNE R A'l t net- M«.IU f
109
0.21
"iuo
0. 3 J_
yb
2.5;
4?
D.O
To«
H.3D
1?
K ) 4_
31
? .Ob
b 3
O . 3 9
b 9
TTT
0.0
162
0.0
~B(T
4.0b
ri
5.04
"To?
1 .Ob
65
0.0
tit-
J.99
23"
1 .fiO
~"b3 ~
14
J. 3 )
39"
2.40
3H
1 .BJ
58"
2.9 4
~o7~
1.3 1
11. o
"TI?"
~i>r
0.0
~lo"
0.0
0.0
iirr
0.0
5h~
o.7o
" «7 "
11.0
9R
0.0_
"i i
-------
TABLE 8 (CONT'D). SUMMARY OF IMPAIRMENT VALUES RANKED ACCORDING TO USE.
is T A I 1111, LdC&IICIH
20. 21t>OAKO|	4buhb 7
FALL R 1 V** K iiFftH ruUFMItliCh
21. 1WWKI)	06<|02h00
CHbYF.HNt R UK.AI>IUIl t AljO l,Al' i>D
22. 21SUAK0I	4 h 0 H h b
CHF YF IHJb H I'b Art > A.S I A
2J. 2160AK0)	46HHMI
CHFYtfiht KlVtH jK (It PL A1U V 1 bl<
24. 11 2WR|>	Ob439300
CHF. Yt Nht K AT CHt-WKY CPbF.K SO
25. 1 12WK|i	O64.»9b00
CHFYF'NMb H liHAW KACI..F till I 'L I- SO
26, 21 SOAK 01	4MH01
FAI.I. RIVt-"K T7b l<5K SFCTll'U 24
27. 21SDAK01	4 60100
FALL. RIVKR 17S Ubb .SKCTIUIJ 13
28. 21SUAK01	4601U 2
FRK.'JCH CRE.LK 1 IS K4b bKCTlUli 27
AoIImT IC	AIIIIMK
i . r t k	I.UK
Cl'l.o WAll'R WARM WA1FH
19. 112WKII	OMOIbOO
CMtYKliUF K liF LHw AHI.I >S1 UK A DAil i>
I'UU|. I C
UA I't- K
St'HI* I, Its
PHIHAHY
run tact rti" 1'At.T
MtrRF" ati nn PFrnRATin'1
i i vn.i uri
irk t(,A i iini ii«rniini,
.h v
0.1^
0.70
"79
-J1- '7
•4 3
14.2H
0.0
112
0.9H
b9
0.1 J
95
1 (I . h ]
J.49
31
J
60
"23"
1 .04
0. (>
luH
1 . 60
" 51
0 , 0
1 16
7.23
J> , 1 4
b 1
0.0
72
0.0
73
0.51
0. H I
~-2-
0.0
1 19"
1.1 o
35
O. 7 . 2 b
13
6.30
74
-14.19
" 3
10.62
30
49.68
?
0.76
4<>
2b. 3h
	2-
1. 30
77
o.o
" "23
1 .1 (i
2
io.io
9~
0.94
5
20.3o
4
0.0
tl
0.7»
"71T
0.21
Tofi
1.02
3 . h 4
1.04
~i>T
0.20
b?
1.9J
47""
0.0
If.
20.30
" 9
4.12
	33
ft . 70
	27—
o.2 1
20
0.76
J2
0.98
4,hh
M 6
S.01
	h3"
S . 4 H
bf)""
3S.2J
	i7—
133.^ 1
- - ?—
t. 4 . 9 7
	r~
IT
0.60
tit
1 .04
~l2
	(j—
r.. 1 o
~S0 —
14.11
41"
0 . 6H
~rrn
0.28
0.0
5.75
~9fT
0.0
9~T"
0.0
~9T-
0.0
2fr
o.o
TO 9
14.71
-"39-
2.77
~~rs7~
0.71
11 r ~
0. o
1 p 1
0.0
1
0.0
119 "
2.2/
1.)l
I ft . Mb
"29
29. 216DAK01	4oo6b3
FRFNCI1 CRF.fcK "F AN CUSlHi
30. 2 12> U A K 01	4606b 1
FHtNCH CRLFK IN ClISTFR bTATK pK.
31. 21 SOAK 01	4 60103
HATTLF; CRFLK 17S Rht SFC1XUN 8
32. 215UAK 01	460905
BATTLE" CHLKK nFaH KbYbl('"h
33.	21 SOAK 01 460650
CRACK CUDLIUGb IRFFK		
34,	21SDAK01	4*06b4
SPRINl, CRbFK AT Shl-HIUAN |,AKF
35.	21 l>nAK01	4b0649
SPRING CKtF-K Sf)UT||Ur.S1 UF RA^IL'
36.	113FURS2	460bOO
RAPID rH AT HI ACK HjA (.1,
2.97
b9
5.70
T6
0.7 6
19
0.76
34
n.7»
—9T
0.0
—79-
0.0
TS
°,11
*104
0.0
" 1 ITT"
0.0
1 2(V "
0.0
To5"
0,0
10;
3.13
J 4
77
JO. 11
"96
0.0
"TIT
0.0
99 "
0.0
"1170
0.0
lul
3.13
37
TIT
0,0
116
0.0
" 1 i 7—
0. o
llH
0.0
T07
0.0
lOM
7. 3b
7
TK~
0.0
1 o'i"
0.0
"11(T
0.0
113
O.o
I 14
1.63
bH
o.7>»
t)*1
"9T"
0.0
94
0.0
9?T
0.0
96
0 . 0
—97 ~
0.32
4S
n. o
S<)
"JT"
0.0
lor""
0.0
"TOB
0.0
109
0.0
TT6
0.32
hi "
0.0
J20"
~3TV-
0.0
.. 3) -
O.o
"37
0. (1
33
0.0
— 34
0.0
3S
S . 00
~ I

-------
TAHLE 8 (CONT'D). SUMMARY OF IMPAIRMENT VALUES RANKED ACCORDING TO USE.
is r/il 1'Hi LIlKUl'N
AOHAT It
I.»r t-
rijI i> ivft 11
AUIIA ) ) I
1.1 tf.
U ^'AR.'I wATJK
Hum. j c
i A i I H
MIHi| Tt-S
PKMiAHY
C tin 1 iCl
;,f ( ciumaPy
rup' I i\(.T
»tcnM I'lini Ki-riiFM ntni
IRK U.A i I nil
1.1fM i'i *
•'Al t- H 1 i.i.
Sr V
37. 113f- OPS2	46n6u7
NORTH li API I) CHH-..K AT S.I-APll) I HK
3H, 2151'AKO) 4 60b 4 7
HAI'lD CHH.K (ItAH HKIiHiUP 	
39.	11 3 (¦ (JRS7	46n56S
PAT'lOLA RKSUWUH AT CI^Vl t-R - SD
44. 21SDAK01	4M1910
RAPID CKH>.I< HtAK MKMlUOMALt
?. M
¦*7
1' • s_'
27
n. o
114 "
lis
o. o
"if*
4.7b
" "21
J. 70
27
7. 39
3.1U
JB
4.5/
77
0.0
10 7"
lofl
0 .0
To9 ""
">.33
13
7 .02
16
3.33
-4	4f>
vn 4b. 112WRI)	06409000
CASTl.t CH AHOVt l>h E HF1 FLl> RtS HtAR HILL	1.40
56
46. 113tUH.->2	460572
IT
0.53
8.79
S
0.0
11?
<>.'»
113
0.0_
114
(1.0
'lis"
2.25
41
0.61
__>3
1.02
0.0
117
-i*5
jm"
i) . n
0.0
— ^ -
0.0
" 9ft
41 .R4
0.0
till
0	. 0
" 1 0 4
n, n
1	us"
0.0
I Oft
0.0
107"
13.11
0.0
121
o.o
75"
0.0
0.(1
— 7S~
0.0
"" 79
13.11
7.02
—2S_
H .20
4
13.11
" " 5
o. o
3
0.0
ST3"
o.o
OtEHFItl.l) l.AKt AT CllVfc. bliAT LfiCH
1.1b
HI
1 ,1H
47. 2IKUAK01	460646
CASTl.t. C R t tKNE. A R MYSTIC
48. 21SDAK01	460925
POX KLIH.R CK^KK Kl M< Ni;iin
b 4
0.40
UB
0.0
TT
0.35
7fl
0.0
12l
0.0
Tor
—27T-
0.5«
t r~
II . 1)7
"TIT
o.o
B5~
o. (j
TI?
o.o
1 6
II. II
0.0
B5
0.0
49. 21SDAK01	460679
BOX ELDER CRK A1 fJEh HhOmwfJOl)
50. 112WKI)	0642U500
BtLLF l-UUKrht: R A 'I l» V -SI; JjlAlE LIHt
110
7.19
51
•5.74
yP
3.03
39
1 . ft 9
Tor
0.0
51.	21SDAK01	460H90
BtLI.K IUIJRCHt_U_AR_Bt hLt Fl'QRC
52.	112WND	06454500
IHLtT CAUAL NEAR 1)1 LLt H'URCHfc. i>
53.	21SDAK01 4606B 3
JJELLt TCI't, _H, AIMjVt CUWH..	
54.	21 £>l>AKU I	4606B1
BE I, Lb hCHK . K. hbl.niv CI I" r 1,'IH.CF	
1 7
2.06
52
_0. b I
Hfi
1 .02
ob
0.57
»5
~W
O.B5_
74
0.85
"/ S
0.0
103
". 0
1 u4
Toy"
1.39
b4
3 . h(i
"fi-
3. 46
37
2.72
"4j~
4.63
is
7.6 5
is
_71	
0.35
~ 81"
o.o
To*
S.64
i6
0.52
7>)
0 . 5 J
7 li
0. 05
o.o
111
.) . 0
"IU"
TIT"
o.o
rir
o.o
~5T
0.0
—ffn"
0.0
TTT"
o. o
T19
O.o
-J77T
o.o
1*21"
0 . 0
~ST
0.0
sr
0.0
"54 "
99
0. 29
~6fl_
0.44
67
0.75
4 4
o . 0
1 .93
~ 17 "
1 .bO
~ 25—
s.'lil
2
O.o
1R
o.o
19
0.0
"4ir~
0.1'
41
0.0
T7"
o.o
"IV
O.o
TT
0 . 0
" 45
II. o
~iK~
O.d
" 4 7
0 . 0
~4 R~
o.o
—,lo-
ll. 0
—5T
O. 0
—51
II. 0
—57
0.0
" sr
11.0
—54"
10.19
~ ft
13.7.!
»4
0.11
1 I 1
0.0
-1 rv
0.0
1 if
h6. 4 1
I w . 36
_ _.3_
14.94
	3R~
7 , S 9
"5q-
1. 34
-94—
1.11
1 Oft"
0.0
T17—
17.55
~ 4« ""
17. 75
—5n~
7.69
n 4
" BR~
7.S7
6 R ""
\ . 7n
-fiS -
CO
o
c:
o
o

