United States Region 8 EPA-908/2-80-001
Environmental Protection 1860 Lincoln Street October, 1980
Agency _J}*nver, Colorado 80295
Surveillance and Analysis Division Data Analysis Branch
Water
Quality Trends in
Region VIII
1979 Data
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EPA - 908/2-80—001 U.S. Environmental Protection gency
WATER QUALITY TRENDS
IN REGION VIII
(1979 DATA)
Data Analysis Branch
Surveillance and Analysis Division
Denver, Colorado
October 1980
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D ISCLAIHER
This report has been reviewed by the 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 public through the flational Technical
Information Service, Springfield, Virginia 22161.
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ABSTRACT
Water quality trends and status for the calendar year 1979 were
determined for the six states in Region VIII. These states include Colorado,
Montana, North Dakota, South Dakota, Utah and Wyoming. Data resident in the
EPA national data bank (STORET) were analyzed.
Statistical tests which detect significant differences between two
populations were utilized to show trends in water quality. The status and
severity of stream pollutants were determined by comparing observed parameter
concentrations to state Water Quality Standards or recognized criteria.
I
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Abstract
Table of Contents
List of Figures
List of Tables
TABLE OF CONTENTS
SECTION I
Page
i
ii
iv
V
Introduction
Summary and Conclusions.
Analytical Procedures.
Water Quality Standards.
3
4
6
1.1
SECTION II
REGIONAL WATER QUALITY SUMMARY
Regional Overview of Water Quality
A Sun nary of Parameter Groups Significantly
Exceeding Criteria
Fecal Coliform Bacteria
Nitrogen
Phosphorus
Total Dissolved Solids (TDS)
Suspended Sediment
Trace Elements
Un-ionized Ammonia
17
17
18
20
22
24
26
28
30
•11
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SECTION III
Page
STATE WATER QUALITY REPORTS 32
Colorado
Montana
North Dakota
South Dakota 85
Utah 98
Wyoming 108
APPENDIX
State Water Quality Standards or Other Criteria Used
in the Stream Quality Analysis 123
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LIST OF FIGURES
Figures Page
1. Stations where Fecal Coliform Bacteria concentrations were at
least 85 percent higher than standards for at least one month
during 1979 19
2. Stations where Nitrogen concentrations were at least 85
percent higher than standards/criteria for at least one month
979 21
3. Stations where Phosphorus concentrations were at least 85
percent higher than criteria for at least one month during
1979 23
4. Stations where Total Dissolved Solids concentrations were at
least 85 percent higher than criteria for one month during
1979 25
5. Stations where Suspended Sediment concentrations were at
least 85 percent higher than standards/criteria for one month
or more during 1979 27
6. Stations where one or more observed Cyanide or Trace Element
concentrations were detected to be at least 85 percent higher
than standards/criteria 29
iv
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LIST OF TABLES
Table Page
COLORADO
1. Ranking of Critical Water Quality Stations by
Pollutant Group 33
2. Table of Stations where Water Quality Concentrations
Exceed Criteria 35
3. Water Quality Trend Table 54
MONTANA
4. Ranking of Critical Water Quality Stations by
Pollutant Group 59
5. Table of Stations where Water Quality Concentrations
Exceed Criteria 61
6. Water Quality Trend Table 74
NORTH DAKOTA
7. Ranking of Critical Water Quality Stations by
Pollutant Group 77
8. Table of Stations where Water Quality Concentrations
Exceed Criteria 79
9. Water Quality Trend Table 83
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LIST OF TABLES (CONTINUED)
Table Page
SOUTH DAKOTA
10. Ranking of Critical Water Quality Stations by
Pollutant Group 85
11. Table of Stations where Water Quality Concentrations
Exceed Criteria 87
12. Water Quality Trend Table. . . . 96
UTAH
13. Ranking of Critical Water Quality Stations by
Pollutant Group 98
14. Table of Stations where Water Quality Concentrations
Exceed Criteria 100
15. Water Quality Trend Table 107
WYOMING
16. Ranking of Critical Water Quality Stations by
Pollutant Group 108
17. Table of Stations where Water Quality Concentrations
Exceed Criteria 110
18. Water Quality Trend Table 120
vi
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SECTION
1
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2
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INTRODUCTION
Water quality monitoring activities have increased substantially in
Region VIII over the past few years both in scope and frequency. These
increases are due to public demand for accurate information about harmful
pollutants in the environment and to the passage of Federal Legislation,
namely, the Clean Water Act, 1979. To fulfill the requirements of these
legislative mandates Federal and State agencies have planned and developed
extensive monitoring networks which have generated a mass of environmental
quality data.
The purpose of this report is to present useful analytical summaries for
Region VIII of the Environmental Protection Agency utilizing environmental
quality data resident in the water data storage and retrieval system
(STORET). Quality status and trends for streams have been determined from
observed measurements over successive time periods.
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SUMMARY AND CONCLUSIONS
Trend analyses (1975—1978 vs. 1979) of all pertinent water quality data
available in the STORET system for Region VIII indicates that 305 of 774
stations processed experienced significant changes (improvement or
degradation) for at least one parameter group. Of those stations which
exhibited significant trends and which were also found to have concentrations
generally considered at critical levels during the period 1975-78, 131 were
found to have improved and 232 were found to have degraded.
The changes in quality that could be mostly attributed to the affects of
man, as indicated by the stations where high fecal coliform bacteria
concentrations are present, were observed at the stations listed below:
Significant Degradation
Arkansas R nr Nepesta, CO
Uncompahagre R at Delta, CO
Arikaree R nr Wray, CO
Left Hand Cr nr Niwot, CO
Boulder Cr at Boulder - Weld County Line, CO
Big Sioux R nr Canton, SD
Big Sioux R nr Hudson, SD
Colorado R at Lees Ferry, AZ
4
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Significant Improvement
Missouri R nr Schmidt, ND
Big Sioux R abv Watertown, SD
N Platte R biw Casper, WY
For the non-point sources of pollution, where total dissolved solids
concentrations have been determined to be at critical levels, degradation
occurred at 34 stations in the region and improvements were noted at 20 stations.
The section of this report entitled Regional Sunniary” discusses in more
detail the findings with regard to specific pollutant groups.
5
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ANALYTICAL PROCEDURES
Water quality data (1975—1979) for 885 active monitoring stations in the
six States of Region VIII were retrieved from STORET (EPA’s computerized water
quality data base) and screened through computerized trending techniques.
Forty-six 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 describe pollution severity, each observed water
quality observation was compared to a state standard or criterion and averaged
on a monthly basis. The ratio of the number of criteria exceedences to the
total number of observations resulted in a probability of exceedence statistic
for each parameter. Ranking of the critical stations could then be
accomplished by selecting the highest statistical values. 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.
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Severity Analysis
Each observed data value was compared to its respective water quality
standard or to some recognized criterion based on water quality use. The
standards or criteria used in the analysis are included in the appendix. Only
the data values that were higher than standards/criteria levels were
reported. The Table of Stations where Water Quality Concentrations Exceed
Criteria contains the symbolic representation of those values that were
categorized between standard and 15 percent over, 15-85 percent above, and
greater than 85 percent above the standards/criteria levels. Also, included
in the tables is the probability of exceedence statistic which is a function
of the frequency of criteria violations.
Trend Analysis
The statistical test (“The Median Test,” Practical Nonparametric
Statistics , W.J. Conover, 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 1 , i=1,2---k, a
test statistic can be constructed to test the hypothesis:
H 0 : all k populations have the same median.
HA: at least two populations have different medians.
The test statistic is computed from the 2xk contingency table:
Sample
1
2
3
. . • k
Total
Median*
Median*
Oil
021
012
022
013
023
. . ° lk
°2k
a
b
Total
n 1
n 2
n 3
. . . nk
N
( n a\2
ab
* Refers to overall median of the combined samples.
8
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The test for the statistic assumes:
The samples are random.
The samples are independent of each other.
The measuremeit 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 1 —
the (1-a) quantile of a chi—square random variable with k—i degrees of
freedom. If I exceeas x reject Ho; otherwise accept H 0 . 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.
The test was applied to each pollutant parameter at every station in the
Region not only for the median but also the 15th, and 85th percentiles. Data
observed during the years 1975 through 1977 comprise one test population and
data from the year 1978 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.
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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 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
Plan s;
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;
o 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 dre 1ge and fill activities;
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o Serve as a basis for evaluating and, where necessary, modifying
best management practices for control of nonpoint sources;
o Contain the State’s antidegradation policy.
State water quality standards consists of three basic elements. These are
designated beneficial use(s), criteria which are numeric and narrative, and an
antidegradation policy.
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 c1assify all surface waters for aquatic life use
and recreation in and on the water, wherever attainable.
Water quality standards contain the States’ policy on aritidegradation.
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;
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o In all cases, water which constitute an outstanding national resource
must be maintained and protected.
Water quality criteria specify concentrations of water constituents
which, if 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
life in water for its existence, or that may consume intentionally or
unintentionally any edible portion of such life.
The water quality criteria used to develop this report derive from
several sources, the principal source being the 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
references include the “Red Book,” “Blue Book,” “Green Book,” Drinking Water
Regulations and the draft criteria document for the 65 NRDC Toxics. It should
be noted that the values extracted from those references 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
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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 have, 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 for public water supplies derive from 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
supplies.
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SECTION II
REGIONAL WATER QUALITY SUMMARY
15
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16
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REGIONAL OVERVIEW OF WATER QUALITY
A Summary of Parameter Groups Significantly Exceeding Criteria
The regional map displays that appear in this section describe the more
significant problem areas identified through computer analysis of each
parameter group for monitoring stations with 1979 data. The observed data
were compared to State water quality standards or recognized criteria and if
the values were greater than standards/criteria then the probability of
exceedence was calculated and reported. The maps illustrate where
concentrations exceeded standards/criteria by more than 85 percent for at
least one month during 1979. These maps were generated from the Table of
Stations where Water Quality Concentrations Exceed Criteria in the section
titled, “State Reports.” It should be recognized that even though problems
may exist in areas where insufficient data were collected, no problem
condition was reported. Since few occurrences of a critical nature were noted
for dissolved oxygen, no maps are presented to describe this group.
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Fecal Coliform Bacteria
The map on the facing sheet illustrates the general locations of the
water quality monitoring stations contained in the Table of Stations where
Water Quality Concentrations Exceeds Criteria .
Below are listed the ten most critical stations in the region for fecal
coliform bacteria concentrations. Values for the States of Montana and Utah
were based on USGS data only.
Exceedence
Probability
1. Whitewood Cr nr Deadwood, SD 1.00
2. Goose Cr nr Sheridan, WY 1.00
3. Bitter Cr nr Kanda, WY 1.00
4. White R nr Kadoka, SD 1.00
5. Cheyenne R nr Plainview, SD 1.00
6. Killpecker Cr nr Rock Springs, WY 0.88
7. Rapid Cr blw Rapid City, SD 0.71
8. Cache La Poudre R nr Greeley, CO 0.70
9. Big Sioux R nr Akron, IA 0.69
10. Hams Fork R nr Diamondville, WY 0.67
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Figure 1.
Stations where Fecal Coliform Bacteria concentrations were at least
85 percent higher than Standards for one month or more during 1979.
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Ni trogen
The Table of Stations where Water Quality Concentrations Exceed Criteria
contains the nitrogen category which is made up predominately of total
nitrogen and some observed concentrations of the Nitrites and Nitrates. It
appears that a larger percentage of the high nitrogen concentrations occurred
in the States of Montana and North Dakota during the months of March and April.
Below are the ten stations that had the highest probability of exceedence
on the basis of four consecutive monthly observations or more:
Exceedence
Probability
1. West Parrot Cr nr Roundup, MT 1.00
2. Red R of the North at Halstad, ND 1.00
3. Fountain Cr biw Colorado Springs, CO 1.00
4. South Platte R nr Kersey, CO 1.00
5. Sheyenne R nr Kindred, ND 0.96
6. Arkansas R nr Avondale, CO 0.93
7. Souris R nr Westhope, ND 0.92
8. South Platte R at Henderson, CO 0.90
9. South Platte R nr Greeley, CO 0.88
10. Powder R at Moorhead, MT 0.75
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Fiqure 2.
Stations where Nitrogen concentrations were at least 85 percent higher
than Standards for one month or more during 1979.
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Phosphorus
The map illustrates the widespread occurrence of phosphorus contributed
to streams from natural sources. The areal extent of phosphorus generally
describes where the sedimentary formations are found in the region. Major
contributions occur during the month of April at the start of the snowmelt and
runoff period. When phosphorus in streams combine with nitrogen it presents a
potential hazard to the trophic status of many reservoirs in the region.
Below are listed the stations with the highest probability of exceedence
and the highest average phosphorus concentrations:
Exceedence Average
Probability Conc/Criteria
1. 1.00 34.0
2. 1.00 28.9
3. 1.00 28.2
4. 1.00 12.3
5. 1.00 12.0+
6. 1.00 8.5
7. 0.95 8.4
8. 1.00 7.7
9. 1.00 7.3
10. 1.00 5.9
South Platte R at 88th Ave., Denver, CO
South Platte R at Henderson, CO
Kilipecker Cr at Rock Springs, WY
Boulder Cr at Boulder-Weld County Line
Big Sioux R - Brandon to Richland, SD
South Platte R nr Kersey, CO
Cache La Poudre R nr Greeley, CO
Big Sioux R at Akron, IA
Rapid Cr nr Farmingdale, SD
South Platte R at 66th Ave., Denver, CO
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-—
• •
• ( A
I • c :.. AK \ ••4
\7 MOUTANA
w it ri -—
,Ir 1!i11!i3 ‘
L .—.< \
w: I
I i.
aoco
w , •
r . r._-______
•.
• fltt
• • •
j U T A H II . ’ ,
• •• • • • - 5 •• CQ
‘ •• COLLORAD’D
•
__ __ _.‘1
Figure 3. Stations where Phosphorus concentrations were at least 85 percent higher
than criteria for one month or nore during 1979.
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Total Dissolved Solids (TDS )
Most of the streams in the region originate in the high mountain areas
where the underlying formations are of igneous origin. Here the
concentrations of TOS can be expected to be less than 50 mg/l but as soon as
the river enters in its descent the sedimentary formations the pickup of salts
increases substantially. The map on the facing page illustrates where
concentrations over 900 mg/l were observed.
