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
i i i
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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
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Figure 2. Monitoring Locations Displaying the Highest Values for
Impairment to Public Water Supplies.
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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
-------
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
-------
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
-------
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
-------
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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lOO-LlbJt
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2 8
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291
AL
b 9
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1 1
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6.5
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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
AT 111.1 I. "(_A I llj'i X I r I. 1, M (*
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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..
o L' A I il'ii l.i>( 1 t I u J
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I ABLE 2 (CONT'D). SUMMARY OF IMPAIRMENT VALUES RANNEli ACCORDING TO USE.
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167. 2 iLUI.OOl 00(11 12
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(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
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12. 21SDAK01 4MI640
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grand r at little faclk so
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15, 2I5DAK01 460039
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16. 21SPAK01 4b0935
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17. 112WR0 Oft 360 500
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TABLE 8 (CONT'D). SUMMARY OF IMPAIRMENT VALUES RANKED ACCORDING TO USE.
is T A I 1111, LdC&IICIH
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FALL R 1 V** K iiFftH ruUFMItliCh
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25. 1 12WK|i O64.»9b00
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26, 21 SOAK 01 4MH01
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27. 21SDAK01 4 60100
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30. 2 12> U A K 01 4606b 1
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31. 21 SOAK 01 4 60103
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32. 215UAK 01 460905
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33. 21 SOAK 01 460650
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34, 21SDAK01 4*06b4
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35. 21 l>nAK01 4b0649
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36. 113FURS2 460bOO
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TAHLE 8 (CONT'D). SUMMARY OF IMPAIRMENT VALUES RANKED ACCORDING TO USE.
is r/il 1'Hi LIlKUl'N
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3H, 2151'AKO) 4 60b 4 7
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39. 11 3 (¦ (JRS7 46n56S
PAT'lOLA RKSUWUH AT CI^Vl t-R - SD
44. 21SDAK01 4M1910
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48. 21SDAK01 460925
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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
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TABLE 8 (CONt'D). SUMMARY OF IMPAIRMENT VALUES RANKED ACCORDING TO USE.
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4
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rs mi
ui
• aJ
sO Z
CD 4
• '£
C p-
• lO
c I
»r I
(\ c
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• k£
i h
cn r
• u*.
C IP*-
• >x
c I
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».r>
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it &
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r» «j;
° -"-l
<0 rl
^ jj
o a.
^ X
4
^ X
j:
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cn ^
X
u-j
•
^ Xl
CD 41
"3|
C X
• lx
C
r- ^
• U-1
r t'N
•
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J*> •
rr-
n
fS
2
X
-•
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l!
w ~
*T 1/,
X
X r»
r-
X i
*t z:
- T
^ i/)
XI
x;
^ >•
^ C£
—
4
¦^i
*N
X
*•
G
«- X
<0
o I
O ^
X X
^ j.
x X
4
4 a.
2 4
2 X
Z X
fM *;
•0 J.
tc u
-H S
— >
w
^ -•
¦>< 2
X
X
«w
iC
/.
4
• jJ
• aJ
•
OD £
X
o u
a. 4
» 4
O* 3
"3
">
x
-------
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
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7. 112WRH 09217010
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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
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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
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17. 112WRI) 0921o750
SALT WELLS CMI.EK i.EAH .SAL T nE|,|.{. WY
18. 112WRD 09216H10
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13.49
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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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14.7 /
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0.0
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15
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09/223 00
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1.63
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09/24450
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1 1 /WHO
09229b00
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0.0
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0.0
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114
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25
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26.
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09/59700
LITTLE SHAKE RIVEK Nf AR BALGi>, W
0.87
1.20
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3.84
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71
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VERHILLlUN CHEEK
NEAR HIAWATHA COLO
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2.0 3
1.30
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....... 52
52
56
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WIND
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06/H4 700
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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
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GREYMOLL RIVth N t AH HAfcllJ. ftYO.
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0.09
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0.63
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0.14
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-------
TAM.E 12 (CONT'D). SUMMARY OF IMPAIRMENT VALUES RANKED ACCORDING TO USE.
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O.'lo
35
~wT
t . bl
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1.1/
51
TT
0.21
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1.74
0. 40
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1.3/
0.0
0. 3u
" 53"
0.0
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0.1b
5H
0.0
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0.0
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0.0
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0.0
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«. 0
77 '
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25
b, RH
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b»
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75 '
3.41
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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
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1.1^
IT
0.30
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0.39
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0.
3.63
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7.00
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— i 7
67
T7"
B . 6b
— <)-
/ . 4-4
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0.16
bTi -
0.39
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BIT
n. 0
81~
0.0
TO
1. 4 H
25
2.03
1H
04
0.4o
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0.0
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7.14
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17.77
0.89
39
2.2b
ffff
n.o
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2.41
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11.0
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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
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"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
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li On 1 0
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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)
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(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
-------
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-------
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
-------
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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
------- |