-------
TABLE 8 (CONt'D). SUMMARY OF IMPAIRMENT VALUES RANKED ACCORDING TO USE.
ITfiTimi I.UCA I I nil
AuHATlC
L T H f
Ti)l L. t ATI* K
aouA'i Ic	piini.iC	I'kmhi'Y svLni.nftHv
LJI-t-	..All-H	CIIUIACT	Ci "I i AC T
"A»I' l«Aim hlipPLTl.S Hi MfpA I Iflh	CHt l\T J fill
1.1 i/l '» Tl If K
r i
57.	2 1 »¦» D A K o 1 4Mli 7n
_Hfc.LI.l- HIMHl'lit MW_Hf M." M'KlftGij	
5H.	IIAKC 064 JHOO"
HLM.I-	l-UURClit K I'l-nl. HjM M'H IIH.& SI'
I ,?h
t>3
0.21
SH
I . 49
55
^<>.31
59. 2 1 Sl>AKij I	4MIH95
Pt-DhATI H H AT I'H.W F IJlilfCHt
60, 21SDAMJ1	460901
SPfcARMbH (.h IN SI'l-ftHn&H .SI)
_0 . 6 5
hi
o. o
0.94
70
<1,14
97
J»-»2
59
15.30
6
0.1 3
94
7.44
36
«.V
17
1.79
59
f>. 2 1
1 1
J,7 U_
44
61. 2 150 AK 'J L
SPRLAkK i.Sh thlfch
4 h 06 8 9
Wll.f KlfttH liH) HA1LR K
67. 11JH1R;,2	4606)6
AhtyFTKKtK A 1 111 (,»»./> Y 14A
1 1 I
_0.° _
1 12
4.03
ON
63, 113KUPS2	46o6|5
I RUM Cl'hl-K AT HltjHhAY 14A
64. 21.5DAK01	460675
0.5 MILLS ,S JIJIU' ll.S. ImY Hb 365
2 3
2.29
4~U
0,39
110
0.0
"ill
4.03
30
7.2 9
119
0 . 1 0
"101 "
7.41
o.;/
us
0.14
9 I
7. 3n
57
2.53
4 9
3.62
4 2 ~
0	. 0
"IIh
o.o
1	19
0.52
0,0
55
0.0 _
56
0.7 2
^9
0 . HH_
"" 26
0 .60
36
60
0.0
" 61
0.0
' .32
31
0 . MO
' 43
1.20
~ il~
1.7/
0.4 b
of'
o.o
"To*
o.»
T 05
o.o
44
0.0
H.79
"4
0.0
ttO
o.o
12 r~
9 . 40
62
0.0
106
0.0
63
1 .8fl
T ST~
l.B«
65. 21SIJAK01	46O660
WHITEwnOD CKEH- lit IJh DhAOWUUU
66. 21S0AK01	4606B6
WHI 1 LW01II> CK. AHdVK GOLD RUN CK.
91
2.41
45
0.0
67. 21 bl'AKO 1	460659
WHITtWOUli CKfctK At HI.UHA
6B. 21 SHAKO 1	4606H5
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26 "
0 . 0
1 14
3.16
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104
2.00
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69.	21SHAK01 4 606 5 8
WHITEWl'UO Cl'Jfc. t K	A HO V I- HQI'KMAK t_
70,	2150AK01 460bB 4
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0.0
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20
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4.01
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71,	2lbDAK01	460*52
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72.	21SI>AMi1	4 6 0 6 H 7
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7.17
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2.7 3
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0.17
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69
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0.61
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0.0
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9.0 0
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7.6h
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5.0o
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0.0
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13.55
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27.99
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10.34
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0.51
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-------
TABLE 8 (CONT'D). SUMMARY OF IMPAIRMENT VALUES RANKfc.fi ACCORDING TO USE.
A')IIAT I (	AOIJA1 ll	k'OM.IC	PKIhIAKY SV (Jinn/, P y
STATliiU IJiCAltiil" I r ~ LlFh nAI^H Ciil'IALT	CU'I1 ACT	l,lvl.SlUDAK0I	46u6'»b
MfJCCAhlt. CUbh l< Tl??l> K6 |h M-If lull 13 22.?<1	36.9t> 21.7X	«?.»/ 7S.00	2b.39	O.n	VM.7J
i	l " I	j t	i"	91	1
92.	21.SPAK01	4bu696
TURIl.h C H !¦ b K lll*u HftlM M.CIH1N 1 2.M7	4.02 4.4b	5.7J 0.0	1 . «• 2	n. 11	!".»>»
~ji~	" ii " iO	js y?	74 "	" v7	" j<>"
93.	21b»AK01	46069f
TURH.b l_Rfc> K I'llfn K64W .ShC'll (lM 35 <.)0	4.90 1.67	15.1 » S.76	2.93	0.0	J'>.4n
35	24' ~ 7H	1> " q	9	" 01	]6
9 4, 21SI'AKnl	46u6nl
VLHMIjMIIH KI Vt- H k. UF CHAUOLLOR ) . "j	1.51 0.99	1.S2 <1.43	0. 6 4	".0	6.41
62 "	57 " HI " b3 " " 41	3B	"" 94	V 3
95.	21 SI)AI\ 01	46075b
_ VbRMILL 10H K ut A« J.AMIUUA	 l.*4	_ ?.?!> I.0"	21.17 9.00	4. 6 1	n.O	<1 / . P'j
b4	45 73	6 ft 	7	yS	12
96.	2 I £>1) AK 01	4606bb
BIG SIOUX HIV bR AttOVb bAI'l KIOttN 0.H3	0,8* 0.50	7.5b 0,1b	0.35	O.n	5 . 4
Is	72 96	4tt" " 44"	65	96	til
97.	21bHAKol	4 6 u 7 4 0
BIG S1IHIX HtAU fcAUkluwij 7.2/	3.14 1.3b	5.79 0.36	0.3b	O.n	13.7;
- 49	3ft ~ 6b	3 3 41	64	97	47
9H , 2 1 SUA K O1	46ii662
nil. SIOUX RlVbH CnlbTAKV | 0.99	0.91 1.10	23.73 9.00	9.00	n.O	44.73
^	_t ,_,j	7 ^	^	^	ir_
00 99. 21SUAK01	46o702
BIG SIIIIJX R1VKR WhAK UKDMKlNGS 1.311	1 . b2 l.OH	7.0u 1.51	l.bl	0.0	14.Oi)
~ 			 til ~ " ~~5S	17 " ~2»	U?	21	Of	43
100.	21SUAK01	4bHilH
BIG SIdUX HUHIH 01 H.AHDHbAU 7.6b	3. 19 0.63	1 .4b 0.0	0.0	0.0	7.91
46	34	9f>	M	TOrf	TOO	TOO	T7~
101.	21.SDAK01	46066)
BIG S1UUX FAST (Jh >GflN uN SI) 34 ^.72	2.63 0.52	1 .44 0.0	0.0	0.0	6.HI
— bVl	" 4"! 	$V	66	""101	101	101	" "" 70-
102.	112WK0	064H1UU0
UIG SIOUX H IJI.AK ULLL KaI'JDS Sl> ?.HJ	2.5b 0.40	3.54 0.0	0.0	0.0	9.3 1
30	42	38	41		102	T02	TO7" 	5R-
103.	21 MlAKOI	460703
Hl(. SIHUX WIVbR Uh M' Dl-LL HAP10S 1.41	1.51 0.4u	4.Hb 7.0/	2.0/	0.0	17.34
bH	b6	97 ~ "	37 "16	15	" 10 3 "" 49"
104.	/IbOAKOl	460664
BIG SIliUX If. blUUX MlikS 1.19	1.5B 0.61	2.4H 0,91	0.91	0.0	?.(«
- ^	57j	q2	5r.	2*?	51	10 4	6 3—
105.	112WHH	064H 2*»20
BIG SIOUX R AT MllJIti CLIFF AVt AT SIOUX 10.7b	13.06 4.9/	l?.fl/ H.4H	5. 16	0.0	7b.Il
__ _ _ h 		_i5	. 	fi	(___			fi_
106.	21.SDAK01	46H.S/9
BIG S1UDX lltLH.il t>IljUX 1 ALLi> »lilH 6.24	9.51 2.41	7./u 0.7(t	0.70	0.0	/7.14
p;	fi	3 T	7 J	371	T7	T"u K	1""~
107.	2 1 St'AK01	460831
BIG SIOUX HIVkR AT I'HANDUII S DAK H.H/	14.9(, 3.2b	9.47 0.7H	u.ly	0.0	37.0b
. ...	- "j} - " " " J 7	46	7J	- 107	" 11"
10B, 21SDAKOI 4 6 066 5
BIG SIOUX H1 V K R b AS 1 ut CAA'llM 5.6)	7.92 1.91	ft.Vj 0.0	O.U	0.0	2 1 . H s
is 		ia~		40	 if;	rca	ri	ion	21"

-------
TABLE 8 (CONI'D). SUMMARY UF IMPAIRMENT VALUES RANKED ACCORDING 10 UGC
S I A 1 in,, Lm A i lull
MJliA I 1C
L.) t K
chi d
AOUA'l J C
L1M
wamh wA'im
I'lllM.lL
A 11- K
bHt-PI.1 tf
109.	21SDAK01 460bf,6
BlG_SlliUX HIVfH	t».Vl_U( Hlllljull
110.	21 SI>AM>1 46lJbb /
Bit! SIOUX KlVtR	hK HI- ALCtSim
111. 112WRD	064Hbb00
IUG SII'UX R AT AKrtlil. 1A
112. 21 i>() AKOI	460HJ2
RIG SIOUX KJ VLH i.kAH Hlt.HI.ANH Sp
113. 21M3AKOI	4 6 ti 6 H 7
SOUTH FllRK YtLI.Ofc HA Ms lik.AKhN HPHPbR
114.	21far>AK01	4h(i6H0
NORTH	IUHK ULL.Uh DANK i.kAH Mn BPKDbR
115.	21SDAK0I	4t>0b9U
SOUTH	FURK *HtTi>llJNt. K, _AHHVt_5TP	
lib.
21SDAKO I
4bu691
	^SOU TH fOHh WHk TS1 K. nt I.Oh MP
VO
117. 21bPAKu J	460 7 00
WHt TSTUHb R flbAK L)H. SlIiNb CITY
11B. 2\M>AKOI	46ob9R
LITTLt I1IH1H SOTA	R I V tK_ Il26h MS IF St-CHH
119.	21SDAKOI	46ub99
LI TTIAK01	460710
L1TT1.E KltlMLSm A	« W» AR ^ V- t. V 	 	
5.37
^0
1 . 6R
~~ 2 8
1.7')
29
"7
1 .8t>
5 3
4.76
21
1.01
It
1 .07
"7 > "
1 ,i)7
/ 4""
1 .31
h f>
1 .20
"70"
sv (.n-nnPv
Cun 1 m T
R t C n ^ A T111 ij
(PR I OAiInn
5. Ill
' 30
0.37
47
0. 1/
63"
O.o
1 (10
/ 1 . ot.
" "24
I. li
41
n.s 9
~ 37"~
0.5V
53
0 . 0
-i rn-
11. (id
—47 ~
7.41
J 3
1 .57
"21"
1.57
'Id'
0.0
111
1 R . I d
34
5.91
_ ii
1.111
24
1.10
~Tf,~
0. 0
11 r
14.3/
4r>
1 ,9b_
b4
0 . ¦» (1
40 "
0.4b
-s9 -
n.o
I 1 3
5. 3 1
h?
0. 7o
7b
0. 0
114
0.0
-
0. ii
"U r
3 .OH
-97--
1 b , r> i
10
4.R5
1 1 "
7.49
12
0,0
115
36. /'j
1 5
9.05^
19
jn. 1 b
4R~"'
0.4 9
' 57-
o.O
116
/ 7 . f i
/?
1.13
6)
0.0
1 17
0.0
"117
0 . o
117
4.10
<.)
O. 1 J
7> "
o.O
11 (T
0.0
"118-
0	, n
1	1B"
3 . 6 H
0? "
5.H4
32
1 . 60
~2f>- -
1.0b
" 37 -
O.O
119
1 4 . •! b
37
6. 1 3
1 .98
_n—
1.^1
—jn—
0.0
* 1 70-
17.13
~~S1~
7.44
51
0.67
31
0.67
"49 -
0.0
lil"
5. R2
" 77

-------
Table 9. Significant Water Quality Trends
Stations and Parameters where Significant Statistical Differences were Observed.
Legend: I = Improving Trend; P = degrading Trend; *• = Parameter concentrations are at high levels.
Station
Bacteria
U
o
l_
z
(A
3
0
¦C
a
in
o
a!
Oi ssolvcd Sol ids
Suspended Solfds
Aiianonia
Sulfate
Chloride
Calcium
Hardness
Metals
MISSOURI RIVER BASIN








| i
! I
Missouri R at Qahe Dam



n


I)

1 |
i D '
Lake Oahe

0
!
1 D


D
! i (N1»D
(F -I



!



j (Zn«=D
j (Hg«=D
Missouri R at B1q Bend Dam


i
i D
I

i |
D 1 1
j
Lake Francis Case


I


1

(Cu»D
(Cd=D








I

(Fe"D
(N1-D








I
i i
(2n=D
(Hg=D
Missouri R at Ft. Randall Dam


D
D


D
i
! 1 °
Cu°I
Missouri R at Sioux C1tv. IA

p
P
D
I*
D
j i
did!
0
(Mn=D
(Cu»D
Grand R at Shadphlll



T*
T

1 i
1 ;
T* ¦ T


Grand R at Little Eaqle




I*

!
!