The ten most critical stations as determined by high concentrations and
occurrences are listed below:
Exceedence Average
Probability Conc. rrig/l
1. Bitter Cr nr Bonanza, UT 1.00 12576
2. Salt Cr nr Sussex, WY 1.00 4274
3. Otter Cr nr Otter, MT 1.00 5085
4. Bitter Cr nr Salt Wells, WY 1.00 3671
5. Beaver Cr nr Newcastle, WY 1.00 3430
6. Hanging Woman Cr blw Horse Cr, MT 1.00 5055
7. Cucharas R blw Walsenburg, CO 1.00 5212
8. McElmo Cr at CO-UT Line 1.00 2442
9. Redwater R at Circle, MT 0.92 3123
10. Cheyenne R at Edgemont, SD 0.75 3648
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.,‘
ctI.ov,
S S
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.. —.‘ — ‘ -- ‘S
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-
- ----- -.——-:: -- S
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-
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,_-,- - ‘ “—- -- , - rS • ‘ L •
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Figure 4. Stations where Total Dissolved Solids concentrations were at least
85 percent higher than criteria for one month or more during 1979.
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Suspended Sediment
Characteristically, the locations with high concentrations of suspended
sediments are also those locations where high total dissolved solids
concentrations occur. The Table of Stations where Water Quality
Concentrations Exceed Criteria illustrates that high suspended solids occur
during high streamflow conditions and high TDS concentrations generally occur
during the low streamflow conditions.
The stations in the region that exhibit the highest values for suspended
sediments are:
Exceedence Average
Probability Conc. mg/l
1. San Juan R nr Shiprock, NM 1.00 5877
2. Salt Wells Cr nr Salt Wells, WY 1.00 11070
3. San Juan R nr Bluff, UT 0.92 5268
4. Green R at Green River, UT 0.92 5264
5. White R at Oacoma, SD 0.78 7077
6. Powder R at Moorhead, MT 1.00 4057
7. San Juan R at Four Corners 1.00 3049
8. Muddy Cr nr I-1anskville, UT 1.00 6130
9. Muster Cr at Kinsey, MT 1.00 6700
10. Powder R at Sussex, WY 1.00 1547
26
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___ - —-
.1-
AK
4 . 1 H o
M 0 N T A N A • —‘ • . •
‘_•_‘.c.. ,, ., —
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OMEN
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• . S.’
/ a.t
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1-—S___________
Figure 5. Stations where Suspended Sediment concentrations were at least
85 percent higher than criteria for one rronth or more during 1979.
27
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Trace Elements
During 1979, a few trace element concentrations exceeding criteria were
detected in the region. Those stations where the highest values were
determined are as follows:
Animas R nr Silverton, CO (Cu, Zn)
Clear Cr abv Golden, CO (Cu, Zn)
Arkansas R blw Leadville, CO (Zn)
Jordan R at 1700 S, SLC, UT (Hg
Refer to the Table of Stations where Water Quality Concentrations Exceed
Criteria in the section entitled State Reports” for additional stations where
high values were noted.
28
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Figure 6. Stations where one or more observed Cyanide or Trace Element
concentrations were detected to be at least 85 percent higher
than Standards/criteria.
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Un—ionized Ammonia
Water Quality Indicator values for un-ionized ammonia were determined at
each station where the STORET parameters of total ammonia (NH 3 -N),
temperature,and pH were observed for the same water sample. The calculation
procedure is described in William T. Willingham’s 1976 report, “Ammonia
Toxicity.”
The following stations exhibited ammonia concentrations at high levels
for at least two months of the year in 1979:
Fountain Cr biw Colorado Springs, CO
South Platte R at Henderson, CO
Whitewood Cr at Pluma, CO
Dolores R nr Cisco, UT
Jordan R at 1700 So., SLC, UT
30
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31
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STATE WATER QUALITY REPORTS
This section is comprised of three major tables. The table, Ranking of
Critical Water Quality Statins by Pollutant Group is a summary of stations
where parameter concentrations and frequency of occurrences were highest.
The Table of Stations where Water Quality Concentrations Exceed Criteria
lists those stations where water quality parameters, arranged by groups, were
noted to be at three levels above the standards/criteria norm, namely:
standards/criteria to 15 percent above, 15-85 percent above standard/criteria,
and greater than 85 percent above standard/criteria.
The Water Quality Trend Table lists stations where parameter groups
exhibited significant changes over time as determined by 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, 1976, 1977, and 1978 were trerided against data for 1979 in
determining this table.
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coLo’ ’
Table 1. Ranking of Critical Water Quality Stations by Pollutant Group
No. Avg.
Exceed. Mos. Conc.
Fecal Coliform Prob. Exc’d mg/i
1. Cache La Poudre R nr Greeley 0.70 10 16879
2. Arkansas R nr Nepesta 6.45 7 20239
3. St Vram Cr blw Longmont 0.62 8 7355
4. S Platte R at Henderson 0.45 7 10879
5. Boulder Cr at Boulder - Weld
Coui ty Line 0.60 7 6317
6. S Platte R nr Kersey 0.62 9 2523
7. Little Thompson nr Mllliken 0.52 9 1927
8. Clear Cr biw Idaho Springs 0.50 4 2800
9. Left Hand Cr nr Niwot 0.60 3 2268
10. Huerfano R at Hwy 85 0.50 3 1559
Nitrogen
1. Fountain Cr biw Colorado
Springs 1.00 5 0.34
2. Arkansas R nr Avondale 0.93 6 0.27
3. S Platte R nr Kersey 1.00 5 0.14
4. Indian Cr nr Sargents 1.00 2 0.30
5. Cache La Poudre nr Greeley 0.88 5 0.12
6. 5 Platte R at Henderson 0.90 5 0.11
7. Fountain Cr nr Plnon 0.75 3 0.12
8. St Vram Cr biw Longmont 0.63 4 0.10
9. Clear Cr nr Mouth 0.67 4 0.09
10. S Platte R biw Ft Morgan 1.00 2 0.09
Phosphorus
1. S Platte R at Henderson 1.00 12 2.89
2. Fountain Cr biw Colorado
Springs 1.00 11 3.06
3. Boulder Cr at Boulder -
Weld County Line 1.00 12 1:24
4. S Platte R - 60th Avenue
Denver to Julesburg 1.00 12t 0.85
5. St Vram Cr blw Longmont 1.00 10 0.68
6. Big Thompson R nr Mouth 1.00 12 0.49
7. Arkansas R - Nepesta to
La Junta 1.00 8 0.43
8. Williams Fork at Mouth 1.00 3 0.76
9. McElmo Cr nr CO-UT Line 1.00 3 0.75
10. Monument Cr at Pikeview 1.00 2 0.51
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Table 1 (Continued). Ranking of Critical Water Quality Stations
by Pollutant Group
No. Avg.
Exceed. Mos. Conc.
Dissolved Solids Prob. Exc’d mg/l
1. Arkansas R - La Junta to
Coolidge, KS 1.00 10± 3530±
2. Cucharas R biw Walsenburg 1.00 6 5212
3. McElmo Cr nr CO-UT Line 1.00 12 2442
4. Purgatoire R nr Las Animas 1.00 6 3907
5. S Platte R - Kersey to
Julesburg 1.00 12 1850±
6. Yellow Cr nr White River 1.00 10 3660
7. Adobe Cr nr Fruita 1.00 4 2344
8. Bijou Cr nr Ft Morgan 1.00 9 1237
9. Mancos R nr CO-NM Line 1.00 10 1890
10. Piceance Cr at White River 1.00 12 1392
Suspended Sediments
1. San Juan R at Shiprock, NM 1.00 12 5878
2. San Juan R at Four Corners 1.00 10 3049
3. Arkansas R nr Coolidge, KS 0.79 7 2084
4. McElmo Cr nr CO—UT Line 0.83 10 1411
5. White R nr CO-UT Line 0.88 5 1785
6. Little Snake R nr Lily 0.69 10 1126
7. White R abv Rangely 0.75 7 897
Trace Elements
1. Anlmas R nr Silverton 0.58 5 (Cu)
2. Animas R nr Silverton 0.92 7 (Zn)
3. Clear Cr biw Idaho Springs 0.83 5 (Cu)
4. Clear Cr abv Golden 0.94 10 (Cu)
5.Clear Cr abv Golden 0.94 9 (Zn)
6. Arkansas R biw Leadville 1.00 6 (Zn
7. Slate R biw Crested Butte 1.00 5 (Zn
34
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noi,oPp-c PIVFR AT CATEWAY - - — - —— — XX - XX XX — XX c o. o
SAM NICHE!. PIVFR AT M ATIJRTTAJ ço - X 11 0. 18
SM’ MIC IIFT , RTV R AT ITRAVAN. Co. 0 X X 8 0.30
a SAN MfC Jfl, RIVFR RFT.OW urAVAN. C X X 0 X XX X 11 0.64
a ATt CPFFK NFAP MACK. CO. XX XX XX XX 4 1.00
FAST SAlT RFFK M!AR MACK. CO. - - — XX - XX - — - XX 4 l AO
WEST SAlT CPFFK NFAR NeCK. p. V V XX - 1 1.00
ADORE CRWFK NEAR VPIJITA. CO. XX XX X X X 4 1.00
C IINNISON PTVFR NEAR C,RANO ,11lPC71 • X I X 10 0.40
SPPTHC CREEK NEAR MONTROSE, CO. X V 0 0 V 0 0.56
IINCOt’PAHr,RV RIVER AT R DCWAY 0 3 0.70
I’Nrn”pAH( Pr RIVER AT DFLTA - • . 0 X XX XX XX X! XX 13 0.87
I,NrO’IPAHCRF RIVER AT Orl,TA 0 CO. XX XX X X XX XX XX 11 0. R2
SIIPFACF CREEK AT ORCHARD CITY - X - 6 0 ,17
N VI( fiF C.IIMNISON RFLOW H0TCH TSS I X X S n.A0
ROAN Cr)I.FK NEAR OF BFOI’E. CO. X X 0 0 I XX XX X 11 0.82
ROAN CRFFK NFAD OE RF0IIF - 11 XX XX X 4 l AO
PAPACHTTTF CRFFK NEAR CRANDV TJ,E X X P 0 75
PAPACHI’TF CREEK ATCIPAND VAI.TFY. I t V X X XX 7 .7l
FAC.I,F RTVFR AT CYP5 1 1M T X V n 17 o.ce
nC.u,w PTVFR AT P$UM. CO. - V 0 X 0 X 41 0 7R
NORTH FORK RFPT’RTtrAM RIVER NEAR LAIR!) X 4 0.75
ARICKARFE RIVER NFAR WPAY. COLA - X XX XX 3 0.60
SOOTH PlATTE AT HEPJDERRON V X X X X 0 0 X X X X 21 flA t
SOi’TH PlATTE RIVER NEAR Pl ,ATTVTLI.E A X 7 1.00
SOTITH PLATTE NEAR KERSEY XX XX XX X X XX X XX X X X 10 0.89
SOUTH flLATTE RIVWR NEAR WFIDONA. XX XX XX X A I X XX XX X XX 1? 0.92
S.PI,ATTF RFI.OWFT. MORCAN XX - XX XX X - X S l AO
SOUTH PI,ATTE RIVER At RAI,ZAC XX XX XX X - - XX 5 1.00
LEGEND! 0 EXrEFDS CRITERIA BY TESS THAN 1 5% . - - -
X— EXCEEDS CRITERIA BY MOPE THAN 15% A lESS THAN R5
XX— FX EEDS CRITERIA BY MORE THAN P5S
-------
TAVII,F 2 TAM? F fl ’ STATTONS WUERF WATFR Q tAT,TTy CONCENTRATIONS FXCEFI S (‘RTTFRTA.
•IA” F B MAR
XX
XX
XX
XX
XX
XX
XX
IX
X x
X
X X
XX
XX
XX
XX
0 XX
X X!
XX X!
X XX
XX XX
X V
X XX
XX
XX X XX
XX T X
V
V
00070 TII R
NHPTU PLAT ’rF RTVFR NFAP NORTIIGATF. CO.
S PI.ATTF I 60TH AVF Mfl 5flfl
S 0l,ATTF i BATH AV ‘ 1 nsnn MO$
SAN ?) cD • OTIPITN DITCH MDSOO NOl - -
17
V 40
- 0 X XX 50
TX V XX XX XX 4R
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ARKANSAS RTVFR AT POPT7A’4fl. C o.
ARKAPtSAS RTVFR NFAD AVOMOAT,F. CO
RKA”S S RJVFP NFAP MFPFSTA. CO.
AWV#NSAS RTVCR N AD
APVAMSAS AT CATI,TN CANAl. Hfl(T
1TRKAHSAS RTVFP NFAR I A_JuNTA
ARKA’4S S RTV R AT lAS ANTHAS
ARWA’ISAS PTVFR AT T 1 AMAP. COIn
APVA’ SAS RTVFP AT lAS ANTMAS
PTVFP H AR SF(U?Iflfl -
BFI.OW TP1 ITrIAp
P(J”r,ATflVRF RTV ’R NFAR LAS ANTMAS
IIIPFRP ’AMO PTVFP AT T TV’.HWAY R5—R ’7
CIJCIIAITAS pTVrR IIFIOW WALSENRI1RC
F ’OT?NTATN CPFFK NWAP UANT1 II
FOtINTAIN CPFYK N’AD l’flTORAOO SPR
FoI’NrATN CPFWK AT COT,ORAflfl SPRYN
FOIINI ’ATN CPFFK I FT,OW CflL .flRAflfl cp
FUIINI’ATPi CPF.FK N ’AP PTNO’i. CO.