Cd»I
Moreau R nr Whltehorse




I*
|



Cheyenne R blw Angostura Dam



I*


I
i
1 ! 1 1 1
Chpyennp R nr Buffalo Gap









I
Cheyenne R nr Wast*



n*







Cheyenne R nr Plalnview
D*





1
1
1 1

Cheyenne R at Cherry Creek	
French Cr nr Custer	
Battle Cr_ nr. Keystone	
Spring Cr at Sheridan Lake	
Pactola Reservoir
Rapid Cr blw Pactola Dam
I
! I


i .
i ; i Zn=D
i Cd»I
1
I

D ! ' ;

1 | i 1 i
! 1 o 1 i !

: i ! 1 i ¦ ,
i i 0 i I ; : !
i
i
i
1 0

I i
ii-
i
i
1 !
' 1 1

I
: i
; j
i i
i
i ! 1
Deerfield Lake
— o
CO
o



-------
Table 9 (cont'd). Significant Water Quality Trends
Stations and Parameters where Significant Statistical Differences were Observed.
Legend: I = Improving Trend; 5 = Oegrading Trend; * = Parameter concentrations are at high levels.
Station
Bacteria
Nltrogen
Phosphorus
Dt ssolved Sol ids
Suspended Solids
Aiunoma
Sulfate
Chloride
Calcium
Hardness
Ul
(9
+*
0
X
MISSOURI RIVER BASIN (Cont'd)





1
i




Rnx Elder Cr nr Nemo
I

i
i






RpIIp Pnurrhp R at Rp*. Tnlpt


! n*


IT*
i
!
D

Pflllp B nr Stnrglc




T
i i
i i



Redwater R at Belle Fourche




I
i




Soearflsh R at Soearflsh



0
I


1
1


Annie Cr at Hwv 14A







!

(Pb*D
CdeD
[Hq°D*
Jrnn C.r at Hviy 14A



0



; i
! !
Cd°D*
As=P
Whltewood Cr nr Deadwood




I


1
j


Uh1 tpwnnri fr at. Pluma



D*
I


' 1
1 1
1 1

HhltPViWl Cr "hu ^f>"o«talfp

I




1
I
i



Whltewood Cr nr Uhltewood



D
I






HoriP fr nr Valp



0*





!
Bad R nr Ft.,Pierre

T



i
i
i


i
I
i
White R nr Kadoka
D*

1
1
1
i





i
i
White R nr Oacoma



I*




j
! Cd= I
Little White R nr White River


1


i !
i 1 i i

James R nr Hecla
.
!
1
I
1
•: i : ; i
I ! i
James R nr Statford
1
1
1
D ' I
I 1 1
1
1 1
James R.abv jjurcn	
James R at Hurgn _ 	
James R abv Mitcnel 1
James R blw Mitchell
!,! i ¦ : : : ¦ ¦
1
. 1 _J3*
1 : 1
r
i i
	
1
I
i i
! i ¦ 1 ;

I
!
i j i*
j j
; t
		; 1 I *-	L	^	L. 	i
;	I	i	i	i	¦	I	•	I
i ! si | | | i i ;

-------
Table 9 (cont'd). Significant Water Quality Trends
Stations and Parameters where Significant Statistical Differences were Observed.
legend; I = Improving Trend; 0 = Oegradmg Trend; = Parameter concentrations are at high levels.
Station
Bacteria
HiLrogen
Phosphorus
Dissolved Solids
Suspended Solids
Anuionia
Sulfate
Chloride
Calc Han
A
4)
c
"O
j2
Meta1s
ISSOURI RIVER BASIN (Cont'd)


1
1 !




James R nr Scotland


1
1
1

|
1


Cu»I
Vprpiil linn R nr Chancellor

I


1 !
1
J 1
1 I
B1q Sioux abv Waterton
1

! 1
1
I |
! 1 ! 1

1
B1a Sioux nr Waterton



I

I i
;
1 ! I

i
!
Big Sioux nr Dell Rapids

0




1
i
j Hg=D
B1g Sioux R at Sioux Falls

I
1*

0*


1
1 i


Big Sioux R at Brandon



I
D*


1
1


B1q Sioux R nr Canton
0*
0

I



! 1
I

B1a Sioux R nr Hudson



I



! i

B1q Sioux R nr Alcester

p




1 j
i
1 ¦


B1g ^inn* R at. fllcron

n




|
1 1


B1a Sioux R nr Richland
D
D

I






Whetstone R nr Biq City
I*
I



1
i
1


1
Lac Qui Parle R at Gary
I








!










i








1
!


1
i
!
! 1 ! 1 :
i : ¦ :
1
- 		
1
! i 1 ' '
! !
	
' s ' : ! ¦ ; ¦
1
1 1 1 i 1 :
I j | | |


; ! 1 1 i 1
1 ! : , !
1 ! ¦ ' i

l	,	t
i nsa-i t

-------
ffil'LE 10. SUMMARY OF IMPAIRMENT VALUES RANKED ACCORDING 10 USE.

AOUAT1C
AOUATIC
public
PRIMARY
SFCnNPAR V



ST AT 1 UN LOcATION
LIKE
LIFE
MATER
CUNT ACT
com ACT

LIVESTOCK


COLO wATtR
WARM WATER
SUPPLIES
RECREATION
Rt TRFATION
IRRIGATION
watering
SEV
1. 112WRD 10020100








BEAR RIVER ABOVE RtSEHVUlR NEAR WOODRUFF
0.53
0.74
0.0
1 .03
n. n
o.o
0.0
2.30

7 9
59
78
37
bo
6b
54
76
2. 112WKD 10039500








BFAR H AT B0R1JER WY
3,80
2.00
1.66
7.12
0.0
o.o
0.0
9.59

40
47
43
29
59
47
72
44
3. 112WRD 10126000








BEAR R NR CORINNE
2.27
1.24
0.76
1.62
o.to
O.lH
0.0
6.17

58
54
t> 4
32
49
40
3
59
4. 112WRO 1012 b600








MALAD R NR PLYMOUTH UTAH
0.19
0.0
0.0
1 .62
0.10
1.07
0,0
1.27

86
66
71
31
47
24
4 v
ts?
5, 112WRO 09163530






I

COLORADO RIVER BELOW COLORADO-UT
3.13
5.25
1.25
0.0
0,10
0.0
0.0
9.*3

48
20
54
113
48
65
5
42
6. 112WKD 09lBOSQO








CDLOHADU RIVER NEAR CISCO UTAH
6.26
3.13
1.41
1 .38
0.0
0.15
0.0
12.32
-
24
J4
47
34
61
41
6
30
7. 21UTAH 495700








CULOHADO R AT US163 CHO&SING
1.05
1 .05
2,10
0.0
0.0
0.0
0.0
4.20

7 ^
56
30
1 12
62
46
7
67
8, 112WRD 09183210








COLORADO R ABOVE MILL CREEK NEAR MOAB, U
5.23
3.31
1.29
2.38
0.0
0.28
0.0
12.49
, _ .
30
33
53
21
63
38
8
28
9. 21 UTAH 49S636








H/PACK ck
3.60
5.60
1.41
0.0
0.0
0.0
0.0
10.61

43
19
48
52
64
48
9
35
10. 21UTAH 495232








CULORADU K ARM L POWELL NR HITE
1 .20
0.0
1.14
0.0
0.0
0.0
0.0
2.35

71
n
57
53
65
49
10
75
11. 112WRD 09360000








COLORADO R AT LEES hFRRY, AZ.
2. 89
0.77
0.66
0.0
0.0
0.0
0.0
4.32

53
58
65
57
70
51
11
bfi
12, 21UTAH 495090








VIRGIN H AT CO HOA" XING IN ROCKVILLE
4.50
5.00
0.0
0.0
0.0
o.o
0.0
9.50

34
21
109
102
71
b4
12
45
13. 11UTAH 495020








VIRGIN H St ST GEURGE AT U-64
29. 13
29.13
4.52
0.0
0.0
1.14
0.0
63.93

7
3
11
110
72
22
13
5
14. 112WRD 09415000








VIRGIN R AT LITTLEFIELO, AZ
8.55
16.72
2.34
16.72
0.0
0.75
0.0
45.08

19
8
26
3
73
32
14
12
15. 21 UTAH 495009








SANTA CLARA RIVtR SE ST GEORGE
0.0
0.0
2.82
16.72
0.0
0.0
0.0
2.82

92
84
22
7
53
78
15
73
lb, 21UTAH 495120








VIRGIN RIVEH-ZION NTL PK NARROWS
0.0
0.0
0.52
0.0
0.0
0.0
0.0
0.52

1 OS
87
67
46
54
91
16
8 8
17. 21UTAH 495095








H FK VIRGIN R JUST AB ClJf'L W/E FK V1HGIN
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0

91
92
72
48
55
93
17
100
18. 21UTAH 49M75








KANAB CR AT U1AH-ARIZ. STATE LINE
23,03
18.77
4.03
0.0
0.0
o.o
0.0
45.83

11
7
14
49
56
99
IB
11

-------
TABLE 10 (CONT'D). SUMMARY OF IMPAIRMENT VALUES RANKED ACCORDING 1U USE.


AUHATIC
AOUATTC
PUHLIC
PRIMARY
SFCnUPARy




STATION LOCATION
LI ^ E
LIFE
WATFrt
CUN TACT
CONTACT

LiVF STOCK



COLU HATER
WARM WATFR
SUPPLIES
RECREATION
RECREATION
IRRIGATION
WATERING
St.V
19.
112WKD 09403600








KANAB
CREEK NR KANAB, UTAH
0.74
0.0
o.o
0,0
0.0
o.o
0.0
0.74


7b
69
96
50
57
42
19
US
20.
21 UTAH 4951 85








PARIA
RIVER AT US-B9 CROSSING
35.00
7.00
2.88
0.0
0.0
1.24
0.0
46. 1 1


6
16
21
51
58
20
20
9
21.
112WRD 09366000








SAN JUAN RIVER AT SHIPROCK, NM
14,66
5.61
5.10
2.21
0.29
0.29
0.0
^8.17


17
18
7
25
23
37
21
17
2?.
112WRD 09 319500








SAN JUAN HIV EH NEAR BLUFF, UTAH
28.05
12.01
2.47
3.00
0,13
0,42
0.0
46,09


8
11
23
19
42
35
22
10
23.
112WRD 09J33500








DIRTY
DEVIL R AB POISUN SP WA NK HANKSVI
0. 35
0.0
0.0
3.00
0.13
0,19
0.0
0.«>4


81
91
77
20
43
39
23
87
24.
2 1 UTAH 4954 30








DIRT*
DEVIL R-AB CONF H PSN SP
41.7 3
16.63
3.67
0,0
0.13
1.49
0.0
63.52


4
9
17
58
44
16
24
6
25.
21 UTAH 495230








DIRT*
DEVIL ARM OF b POWFLL-HlTt
1 .02
o.o
1.19
0.0
0.13
0,0
0.0
2.72


74
102
56
66
45
53
2 5
78
26.
21UTAH 495438








FREMONT RIVER NbAR BICKNELL
1.60
0.0
0.0
0.0
0.13
0,0
0.0
1 .60


66
65
99
67
46
54
26
81
00 27.
21UTAH 495433








¦*" FREMONT R-ULD U24 CROSSING
15.35
5.90
2.29
0.0
0.13
o.o
0.0
23.54


16
17
27
69
37
57
27
21
28.
1 12WRU 09330000








FREMONT HIVER NEAR OICKNELL, UTAH
0. 36
0.0
0.0
0.0
0.13
o.o
0.0
0. 36


80
67
110
70
38
60
28
89
2").
112WRD 09332700








MUDDY
CK AT DELTA MINE NR HANKSVILLE, UT
50.07
19.77
3,33
0.0
0.13
1.66
0.0
74,83


3
6
19
71
39
12
29
4
30.
21UTAH 495500








MUDDY
C OLD U24 CROSSING
1 .57
0.0
4.80
0.0
0.13
3.40
0.0
9.77


67
70
9
72
40
2
30
40
31.
112WPD 09332800








MUDDY
CREEK AT MOUTH NR HANKSVILLE, UT.
50. 16
100,00
4.32
0.0
0.13
1,90
0.0
156,39


2
1
12
73
41
10
31
1
32.
112WHD 09234500








GREEN
RIVER NEAR GRLENDALE, UTAH
0.0
0,0
0,27
0.0
0.0
0.0
0.0
0,27

-
no
72
68
74
74
69
32
90
33.
21UTAH 493810








GREEN
R IN BROWNS PK AT USGS STN
1.13
0.0
0.0
0.0
0.0
0.0
0.0
1.13


72
73
90
82
75
70
33
83
34.
i 1UTAH 493790








GREEN
P AT DINOSAUR Np U149 XING
3,20
5,00
0.0
0.0
0.0
0.0
0.0
R.20

-
47
22
95
83
76
71
34
53
35.
112HRD 09261000








GREEN
RIVER NEAR JENSEN, UTAH
0.11
0.0
0,09
0.0
0.0
0.0
0.0
0.20


87
86
70
84
77
72
35
92
36.
112WRU 09307300








PAR IETTE DRAW AT MOUTH HEAR OURAY, UTAH
2.05
1.04
5.H3
0.0
0.0
2.63
0.0
11 .54


61
57
6
90
/ 8
6
36
32

-------
TABLE 10 (CONT'D). SUMHARY OF IMPAIRMENT VALUES RANKELi ACCORUINb TO USE.