V
V X
XX
X X
XX
XX V
0 XX
V
XX
XX
p 0•75
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21 0 ,67
-- 0 .64
A 0.11
0.44
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6 0.17
A fl.B3
A 0.13
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XX
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SOIITU Pi, TTp HTVWR AT •1IIT,I . . .SRh’RC ,. XY XX
RTTflhI CPFFK ‘FAR FT. MORr,AN. (‘0. XX XX
CACHV TA PflIIORF RTVFP AFTOW FliRT - — -
CACIIF I A pn jnpr PT IFD AT TTMNATH X !X XX
CACH TA POTIORF ?‘FAH Fl ’. COll INS X XX XX
CACIIF T A PflI ?ORF RI’IF.P NFAW CRFFI . XY XX XX
CACHE TA POII! PF ‘FAR C.DEFLF ’Y XX XX XX
RT ( ’ THOMPSON RTVFR AT MOuTh-?. NFAR IA SALI X! XX XI
RI( TIIOMDSON PJFAP MOUTH XX TX XX
T,TT1’?.F TUHUPSON ‘lF P R RTHOhIfl XY XX
lITTlE ThlflUpcn I MF.AR MTI,ITKFN XX XX XX
VPATN RFI,r’W T ,flTJC,MflNT . X V
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CI.FAP CRFFK NI AR MOUTH I V
RT..AW CQFFK Al’ tFFF’FRSfl -flEPJVFR, COUNTY 1.1 n 0 X
TIPRKFY (‘RFFK NFAP MORRISON. CO. XX
A Oy DFC 40,
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XX V XX 14
0
14
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X
XX
V
XX
X
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XX V XX
X V XX
X XX XX
XX I XX
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TAOIF TABtE OF STATTOPIS WHERE WATFR QUAlITY CONCEP’TRATIONS FXCEFDS CRTTFRTA.
•JA ’J FFR MAR APR MAY JIIN IUb AUG SFP OCT 11W OFC ‘O. EXCFFOFNCF
OT IS PROPAOIT ,TTY
FOIINI’ATN E’RPFK AT PIJFIII.0 - - c X x - XX A
!,TTTT,F FOIINTATH CRFE.K NEAR FOIJPJT XX X XX 4 0.75
MOMIIMFPIT CPEFK AT DIKFVTFW. CO. XX XX X XX XX K lfl 0.70
ri,T.nPAOr RTV R NFAP bOTSF fl X X - 23 fl.13
COJ,IIPAOO RTV R AT NLW CASTlE XX X 71 0.17
CflT,( D fl ) RTVFR NFAP CAMFO X 5
( ‘ T,flQAflfl RTVFR HCAD t,(1MA - X XX - xX x x - - x - — 77 0 . Ô
APJ tHAN APOVF NAVAJO P SFPVflTP XX A (1.17
SA ’J .1IJAN RTVFR AT SHTPPOCK, PIN ________ X _______ XX XX XX K fl 0 X l XX I I
i cFi Mii — XX — XX —- XX -
MAPICOS RTVFP AT MANCOS XX
UA tC0S RTVFR 3 MTI,FS NORTH OF STATF ?,TNE XX XX XX (LAO
TA PT,ATA P NORTH OF TA PTATA XX 0.20
INTMAS RTVFR NrAP ROMOAD. COT. XX c
r I,oRTr)A AT ( ‘ONe WTTH ANIMAS _____ XX
InS DTMn PIUFP NEAR I,ARncA XX c 0.20
PTFI)RA RTVFR N W OF ARROT.FS. COT,O XX A 0.17
NAVA.tfl RTVWR WFAP ( ‘HPOMO X c A. O
UHTTF PTVFP RFIOW PICFANCE CPK. XX XX A 0.11
WHT W !7TVFP AT RAN( FTY XX XX 0 A fl . 0
VAMPA pr IFD AT MTI,NFR - — XX - in - n 1o
VANPA PFT,OW l,TTTT F SNAKE RTVFR XX XX
T,11’TT,F SNAKE AROVF t.TI.V - XX 7 0• O
flfl l.HQFS PTVFP AITOVF COPJFI.IJFNCE WTTH SAPI X XX XX _____ A
flfli,I1PFS OTVFQ AT C.ATFWAY - — XY 4 ( L
SAN MTv 1 1F 1, NFAP NORW000 n.n
C.IIMNTSON RTV’R NFAD OFI,TA - - - 0 - -— - 3 A.7Q
C.IIHHTSflPI SOIITHWASTOF r.po .ti, ic r XX XX -
IINC(IUPAHC.RF RT’JFP AT OWT,TA - - XX XX XX XX x 14 0.71
NOPTIV FORK C,IINPJJSOM RTVF’P NFAR BOWTE X 4
N FK OF ( IIP’NTSflN RFLOW HOTCHKTSS x 4 095
ROAN CRFFK NFAP OF RFOIPF XX XX (I X 4 1.00
PflAPTNC FORK Al’ P011TH XX K IA 0.19
CRVSIAI, PTV D AT RFDSTONF XX 4
CRYSTAl. PTVFR “FAR MOUTH - XX 7 0.14
FACIF PT”FP AT C.YPSIIM X XX X _____ I? 0.13
OFAVFP CPFFK AT AVON K p.13
cNAK PIVFP PFTOW KEYSTONF - - X 4
NORTh FflRK RFPIIRT ,tCAPJ RIVER NEAR bAIRD 0 - 4 A 75
ARTCKAUFF RIVFR P1FAR WRAY. CO IM XX .4O
50111’T °t.ATTF AT I1F. ’IDFRSON 0 (I XX 71 0 .j4
SflItTH ‘IATTF RTVFR NFAP P1.ATTVTI,TE 0 3 0.13
coI T PlATTE NFAQ VEPSFY XX XX Y X 20
c .PI.ATTF RFI,OW FT. MOPC.AN 5
5fl11751 0 1,ATTE RTVFR AT RAT.ZAC 1 0 0.40
CACHF TA POIJORF NEAR ( PEFLrY XX X I X 70 0.30
R C THr)MRSflN NFAP MOlITH XX XX XX XX 71 0 43
lITTlE T’4flMP T)” P’FftR HFRTUPUO K A 0.17
lITTlE TIIOMPS0P’ ‘IFAP MT1,TIKF” -— XX - XX XX XX X - — -- 71
ST VPATN KFI,OW I,ONCMOHT - . XX 11
l.FGFNO I O rXCEFDS CRTTFRTA BY T,ESS THAN !5 - -
X— FXCF2FDS CRITERTA BY MORE THAN 15 A T.FSS THAN R5% -
X x — FXCEFDS CRTTFRYA RY MORE THAPI R5
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rAnI,F TARTE’ or STATTOWS WUFRE WATFR QUAlITY CONCE:MTRATIONS FXCF D CRTTFRTA.
vp rpj P! AR MOUTH
R ItOFP CR. AT RI.DP WFI,r) CO I,T iE
CT.FAP R FK MF.AR MOUTH
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SAM MIC.UFI RTV ’R RF1,OW IIRAVAPJ. C
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AWYAMSAS RTVFR HFAR POPTT,A”fl. ( 0
1 )PKAHSAS RTVFR NFAP CflOt, O(F. KA
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SAM IIPAN P AT 0IPR COPMFRS, CO,
P’C ’T.MO CQFFK NFAP rO!,nPAr )n—tPTAH
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WHTTF D• NP. Cr IO. STATE: LTNF. UT.
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VAMPA DTVFQ ME R MAYRE’Tt,. 10.
lITTlE SPIAVE PTVFR NFAQ TIJY. CO
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SAM UTC.IPFV, RTVFP AT PIATIJPITA. Ct - )
rIINNTSON RTVFR N ’AP (RANO •7 1 1MC7T
SPP1MC CPFFK NVAR UOMTPOSF. CO.
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APYAM.SAS RTVFR RFI,OW .IrIHM MA TTN XX XX XX XX XX XX XX 1 flO
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IINCOUPAHGRF PIVFR AT OFt,TA -
TVNCOMPAHCRF RIVER AT DFLTA , Co.
SIIRFACF CR!EK T ORCHARD CITY
‘ !K OF GIINNTSON RC1,OW HOTrHrTSS
ROAN CDFFK NFAR OF OFOTIF. CO.
ROAN COFFK N AD OF RPtttF
PAPA CHI ITF CRFFK AT GRAND vAMFY.
ACI.F RIVFR AT C.YP tI M. CO.
rposc rwrrw R CON, WITH EAf.lF
ULFIF RTVFR AROVe D!LLOM RFS.
NORTH FORK HFPI!RT,ICAN RIVER NEAR LAIRD
ARTCKAPF.! RTVER NEAR WRAY. COt , ’)
SO IITH PI,ATTF. RTVFR NFAD PLATTVILI.E
SOuTH PlATTE NFAP KERSFY -
5 (1 1 1TH DI,ATTF RTV!R NFAR WEI,00NA.
c.”I, TtF RFLOM F’. MORGAN
SOUTH PIATTF RTVFR AT OAI.ZAC
SOUTH I,ATTF RFLOW 5tF91.IPJC
SO IIT II PlATTE RTVP’R AT .IlI .FSRlIR( .
RT,1OII CRFFK NFAR FT. MORGAN. CO.
CACUF V A POIJDRF RIVER REI,OW FORT
rArHv LA POUORF DIVER AT TTMNATH
CACHF IA POhIflR HEAR Ft. COLIflIS
CACHW TA POUORF RIVER NFAR GRFFI.
CArHF IA POIJORF A’F.AR C.PFFLFY
RIG THOMPSON RTVFR At MOUTH. NFAR
RIG THOMPSON NFAR MOUTH
lItTlE THOMPSON HFAR RFRTHOIID
lITTlE THOMPSON ‘IFAR MILI,IKFN
ST ‘dRAIN RrLnW LONCMONT
ST, i’RATN NrAR MflUTH -
ST, VRAIN CPFFK AT MOuTH. NEAR P
I.FFT NAMO CRFFK NFAR NIWOT
I.FFT HANO CRFVK AT MOUTH. AT tON
RFAR CPFFK At .IFFFFRSON—DINVFR COUNTY TI
XX
XX
XX
XX
XX
X
I
XX
X
0
XX XX
XX
XX XX
XX
XX
XX
XX
X
XX XX
-------
¶ARI,F 2 . TAfl!,F OF cTATTONS WhERE WATFR OIIATITY CflHCI2 TPATIflNS FXCF.FOS CRTTFRTA.
)A 1 FF MAP A R MAY JUN JUt AUG S .P O(1 rniv DFC Un EXCFEOF.HCF
fl 5 PPO AR1!.TTY
ARKAMSAS RTVFR UFAD PIFPF.STA 27 0•05
Fr1JPWTATN PFFK NFi,r W rni,npann sp x xx x x xx x Xx a Xx 24 0.63
FOUN’AIW CREWK AT PUFRTO xx 6 0.17
CflT(IPAOII PTVFR NFAD rAM ’O
‘AVA,Ifl RTVFR NFAR CHt DUO XX
WHTTF RT’JFP PFTnW DIC NCF CRK. XX c
flOT,OQFS PIVFQ AT .&T WAY X x X fl.40
I,NrrI”P, H(RF PTUFP AT flFTTA XX 1 . 5 0•07
CRYSTAT, RTVFP AT RFOSTONF
PTfl RANflFATAJ,AMflSA - XX
cohiTu DI.ATTF AT H ’HflFRSflPI Y X xx x xx xx 20
.50 1 1TH PI,ATTE RTVWR NFAP PI.ATTVTIJT E 0.33
c(UITU PlATTE NFAT’ K RS Y xx XX 21 0.14
AfHF TA POIIORF P’EAR FT. Cfll,t,TPJS o 1° 0.05
CACIIF T.A POIIOPF NEAR c.PFFbFY I XX 20 0.15
PTG THOMPSON NFAP MOUTH - X 2t
ST VRATN R ’I OW TMN MONT X XX 13 0.73
RntIj,n P CR. AT RTI)P WElD CO TINE XX 2fl
CI,FAD CRFVK NEAR MflUTII - I X 17 fl•75
00720 evANTlw
ARKANSAS P. REI,(IW TEADV]!,l, ’. CflL
ARKAP t SAS RTVFR NFAD AAlflN CTTT
(71 RKA IS S R7VPR NFAP PiIFB ,O ‘5 0.0
ARKANSAS RTV!P PIWAP WPEST Xx A (1.17
ARKANSAS AT (‘ATI,TN (‘ hNAl, HOGT XI A 0 ,33
ARKANSAS RIVFP NFAP V.A JUNTA A fl. 7
ARKA ’S’IS RTV R AT .AS ANYMAS 6 0.0
ARKANSAS RTVFP AT lAMAR. COla A
RKAMSAS RTvrP AT lAS ANTHAS n•fl
PIJDGATOTPF RTVFR NFAP .5E( UMflfl 6 0.0
P!IPC,ATOIPF RTVFR RFU,OW TPTNTflAD A
DIIp( Tl IpF’ RTVFR N AQ T.A APITMAS A
lhI,VRFANU RTVFR AT NTr.HWAY q5 —87 6 0.0
Si CHAOI.Fs APOVP COUFI ,UENCF WITH N ST H X 6 0.17
FOUNTAIN CRFFK NFAP MAII3TOII Xx A
FOuNTAIN (‘PFFK RFI,OW COlORADO SP A 0, 7
HAT,FNUON (‘PFFK PIWAD UAT .TA. CO. 0 A7
CflI,UQAOO RTVFR N AP HOT SIJT,FIIR SPRTNCS
COTOPAOO RTVFR NFAP OOTSFRO X 0.70
SAN ,HIAN RTVFR HFI,OW PAGOSA -
UAMCOS PTVFR 3 MITF5 NORTH OF S TF T,IPJF
ANIP4AS PTVFP APOVE I)IIRANCO - 1 3 (133
PIFI)PA R!VFR HF OF A’ Rflt.FS. COT.O A fl .
NA’JA.Tfl PIVFR NFAP CHROMO XX XX 4
WIITTF PT’IFR T RAN ET.Y XX 0.70
VAUPA P1 IFP T MTl, lEP 6 0.17
YAMPA PFT,nW !.TTTT.F SHAVE RTVFR 4 0.0
D(IT,OPFS PIVEP AT GATFWAY . - XX . 5
t.FC.FNDT 0— FXCEFD5 CRTTFR!A RY TESS THAN 15% -
X— FXCEFDS CRITFPTA AX MOPE TPA ’ 15 & T .F.5S TItAN P5t
Tx — FXCFFfl5 CRTTFRTA BY MOPE TIIAP’ R5
-------
TA UIF 2. TAR! P OF STATIONS WHERE WATFR O h M ITY CONCENTRATIONS EXCFFDS CRTTFRTA.
x
I
x x
I
I
xx
xx
xx
SE P OCT NOV OFC NO,
n R c
4
Yx I
A
4
1 4
1 4
4
I A
F. V CFED FNCF
PP O PftPII ,TTY
1.00
0.17
0.75
O . c i)
0.75
O.7
0.17
0.17
0• 13
0.40
O • 70
np
0 .70
4 0.75
7 0.50
4 O •75
O.jj
S
3 0p33_
5 n.0
5 0 ,0
‘5 0.70
4 fl.25
4 0 ,75
5 0.70
5 0 .0
‘5
-
A 0.17
A O. l7
A
A
S
S
S
01014 rqponjhhpj
* S n * * * * 1* 5 $ * $5 * *
ARKANSAS RTVFR NFAP NFPFSTA. CO.
cAN T hAN RIVFR At SHIPPOCK. NM
nit4i crt,FNITTN
$ 5* 5* ** $ * 5* ! ** *5*
ARKANSAS RIVFP At t,AMAR. Coin
FOUNTAIN rpFrK At DIIWRT,O
rOI,ITPA O RTVFR NrAD cOMA
UCFI,MO CPFFK NFAP rOf,OPAOO-hhTAhh
4 0.75
l AO
4 0.75
7 0.50
C )
0
h
(3
0
AeR MA Y JON JUt A UG
xx
x
1 A” UTCITFI. NFAP PJ!)DW000
SA” MI CT I W I, RTVFR OFLflW (IPAVAN. C
(tI NISflN RIVFR NFAD flFt.TA
hINrrlMp”Hr.pr PTVFP AT DFLTA
ROAN CRFFK NWAP OF BFO’IF
FAfl.F Q1VF AT RrOCLIFF
flEA V R CRFF’K At &VON
(‘,OPF CPFFK At PICUORN SIIRDTV.
CODE CPFFK At MOOT
runss CREEK AR CON. WITH FApI.P’
PLUF R IVER AROVE DTtJ.Ofl PISp
RT,UF RIVER RYLOW DILLON FS.
TEN MITE CPEEK AT FRTSCO
MICUTCAN RIVER AT WAI.UF’N
Pin CRANDE RTVL’R NFAP CRFEDF
Pin (‘.RANflF At R!,AMOSA
rom.’,TriS PTVE NEAR MAGOTE
SAC.hIACIIF CREEK NEAR SAC IIACHE
.cr)hIThi PlaTtE RTVVR NFAJ) TOWN O ’ SOOTH PL
south , Ph,ATtt A’ hENDERSON -
co ’T’ PlATTE RTVFR NEAR Pi,ATTVTT.LE
cpiit PI,ATTE NEAR v ;.Rsvy
c.Ph,ATTV RELOWET. MORGAN
cflIhTh PlATTE RIVER AT RAt.Z C
SD”T” PlATtE PFI,flW STEPLYNC
22 CArHE V.A PO IIOR E AROVE FT COL lINS
CACHE VA PflIJDRF NEAR C.pFFI,FY
RIG THOMPSflN NEAR LOVElAND
RIG THflMPSON NEAR h4OhlTh4
ST VRATN RET,AW l,ONCMONt
ST. R lN NEAR MOutH
flflhhl,DFP CR. AT Pt DR WElD CO j.INE
(‘fEAR CREEK AT WMEAT RIDGE. COLO
JAN F!R WAR
V
V
V
xx
V
V
V
xx
xx
V
V
V
xx
xx
xx
I
xx
xx
V
x
V
0
x 4 O•75
71q 00 MERChIR Y
YANPA RI VER NEAR P4AYRETL. CO.
x
_xx I
0
x
V
CRITERIA BY TESS A’I 15%
CRITERIA By MOPE TMAPJ 15% £ LESS ThAN 05%
CRITERIA flY MORE TWAN 05%
lEC,FNOh ; rxçrrnS
X EXCEEDS
xx — ‘ XCEEOS
-------
TARIF 2 TaRTE OF STATIONS WHERE WATFR OHATITY CONCEUTRATIONS EXCEFOS CRTTFRTA.
•JA FFB MAP APR NAY JUN TUf AUG SEP O T MO’ DFC P1fl E:XCFFDFPTCF
- _ fiRS PPOPARII,ITY
o1o47 CflPPFR
ARKANSAS R BElOW T,FADVJT.t,F. C2L XX X Y X A 0.67
ARVA”SAS RTVFR Al’ PORTT AND. (‘0. XX 4
RKAMSAS RTVFR NFAR AVONOATF. CO 0 XX 3 0.67
ANKANSAS RTV R NFAP MFPFSTA. CO. XX I 0,33
AR (AP1S*S RTV ’P NFAP HEBESTA 21 0. 14
PIIPC,ATOTPF RTVFR NFAP SEC,(INOI1 A 0.17
l1!IFRFAMO RIVFR AT NICHWAY R5 ’7 A 0.17
FOuNTAIN CPFPK NFAR PINOM. C-fl. 7 0.50
I4AIFNUON CPFFK NFAP MAlTA. CO. 3 013
cAH IIJAN ABOVE NAV Jfl s vn R xx S
SAN 1 1 1AM RTV R AT SHTPROCK. NM XX XX - 4 0. 50
cAN 111AM P AT FOUR CORNFPS. Cr1 X xx 3 0.67
NANCflS RIVFR Al’ MAPICOS - - XX 0.70
TA PIATA PTVFR AT I1T HWAY 1611
I A PT.ATA P NORTH OF V.A PTATA X - S 0 20
ANIMAS RTVFR NFAP ITVF’RTON XX XX XX XX X 17 0.59
InS PTPIOS PIVER NFAR t,? 1 RflCA • XX 4
VANPA RTVF’P MFAR MAYBF ’Tt.. en. X 4 0.75
ITTI’T,F SNAKE: APOVE lIlY - XX 7
TTTTT,F P1AKF RTVFR NFAP lilY. CO XX XX 0 4
WIT SON CRFFK NFAP AXIAl • CO.. XX 0.75
flOT.OPFS RIVER AROVF CONFTUFNCF WTTI4 SAM x - 7 0,14
AM UTC.IIFT, NFAP PIOPW(lflfl XX S
CIINUTSON RTVFR NFAR CR Nfl TIJP’CTT 1 4 0.73
IINCOMPMI(RF RTVFD T RT!)c.WAY - X 0.50
FAST RTVFR Ar COMFY,. WITH TAVtflR 0 5
ST.ATF ’ PTVFP flET OW CPFSTEO IU?TF XX I XX 0.60
FAc,I,F PTVFD AT TflWU OF FOWARIIS 0 0 - 21
OFAVFR CPFFK AT AVON - - XX 0 7 0.79
0 1 , 1 W RTVFP NFAP COHFI.(IFNCE WITh COT,00AOO X S A 70
SNAKF I1TVFR BI T.OW KFYSTOPJE X X X 4 1.00
FPASFR RTVFR NFAP CRANRY 4 fl.25
PlO (‘PAIJOF PTVFR NFAP flFf PJORTF n 3 n• 13
PI (WANPF NFAP t,OflA ’lOS. C ’fl• X 4 0,25
S FflD RIO GQA”D ’ P Al’ TflWN Of’ SOUTH FOR V 0.40
5011111 PlATTE: RTVFR NFAP TOWN OF SOUTH Pf 0 6 0.13
SOUTH PI,ATTE AT IIE:MDFRSOU . X 21 0• 05
CLFAP CNFFK 0E: .OV 104110 SPPIA ,f..5 - X XX XX XX - XX
CI,FAR CRFF’W ROVF C- ,flT.OFN - 0 XX X XX XX XX XX XX XX XX )7 0.04
rIFAP CPFP’K AT WHEAT RI1)CE. Coin - XX 1?
CT.FAR CRFFK NF.AP MOUTH - XX X I 0.17
NORTH FORK CI.FAR CRFFK RFI.OW RI,ACKHAWK XX XX XY 3 1.00
WFST FORK CYFAP CRWFK RFT.OW FMPTRE: 1 1 0.67
01051 lEAD
** ** * **** *
AN II I AN R AT FIllIP CORNERS. CO TX 1 fl. 33
ANTMAS RIVER N AP c1l,VFRl’0N fl 17 0.AR
LFGFNOI O XCEFDS CRITFP!A BY TESS THAN 15!
X- fXCE:FDS CRTTFRTA BY MOPE THAN 15$ fF55 THA” P55
XX— EXCEEDS CRTTFRTA MY MODE THAN P55
-------
TAPI r 2. TAB! F OF cTATIOMS WIIERI WATFR QIIA!.TTY CONCENTRATIONS FXCFFOS rRTrFRTA.
JAM FFB MAR APR NA .Jt N JIfl, A IIC SEe fi!T “ (1 D!C
Mn..
S
EX en’ rwn cr
PPflflAfli !. ITY
fling? tin e
- -
ARKA”SAS R, PE!,I1W !EAflVIIt,F. .jpt. X X XX XX XX XX A
ARKA”SA.S RTVFR AT PORT!,AMD. en XX 4
ARKAnSAS RTVFR NFAR AVONOAT.E. C o X 1
ARKANSAS RTVFP NFAP MF’PPSTA. en. XX 1
ARKAPJSAS RTVFR MF AP MF’DESTA X XX 21
ARKAMSAS RTVFR AT lA MA R. Cfl!9 XX 1 4
PIIPGATflTPF RTVFR NFAR SLGIJNDI - XX A
IJUFRFAMO RTVFP AT HIC IIWAY P5—87 XX A
FOUNTAIN CREFK RFI 1 flW rflI ,flRAflfl SP X 24
FOIIPJTAIPI CRFFK NFAR PIAIOM. en. X 7
rny.npAnn RTVFR NFAP CAMFO I -
SAP’ •IIIAN RTV R AT SIITPROCK. !M XX X - 4
SAM lOAN R AT FOUR CORNERS. ro - — - - - - — — XX - - -
ANTUAS RTVFR N!AR Si!,VFRTO N XX XX XX X XX XX XX 1 9
ANTHAS RTVFR A PPVF D!IRANCO 0 1
WT!,5fl14 CRFFK NFA AXIAl , • Cfl. n
SAP ’ MIC IIF!. RTVFRAT MATIIPTTA. CO fl
r.ppMNT SnN SOIITHFAST OF CR0 JIINCT fl ‘ 1
I!PIrOMPAHCRF RI U I O AT RTDCWAY. (1 3
FAST RTVFR AT flMF’7. WTTP4 TAY lOR X S
SIIATF RTVFR PETI!” CRFStEO PIITTF XX X XX fl XX S
FACLF PIUFR T pFnClTFF - X 4
rAcI.F PTVFQ ñT TT!WM OF FOWART’IS XX X 21
FACIC’ RTVFR AT CYP IIM . . 0 I I
(R(’S rRFFK AR imn. W ItH EAed.E — - - -- —- ——-———-----—-- — — - -—-- — — - - 4
SNAKF RTVFR RFTI1W KEYSTO”E XX X XX X 4
TfM NT I S CPEFK AT FRTSCO - X 5
Pjn CRANAF NFAR wAr.nnwnfnr.Ap — — — X - - - - - 2
Din CR ANOF RTVFP NFAP nE ! NORT ! X . - 0 4
Cl,FAR CR FK AFt fiW IDAH O spp in s . - XX XX XX X XX XX 7
rT,FAR CRFFK ftflflVW CflT.DFN - - - X l - - XX - - X XX X X X - r 17
rl,FAP CArrY NFAR MO uTH X 1 ?
M0D9’II FORK CEFAR CRFFK AFIJOW B!,ACKHAWK _______ XX XX _____
01077 CAOM7IIW
ARKANSAS R RFT.OW !,E.AflVTT,I F. - fl it.
f4RKAPISAS RTVFR NFAQ PIIFRT,O. en.
SAN 111AM A AT FOUR CORNFDS. en
MAVCfl.S RIVFP AT MAMCOS
N0 T FOOK CIINMTSON RTVFP PJFA P S
PJrJRTN FODK CPPN ”iSfl” RiVER WFAR ROWTE
cI,ATF PTVFR PFT,f)W CRFSTFfl RIITTF
r I,FAR CRFFK RET,OW TI)AHO SpR IN GS
4 -
7 0.30
3 0.13
- -
XX 4 0.75
4 0.25
- - ---- - 2 O .3O
3 0•13
PROCFSCTNG CrIMPIJFTF FOR PFOIJFSTFfl PFR inn
C,
0
r
0
a
0
1.00
0.75
0.13
(‘.11
( ‘.19
0 .07
0.1 1
0.17
0.04
O • Sn
0.70
0.50
-— A.I l
n.q2
0.13
0.17
1.00
0 , 14
- -
0.70
I .00
- - 0.25
0.13
0.09
— - (L it
1.00
0.20
- —
0.50
1.00
(LOB
I • 00
XX
XX
XX
X
XX
XX
-------
Table 3. Water Quality Trends
Stations and Parameters where Stgniftcaflt Statistical Differences were Observed.
Legertdz = In roving Trend; Degrading Trend; * = Parameter concentrations are at high levels.
., , I I
Station I I I
Arkansas R biw Leadville
Arkansas R Hr Malta I I I
Arkansas R Hr Canon City 0 Cd
Arkansas R at Portland I
Arkansas R Abv Pueblo I 0 D
Arkansas R Hr Avondale D
-— - —————
Arkansas R Nr Nepesta 0* 0 0 As
Cd
Arkansas R Hr Nepesta Cu
Pb*
—————————— --
Arkansas R Hr La Junta As
Arkansas R biw John 1*
Martin Reservation
— -
Arkansas R at Lamar D C 1 Zn*
Arkansas R Hr Coolidge, KS
I
I
5 e
Purgatoire R Hr Segundo
0 Cd
Purgatolve R biw Trinidad
0
0 Cd
Purgatoire R Hr Las Animas
—
—
0
Mg
Cd
Cucharas R biw Walsenburg
‘Zn
St Charles R abv N St Charles
.,
0
0
0
D
Fountain Cr Hr 1anitou
0 Cd
Fountain Cr at Cob Spgs
I
I
Fountain Cr blw Cob Spgs
Fountain Cr Hr Pinon
0
I C
—
1
Founta1CratP l
.---
.-
L
-
-
-
-
_ -
H-
-i-
54
-------
Table 3 (continued). Water Quality Trends COLORADO
Stations and Parameters where Significant Statistical Differences were Observed.