AUUATIC
AUUATIC
PUBLIC
PKIMAHY
SFCOh nAR Y



STATION LOCATION
LTfE
Lift
WA'1 EH
CON1ACT
CONTACT

LIVt STUCK


COLO WATER
WARN WATER
SUPPLIES
PECHEATION
RECRF AT ION
IRRIGATION
WATLHltK,
stv
37. 112WRD U9328100








SAN RAFAEL H AT SAN R RH CAHPGRUUND NR C
16.77
11.03
4.85
0,0
0,0
1.52
0.(1
34.17

15
12
8
V?
79
15
37
15
J8. 1 KITAH 493141








GREEN R-US50-6 CROSSING
5, 30
3.06
1 ,30
0,0
0.0
0.0
0 , 0
9.6b

29
36
51
99
80
92
38
41
39, 112WHD 09315000








GRFEN RIVER AT GREEN RIVER. UTAH
20.02
10.18
2.36
5,97
0,0
0,49
0.0
39.0?

14
13
24
11
99
34
39
14
40, 21 UTAH 493825








RICO CREEK AT RD, TO CLAY BASIN
1,97
0.0
1,32
0,0
0,0
0.0
0.0
3.29

63
112
49
103
100
95
40
70
41, 112WRD 09328500








SAN RAFAEL KIVEH NEAR GHEEN RIVfc,R, UTAH
25,39
9.37
4.16
1 .92
0,0
1,6b
0.0
42.50

10
14
13
30
101
13
41
13
42, U2WRD 09327550








ftHRON CREEK BEL PARADISE RANCH NR CLAWS
20,21
8,96
3.50
0.0
0,0
1,00
0.0
33.6b

1)
15
18
111
102
29
42
16
43, 112WRD 09318000








HUNTINGTON CREEK rJFAR HUNTINGTON, UTAH
0.34
0.34
0.0
0.34
0.0
0,0
0.0
1.03

82
64
86
44
103
43
43
84
44. 112WRI) 09324200








CTNWO C AB STHAIGHT CANYON NR ORANGEV1LL
6,70
2,88
0.90
1 ,58
0.0
0.0
0.0
12.06

2 2
39
62
33
104
44
44
31
OO 45, 112MKD 09324500








^fcoTTONWUOO CREFK NEAR ORANGEVILLE, UTAH
6,47
2.16
0.0
0,0
0.0
0.0
0.0
8.62

23
45
91
45
105
45
45
bl
46. 112WRD 09308000








WILLOW CHEEK NEAR OURAY, UTAH
54,22
37.76
15,08
22,00
0.0
2.92
0.0
131.98

1
2
2
1
106
5
46
2
47, 21UTAH 493165








PRICE R WOODSIDE USbO-6 CROSSING
7,05
2,05
3.73
0.0
0.0
2.32
0.0
15.1b

20
46
16
41
107
7
47
23
48. 112WHD 09314500








PRICE RIVER AT W00D5IDE, UTAH
41,S2
21 ,70
7.89
11,31
0.0
2.09
0.0
84.51

5
5
4
10
108
8
48
3
49, 112WHD 09314250








PRICE RIVER BELOW MILLER CR. NR WbLLINGT
0.33
0,0
0,0
11.31
0,0
0.37
0.0
0.71

83
74
100
8
109
36
49
86
50, 21UTAH 49J281








AH COAL MINE
2. 30
0,0
0.0
11.31
0.0
0,0
0.0
2. 30
-
57
78
101
9
50
50
50
11
51. 112WRD 09314340








GRASSY TRAIL CREEK AT SUNNYSlUE, UTAH
6,89
3.39
1.73
0.63
0,0
1 .05
0.0
13.68

21
32
39
42
bl
27
bl
27
52, 112WNI) 09310700








HUD CREEK 8L WINTER OUAHTER « SCOFIELU
5,52
2.94
2.24
0.72
0.0
0.0
0.0
11 .42

27
37
28
40
52
52
b?
33
53. 112WHD 09308900








WHITE RIVER AT HQUTH HEAR UUKAY UTAH
27,31
15,42
8.88
3.01
0.13
1,05
0.0
b5.80

9
10
3
18
28
26
51
8
54. 112WRO 09JO6H5O








BITTER CREEK AT MOUIH NEAR BONANZA, IIT
0.23
0.0
16.73
0.0
0.13
9.29
0.82
27 ."8

Mb
89
1
54
29
I
2
19

-------
I ABLE 10 (C0M1TD. SUMMARY OF IMPAIRMENT VALUES RANKED ACCORDING TU USE.


AUUAT1C
AQUAHC
PUBLIC
PRIMARY
J.FCONDAR Y




S1AT1DN LOCATION
LUF
Lite
WATER
CONTACT
CONTACT

Li VESTliCK



COLD WATER
warm watfr
SUPPLIES
RECREATION
PECRFATIOn
IRRIGATION
WATERING
SEV
bb.
112WRD 09j0b40b








HELL 'S
IIULE CAN AT HOUTh NR WATSON UT
1,25
0,0
1.81
0.0
0.13
0.0
0.0
3.06


70
90
36
55
30
bS
b5
72
5h.
21UTAH 493450








DUCHESNE H flB CNrL W/STHAWBERRY R
10,00
2.00
1 . 7u
0.0
0.13
0,0
0,0
1 3.70


18
48
41
i>6
31
56
56
26
57.
112WRD 09302000








DUCHESNE HIV EH NEAR RANDLETT, UTAH
3.77
1.25
1.86
0.89
0.13
0.49
0.0
8,27


41
53
35
38
32
33
57
52
58 .
112WRD ¦ 09288180








STRAWIJFKRY RIVER UK AH DUCHESNE, UTAH
0,27
0.0
0.0
0,89
0,13
0,0
0.0
0.77

-
84
V5
88
J9
33
58
58
91
59.
21UT AH 493742








ASHliEY
CK AT HWY-40 NEAR JENSEN
0,0
0.0
0,0
0,0
0.13
0,0
0.0
0.0


102
99
09
59
34
59
59
101
60.
21 UTAH 493721








ASHLEY
CK AB CNFL W/GREEN R
0.65
0.55
3,75
0.0
0.13
1,05
0.0
o
o
•
sC


78
62
15
60
35
26
60
61
6! .
2 1 UT AH 493825








RED CREEK AT HD. TO CLAY BASIN
1.97
0,0
1,32
0.0
0.13
o.o
0.0
3.29


64
104
SO
61
36
61
bl
71
62.
112 WHO 09229500








HENRYS
FORK NR MANILA, UT
0,0
0,0
0.0
0.0
0,13
0.0
0.0
0,0


112
105
92
62
24
62
62
109
OO 63 •
112 WHD 09184000








OHII.L CH
! NH HOAB UTAH
0,09
0.0
0,0
0.0
0,13
0,0
0.0
0 , 09


88
110
93
63
25
63
63
94
64.
21UTAH 495870








DOLOHES
i R-9 M1LF.S FRdM HOUTH
21,50
26.45
4,68
0.0
0.1 3
3,25
0.0
55.88


12
4
10
64
26
4
64
7
65.
21UTAH 495860








TH

4,13
1,89
6,68
0,0
0,13
3,37
0.0
16,07


37
49
5
65
27
3
65
22
66.
112WRD 09180000








DOLORES
. RIVER NEAH CISCO, UT
5,68
2.89
2,21
2.21
0,0
1,30
0.0
14,30


25
38
29
24
66
16
66
24
67.
21UTAH 491501








JORDAN
RIVEK BELOW AC PUMP PLANT
4.10
5.00
1,72
2.21
0.0
0.0
0.0
10,82


38
23
40
23
67
67
67
34
6H .
21UTAH 491502








JORDAN
RIVER AT BLUt Fl)ALE ROAD
3,50
o.o
1,70
0.0
0.0
0.0
0.0
5.78


44
68
37
68
68
66
68
b 3
69.
112WKD 10167000








JORDAN
RIVER AT NARROWS NEAR LEHI, UTAH
0,72
0,53
1,66
0,53
0.0
1.26
0.0
4.72


77
63
42
43
6<»
19
69
64
70.
112WRD 10167300








JORDAN
RIVER P 5800 SO MURRAY UTAH
2.45
2.60
1.61
5.93
0.65
0.87
0.0
14.12


5b
42
44
12
22
31
10
25
71.
112WRD 10171000








JORDAN
RIVEK p 1700 SOUTH g SALT LAKE CI
2.96
2.63
1,61
12. 3b
3.02
1.36
0.0
23.96


52
41
45
7
1
17
71
20
72.
112WRO 10172550








JORDAN
R. AT bTH NORTH, AT SALT LAKE CIT
3.47
3.84
0.96
14. 32
2.51
1.16
1.17
27,44


45
30
bl
4
2
21
1
18

-------
TABLE 10 (CONT'll). SUMMARY OF IMFAIRMEN! VALUES RANKED ACCORDING 10 USE

AQUATIC
AQUATIC
PUBLIC
STATION LOCATION
LI tK
LIKE
WATER

COLO WATER
WARM WATER
SUPPLlb:
73. 21UTAH 491bH 2



SPRING C BL l,EHl HIM. POND
2.H5
3.52
0.0

b4
31
73
74. 21UTAH 496015



SO WILLOW C AT USFi> BU"HOARY
5.00
5.00
0,0

31
24
74
75. 21 UTAH 496012



TROUT C AT USt>S GUAGING STATION
0.0
0.0
0.0

H9
75
75
76. 21 UTAH 496010



GRANITE C FORU IN CANYON HOUTH
0.0
0.0
0.0

90
76
76
77. 21 UTAH 496061



GROUSE CRbEK AT R() LYNN CROSSING
1.45
0.0
1.03

68
77
60
78. 21 UTAH 496069



DEEP (CURLEW ) CRK W Of SNOWVILLE
5.60
3,12
2,0b

26
35
32
79. ^lUTAH 49lbB6



PROVO R US189 CROSS1NG"KOTARY PK
0.0
0.0
0.0

93
79
79
BO. 21UTAH 491676



PROVO R-0.25M E HAILSTONE JUNCTN
0.0
0.0
0.0

95
80
80
81. 21 UTAH 491bB 4



PROVO H UTAH LAKE BOAT HARBOR
0,0
0.0
0,0

96
81
81
82. 21UTAH 49158 5



SPANISH FK K NR LAKbSHOHE
0,0
0.0
0.0

99
82
82
83. 21 UTAH 49496b



F.VILR RIVbR NEAR WA1CH
0.0
0.0
0,0

101
83
83
84. 21 UTAH 49494b



SEVIFR R 10KM SOWbST ClKCLEVlLLE
4.25
5.00
0.0

J6
25
B 4
85. 112WHD 10191500



SEVIER RIVER BELOW PIUTb U AM NR MARYSVAL
0.0
0.0
0.0

104
85
85
86. 21 UTAH 494258



NNISON
3.12
1 .44
1. 76

49
50
38
87. 21 UTAH 494915



SEVIER RIVEK BELOW PIUTb RES
4.00
5.00
0.0

39
26
B 7
88. 21 UTAH 494895



SEVIER RIVER ABV CONF W/CLEAR CR
3. 10
0.0
1,30

bO
88
52
89. 21 UTAH 4947bO



SbVIER RIVER NR SIGURD AT U-24
5,50
2.80
1.10

2 8
40
58
90. 21 UTAH 494295



SEV1 EH R W OF AXTELL
3,0b
1.10
1.42

51
b5
46
PRIMARY SFCHNOARy
CONTACT	CONTACT	LIVF5T0CK
RECREATION RECREATION IRRIGATION WATEH1NI, SEV
14.12
2.51
o.o
0.0
6. 37
5
1
73
73
56
14,12
2.SI
0.0
0.0
10.00
A
4
74
74
37
0.0
2.51
0.0
0.0
0.0
73
5
75
/ 5
95
0.0
2.51
0,0
0.0
O.n
76
6
16
76
99
0.0
2.SI
o.o
0.0
2 , 40
77
7
77
77
74
0.0
2.51
1 .55
0.0
12.33
78
8
14
78
29
0.0
2,51
0,0
0.0
0.0
79
9
79
79
10?
0.0
2,51
0,0
0.0
0.0
80
10
80
80
104
0.0
0.0
0,0
o.o
0.0
81
81
81
81
1 US
2.15
0.0
0,0
0.0
2.1b
26
82
82
82
79
2.15
0.0
0.0
0,0
0,0
27
83
83
83
110
2.1b
o.n
0.0
0.0
9.25
28
84
84
84
47
0.0
0.0
0.0
0.0
0.0
85
85
85
85
96
0.0
0,0
o.o
0.0
6.12
66
86
86
86
57
0.0
0.0
0,0
o.o
9.00
87
87
87
87
48
0.0
0.0
0.0
0.0
4.40
88
88
88
88
65
0.0
0.0
o.o
0.0
9.40
89
89
89
89
46
4.6b
0,0
0,0
0.0
10.22
n
90
90
90
36

-------
TADLE 10 
-------
TAfcl.E 10 (CONl'D). SUMMARY UF IMPAIRMENT VALUES RANKED ACC0RLHN5 10 USE.