Legend: I = Improving Trend; O Degrading Trend; * Parameter concentrations are at high levels.
Station
a
—
-
a
u
c
V
0
0
z
a
0
i
0
.
0.
a
o
lI
•0
0
,,
a
>
—
0
a
0
0
‘.,
0
o
C
41
0.
,
a
—
C
a
a
•
U,
a
o
—
i_
o
1
C
u
-_
1
a
a
a
c
..
=
a
.
Z
Monwnent Cr at Pikeview
D
Halfrioon Cr Nr Malta
D
Granby Punp Canal Mr Grand Lake
0
Colorado R at Hot Sulphur Springs
0
Colorado R Mr Dotsero
0
I
I
Zn
Colorado R at New Castle
D
0
1
I
Zn
Colorado R Mr Cameo
I
0
Cd
Colorado R Hr Loma
I
Colorado R blw CO—UT Line
I
I
I
I
I
Mc Elmo Cr blw Cortez
0 Cd
Mancos R at Mancos
0
1*
0 Cd*
Mancos R Mr Cortez
1*
1
La Plata R at Hwy 160
0
Animas R Mr Silverton
-
I
D c
Aniems R Mr Bondad
0 Cd
Florida R abv Animas R
0
Navajo Mr Chromo
D *
Green R at CO—UT Line
D
Cd
White R at Meeker
D
Cd
White R blw Piceance Cr
0
0
Cd
White R at Rangely
T
0
Cd
White R Mr CO .UT Line
.
1-
I
•
L
55
-------
Table 3 (continued). Water Quality Trends
- Stations and Parameters where Significant Statistical Differences were Observed.
Legend: I In roving Trend; = Degrading Trend; * = Parameter concentrations are at high levels.
-
Station
a
—
0
.
c
a
c i
0
l_
.
z
A
a
.c
0.
U)
2
.n
0
a
.
a
>
—
o
U)
.
I
;
0
Q
•0
a
c
a
0.
In
a
—
C
.
a
—
a
1—
&,
a
—
i
0
-i
—
U
U
1
‘
a
.
‘
—
a
X
Yampa R Mr MImer
Yampa R biw Little Snake R
o
0 Cd
0 Cd
Foldel Cr at Mouth
D*
Dolores R abv San Miguel
0*
0*
0*
Dolores R at Gateway
DCd
San Miguel R Mr Norwood
0 Cd
Gurini son R Mr Delta
DCd
Gunnison R Nr Grand Jct
i
i
r
D g
Uncouipahgre R at Ridgway
D
Mg
Uncompahgre R at Delta
0*
0*
1*
I
I
Cu
2
Toinichi Cr at Gunnison
0
DCd
E Taylor R abv Taylor R
D
Taylor R at Almout
0
Roan Cr Mr De Beque
D*
D
Parachute Cr at Parachute
D
Pb
Cd
Roaring Fork at Mouth
D
0
D
Cd
Eagle R at Edwards
I
.
0
Cd
Eagle R at Gypsum
D
0
1
0
Cross Cr abv Eagle R
—
—
0
—
—
I
—
—
Cu
Gore Cr at Vail
U
(
Gore Cr at Bighorn Sub.
U
Blue R abv Dillon Res.
0
0
I
D
Cd
56
-------
Table 3. Water Quality Trend Table
Stations and Parameters where Significant Statistical Differences were Observed.
Legend: I = Improving Trend; O Degrading Trend; * Parameter concentrations are at high levels.
Station
a
—
.
a
C
a
a
0
a
0
.C
a.
a
-°
0
v,
O
a
>
—
0
al
.
0
v
0
a
O a
0
a c
a
a
a
O
—
a
a
a
,
—
Blue R abv Colorado R
D
0
N Platte R Nr Northgate
I
Michigan R at Walden
DCd
Little Grizzly Cr abv Hebron
I
Rio Grande R at Alamosa
I
Zn
Rio Grande R Nr Lobatos
0*
D
S Fork Rio Grande at South Fork
0*
Conejos R Nr Magote
D
N Fork Republican R Nr Laird
D*
D*
D
0 M
Arickaree R Hr Wray
Zn
S Platte R Mr South Platte
I
0 C
S Platte R abv Littleton
I
I
S Platte R at 60th Ave, Denver
1* NO
DJ
) 1*
0*
0
S Platte R at 88th Ave. Denver
0 (Ki
ldahl
D
0
D
S Platte R at Henderson
1*
0
S Platte R Hr Kersey
1*
i
D
S Platte R Hr Weldona
.
1*
1*
i
i
S Platte R at Baizac
0*
S Platte R biw Sterling
Mg
Cache La Poudre Hr Fort Collins
0*
1
I
Zn
Cache La Poudre Hr Greeley
- ““
ii
I
1*
I
P
I
II
I
I
I
I
El__
‘Mg
I
COLORAD3
57
-------
Table 3 (continued). Water Quality Trend Table
Stations and Parameters where Significant Statistical Differences were Observed.
Legend: I_=_Improv inq Trend; D = Degrading Trend ; * Parameter concentrations are at high levels.
-
Station
a
—
I_
e
i
01
0
.
U I
I-
o
.C
2
U,
°
0
v,
0
l
>
—
0
U,
°
0
U#
C
a
C
u
a
o
g
—
3
U I
c
U,
—
Olympus Tunnel at Lake Estes
D
D
D
Big Thompson R at Mouth
I
I
Little Thompson R Mr Berthond
DCd
Little Thompson R Hr Milliken
I
1*
1
i
DCd
Little Thompson R Mr Milliken
i
Horsetooth Res Mr Fort Collins
I
I
St Vram Cr biw Longmont
t Zn
St Vram Cr Mr Mouth
1*
D
Left Hand Cr Mr Niwot
0*
Boulder Cr at Boulder—Weld
County Line
D
Clear Cr abv Golden-
0
*
Clear Cr at Wheatridge
I
0
0 M
Clear Cr at Mouth
DCd
Sand Cr at Burlington Ditch
D
D*
Bear Cr abv Morrison
0 Cd
Bear Cr abv Morrison
1 Zn
Bear Cr at Jefferson—Denver
CountvL lne
—
o*
D
o
o
.
I
- --.
I
I
I
.
I
11
.
I
. .
±
L
I
I
58
-------
M0NT ’
Table 4. Ranking of Critical Water Quality Stations by Pollutant Group
No. Avg.
Exceed. Mos. Conc.
Fecal Coliform Prob. Exc’d mg/i
1. Muster Cr nr Kinsey 1.00 2 13760
2. Yellowstone R at Huntley 0.67 10 1305
3. Custer Cr nr Kinsey 0.40 2 5793
4. Yellowstone R at Billings 0.64 7 390
Nitrogen
1. West Parrot Cr nr Roundup 1.00 12 2.49
2. Muster Cr nr Klnsey 1.00 4 5.15
3. Big Muddy Cr nr Antelope 0.71 5 2.36
4. Glendlve Cr nr Glendive 0.57 4 4.04
5. E Fork Poplar R nr Scobey 0.75 7 1.21
6. Home Cr nr Ashland 0.75 6 1.31
7. E Poplar R at Int’l Bdry 0.57 7 1.19
8. Red water R nr VIda 0.50 6 1.23
Phosphorus
1. Muster Cr nr Kinsey 1.00 1 3.59
2. Powder R nr Locate 1.00 3 1.10
3. Powder R at Moorhead 1.00 2 0.83
4. Milk R at Nashua 1.00 2 0.42
5. Missouri R nr Culbertson 1.00 2 0.34
6. Yellowstone R nr Sidney 0.83 3 0.24
7. Rosebud Cr at Mouth 1.00 2 0.26
8. Rosebud Cr nr Coistrip 1.00 2 0.24
9. Missouri R nr Landusky 0.67 2 0.36
Dissolved Solids
1. Otter Cr nr Otter 1.00 9 5085
2. Hanging Woman Cr biw
Horse Cr 1.00 9 4061
3. Redwater R at Circle 0.92 10 3123
4. O’Fallon Cr nr Ismay 1.00 10 2501
5. Home Cr nr Ashland 1.00 9 2676
59
-------
Table 4 (Continued). Ranking of Critical Water Quality Stations
by Pollutant Group
No. Avg.
Exceed. Mos. Conc.
Dissolved Solids Prob. Exc’d mg/i
6 Otter Cr biw Fifteenmile Cr 1.00 9 2526
7. Fattig Cr nr Delpia 1.00 12 1774
8. Redwater R nr Vida 0.92 10 2142
9. Powder R at Moorhead 1.00 11 1637
10. Beaver Cr at Wibaux 1.00 9 1658
Suspended Sediments
1. Powder R at Moorhead 1.00 8 4057
2. Muster Cr nr Kinsey 1.00 4 6700
3. Powder R nr Locate 1.00 7 2337
4. Custer Cr nr Kinsey 0.75 3 5197
5. Glendive Cr nr Glendive 0.86 6 2080
6. Muddy Cr at Vaughn 1.00 2 2790
7. Muddy Cr nr Vaughn 1.00 1 4130
8. Mizpah Cr nr Mizpah 0.71 5 784
9. Musseisheli R nr Roundup 0.71 8 670
10. Yellowstone R nr Sidney 0.86 5 356
60
-------
TAPLY 5. TART V OF CTATTI1MS WIIFRF WATFU ( aII M jty cn rEMTPAtTflNS EXCE FflS CRTTFRTA.
- - IA’1 ‘F 4 - 1 14P - ADk MAV :j I I}1 m1!Ir - UIG Si P er -v PIfl Y nr c M u pverv,’rnrr
fl c pPj 1 P4flJT.ITY
OA IAO - - - - - -
*Ittflt t*tSt$ttt*
PflWOFR RTVCR AT MOORI IFA O. LIT I I X
PI1WOFR RIVFR MFA T,flrhtF. ‘T. X - - X - -
MI?PAH CRFFK AT flITVF. Mt.
MI7PAII CPFFK MFAP MIIP,’tH. PIT. _____
OTTAP CRFEK RI.Aow FIFTFEPJMTLF rprEK M R I )
H(1ME CPFFK NFAP ASMLAMI’ MT 0
PRAIPTF flO( CRFFK ‘lEAP BTRMFY IT
HA’JGTM( WOMAP’ CRFFK MFFtR j3TRMfv, -
POPLAR RTVFR AT INTERMATTOTIAT P U-
POPIJAR RTVFR MFAP SCORFY
WFST FPRY Pfl LftR RTVFR NFAP Pp m —
EAST PflPT ,AR PTVFR At TMTEQNATTO XY X
FAST FORK POPLAR RTVER NFAP ccna
POCK CPFFK RFLOW HflRSF CPEFk. ‘ JE X X
3 1 6Th rpr rol l
MISSOI IPI RTVFR At VIPGFLT,E. MT. xx I?
Uj55O IJP RTVFR NFAP TAPIO IISKY. ‘PT xx Q
YFI.LflWSTflNF PIv EP At TAUPE? MT - - - XX — - - - — - - — - -
O’ YE?LOwcTOMF RIVFR AT RTIt,IPIGS MT X V 0 XX V Yx V I ) 11
YETLPWSTONF PIVEP AT HIIUtLFY. MT X X 0 X X X X XX XX XX XX PP
yE, ,Lñw TñNw iivpP “EAR ?ItLFS i ttv. Mt. - - - - - -
POWDFR RTVFR M AP TOCATF. MT . XX XX XX I I
TOP’C,IIE RTVFR At STATF TIME MR OECKFR MON xx xx xx 1 1
PILISTFP CREFK NFAR KINSFY jT - - — - - — X X — X V - - - — - 4
CIJSTFR CPFFK MFAP KIMSFY PIT XX XX c
fl’FA?,i,OM CP FK PYFAP TSMAY. MT. XX 0 I I
CLFAP CUFEK NEAR HOYt MT - — - - - — - —---— ---- -- ——-- --- - —-— —-—
IIPPFP SFVFMMTI F CRFEK MEAM LTNOSAY Mt x
flEFR CPEFK NFAP ( .LFMflIVF Mt x x c
EASt POPlAR PT IF? At TMTEPNATTO — - V K I t ’ -
porx CPFFK RFLOW HoRcF qu’rK. M XX I i II
MII,K RTVFR At NASHUA . MT. X X 1 7
CRflW ROCK A ’EK PIEAR COI1AG ’M Mt - - - — — - - — — d i
PIJYFTDFR CPEFK MFAP POCKY ROY T X 1
M SsrJ.cHr,j, PIVEP AT MO5PY Mt. - - - - -- X — - - - - -
315 01 tot ro i l
* 5 4*5*5 * 5 * 4*4 5* * 4
YFII.OWSTOMW PIVEP AT UlINtIFY. MT XX 0 X “X X V X l
YET LOWSTOMF PIVEP MEItP MILFS CITY. Mt. XX 1 4 0 A7
00600 totA l LI -
5* ** * *4* 5* 5* 5* * 4*
MISSOURI RIVFR At V1Pr.FI,U. P IT. 1 1
M ISSOIJPI RYVFR NFAP TALIUIISKY. “T 1 n4 4
XX
0
-_v__ -
I ,
— —Il
A
P
_ _ _ - A
11 0
0 X X A
---- ——---—-—---—---—-
XX 0
—-—————--—--———--—---------——----—— I I-
1 1
X 11
I I
0
I I
o •
n.j
A.”
97
0. 7
0 1 t
A 09
A.’’
s 09
fl I5
A A4
0 • (‘ P
A. 11
0.19
A A4
A •A7
cAA
:c
I’. 0
n. m
0
O 10
A ‘a
A. IR
-
“.75
A •flfl
X
XX X 0 X
lFr.FNR: 0— FXCI FflS CRTTFRTA BY TI 55 THA” I 5
X_ F (’f FOS CRTTFRTA r Y “(IRE 111AM I5 & t FSS VIA” ‘ ‘
TX— rXrVF I”S cwii FRIA p” ‘. 1 1 P T IJA” P5
-------
TAPI,F 5 • TAP.),F flF cTATTONS W WPE WAT R O1’A!,ITY CflNCE’!TPAT1O JS FXCA I) cpTr RIA.
xx
xx X X
xx
xx o
XX XX
0
Y
XX
xx
Xx
xx
- X v
xx
XX
X X
l,F,;ANfl 0—
Xx—
0 X
x
x x
Fxcl.rr)S CWTTFWT NV TESS
FXr’VFOS CRTT RT A nY ‘ 1IiPE
‘xCI FDc (‘ ITr.4TA I)V “OPF
‘AM FFB MAP ‘iAY ,lITid •iut, A ’( S P rp’
“TSSOIIPT RTVFR RFIOW FORT PFCK 0
MISSOuRI RTV R NFAR CIJl,l ’RT 5flN. - - — - X -
VE!,IMW TflNF Rl ?ED A’EAR I.TVTNCSTO
V I flWST0N PP’F.R AT t,AUPFI. MT 0
YEt,i.flWcTflN P)VFP AT OII!(N( S MT
VELI,OWSTONF RIVF.P AT HIINTL Y • MT
YL!,I,OW5TONF PI”ER “FAR MII, S CITY. MT 0
VFP.l,0W 9’flNF RIUFP NEAR TFR ’ Y. “T 0 0 X
VE!I,rIWSTOIIF RIVEn NEAR STDPJFV. MT. x
RhJPN CRFF ‘IFAR SAVAC.F. MT.
P(IWDFR RTVFR AT MOOPIMF Al). MI - -- - ——
Pfiwnrp RIVFR tJ AP lOCATE. MT. XY
M 1ZPAH CP .FK AT OLTVF. MT.
UI?PI H CPEFK N AQ ‘117PM). UT.
Tr1A ’Gu’F PTV R AT TATF IU’F NP OECKER MON XX X
TOMC,IIE RIVER A’ TIYIGIIF R DAM. NE
TflP’GPIE RIVER BY I4A”CTNC WOMAN C.
TO JG PE P BY ORANO IBER RRIr,(:F., xx
TONGuE RIVER AT MITES CITY. UT. Xx
PIIMP T ’ CPEEY “EAR l,OF 5CR. MT.
PuMPKIN CREEK NEAR MTI. S CITY ‘ T x
OTTER CREEK NEAR OTTER MT
(1TTF P CREEK ET,uW A’lET ’F MTI,F CREEK PiP pj X X
‘ ‘T FP (‘PEEK AT ASHT,AP ’O. MT. x XX
HOME CPF K NEAR ASMI,ANP MT X x X
COW CREEK “FAR C01$TPTD MT
MYISTER CREEK PJFAP KP’S Y MT XX XX X l
CUSTER CPF K NEAR KINSEY MT xx
O’FAT,Y,rIN CREEK NFAP TS ’ 1AV. MT.
IIpP P SF”F’1MTL .E CREEK NEAR T,TNOSAY MT I
C.T,FNflj lF CREEK NEAR ( t,ENflh”E MT X xx
OFFR CREEK NEAR Gi,FNOTVV MT - -- - XX -
COTTONWOOD CPFEK NEAR INTAKE MT X 0
OCAVFR CPE K AT N1RA lX MT xx xx
RANGING Wfl ’ 1AM CREEK R I HORSE CPEFK NP I x o n
P))SFRUT) CREEK AT KIRBY MT xx
POSIPIJO CREFY “ERR C I,STPIP. MT. 0 X
P()SF IJfl CREE.K AT I4OIJTH• P’EAR ROS X i X
x
r ’ c i ’ Y( ‘Er’L “(r
005 poi,”AOIT ITY
O XX X II
-- - - -.
xx
- - - __x j )
fl
- - II
X 21 0.19
c i n.ii
- 0 XX j7 015
xx X 11 0 55
P
I I I
P fl 13
xx n 0
0
x (I fl. IR
X I A
I X
x ‘i n.h
r) 0
P
x X
x 1 7
x l 4 1.00
X l 4 0 .50
0 0 12
4
x v 0 n•57
0) ))
A
xx x
O 0.13
n l4
C i (I• 14
0 n 13
xx
o
-- - ( I
X r i nq
2 ).flo
x xv xx ‘
11 n Ih
C i
- i n•77
17
(7 0.17
o v x nd
I S
r lA ’ 1 ‘ ,.F S TI4A” Q5•
I ll ’ Q5
FAST FORK ARMF.Y,1,S CREEK NEAR
ARU ’I,LS CREF K NEAR FORSYTH. MT.
SAPPY CREEK ‘IFAR HYSHA! . M .,
OIGHORtI RIVER AT RTGIIO )1. MT.
RIG SAP’fl CT AT WV—MONT STATE lINE
PIG MUOOY CREEK N AR AMTVI flPF M1
POPlAR RIVER AT TNTEQHATII)c?AI, RU
POPI AR RIVER WEAR SCOHEY
POPI.AR RIVER APOVE WEST FORK NFA
POPI.AR RIVER READ DflPJAR. “T.
WEST FORK POPLAR RIVER I!FAP BRED
EAST POPlAR RIVER AT TNTEPNATTO
I
xx
xx
x
X
X
IX
x
-------
PARL,F 5 TART E flF STATIO ’S wtl P WATFR QuA? ITY CnHcENTPAI’IflhJc VXCIFDS CRITFRTA.
SIAM FFR UAP A l3.’ 1 fJI,ii iii
EAST FflRV 1 flPI,AR RTVVR NFAP SCflB -- xn - -
4FF’VFI ? CPFF’K Al’ TP1TI NATIflNA!. RflI NT)APY )(X -
PEflWAT ’P RTVVR AT CIRCTF. “Ti. X X
P flWATFP RTVFK NVAP VTflA. UT X X XX XXX - --
PRAIQIW FT,X (‘RFEX WAR OSWFC,ru UT XX
MT ?.K KTVFP AT NASIItIA • UT. Y X X XX
rpnw RPCX CRFFK PIFAR CnI4AGVN MT X X
Eñi 9 A OPMAN7 MT. - XX - x x
TIURFR CRFF)( NFAP VA I !nPMAN. UT fl X
HAT.F RRFFD CRFFK N ’AP KLFIPJ UT Y X XX
FAST PAPRflT (‘ FEW “EftR PfltJUOIIp T - X
EST PAWPflT fRFEP PJ AR RPUUDIIP N XX TX XX XX XX
FATTT(; CRFFK NFAQ flFT.PTA MT n
MUSSFT,SHF?,II P1’lF R NEAR RPLJUDttP, P X
‘uuIcSFu,SHFT,t, RTVFP AT Mr ISRY. MT. X 0 X
MARIAS RTVFR tJFAR CH ’STER. MT. - 0 - - - -
CLARK FORK BVLPW MIScOIILA. MT.
FLATHEAI) PTVFR AT COTIPIBTA AITS
I’ XC ‘ I ‘( ‘ ‘
j) r P , fl tIT y
r
r j
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fI• co
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A
A 47
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A. AR
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4
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XX XX
S
X X I’)
p q
X X XX XX XX
X Ti
0A6A5 PHflS—TPT
UTflhJIIf RTVVP AT Vt°( LIE . UT.
IIISSPIIPT RTVT’R NFAP TA”DIISKY. MT
“TSSPUPT RTVFR NFAR CII I I;FRTSITN.
YFT,IrnwcTflrlV RTV A AT lAIIPET Ml - -
YE!LflWSTPNF PIVFP AT RTtJ,TPIC, UT
YFTLPWcTPNV PITIED AT H’INTIry •
YETIflWSTANF PI”EP AT FoRSYTh. T
YFlt,PWSTPNF RIVFR PI AP MIIFS CITY. MT.
VETtPwSTANV RIVER NEAR STD’IFY. MT.
t un s CPFAK •IP.AR SAVA(F. WT.
I,F ’C,VIJPT (1— Vxr’pl )S CRTTFI4TA MV I u..cs
x— VXCFFDS CRT1FPFTA v MOPE
TX — ‘XfFFI’S CR1 rT’RTA UT P’(1AF’
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P
0
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AIIC, P ‘iCT M()V pr( ‘III.
Iluic
X X X I ,
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1
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XX XX I
X X P
XX XX XX
X X I,
‘a
XX 11
17
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X
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0fl610 Ptfl7 ;fli
VFI,LPWSTOINF PTVE PJ AR LTVTN STO A.??
MT7P HCRFFK NFAR UI7PAH. ‘r. -- - X -- A
ToUc ItE RTVFR AT STATF TIPIE NP flECKFR MPN Y I I
TOPIGtIF RIVFR B ?. UANGTNC WOMAN C. - - - - - XX -- -— 0 nfl
PIOUF CPPFK tJFAP asIlI,JTNA MT -— - - •
UIJSTFR CPFVK PPVAR KI’JSFY MT XX XX •
(‘IJSTVR CPFFK NWAP KPISFY MT - X -
( ,FNflTVF CP FK NF’AP CI,FNflIVF’ MT - - — 0 1. 11
PFAVFR CREFK Al’ WIPAIPX Ml ’ X
PTf SA ’!) CI. PT WY —MOUT STA’F lIMP’ - A •A7
PFPW TPR RTVP’W NFAP IIflA. MT. - -
P’P ?SflM CPFFK NP’AP VAN P’ODP4AN. “T.
I AIF RRFFP CRFFIT N ’AP KLFII 1 I ‘T - -
FAST PARROT (‘PFEK hEAR njlRjilI i MT — - - . I 3
WEST PARROT CKFEW MEAN RPUMDIIP, N Y X I . O
MUSSFI,SflP’I.I, Pt’?VP AT MOSPY. ‘IT. fl. 8
P
X XX XX XX XX
XX
XX XX
X
XX
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X XX XX
I
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T I A ‘I
I U A”
1”? A Pt
-------
TAPI r 5. TRI#T F OF cTATIOT’s MOIRE WATFR QI IAY ITY cnnCE’ITRAtIONS rxnroc CNTTWNIA.
0 f l650 7 Pn4
“ISSfltIQI RTVFR At V IPCFI,T.E. UT.
MISSflIJPI RTVFK NFAR 1,AMOIISVY. MT
MICSnIIR I RIVFR N ’AP rIItIwRtsnw.
‘C
XX
I,FGFIIfl: 0- CXCI.Fpc
x— rXrtFos
XX— FXrEFPS
‘ C
CRTIFRTA BY Td-,cs EI’AM 1 5
CRITFNTA MV “I) I V IA’S j59
rRITvQTA t#V UOPF TI’API 05
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17
-TAM F B “AR A PR MAY J’IN .TIJT. AI’G SFP orE “l-)V DFC ?‘ 1
ri c
PflWflF RTVFR At MOflPUFAU. XX XX XX XX XX XX VI V’ X I”
p w cp RTVFR IJFAP IOrATF-. MT. XX XX #1 XX XX XX i i
“I7PAH (Rf’FK AT rl,TVF. MT. XX
MJ7PAH CPFFK NFAP MI7PAH. MT . XX XX
TflM(;I,f. PTVFR At qTATF T.I”E NP UFrKFR MflU i i X XX
tflM(,I I RIVER R I , HA”GTNC WO”AN ç. XX
TOPIG IIF RTVFP AT MITES XX - - X — - - I I .ll)
PIII1pXJfl (11FF? ‘ lEAR MIT.rs C7TY MT XX
IITTFP rwrvv AT ASHT.A”O. “7. XX I) 0 n 77
“USTFR CPFFK PItAR KINSFY Mt V XX XX - — XX - 4 -
rIISTFR CPFFK MWAR KINSFY MT XX 1 A •14
(l’rfl, ;,n 4 CPPYX NFAP IS1AV. MT. XX
GI,FtJOIVI CREFK NFAQ CI,FNRIVE Mt XX XX XV 7 #143
flEFR (‘PFFK MFAP Gt,FNU7l E Mt - - - I C - - - — - c
roTTnNw(InI) C RE K MFAQ INTAWF $T X A # 117
PFAVFR CRFFK At WI BA I IX MT X XX 17 # 1.17
couljppri, CREFK NP flECKFR. MT. - YX - - - - — n
n(l FflhIfl #1RFEY AT KIRRY Mt XX 7 n.i
Pocr 000 e’RFEK MFAP CflI,STPIP. MT. XX XX XX X fl44
Pi iSrnhin rpr€v AT MflUtH. MEAR RflS - XX - XX XX X 0 # 1 .44
FAST FORK ARNFT,Lc rRrvK NfA c m. X A A 17
ARMPItS CRFEK NEAR FORSYTH. MT . XX
PIG SAME) CI AT WY—MO”T STAtE LTMF fl c
O r [ ,Apv5 PORK YE? LOWSTOPJF Pt 1( 10 NEAR RFLFR 0 XX X I I
RIG Nflflfl’( RFEK MEAR A”TFTIOPF MT - - - - - - - XX XX XX 7
f lOPIAR RIVFR At TNTERNATIONAI no XX XX 0 I I
POPlAR RTVFR NFAR SCORFY XX X A
POPLAR RTVFR APOVE WFST FOPK 1 MFA XX XX I i
POPlAR PTVFR NFAP POPLAR. ?‘T. XX XX I ?
WEST FORK POPLAR RTVFR NFAP PRED XX XX 17
FASt POPlAR RIVWR At TNTFPN TTO X 14
FAST FORK POPlAR RIVFR UFAP SCOB X X 17
POCK CPFFIC RFl flW HflR F CPF.FK. NE XX XX I ,
REAVFR CPFFK At INtEPMATIOMAT RO IINPARY _______ XX 4
PPPWATFR RIVFR AT CIRClE. U7 XX X 17
pFPWATFR RTVWR NFAR VIPA. MT. XX X I ’
PRAIPIF FIX CRFIK Nf AR OSWU.fl MT - X XX
“Il -K HTVFW AT NASHUA. T. X XX V i i
CROW ROCK CRFEK A’EAR CAHAGEN MT XX
POXEI,DFR CPE K NVAP POCKY POX MT - V
NE lSON CPFFK NFAR VAN PORMAN. U7
MIISSFLSHFI.?. RIVER NEAR ROIJNPIIP, XX XX
“IISSFISHFLI, RIVE P AT MP5RY MT. XX XX XX
flA p ? OPK RFI,I’W Mlscn”L,A. Mt.