AOIIAT AC
AQUATIC
PIJHMC
PHTMAHY
if CflNOAH Y




hTAHOrt LOCATION
L1KF
Lit F
WATFH
CONTACT
CONTACT

LIVESTOCK




CULl) WATFH
WARM NATCH
SUPPLItS
HKCHEATION
RLCKEATION
IRRIGATION
WATtHINC,
SfcV
109.
112WHD
10136500








ULbbR
RIV AT GATEWAY
UTAH
0.0
0.0
0.11
0.0
1 .06
0,0
0.0
O.u



109
109
69
109
21
109
109
93
110.
11 2WHI)
10141000








WtHER
RIVhH NK fl.AIU
UTY UTAH
2. IB
2.56
0.56
3.64
o.o
o.o
0.0
8.94



bO
43
b6
14
1 10
no
1 10
49
111.
1 12HKD
10134500








t AST
CANYON CHtCK NK
HOKGAN UTAH
0,0
0.0
0.0
3.64
0,0
0.0
0.0
0.0



1 11
111
111
15
111
111
111
111
112.
21UTAH
49^320








OGDEN
R -MOUTH l)F CANyON AT HR
5.00
5.00
0.0
3.64
0.0
0.0
0.0
10.no



J 3
29
112
16
11?
112
11?
J9
113.
112WKL)
10131000








CHALK
CMELK AT COALVII.Lt UTAH
0.0
0.0
0.0
3.64
0.0
0.0
0.0
0.0



113
113
111
17
1 13
113
113
1 13
CO
VO
X

-------
Table 11. Significant Water Quality Trends
Stations and Parameters where Significant Statistical Differences were Observed.
legend: I = Improving Trend; 0 = Degrading Trend; *• = Parameter concentrations are at high levels.
Station
IS
i>
w
J
fl
03
c
V
CI
0
u
w
z
trt
3
u
0
r
c.
£
*
Dissolved Sol ids
Suspended Solids
u
|
1
Sulfate
Chloride
1
!
i
i/i
S 1 
: 1 i

-------
Table 11 (cont'd). Significant Water Quality Trends
Stations and Parameters where Significant Statistical differences were Observed.
Legend: I = Imoroving Trend; 0 = Oegrading Trend; = Parameter concentrations are at high levels.
Station
Bacteria
Nitrogen
:
VI
3
u
|

0

-------
Table 11 (cont'd). Significant Water Quality Trends
Stations and Parameters where Significant Statistical Differences were Observed.
Legend: I = Improving Trend; 0 = Degrading Trend; J' - Parameter concentrations are at high levels.
Station
Bacter la
NiIrogen
Phosphorus
Dissolved Solids
Suspended Solfds
Aiunonia
Sulfate
a
"3
L
0
£
O
|
V
A3
O
Hardness
Metals
SEVIER RIVER BASIN (Cont'd)











Clear Cr abv Sevier R
D






D

D

E Fk Sevier R nr Kingstcn
D










Beaver R at Mamsville


j
1
i

1 |
: i 1

! «3=D
Asay Cr at US 89 Xinq





i i
D : !


Hg^D








i
j










]
i










i
i










! I
!








! :
1








! :
! 1
1
|
I







j i
1
1
1




1




!
j








i
i
1

j


















j i








i 1
i
1 ¦
1 1
				
j


i ' i
! 1 ; ; !
1 '
! !
i l
1 i
i ! 1 ' ' :
i ' i , i
! 111.. :
M ' ; : ! ! !

i
i
I !

|
1 ; ' I

¦
i 1
i :

Ml!

-------
TABLE 12. SUMMARY 11F IMPAIRMENT VALUES RANKED ACCORIUNG TO USE.
MATlilii l.dCA I 1 lilt
aiJIJA'i iC
LIU-
ti l.i> nAlH
AIJIIATIC	PUMLIC
Lll-t	UAUH
WARM nlA'll-K SUPPLIES
MHT.1A.«V	<.l In i>A l> V
tu'jiact (oo
JjREEN_RlVi:H_AI w A HHi. "I hlllm.K, I'tAh DAME
2.	112 M H O	09192600
GHKtH R1VEH NH AK Hit. PlN(-Y, W / 0.	
3.	UiWkl> O92U940O
GREEK H OR LAhARiih hYl)	
4.	U2UIUI	092U700
GRELW R RH, F UNU rit-LI.E HtS WVU
5.	U2WKO	09216300
_GREE'>	R I V tH AT B U. 1 SI. Ajlli, NbAH GHI'EN HI
6.	112WKO	09217 0 00
GKfrEH R. UK t.HI h ii RIVER,	wYO.	
7.	112WRH	09217010
GREEN R1VEK HLLU'J CRVfiJ H1VIK UYO
0.11
1 U9
(1 . t 0
1 l'n "
1.37
47
br>
n. 7 h
7 1
2.n.<
b3
_°«11
103 "
0.10
lob
3.3^
" 30
1.92
o.n
lo«
o.o
8 7
3.70
2 I
0.60
0.11
'til '
o. 1 o
—E
o.i
hb "
J>. 4 3
Ob
1.92
7 1
u. n
7 ft
0.0
~17
0 , 0
~~rr
40
0.76
7 0
1.1 /
0.0
«4~
0.0
0 . o
"13"
o.o
"27
2.4o
__ -3
0.0
«. 112WR0	0920bO00
HEW H)RK H1VEH HI-.AW 010 PItnY. WYOMING
).R0_
" 38
0 . o
VO
v_o
1 1 IWKP
09213500
JUG SANDY CHfEK NEAR FARS1JH. WYOMING
10. 112WRI1 09216000
Bl(, SANDY HIVEP HEl.UW H)HI WYO	
11.	112 WKH	09216050
bIG SANOK H AT GASSON BRIDGE,	NR F.DF.N,
12.	112HK0	O9214500
LITTLE bAUUY <_RL>-K AtMlVE EDI- H .	MYO.	
1 1 H
33. Sn
"7
1.92
5 b
_0 . o
117
2 . 4H_
4h~
b5
JL'll
36
o.o
1
JL31
15
2.71
7b
°'(L
107
0.54
7ff~
0.7 2
71
0.0
94
0.0
io? "
3.bh
3 J
0.7 6
""S3"
0.12
—ur-
?.»3
""Jl"
0.0
b7
0.0
t>3
o .0
"5(T
o.O
h9"
o.o
6 4
O. 14
31
0.34
3T~
9>p_
"124
0.91
13. 112WR0	09216b4b
BlTThK_ CREEN (II-AH HIT'IEK CHEEK, *00
14. 112WR0	09216bb2
BITTER C At) SALT WELLS L HR SALT WELLS W
15.	112WHU	092lbH«O
B1TTI-H CR BbL	LITfLE h!TTEH_ CH NR _K ANDA
16.	112WRI)	0921b5b5
SALT WEI.LS C rJtt S HflXIEK WY	
17. 112WRI)	0921o750
SALT WELLS CMI.EK i.EAH .SAL T nE|,|.{. WY
18. 112WRD	09216H10
KlLLHECKhRLHh Eh A I HlJCK SPRINGS WYU
13.49
IS "
2H.6y
9
20.62
1 1
15. 37
\1 -
b6, 70
~i
H . h
"i2"
6b
5.04
24
22_.°2^
"7
26.13
"6
8.40
"l1*
bo , 6V
3
6.06
2 O
	J7~
e.q-t
...	g_
o.o
B4~"
5.71
IB
7 . R 4
i r
10.10
4
2.24
~4)~
0.0
1 lh "
O . W
—7 9
0	. 0
1	lS
O.b^
02
4.'»b
19
1.40
-- 1?~
/h.ll
S
7.lo
	n —
29
0.34
30
0.0
~TT
o.n
"~7r""
o.o
— h?"
o.o
91"
0.0
"To 7
o. 39
—24—
15.B4
	2 -
1.00
0.0
«3
0. o
55
0. 3-i
" I 12 "
0.2 9
"113"
13.2b
" a "
6,3b
""fir"
7.71
~ flO "
4.^2
i,a -
o. 4h
~ 4*i"
0 . O
-	J_J.
'10 . 9 O
"14
lt.6b
39
—jv~
i.bO
~ "9
4.2b
	g-
0.0
"It"
0.0
1?"
0.49
7
0.60
6
0 . 0
" 15
0 , 0
	IfT
3. 50
7"
0.0
1 H
1 1 . H i
3ft "
3.94
" "73"
JO.7b
1H
6H .24
" If)
249.Ou
7'
J4 . 1 rt
I 6"
73S.73
"1
Ih.Q i
R

-------
TABLE 12 (CONT). SUMMARY UF IHF'AIh'MEN f VALUES RANKED ACCORUING TO USE.

""
- ... . -
a i j ' i«r ic
aoii a tic
I 1)111,1 C
PK MAKY
iihoaiTy
			
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— -

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LUF
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CUI' l ACT
CI '<1 TACT
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COI.LI WA 1 KI«
hARM nATEK
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RETI^ AT IMrl
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t 19.
1 1 2*H0
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9.07
2.77
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0.9 1
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66
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HAHS
FORK HI-AH 1*1 AMtHDVlLLf wy
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1.31
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HAMS
t OK K NEAR GRANGER, W yil .
5.0 /
2.1H
0.0
2.19
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29
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160
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90
74
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25.
1 1 /WHO
09229b00








HtNRYb HlRK NH MANILA, III'
0.0
0.0
0.0
2.19
3.P4
0.0
0.0
0.0



114
121
lift
27
13
gi
25
120"
26.
112HRD
09/59700








LITTLE SHAKE RIVEK Nf AR BALGi>, W
0.87
1.20
0.0
1 .20
3.84
o.o
o.o
1 . 2li



71
54
117
43
14
lim
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... -7H
*£ 27.
1 12WHU
09/35300








VERHILLlUN CHEEK
NEAR HIAWATHA COLO
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17.13
8.94
13.24
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0 . 9 J
0.1b
/ 0.0')



H
8
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15
37
10
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28.
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EAST
FOHK WIND K1VFR NR OUHlUS WYO
4. fi b
1.80
0.0
0.0
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6.6b



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06/l»b00








HIND
RIVKR MEAN DIJMUIS, Mil.
2.0 3
1.30
1.09
0.60
0.0
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5.0/



....... 52
52
56
51
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64
... 20 —
6S
30.
1 1 /WWO
06/2bb00








WIND
RIVER rfFAR CROrtHbAU i1, aYU,
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5.13
0.0
0 . 60
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21
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101
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WIND
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0. 37
0.37
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91
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RIVER AO BUYbMI RE NH i>H(jS||ONl WY
1. 3 i
1.33
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6;
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06259000