XX
XX
XX XX
I #1 1 4
1 fl A7
‘.AO
A lESS TRA” PS
-------
TAR I,F 5 . TAM F OF q A Tl9 5 wOtRE wATFR Q’ IAT jty cOUrEPITPATJONS FxrErns rRTTWRTA.
x x 0
xx xx xx
Y X
x xx
xx xx
-- r
xx 0 XX XX
xx xx xx
- n_ fl- xx
P X X X x
nOV o c 1 1 i1 •
ch ic
c
1
c
1
7
1
I
7
7
I
2
I
1
7
I
7
7
7
4
7
x
VxXYX x
xx
xx
xx
x
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pPiirAflhl TTY
0. 40
o l -
0.11
is
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0 •75
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O
lAM F’FR - MAP b Kr i0}C hii; A uG c n n
VEV,LOWSTONF P 1 1/FR AT t,MIPE I MT x
VET LOWSTONF RTV R AT IITLT]MC.S MT xx
VFTLOWSTOUF RI”I P AT H!INTLFY • “T I _I
VETLOWSTONF P11/FR AT PORCYTH. “T 0
yglI,nwcTnNr P IVFP UEAP MTLFS CTTV. MT. x
VET,I,OWSTONF P1”FP MFAR STD9FY. Mt. x xx xx
.!P!Y! ? T ”YP± ] ! _ -- — — - - — - - ___ _ _ — __ xx xx
PTWDFR RTVWR NFAR T,nrA’E. J’ xx n xx
‘ij?PAH CREFK AT flI.IV . Mt. x
OTTFR PRFFK AT ASHIAMO. MT. 0
MIPSTVR CRFFK TWAP KINSFY MT xx
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.
-------
Table 6. Water Quality Trer ds
Stations and Parameters where Significant Statistical Differences were Observed.
Legend: I Improving Trend; = Degrading Trend; * = Parameter concentrations are at high levels.
Station
e
.
i-
41
C
41
o
0
a
0
.
0.
n
0
,,
•0
V
>
—
0
i
.
0
&,
0
41
•
c
41
.
e
—
C
.
41
41
4 I
—
4..
E
—
1
‘
a
C
.
‘
—
Missouri R biw Canyon Ferry Darn
D
Missouri R at Virgelle
D
&
Missouri R biw Ft Peck Darn
0
D
—
I (
0 (
—
jeld
02 &
0
I
—
0
—
0
—
D
D
—
0
—
D
—
D
0
2n-
Missouri R nr Culbertson
T
03)
St Mary R at Int’l Bdry
0
Yellowstone R nr Livingston
D
Yellowstone R at Billings
0
D
D
0
Se
Yellowstone R at Huntley
Ds
D*
D
Yellowstone R at Forsythe
0
D
D
Yellowstone R nr Miles City
0
0
D
Yellowstone R nr Terry
0
D
D
Yellowstone P nr Sidney
D
Powder R nr Locate
D K
U
D*
D
Mlzpah Cr nr Mtzpah
D
0*
0
D
Tongue R at State line
D
0%
0*
Tongue R at Tongue P Darn
0
D
0
D
D
Tongue P blw Hanging Wanan Cr,.
D*
0
D
Tongue P blw Brandenberg Br
0
D
0
Tongue R at Miles City
0%
0
Ptunpkln Cr nr Miles City
D%
0*
D
D
Otter Cr at Ashland
0”
0*
D
Hanging W nan Cr nr Birney
Squirrel Cr nr Decker
I
I
D
I
0*
D*
I
D
D
74
-------
Table 6 (continued). Water Quality Trends
Stations and Parameters where Significant Statistical Differences were Observed.
Legend: I = Imeroving Trend; D-Deqrading Trend; * Parameter concentrations are at high levels.
—
—
U,
—
—
—
—
-
—-
UI
0
in
I-
o
.
.
0
V I
0
in
Station
in
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C I
e
z
0
>
g
.
0
o
C
in)
in
in
Ui
in
IJ
I. .)
in
1
in
n
Z
Rosebud Cr nr Coistrip
D
Armells Cr nr Forsythe
1*
Bighorn R nr St Xavier
I
I
Bighorn R at Bighorn
I
I
D
D*
Little Bighorn R nr Hardin
D
D
D
Poplar R at Intl Bdry
0
D*
0*
Poplar R nr Scobey
D*
W Fork Poplar R nr Bredette
D
0 As
E Fork Poplar R at Int’l Bdry
0
0
1
I
E Fork Poplar R nr Scobey
I
Beaver Cr at Intl Bdry
D
0 ‘
Din
0
D
lig
Redwater R at Circle
Redwater R nr Vida
0*
Timber Cr nr Van Norman
D -
Din
0
W Parrot Cr nr Roundup
0*
0
D
Fattig Cr nr Delpia
D
D*
D
‘ ‘usselshell R nr Roundup
i
T
Beaverhead R nr Twin Br
D
0
0
Lake Koocanusa at Int’l Bdry
0
1
0
0
D
0
0
— ———_-
—_
Lake Koocanusa at Ten Mile Cr
0
I
D
Pb
Lake Koocanusa at Forebay
I
D
1
0
Pb
Kootenai R biw Libby Darn
I
D
75
-------
Table 6 (continued). Water Quality Trends
Stations and Parameters where Significant Statistical Differences were Observed.
Legend: I = Improving Trend; D = Degrading Trend; * Parameter concentrations are at high levels.
Station
0 0
(., ‘ ,
dI
0
C
— I 0 > 0 a
1. 0 — C — V
V 0 0. 0 a C 5 I- — —
‘. t. . 0. o I ‘ 0 u
.2 :
I,, ‘ =
Birch Cr Nr Valler
I
Otter Cr Nr Otter
0
Cottonwood Cr Mr intake
I
Big Sand Cr at WY—Ill Line
I *
Poplar R Hr Pop’ar
D
I s
D
Milk R at Nashua
0 ‘
Little Peoples Creek
—
.
—
—
-
-
-
-
—
—
0
-b--
Marias R Nr Chester
I
Zn
iI
E
E
I
P
;
I
E
EE
‘
76
-------
NORTH OA O’
Nitrogen
Table 7. Rankij q of Critical Water Quality Stations by Pollutant Group
Fecal Coliform
Phosphorus
Exceed.
Mos.
Conc.
Prob.
Exc’d
/l
1.
Red River of the North -
Fargo
0.50
3
935
1.
Red River of the North at
Haistad, MN
1.00
9
1.95
2.
Red River of the North at
Hickson
0.89
6
1.78
3.
Souris R nr Foxhoim
0.83
9
1.62
1.
Red River of the North at
Haistad, MN
1.00
9
0.30
2.
Red River of the North -
Fargo
0.62
9
0.27
3.
Souris R nr Verendrye
0.78
7
0.35
4.
Red River of the North at
Hickson
0.89
6
0.20
5.
Bois de Sioux R-Wahpeton
1.00
4
0.25
6.
Red River of the North -
Grand Forks
0.80
8
0.15
7.
Souris R - Kramer
0.70
7
0.15
8.
Sourls R - Towner
0.58
7
0.15
1.
Souris R nr F3x c
0.54
6
5599
2.
Souris R nr Sherwood
0.83
10
718
3.
Souris R nr Verendrye
0.70
7
660
4.
Park R on 1-29
0.63
5
880
5.
Forest R biw Minto
0.67
6
625
6.
Park R blw Park River
1.00
3
774
Dissolved Solids
77
-------
Table 7 (Continued). Ranking of Critical Water Quality Stations
by Pollutant Group
No. Avg.
Exceed. Mos. Conc.
Suspended Sediment Prob. Excsd mg/i
1. Pembina R at Waihalla 0.54 3 1063
2. Pembina R nr Vang 0.58 3 832
3. Little South Pembina R nr
Waihalla 0.45 3 409
4. Red River of the North at
Hickson 0.67 4 96
78
-------
tAP I r 8 TAB? F (IF cTATToMS WI IEPE WATFR OllAt ItY CONrLNTRATIOI4S FXCFFOS rRTTFRIA.
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nr c’ t in ‘ ( rjn n r
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F(IPFST P 8 MTI,FS EAST OF NTNTO
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A K RTVFR ?V’ T.flQ NORTH DAKOTA X
FORFST P 8 ?U(,F5 FAST OF MTNTO X
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PFO RIVER OF Till’ NORTH At HA? ,StAfl. NP?
S(I ’IRTS PTVFR N FOTHO II’. N
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cOURTS NTVFR A (IVI ’ MTNO1 • NI)
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PFMHTNA PT”EP FIT NFCHE. Nfl
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I ITTT.F SOIJI ’H PFMPPIA RTVFR NP WAT,KAI T A. X -- - 0
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TA IY 8. TART F; 1 ’ STATTIJ1’S WHERE WATFR QII ,1Ty CflPICF;”TRATi N FxrE ’nc rpT’IFRLA.
!7f .r4 P — PFWRTNA. N h
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cflt T5 RTVFN NP I)AAITQY. Nfl
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PAPK RTVrR AT CRAEI’()M. NP
PARK RTVFR OW 1—79 NflRTH DAKOFA K
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WOQI.ST RTVFR AT MIPJTfl. NI)
FOQFST RTVFR NFA MIMTP ‘. 0 Y
FoPI ST P p MTl,FS EAST OF MTNTO - x - -
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SOuTH DRATICH PARK Pl”FR RFIfiW 9014MF flAW. V
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PP.0 P — CRAND FDPK. t)
EP P — PFUIITNII NP
PAPK RTVFH n ’ 1—29 NORtH I)AKOTA
FOREST RH MILP S EAST 0LMT T0
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-------
Station
Re R of ike NGrth-Vargo-
P d R of the North at Haistad, Ml
Red R of the North at Grand Fork
Souris R nr Westhope
PEnbina R nr Yang
Sheyenne R at Lisbon
Sheyenne R nr Kindred
Wild Rice R nr Abercromble
Missouri R nr Williston
IMissou r i R nr Garrison Dam
[ Missouri R nr Garrison Dam
Missouri R at Bismarck
Missouri R nr Schmidt
James R nr Manfred
James R at Lamoure
Buffalo Cr I b. nr Gascoyne
Cannonball R at Brelen
Heart R nr South Heart
Square Butte Cr biw Center
Knife R at Hazen
Little Missouri R nr Watford City
Bear Den Cr nr Mandaree
Table 9. Water Quality Trend Table ‘o r:; : , -A
Stations and Parameters where Significant Statistical Differences were Observed.
Legend: I Improving Trend; Degrading Trend; * = Parameter concentrations are at hagh levels.
83
-------
Table 9 (continued). Water Quality Trend Table
Stations and Parameters where Significant Statistica’ O fferences were Observed.
Legend: = Improving Trend; Degrading Trend; * = Parameter concentrations are at high leves.
Station
5
—
I-
C
.
z
o
.
.
9
,
.,
0
,.,
.
>
—
I
!
0
n
•0
C —
.
—
.
‘
ii
=
.;
x
Deep R nr Upham
I
I
Little S P nbina R nr Waihalla
0
Park R on 1—29
I
Forest R nr Mlnto
1*
Goose R nr Hilisboro
I
D
DMg
8eaver Cr nr Finley
I
Sheyenne R nr Warwick
0
Sheyenne R biw Baidhill Dani
I
Sheyenne R - Valley City
I
Baldhill Cr nr Dazey
I
I
D
Pilot Drains at Oakes
0
— -
D
Cannonball R at Regent
I
Elm Cr nr Golden Valley
I
Charbonneau Cr nr Charbonneau
D
I
I
I
I
IL
I
I
84
-------
Table 10. Ranking of Critical Water Quality Stations by Pollutant Group
No. Avg.
Exceed. Mos. Conc.
Fecal Coliform Prob. Exc’d rng/l
1. Whitewood Cr biw Deadwood 1.00 12 57539
2. White R nr Kadoka 1.00 5 20000
3. Bad R nr Ft. Pierre 1.00 2 35000
4. Cheyenne R biw Plainview 1.00 3 16640
5. Cheyenne R nr Wasta 1.00 1 35000
6. White R nr Oglala 1.00 2 8200
7. Rapid Cr biw Rapid City 0.71 5 4410
8. S Fork Grand R nr Bison 1.00 1 11000
9. Big Sioux R nr Richiand 0.67 8 1747
Nitrogen
1. Cheyenne R at Edgemont 1.00 1 64.2
Phosphorus
1. Rapid Cr biw Rapid City 1.00 7 2.11
2. Big Sioux R - Brandon
to Richiand 1.00 12 1.21
3. Rapid Cr nr Farmlngdale 1.00 12 0.72
4. French Cr nr Custer 1.00 12 0.76
5. Box Elder Cr at New Under-
wood 1.00 7 0.97
6. James R abv Mitchell 1.00 12 0.36
7. Whitewood Cr blw Deadwood 1.00 11 0.33
8. White R nr Oglala 1.00 9 0.27
9. Little White R nr White
River 1.00 8 0.27
10. Fall River at Mouth 1.00 1.2 0.17
Dissolved Solids
1. Cheyenne R at Edgemont 0.75 9 3648
2. Belle Fourche R nr Elm
Spgs 0.42 5 2544
3. N Fork Grand R nr
Shadehill 0.56 5 2622
4. Bad R nr Ft Pierre 0.50 4 3650
85
-------
Table 10 (Continued). Ranking of Critical Water Quality Stations
by Pollutant Group
No. Avg.
Exceed. Mos. Conc.
Dissolved Solids Prob. Exc’d mg/i
5. Horse Cr nr Vale 0.33 4 3466
6. Moreau R nr Whitehorse 0.60 3 2450
Suspended Sediments
1. White R nr Oacoma 0.78 7 7077
2. Cheyenne R at Cherry Cr 1.00 9 1750
3. Belie Fourche R nr Elm Spgs 1.00 10 1124
4. Moreau R nr Whitehorse 0.67 581
5. Big Sioux R at Akron, IA 0.89 8 182
86
-------
?API,F 11. TAI*IF OF STA1TONS WIIIPE WATFP QuAlITY CrINrE TPAT1ONS FXCFFOS CRTTFRTA.
lAM FM MAP APR MAY JtIll .IIJI. 4l?( S P OCT H0V
fY(’ . OF ‘CF
nOS IPuiflAn I !.I1 Y
- no - - -
MISSOIIPI P AT PTFRP SO XX 1?