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112WRD
06/H4 700








BlbHURN HIVED A'l
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1 r
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LO
n
i n n t
1 -a > >
11- n x
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l •- n t
3 -J x
t "E —
! *• 
-------
TAULE 12 (CONT'D). SUMMARY OF IMPAIRMENT VALUES RANKED ACCORDING TO USE.
Sfft I Ji»,| l.OCA'l luU
AuliArlC	AOUAHl	('II HI. I c
tret	i,ikk	.jai'ih
OM,u «Altr< WAHiJ WATER hUl'HL I "-..s
PH li>1fWl LOi.HAHY
i iutact run l At t
HLOlt ArUln RM'hF /l rlON
X M!: I(,A I' I I"|
bb. 112HkO	Ob,»77boO
GREYMOLL RIVth N t AH HAfcllJ. ftYO.
56. 112HRD	O627H00O
PRY CRhEK A1 ORtYiiULL WYU
0 . lb
104
3B.12
b7. 112WR1)	062790yu
_5M ELL_CN# OHtYBIILL, WYO	
50. 1UKIIU	Ob 2 H 2000
SHIJ6H11NE KIVKR LOU IklJKFALU HILL RI-SLHV
5
0. 30
94
0.09
0.22
95
13.5o
O.H'^
6 3
3, 3b
TTI
n.hj
no
10
_0. 30_
90
0.09
"To?T
0.63
if
1 .54
bO '
0.14
0.?2
n
».6 J
11
O. 3U
"71"
0.09
15.O*
~9
1 ."5
20
1 .05
21
I .05
o. u
...J...
1 .?5
2H
D. 08
I, I v I mi < r
f/l I r.H 1 ¦!'
O.O
"'55'
O.O
t . to
" "91"
t-4.ni
~br
o.o
o.o
~ r>7
0 . 0
UT
0.7b
'bf~
0.0
-gr
0.*3
7T
0 . o
ijT
0.0
~5n~
0 . o
"ST
0.0
n~
2.54
- a 4 —
0.42
"TUT-
59.	112WRP	O62H2900
SHOSHONE RIVfH AH DRY C HH COPY, WY	
60.	112WHD	U62H3H0O
SHOSHONE I) AU WiL.I.WOOl; DAM NH olLLWODD W
10U
0.0
4.10
~JT
0.0
7b
1 .S3
bfl
O.O
na-
o.o
2.6J
31
ft . 5 J
"TJ"
0.0
"nr"
1.92
TTT
o.o
"_rr
. 0 .8 'l
"TTT5
o.o
"V0& —
\. 3q
oO
0 . o
"TTT"
0.0
—btr-
o.o
"117--
10 . 71>
61. 112WHI)	062H4400
SlinSIIUiJt R NR OAKLAND rtyi)
62. 112WHO	U62H5100
SHOSHONE HIVER HK.AK I.UVKliL WYU
Tlh
6.32
Fl
0.1b
"TTT
0.1c
60
0.0
~ .71 -
0.0
77"
0.47
~""B0"~
3.5b
"TT
0.47
~5T"
O.o
fi 5
1 .l'»
"~55—
~TT~
0.0
"109 "
1.5b
22
7. o J
—14"
t.Ob

- - -
51
0.16
—53 —
O.O
~Efl"~
~n—
u. 20
~55-
0.0
56. AO
" - 4 -
0.0
7 a
1.41
-10-
0.0
¦77"
	6R —
b6 . 8 0
	j—
0.0
—7"0"
2.12
"15
0.10
—fir—
~BF~
0.0
" 67
O.o
6B "
0 . 0
" f>9
o. o
¦- 7 O-
0.0
71
0.0
"7?
2. " 0
" "fil"
1 .02
~ 107-
1 Mi. 7 b
- 6
1.M
	97"~
/R.72
19"
16.77
— 30 —

-------
TAM.E 12 (CONT'D). SUMMARY OF IMPAIRMENT VALUES RANKED ACCORDING TO USE.
.s ra'i'11111 i.i)ca j iiih
AOHA I l<	AOIIAl'Ie	PUBLIC
l,»t	LIU"	WA1EH
( UI.U ftAllW VtAHrt r'AIMl MIPI'LI t-S
I'M 1 I.A'<*
run i ai. r
•St Cfli.OAPY
rn' i act
HtCrtf at infj pi t Ki- a I inn
LI v *• :> ri ick
[KH I t,A 1'1 . lil	I > l» I'M M- V
73.	1I2WKI)	O6JIJS0O
PUb"l)t-H H I V t K AT MJi>.shA, *1(11,
74.	112WM)	06JI7000
PUVJDh H H A1 AKVAHA WYU
7b. 112WHP	0 b J 1 3 4 0 0
SALT CKEt K_ h E AH _	X f	W YJl_f	
7b, 112WHO	(>6jlb4o0
CKA/.Y WUHAN C H I-fcK	AT IJPpt H STA, NEAH AHV
h . bv
2b
Jb.67
b
10.3y
19"
JL«j5J
ij 1
77. 112WKI1	063^0200
CLhAH C HL HUCK C »H l»U|- h AIjI> WY
78. 112WKO ObJ20400
CLFARCKftK A 7 UCKIIbS WY	
0. bb
hS
ft.hb
4.54
/b
b 3 . 3 J
4
_h . 0t>
19
0.9 J
b2
o. 4 y
1H
0.40
79. 112WKIJ	0 6 J 2 4 0 0 0
CLEAR CKEtK ULAR A R V ADA WYU
/¥
0.72
Hi
0.4b
SO. 1 I 2Whi) 06323500
PINtY CHfEK A1 oCK'KSS WY"	
7 H
0.7 3
vo
—J 61. 1 12WRD	06324H90
LITTLE PUWDbH	R "K CURHAl.. C "R WESTUN > WY
82. 112 ^ K 0	0632492b
I. POUIHK H Kit	Wt6ini< l
2.34
40
0. r. /
"73
1.0b
1.91
" 4 T~
5.1b
i/
6 . hb
- lb -
3.0b^
i \
1 . 4h
—31 —
l. n 1
"is"
0.64
0. 3b
o9
0. SO
IS
o. n
-7-4—
o. 0
"" 75 ~
0. ?b
tfT
11. *o
~ 3? ~
n. 30
31
o.o
—75"
2.0/
19
l.'i
4.64
b
O.'lo
35
~wT
t . bl
' o 3
1.1/
51
TT
0.21
~T7~
1.74
0. 40
—rr~
1.3/
0.0
0. 3u
" 53"
0.0
—IV—
0.1b
5H
0.0
o.o
7 3
0.0
"74 "
0.0
" 75
0.0
~"7»r
«. 0
77 '
II . 0
4.44
25
b, RH
TT
1 .04
b»
1 ,bi
TT
b.M
1 9
2.31
4 1
JT
0.0
"TUB"
5.03
IB
~W"
0.0
"1
I , *8
8U
1.3/
~2fi—
l."6
~20
7 tr
O . 0
7 9 "
".0
B r~
. 04
jo
101.0/
2 7 . by
21"
7 . II H
— 55—
4.10
7)
2.73
	F7~
0.0
"" B 1
I .4b
l.bl
75 '
3.41
~~77-
7 .Oh
56 "
900
CHFYEHNL KIVH< i-H L'lH.L CttHKH WY
86. 112WIII)	ObJflobOO
CMF.YENMt. HIVbR NH HIVtRVlbW WY
87. 112HHI)	06364700
ANTELOPE r NK 1ECKLA WY
88. 112WHI)	06394000
HEAI/EH CHEEK MEAN NEhCAb I LE, l.'YU.
I . ru,
OK
7.6b
~'2I~
1.14
0. 30
>V3
3.56
89. 112WKI)	06425720
WELLE tOtlHCIIt" H ML KA1"1 L^ SNAKE C IIP PI HE
90. 112WKI)	06425780
DELLK milRCHI: H All UHY C NH P1DEY *Y
96
0. 3S
" 92
1.1^
IT
0.30
- -9 r- -
0.39
~r~
o. \ ti
b b~
0.
3.63
2H "
2.53
19
0.14
1 r"
7.00
~~J7~
14.1b
j-
b.7u
— i 7
67
T7"
B . 6b
— <)-
/ . 4-4
\T
0.16
bTi -
0.39
t?0 -
O. (H
~72-
BIT
n. 0
81~
0.0
TO
1. 4 H
25
2.03
1H
04
0.4o
— 9 -
0.0
	51—
7.14
""
17.77
0.89
39
2.2b
ffff
n.o
— B'i"
0.0
—5 ft '
~n~
2.41
- 11 ~
2.2b
—r7~
nrr
11.0
~n7
0.0
—ps-
	2"H—
lb. Oh
-29-
«. U
4 P
O.o
09
0.0
-- ^10"
11 .« 3
37 "
1 I. Si
	210	
z
CD

-------
I ABLE 12(CON I'ID. SUhMAKY OF IMPAIRMENT VALUES KANKED ACCORUING TO USE.

" _ 		
aui'a ri(
"ADHAIIC"
1 ilhL 1 C
"irtlii/VnV
V.i en,id/,iiy
	 - -
~
-

irrtl I'llJ L«IC«1 III"
LIU-
LI I- E
V, A 1 h
( nil 1 ACT
rii'i) ac i

1, i vi- i lire,



CIII.U WATER
WAR i'l »A H |<
i.HkPLIE.S
Rc.CKEM'1 inn
"r L KM 1 IM||
IK R 1 uA 1 liHJ
\ t\ r r K l HC,
¦SI- V
yi.
1 1 2 M ftp 0b42b4t>0








DONKEY
C NH KOOKCRIU J' '*Y
1 . I
11 . 0
7.09
o.o
111 . 1 3


bb
4H
2b
bt
91
16
til '
41"
92.
112iiKU 06427HbO








HELLE
KHIRCHL H I VhH A1 OEVIL.S TDWEK WYO
0.1b
o.lu
2.Sb
o.lu
O.o
0.31
o.o
1.21


10b
l o4
. _. j7 _
*0
97
b2
' " <,2
hO
93.
112WRD 06 4 2 b9(J 0








CAHALl.n C A1 1-101)1 H UK P1MFY WY
1 H . 7 7
14.13
6.0b
1.91
0.38
1.14
0.0
41 .«H


1.1
9
16
34
2R
— 37"
q-,
1?
94.
112WH0 06426400








DUNK)* Y
C NK WJOhCKUM w<
1 ."<4
1.3b
3.H2
0.9 1
0.0
2.09
'». 0
10.1 1


b 4
49
26
b't
94
17 	

91
9b.
112VIRD ObbibUOO








MURTH
PLATTE KlVhR AHiiVE PATMHUnER RESt
4. t-S
0.99
0.0
I). 1)
0.0
0.0
II . 0
•;. g4


30
60
' ¦ 9 ft
' 9ft
96
96
56
" G7 "
97.
112WRD 06642000








NOHTH
PLAT 1't K A 1 ALMiVA WYO
0.7'j
0.2i)
O.O
0.11
o.o
0.0
o.o
1 .Ob


75
98
	 97
"" "6 9 * "
97
97" "
"" 97
"ion
98.
112 WHO 06b4408S








NOR TH
PLA1IE RIVER A1 MILLS WyC)
3.40
0. 7H
o.o
o.o
O.o
o.o
o.o
4. *H


36
t>9
98
98
9fl
VH
9 K
b«
99.
112VIH0 Obb44bbO








NORTH
PLATTt R AT CAS^LR wYO
3.39
0.63
O.o
O.n
0.0
0,0
(1.0
4.0 1


41
76
99
99
99
gu
99
77
100.
112WHI) 06645000








NORTH
PL ah e Rrvm hi. camper wyo
2.oy
0.69
o.o
1.79
0.4b
0.4b
0.0
S. 4b


bl
73
100
Jft
26
4b
1 Oil
nl
101 .
112WKD Obb46H00








N PLATTE R UK GLEtlRl'CK wYl)
0.5 7
0.94
O.O
0.94
0.45
0.0
o.o
? . 4 n


B3
bl
101
" 40
27
J 01
101
6*
102.
U2WR0 0hbb2000








NIJRIH
PLAT I'L K. AT nRIM, WKU.
2.6b
1.04
0.16
0.5b
0.0
0.0
0.0
S.D2


4 S
59
66
63
107
1 U'2
10V
nb
103.
112WRD 06o52B00








NOKl'H
PLATTE KlVm HKl.ljrf GLEWDO HESERVOl
0.20
0.0
0.0
O.O
0.0
0.0
o.o
0.2 u


101
119
103
101
111}
103
"""lul
"114"
104.
112WKU 06h56000








NORTH
PLAtTE H BL OOE| 06b2b000








ENCAMPMENT H1VEH AT MUUTH, NEAR f.HCAHPM
0.12
0.12
0.0
0.12
0.0
0.0
0 .11
0. lb
_0K	IT'S	TOE	1 CT	111 ~
>.14	0.0	<'.42	0.0	9.7 I
30	107	4R "	107	<47
0.74	0.0	0.1/	0.0	M. hn
55	i r/fi	fi7	ir.n	3R
107. 112WR0	Obfe2flR0O
SAGE CHEEK NEAR SARATOGA, iliU
108. 112WRI)	Ohl>3b000
MEDICINE llUh U AH Si H1 HUE W^^. Nfl HANNA,
10 R	Tu 7	ro fi
2.7H	1.H0	2.5 2
•IH	42	~ J9 ~
4.11	4.27	2.19
34	U	44'-

-------
TABLE 12 (CUNT'D). SUMMARY OF IMPAIRMEN T VALUES RANKED ACCORDING TO UbE .
	 " """ "
AuiUTir
AOIIA 1 IL ""
PI|l>l,lL
PK 1 -lAMY
M-e'niJliAHv
-


f> r»» ruin l.'


CUl.U kAJh'K
WAR'I WAltR
blllTliltS
llfcXhEA 1 ill"
Hh Oh h I'lON
1 W rt 1 < i A 1 1 II' 1
I.AUI-JNI
Sh V
1 109. 112*HI> Obo34600








L M h. 1) IC1 N t. linn 11 ,|ll 'ltniClNL bllrt WYU
2 . 3d
2. fib
1 .67
1 .7 1
o.n
O.o
0.0
7.on

47
33
4 H
4 1
1 U 9
"100
109
49
U0. 112WKI) 0t>fai4490








HAHNA l;KflW t.H HAUilA tv V
6. jy
3.17
3 . So
2.7 /
o.o
0 . 4 (.
0 . 0
lb.7«

i b
" it "
3 1
2""<
1 10
44
' 110
37
111, 112WH0 OhhJydOU








iHEfc.TWA'lFR KlVtH 'lUK M.CuVA, JilO,	
n.?7
y 7
0,27
92
0.0
111
i>. 1 2
dS
o.o
" ill
0.1)
' Ill
0.0
111
0.6b
1 ufi
112. 112WKI) 0664300 0








BATtS C NH Al.CDVA WYU
0.46
0.0
0.0
0.0
0.0
O.O
o.o
o. 4o

89
T I 2
" lii
¦ 111
" ' 11?
112 —
\ 12
10B" - - -
113. 112WKU 06b445o0








CASPFR C AT CAMJM» WYII
4.92
31
0.90
66
o.o
"111
n. n
113
0.0
i n
1.8/
21 "
0 . 0
113
7.6 n
S7
114. 112HH0 06b46600








DEER C Bl. H11.I.AK uAMtWAY. Af l.l.EMRUO,
n. ih
0. 1H
0.7b
o. t u
0.0
0. 14
0.0
1.11

1 0?
99
" 6") ""
--7A
1 14
Ml
- - IR -
94
US. 112WHD OhbbOlOO








I.ARAH1F. H1VLR AT IKU.Ll.L, WY
6 . ho
6 . 6o
0.88
». H f
0.55
0.33
0.0
19.94

24
IB
62
20

50
- -- 1 15"
26 -
116. 112HHD 066b<)500








LARAMlt RIVER AT TWO RlVtRS, WYfl.
2.27
2.2 /
0.74
2.7 !
0.5b
0.0
0 . 0
T.b*
VO
4y
34
/'I
26
'2 4
116
I 16

117. 112HHD »6b7u500








LARAMIF RIVtR NR Kf I.AHAMIK WyO
1 .24
0.64
0. 30
0.0
0.0
0.0
0.0
7. 1 H

64
74
" 79
117 "
117
117
117
-g0 --- -
118. 112WRD 066bl50<>








L1TTLF I.AKAH1C RJVER A1 TW(J RIVERS, WYU
0.13
0.13
0.0
0.13
0.0
O.o
0.0
0. 4u

10b
101
118
b 1
1 in
1 1 H
i m
1 10
119. 112WHD 06454000








NIOBRARA RIVER AT KYll-NhHR. STAT
0.94
1 .50
0.0
n. 0
0.0
0.(1
0.0
2.1 4

70
4b
- -JJ9
" 119
1 19
T19
ii1'
a 1
120. 112MRI) 1OU2010O








BEAR RIVER ABOVE RKSI-RVU1R NEAR WOOllRUFf
0. b 3
0 . 74
0.0
1.H
0.0
O.O
0.0
7. 3d

«7
72
120
47
1 Jll
1 JU
1 20
UK
121, 112WI<1> 10027000








TWIM CREI-K, AT SAC.t WYO
10.1b
5, H b
3.11
?.ny
O.o
o. b4
o.o
2>.">b

20
21
j4
- - 24
121
42
' 121 "
?4
122. 1 12 WRL) 13022500








SHAKt RIVER AU HE6I- kVUIR IJR Al.HlflE W Y
O.O
0 . (1
0.0
0 . 0
0.0
0.0
0.(1
0.0

W2
1 2 ?
122
1 22
123
122
122
1 H
123. 112WRI) 1301b300








CACHE CRKfK NFAR JACKSON, WYO.
0.43
0 . OH
0.0
r.. o»
0.0
».o
o.o
0. 5H

yo
1 U 7
12)
"y?"
123"
123 ~
123"
1 0 7 " "
124. 112 w RD 1 3 02 7 bOO








S Alt T RIVFR Atl RtSfRViJIR fiR tfNA WY
0 .11
0.2 2
0.0
<>. 2 1
o. n
o.o
0.0
0.7 2

yy
y 4
124
16
1 24
124
124
1 i.S
-<
O
IT
M

-------
Table 13. Significant Water Quality Trends
Stations and Parameters where Significant Statistical Olfferenees were Observed.
Legend: I = Imoroving Trend; 0 = degrading Trend; '* = Parameter concentrations are at high levels.
Station
a
Z
o
-
<9
A
i
Nitrogen
VI
3
W
0
a
0
£
Dissolved Solids
Suspended Solids
*
c
8
I
Sulfate
Chloride
Calcium
Hardness
J2
10
I
XlLORAEO RIVER BASIN








!

Green R nr Daniel




D



j

Green R nr La Barge


!

D


! ;
i i
Green R blw Fontenelle


D



D
i
1 !

Green R at Big Island



i

1 '
1 ' i
i : i !
I

Green R ar Green River



i


1
1
1

I
Zn=D
Fe=D
New Fork nr Big Piney



i


i |
| 1
I

Big Sandy Cr nr Faison









Fe=D
Big Sandv Cr blw Eden



i
D*
D

r! i
T !

Bic Sar.dv Cr at Gasson Br


j
i
i
D


1 I
! !

Little Sandy Cr abv Eden



i
!
I
1
1
1
Bitter Cr nr Bitter Cr

D

i*


1 I
1 t
I* 1 !

Ml=I
Fe=0
Hither Cr nr Salt '/veils





i
!



(Pfc=I
(B =1
(Nl=I
Bitter Cr nr Kande


T*


i


I
1 Fe=D*
Salt wells Cr nr S. Baxter



i





1 Nl=I
! Cd=I
Salt Wells Cr nr Salt Wells








1 ! cd=i
Killpecker Cr at Rock Springs
j
1
D*




|
!
(Fe=D*
' (Cd=I
f7n=n
Blacks Fk nr Lyiran
Blacks Fk nr Little America
Muccy Cr nr Karpton
Little Muddy Cr nr Glencoe	
Hams Fk nr Dianor.dville
	

I
i
j
i 1 i ;
•
Fe=D


i : : :
I ! 1 ?e=0

1
i i ! ;
D* D ' 1 i Mi=I

1
: 1 ' ; i
( D* : D* ' D* ' D* D ' n Fp=D
i
D*
1
! 1
i
i ! i i
Fe=D
Hans Fk nr Granger
i
1 i
j D- |
i
!

:ioo : i J
i 1

-------
Table 13 (cont'd). Significant Water Quality Trends
Stations and Parameters where Significant Statistical Differences were Observed,
legend: I = Improving Trend; 0 = Degrading Trend; * = Parameter concentrations are at high levels.
Station
COLORADO RIVER BASIN (Cont'd)
Vermillion Cr nr Hiawatha
MISSOURI RIVER BASIN
Rig Hnrn R at. I nrprnp
Big Horn R at Mnrlanri
B1 a Horn R at Kane
Little Wind R nr Rlverton
Five Mile Cr nr Shoshonl
S Fk Owl Cr nr Archor
Shoshone R nr Cody
Goose Cr blw Sheridan
S Fk Powder R nr Kaycee
Powder R at Arvada
Salt Cr nr Sussex
CI ear Cr nr Buffalo
Clear Cr_al_Ucmss_
Clear Cr nr Arvada __
P1ney Cr at Ucross	
Little Powder_R_nr Weston_
Cheyenne R nr Dull Center
Cheyenne R nr Rlverview
I
I
c
U
0
tSi . 
"3
V
I »
£ >
I
z |
I 1 ^
3 I 
§ I
o
X
D*
_D±_
D*
0*
-_JL
D* ; I*
i 0
I i* !
i	!
N1 = I
Pb-I
!(Pb= I
i Cd«I
Cu=I
J^I
Pb-I
Cd°I
_£e;D
Ni = I
Ni = I
Cd=I
101
WYOMING

-------
Table 13 (cont'd). Significant Water Quality Trends
Stations and Parameters where Significant Statistical Differences were Observed.
Legend: I - Improving Trend} 0 = Degrading Trend; = Parameter concentrations are at high levels.
Station
Bacteria
1
0
u
Phosphorus
Dissolved Sol Ids
Suspended Solids
Annum a
Sulfate
Chloride
Calcium
Hardness
Metals
MISSOURI RIVER BASIN (Cont'd)










aelle Fourche R or Pmey

0

D*

D
D*
D

D
(Cu=I
(Cd=I



i
}




I 1(Pb=I
| | (Nl=I
Belle Fourche R at Devils Tower


D
D






N Platte R nr Sinclair


D


I !



N Platte R at Aloova


D




!


N Platte R nr Glenrock


D



D
i
i
i


N Platte R at Orin


D




i
I


N Platte R blw Glendo


D




i ,
I

Encampment R nr Encampment



I



i
i


Saae Cr nr SaratOGa


n*
1
j

i
¦ i
1 i


Medicine Bow R nr Kanna


D



i 1
{ i


Little Medicine Bow R nr
Medicine Bow



D

1
1
n



Hanna Draw nr Hanna



I*
D

I*



(Cd-I

-------
Table 13 (cont'd). Significant Water Quality Trends
Stations and Parameter* where Significant Statistical Differences were Observed.
Legend: I = Imoroving Trend; 0 = Degrading Trend; = Parameter concentrations are at high levels.
Station
Bacter \ a
Ni trogen
Phosphorus
Dissolved Sol Ids
Suspended Solids
Ammonia
Sulfate
Chloride
I
j
10
<->
Hardness
Metals
OLUMBIA RIVER BASIN











Snake R nr Alpine







I



Cache R nr Jackson



D
D
i



Cd= I
Salt R nr Etna


D


]
1
! 1 !
i
1
}







1 1
1 i
i
j







I





















j i
• 1









| 1
| 1
1
I 1
!








! i !
i ' '









I










i
i
!







i
!










i
i
i
i
i
i








!
!














i
1
i
i



!
I
!
1

i
i


i
|
1 {

		



1 ) j
! , :

;
! ! ! ! ¦
i
i
i
i i 1 I , ,
i i
(
1 t
I I • :
!
1 !
i
I i
i
i
!
1 j
1 ~r r~
!

|
103
¦

-------
1 0^4

-------
APPENDIX
Use Impairment Criteria Matrix
Legend of Symbols and References used in the EPA Water Quality
Criteria Matrix tor Beneficial use Categories
Typical Computer Output of Analytical Results
105

-------
106

-------
VuATfcH (Jll A I, I TV CIM'IbulA tfAI«lX
1 Pu
.11- / I
I M r A I C t«l I
I I 4
J h f C AI CI •!. 1
o
-J
J I K I 'I
ilulb
r-.l ( ' M./ I ntr |.
1 f- K /» I. rt I| I	J I n I »>
Ml- '-H { |\«x / | llll 1|.
»¦ I ( Alj Ci«I, I	J I n 4b
I'1"1 I
r» 11 m ^ -
K,/
/ 141 I 1 -
<1./
H II M '/> ~ 11
IK./
9 IJItlM
10	iJtH+l
ill)/
11	11 f« — I 11
ho/
W I tu*t
il(,/
11 I' PH«»
f U/
11 'I I'll »
\HW
lb H>:> (
*(,/
16 InS (
I (./
1/ IDS (
'H /
in riifn.
i i «
M. *
u"h 1 b

i/i'n i u
li On 1 0
M HIS
imn ¦ ^
00o4»i
l M) ti h b

Acjii/V rir
Llf t-
C"|,(. '-ATeh'
>6*
(2)
I »s- lt>*> ) 0»»'> I b
1 | ft <1 J
»«. )
M> |

0.05*
(8)
0.02
(3)
1 .0*
(8)
0.1'
(1,2)
0.1«
(1,2)
Aui'/vi ir
i. 11- (¦
nAKII I'Ulrl!
>5
(3)
0.5*
(8)
0.02
(3)
1.0*
(8)
0.1*
(1,2)
0.1*
(1,2)
i mil.ir
* A I h
siift'i. v
1.0*
(2)
10.0
(4)
<0.5*
(2)
<0.5*
(2)
500
(5)
500
(5)
500
(5)
PI InMAkV
cull I ACT
H!• Cl" A I Til'i
1000
(2,15)
1000
(2,15)
1000
(2,15)
1000
(2,15)
0.1*
(1,2)
0.1*
(1 ,2)
Ikt.K.t nun
moo
Gcom.
inoan (2)
1000
(2)
1000
(2)
1000
(2)
1200*
(2)
1200*
(?)
1200*
(2)
2500*
(2)
I, T V t M (K t
gA J Y H
10*
(?)
100*
(2)
10000*
(2)
10000*
(2)
10000*
(2)
.(»¦ i.MiVuIu
>6C*
> 5U*
(2)	i
(3)	•
0.5*
(B)
I.ak y
>	f.C* K'A
>	5W* (3)
0.2*
(8)
0.02*
(1,2,7)
0.02*
(i,2,n

-------
v.mTcH on a|j 11 y r^rini ii
i1 o /1,
22	n.
¦M./l,
23	S|H
-'O/l
24	, ini
2b mt\ $ I'M
2ft 11 A r I' I <
f'u/ I.
'? 7 .S A U
00
^ A r I. I
?H *
la,/I.
'2^ AS
IK,/I,
30 I A
"C./l,
31 I'l-
32
i' (j /1,
110/ 1.
33 ( K » HM-V A|
IK./I,
3 4 < U,11 • I
I't /I
3'j (-L, I'M
111,/I.
3t> II , t» I
m./i,
ii 'U b 1
o0m/| o
oi"M
• >'< /2o
0'"# 3 ii
U'lM j t
01'l
c 1 wO i
•; I oO7
0 1 n 1 i
ti 1 '>??
onn2
l> 1 (I } -4
I) I IJ I '»
A f 111A1 iC
I LFL
( "L l> UrtTI U
10*
(2)
30*
(2)
30*
(2)
A'iO*
(6)
21*
(6)
1000
(3)
Aoii/.Tir
I. I H-
uAHl. Hiilf.V
SO*
(2)
90*
(2)
90*
(2)
piiM.ir i pim.AHY
A'iO*
(6)
21*
(6)
1000
(3)
V- A 11- H
slil'i'l.Y
250
(5)
250
(5)
0.2
(4)
n 11")>< I
2.'i
(A)
50
(A)
1000
(4)
.00'.*
(6,11)
50*
(6)
50
('.)
300
(51
rn.i fftLT
KH.Hk.ftl ¦ I It'
StnjHIlAKV
Cljll I A( T
Hh CDKA'l TU»
IHMliM III"
L 1 VF.S ruf K |
*ATh H
<700*
(2)
<160*
(2)
<160*
(2)
<3*
(2)
<15*
(2)
100
(3)
500
(3)
750
(3)
loon*
(2)
20000*
(2)
<2.0*
200*
(2)
5000*
(2)
:>(• i« vii t m

-------
R f J4I A L. I I Y
CHIT I-Hi A h A T H I * (l.ll'i UHWHO
U !IM
3 8 M

I Mi
I'l./L.
4 0 1 I 'W
in r o •' i
41 Th U'
Pi (. ~ hII|,
A 2. ( tl
41 »'K
Hb/l,
4 4 Vm

9 ( t>
vO
1.1 /i.
4o f u # I i' I ¦ V ft I,
iit,/i,
4 / i' I
in,/ L.
4rf A(.
:> ii i»i l i s
50 C A( 11)
I (>/i.
:.m c " i ¦ • i m
1 Mi. lit >
Oil,M t-YI , I II i
llo/l.
ill |IS*>
(>114/
/ 1
0
nnc » J
0 1 i)4 /
<» I OS J

III *)? I
Old))
i • I (j K 'I
u i o n
a u i i t j <
i.ih-
C ni.l1
P60
(6)
3.8 *
(6)
20*
(1)
68*
(1)
a=94
b--1.23
a=1.22
b=-0.^7
ar0.03
b= 1.95
a=1.05
b=-3.73
a=1.C6
b=3.'«
az0.76
b^.02
a-].72
b=-6.52
6.5-9.0
(3)

«' i 11)
mjma'i ir
I.IH-
:AHII HAIrk
260
(6)
3.8 *
(6)
30*
(1)
86*
(1)
a=0 94
b«-1.23
a=1.22
b--0.'(7
a=0.83
b= 1.95
a= 1.05
br -3.73
a=1.00
b=3.40
a=0.76
b=4.02
a=l.72
b^ -6.52
6.5-9-0
(3)
Ptihl. I <
t. ATI- j
MU'PI.Y
50
(5)
10
('.)
2.0
(4)
1000
(5)
50
('.)
5000
(5)
10
('<>
17000*
(6,12)
15.5*
(6,12)
50
('•)
6.5-8.5
(5)
Pi- I > h\< i
rm. i ai. r
l(Kl H I (\ I I 11(4
6.5-8.3
(2)
Se filN|»Ai,V
cuNiac r
HECfH A'I Tllfl
IWH I i.n i t firt
10000*
(2)
20*
(2)
5000*
(2)
10000*
(2)
10000*
(2)
50*
(2)
2000*
(2)
A.5-9.0*
(2)
i,i vi- s turn
wAl t K
50*
(2)
10
(2)
500
(2)
100*
(2)
25000*
(2)
50*
(2)
Hi- ;>!• V Vtl I H I I.AKfc.
I
6.5-9.0
(3)
20*
30*
(8)
6.5-9.0
(3)
I U*
(7)
10*

i

-------
LEGEND OF SYMBOLS AND REFERENCES
USED IN THE EPA WATER QUALITY CRITERIA MATRIX
FOR BENEFICIAL USE CATEGORIES
~Guideline values only
(1)	Federal Water Pollution Control Administration, 1968. Water Quality
Criteria. National Technical Advisory Committee to the Secretary of the
Interior, U.S. Federal Water Pollution Control Administration, Washington,
D.C. 234p.
(2)	National Academy of Sciences, National Academy of Engineering, 1973,
Water Quality Criteria, 1972. EPA Ecol. Res. Ser. EPA-R-3-73-033. U.S.
Environmental Protection Agency, Washington, D.C. 594p.
(3)	U.S. Environmental Protection Agency, 1977. Quality Criteria for
Water, 1976. Office of Water and Hazardous Materials, U.S. Environmental
Protection Agency, Washington, D.C. 256p.
(4)	U.S. Environmental Protection Agency, 1976. National Interim Primary
Drinking Water Regulations. EPA-570/9-76-003. Office of Water Supply, U.S.
Environmental Protection Agency, Washington, D.C. 159p.
(5)	U.S. Environmental Protection Agency, 1979. National Secondary
Drinking Water Regulations. EPA-570/9-76-000. Office of Drinking Water, U.S.
Environmental Protection Agency, Washington, D.C. 37p.
(6)	Federal Register, Volume 45, Number 231, Friday, November 28, 1980.
Water Quality Criteria Documents; availability p. 79318-79379.
(7)	U.S. Environmental Protection Agency, "The Relationship of Phosphorus
and Nitrogen to the Trophic State of Northeast and North-central Lakes and
Reservoirs." National Eutrophication Survey Working Paper, No. 23., 1974
(8)	Tom Willingham
(9)	Un-ionized ammonia (STORET No. 00619) is calculated from an equation
(Willingham, W.T., Ammonia Toxicity, EPA 908/3-76-1, February, 1976) that uses
temperature (00010), NH3 (00610), and pH (00400).
(10)	Maximum values are listed. Where the coefficients, a and b appear,
the maximum criterion value is based on the equation
(a In ^hardness) +b)
e,	STORET parameter 00900 is used for hardness.
(11)	The value shown is based on the incremental increase ot cancer risk
over a lifetime at one person per million. The rate of risk varies directly
with concentration. Recalculated for water exposure only.
110

-------
Recalculated for water exposure only by Region VIII.
No analysis for the presence of this pollutant is made in Region VIII.
Limited data available.
Standard is considered as a 7-day geometric mean (400 MPN/100 ML)
and a 30-day geometric mean (200 MHN/100 ML) for primary recreation
and the standard is considered as a 7-day geometric mean (2000
MFN/100 ML) and a 30-day geometric mean (1000 MPN/100 ML) for
secondary contact recreation.
Ill

-------
Sample Water Quality Summary
(Computer Output)
1 1?wrii
mc. sioux
H A'I
O|,4b2o;o
n'lHIl, C'. I H I-
avl atsimux
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TECHNICAL REPORT DATA
(Please read Instructions on the reverse before completing)
1 REPORT NO 2
EPA - 908/2-81-001
3 RECIPIENT'S ACCESSION NO
4 TITLE ANO SUBTITLE
Water Quality Trends in Region VIII
(1980 Data)
U.S. Environmental Protection Agency
5 REPORT DATE
October 1981
6 PERFORMING ORGANIZATION CODE
7 AUTHORIS)
Thomas A. Entzminger, Richard Sotiros,
W.T. Willingham
8 PERFORMING ORGANIZATION REPORT NO
9 PERFORMING ORGANIZATION NAME ANO ADDRESS
U.S. Environmental Protection Agency
Surveillance And Analysis Division
1860 Lincoln Street
Denver, Colorado 80295
10 PROGRAM ELEMENT NO
11 CONTRACT/GRANT NO
12 SPONSORING AGENCY NAME AND ADDRESS
13 TYPE OF REPORT AND PERIOD COVERED
Final
14 SPONSORING AGENCY CODE
15 SUPPLEMENTARY NOTES
16 ABSTRACT
Ambient water monitoring data collected in calendar year 1980 and
entered into the STORET water quality file are analyzed for the six
states in Region VIII (Colorado, Montana, North Dakota, South Dakota,
Utah, Wyoming). Locations where probable beneficial use impairments
exist are identified and trends in pollutant concentrations are cited.
Probable use impairment and pollutant severity are determined by
comparing observed concentrations to recognized criteria (generally
those included in the state water quality standards) . Nonparametnc
statistical tests which detect significant differences between two
populations are utilized to show pollutant trends.
17 KEY WORDS AND DOCUMENT ANALYSIS
a DESCRIPTORS
b IDENTIFIERS/OPEN ENDED TERMS
c COS ATI Field/Group
Water Quality
Water Quality Index
Colorado STORET
Montana
North Dakota
South Dakota
Utah
Wyoming

18 DISTRIBUTION STATEMENT
Release to public
19 SECURITY CLASS (This Report)
Unclassified
21 NO OF PAGES
114
20 SECURITY CLASS (This page)
Unclassified
22 PRICE
EPA Form 2220-1 (Rev 4-77) previous edition is obsolete

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