PI( SIOUX PTVLP AOOVF MATIRTOUM XX XX -
PIC SIOU’( M AR WIITFR1OUN XX XX II ’
PlC SIOUX P1VI P CENI TAPY ROAO 0
Pi UPThi 5 fl 1N - — - - I ,
PlC SIOuX PIVEQ AT RRA”UON S OAK X * 4
I(’, SIOuX PIVF.P FAST Or CANTON
PTC SIOUX RI’ K FAST OF HUPSI1N XX X I 7
PlC SIflIIX PIVFQ S OF AICESTFR Y X I ,
PjC SIOUX P AT AYRON TA XX 24
PlC 510 1 1W PIVFP “EAR PTCML,AHP Sn XX X
lAMFS RIVER “ AR HFCI.A Y U 10
IAMFS P AT COTIIMPTA . 50 0 2l
1AMFS PIVFP “EAR STR TroRn 0
,1AMFS RIVER AROVF IlU 0 XX *7
,TAMF5 RIVER AROVF M1TrI F(L XX 1 7
lAMES RIVER MITCIDI,L XX
.TAMES p Mf’Ap SCOTI,ANfl Sn XX
.1AM .S RIVER NOPTU OF YANKTON XX 1) 1
KEVA P’ HA RIVER PJF:Ap WFWFIA Y % 0
WHTTF RIVER ‘FAK KADOKA
....j W 7TF P NEAR OACOMA SD XX 25
CHEYENNE P NFAP RUEFAJO CAP X
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Rj( SIOUX RIVER CEHF:l ’ADy ROAD XX X X X X XX XX XX X X 17
‘ I( S1”IiX RIVER UEAR BPOOKTN(S x x x X x xx xx xx x x I,
RT( Sioux PIVF.R NEAR IWLT. PAPIOS XX XX XX X XX XX XX XX X X II
PI( SiOUX R1’IER TNSTOUX F’Al,lS ________ XX XX X -- XX XX - XX - XX XX X X 12
.cTflhPX RIVER AT BRANN1N S OAK XX x cx xx xx XX XX XX XX XX XX 14
flf( SIOuX RIVER ‘AST OF CANTON XX XX XX XX XX XX XX XX XX Xx XX XX 31
nic sinux plvF.p FAST OF h4UflSflR XX XX XX XX XX XX XX XX XX YX XX XX 17
R1( SI UX PIVFP SE OF AI,CESTFR XX XX XX XX X XX XX XX XX XX XX XX 1
PI SIOUX RIVER NEAR RTCHLAND SD xx xx xx xx x xx xx xx xx xx xx xx i
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jANFS PIVFP flET,O’ UITCI4ET,L XX XX XX XX XX XX XX XX XX XX XX XX 17
TAIIES P11/FR NORTH OF YANKTON - XX XX XX XX X XX XX XX XX X XX XX 17
KF.VA PAHA RIVER ‘t A WFWFliA XX XX X 0 0 XX X 0 X
UHTTF P11/FR NEAR fl( lAIA XX XX X x x ‘vx xx x o
111/FR ‘IFAR KADOKA — - -
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PELL,F r,1I,RrHF P 7J R flr y. ; FIMIPC -- - -— - - - - - XX XX AX XX
REOWATFR K AT flEI,I,F FI)IIPCIIF XX X
SPFARFTSM CR TN SPFARFTSW.SI) XX
SPREARFISH CPF K 141 1.F FROM PFI ) WA1FR P XX -
PAPIR CRFF.K NEAR ROCIWflPO XX
TIN 9F SECTTO ” 10 PAPTI CPFFK
PAPTI) I’RFFK “FAR F R’4I ”(;nAl.F XX XX X
t,rGFNO: 0— FXC FOS CRTTFPTA IIV ,,i:cs
X— FXCFFPS CRITFRTA NY P)r)P
XX— ‘XCI FI) CWITFRIA flY “(IRE
V
TIIA” lS
TUAP’ IS’ F U SS TI4A ’ fl 9
))I4 P 9
-------
TARI,W 11 ‘TAIjI,E flF’ cTPIrTONS WHI PF A Vft (JIIAI,ity CflFJrEPJTPAtIONS IXflFfl rRTTFRTA.
ln2 Q Pes—citsi’
- - -- - -—-— - -
R IG SIOUX P PIFAM n F L ? , PAPIPS Sn
flit S IOUX P AT NORTH C?IYF A VE A X
RF.?,1 1 F Fcitlpriir P AT WY—SO StATF I . V XX XX
8flI 4 cusp srp
s+4*i*iöi é4sjSs$i
MLSSOIIPI P At PIFROF Sn
MISSOURI P At FORT PANDA?? Sn
RjC SI nUX P “FAR DFL?, RAPIDS SO
njr s oijx P At AVRON TA
,IA FS P At COII IMPTA SO
JAii i ii’Ap sroTLbNn so - -
WHTTV P NEAR OACOMA so
CIWYFWMF P At HFRPY rPr K Sn
PE?LF FO??RrHF P “EAR VIM SPRINGS
rASTIF CR AROVF DEFPFTFID PFS PIE
U nREAl? P WrAP NHTTWHOPSE Sn
0 XX XX
X
0 X
XX
V XX
XX XX
XX XX
XX
XX
X
nr’r ‘rjV OVC “n_
v1 c
•1
1 7
XX In
•1
S
P
A
1
f t . n .’P !( V
pPflflAflI ?.Tty
n_ i .’
n.nA
n_In
A. 4fl
fl 114
n_I l
n. l’i
1A n.I.’
IA n I3
i n_cl
I •flo
P A I3
P nR R
o n qq
A fl .il
o n• Pq
n
n j •nn
In l A o
in n.Po
A
00940 CHlORIDE
* * * S * 5* 5* 5
nit: SIOUX P AT NORtH C? 1FF AVE A
7
4 n•75
00600 NHitPlH4
1 lA ’ r n MAP APP MAY lilt .1 1 ? ? ,
CASTLE CRVFK NVAR MYSTIC XX XX
DAtTIE PFFK pjrAo V VSttl9F - - - - - - - - - - y
CRACW rnnl,n)rj CPEFK
HORVAU RIVFR PIFAP lIStA XX XX XX
MODEA II RTVFR NVAP VUITFI I ORSE - - - - — - - XX Xt - - -
S. FORK t:pAwn P. PIORT II (iF P 1SOM XX XX XX
CPAMfl RIVER “EAR ?,ITtl,V FAGIF XX
I.ttttrRY h ’IPU P &t rAMP rHiloK X 1 --
AUG S f P
XX
0 XX XX XX 7
0 0 X XX XX
X XX XX XX XX
X
XX 0
XX XX
XX
XX XX
XX YX
XX X
XX
XX XX
XX X
XX XX
XX XX
XX
XX
XX
XX
0 0
XX XX
XX XX
XX X X
X fl
X X XX
0fl945 SU?,FATF
— - -— — - — - - - —
lAMES R WEAR srotLANn SI) X X
CHFYFN”F P $F(JO A”GOSTURA DAM S
C hEYENNE: P N AP RIIFFA?,o CAP SD -
CHFYFNPJE H At (‘HFRQX (‘PEFK Sn
rHryrNNE P HEAP FACLF P hiti F co
PE??,F FovIprHF P PT wv-co STATE I .
PE IIF F I l r P “FAR STI?RGTS SD
RE?LF Folipruir R ‘ IVA N VIM SPRINGS
HORS? CR NFAR ‘AI F SD
INlET CANAl. Nf R BVI.I.E. FOIIRCHF S
MOPVAU R NFAP WHITFI- IORSE Sn
GRAND P T SMA OEP I IL so
X X X X X X
XX XX X X XX K X XX
XX XX XX I i XX XX 0 X
V X XX X XX_ XX - X X
IX XX V X XX X X
XX XX X X X X
XX X X X X
XX X XX XX X XX X
0 0 X X V
X X X
O I ) - ( I
Irr.rNnz 0— CRITFRTA BY TESS
X— FXrf.rDs CRTTrRTA RY I’I IPf’
XX— tXrfFnc CRIIFI 1TA BY PII 1OF
XX XX XX
XX X XX
XX X XX
XX XX XX
X XX XX
XX XX
X XX XX
X 0 0
XX
0
12 fl I l
A 1.00
1 7 I ni )
1?
1 2 n•fl;;
11 1 _ no
P I flO
ji
II n . P
n c
c fl,Ro
XX
XX
XX
XX
XX
X
XX
X
TI IA ”
r h Ir ,
T?’/I”
1 51
151 ?.pSS THA” P )I
-------
‘r ny,r 3 ] ‘. TART E or q cnn WWERF wATrp QUAY ury cnNrr”rpAtLnws rXrrrnc rRTTFRIA.
j l9flfl MFDCIIRY
$t $ 5 5* 5 * 5 * 4* 5 *4* 5
MISS O uRI P At PIFRPF Sn
tc SIOUX P Mf OFIT. PAP IOS Sn
WHTT P NFAR OACOMA so
01042 COPPFR
4*5* , *5* * * 4 $ * S * * *
WIIITF P NEAR flArnMi Sn
CHFYFNNF p At r rpy CPF FK Sn
“•I I
A. S n
0 13
A.,
A • S O
A • Sn
4
1
9
7
Q
P
XX P
X X P
XX P
X A
X XX 0
TX XX fl
XX I I
X S
4
I
- 1
1
I
- - - ———- 1
( ‘.44
(‘.11
n.m
A •75
A.’,
A.
( ‘ . 1 k
A. 7 0
o .
(‘•13
A A7
ñ A7
A • 75
(‘.75
p. ’ . ’ -
. A” vrR MAR APR MAY J!I1J nit. All’., S f
nnc pniiPM It IVY
,rT M(IV nrr
r nri’er
( ‘IC SIl l ilY N I R WATFRTOM;i X
VERMII,!JIT1N P NFAP WAKO”DA X
,TAMES RIVFP AROVF MItc hE lL X TX
,TAMFS RIVFP nrv.nw MITCMET,IJ XX
,TAMES PlVF!.P NORT h OF YAIJKTON XX
t1 ’ pqr srrTro’ i o RAPID CPEFK X
PAPIT) rprcv NEAP FARMINCPAT,E _________________ X
006 10 NH1+NH4—
RIG s mut RIVER AT RPA”DAN S OAK XX XX X
RIG .crnin PJVFP rAST 1W cANTON X
RJ( 5IAIIX RIVER FAST OF HUOSAN V
( ‘IC SI(’IIT RIVER SE OF AL ESTFR
PLC S TA IIX RIVER NEAR PTCHIJANfl so
,IAMES RIVER NORTh 1W YANKTON
Wj tL’Wnbn rRrrv P F.o htAOI4OtlD — - - X
wij ITE w non RFEX AT Pt,IIMA XX X XX
WIITTFW000 rprEX NE I R WI IITF.wnflu)
TIN P9F SF TTCW 10 RAPTO CPFFK
01002 ARSENIc
- - - - — — -
WIITTF P NE R OACAMA SO XV
v.t 1 r Fr uF . P. BELOW CANFLIIFNCF XX
PET ,L PoiupNiPP 5 3E.AR ELM PRTPJ ä — - - — - -- -xr
whlTTrwonn cRFEV AT OFA OW00 0 XX
WHTTFW000 r €w AT CROOK CITY X XX
wijtTrwnnn rp. áp nyP n s,Lrpcnr. xY XX — - -
01014 nlpoMIllp4
— - - - - -- --- - - - — — --- -- —-— - - - - —-- - --—- — -
WNITF P NEAR OACOMA Sn XX
c HEY ENNE P At (‘HrPPY CREEK Sn XX
01147 SET,E’ 111114
“HTTI’ (‘“EAR OACflMA Sn - —
(‘HFYFNNF P At rHERPY CREEK SO
XX
X X
6
4
-— 4
4
— —-- 4
X ‘ I
XX 4
- XV - - 4
(,Fr.FNn ( I— rxrErl)s rRTTFRTA 1 kV tESS Ti’A” I 5t
X— rxrrrns CRTTVRTA RY P’(IRf ThAN I ‘it c; I ESS TUA 1 ( ‘5*
XX — rXch rDs rpTlFWIA 1kV “lInt rIIA’I PS
4 ( ‘.7 5
A 75
A
-------
n.7L 1
fl•7’.
“ .13
TAPI,F I I. ‘TIAR I r çjr CTATTOt’S WHEPE W TFR (Jl’M ITY cONrFNTPATIflNc rxrp nc rRITFI4TA.
,IAM F R - UAP ADR MAY 4 1 11N iii !. A G S P g I rT n f l ’ , rgr —
oin’;i IFRI)
3** 5* 5 5 5 5* 5 5 5 5 5 5 5
WHTTF P NEAR OACPMA sn - - - X X
OI0’17 7T”C -
‘4IITTF P ‘If’AP OACPMA Sfl XX
rnFyFu”F P At rprppy CPEFK 5fl X
01077 rAnNTIJ”
* * *s*s*S**Ss**S$*
.IAMF.S P AT CnutIMnIa sn I
WIITTF P PIFAR OACPM& cn XX
ppncrsclnr. (‘nMPI.FTF Fop PEflLIFSTPP PERIOD
Ptj;• i- y( ri ni P’r
prgiua , fl ! JTy
4
‘0
C u
-------
Table l2 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
0
0 0
I
In
a C L. a i 4 1 In
z >
a Q. 0 a Z alt c —
I I 0 U a
2
Missouri R at Qahe Dam
D
D
0
D
0
0
0
Mg
Hg
Missouri R at Pierre
0
Missouri R at Big Bend
D
I
D
Missouri R at Ft Randall
0
I
D
DCd
Big Sioux R abv Watertown
I
I
I
Big Sioux R Mr Brookings
I
Big Sioux R Mr Dell Rapids
D
D
I
DH 9
Big Sioux R at Sioux Falls
I’
0
I
Big Sioux R at Brandon
I
I
D
I ‘
Big Sioux R Mr Canton
D
I
I ‘*
Big Sioux R Mr Hudson
D
0
Big Sioux R Mr Alceste
D
I ;
Big Sioux R at Akron, IA
D
D
Big Sioux R Mr Richland
0
James R Mr Hecla
I
James R at Coltmibia
James R Abv Huron
I
I
I
:
James R at Huron
D
James R abv Mitche l
James R Ur Scotland
D .
I
0
I
I
James R Abv Yankton
D ;
0
Keya Paha R Mr Wewela
11
0 .
D .
1
I
I
L
96
-------
Table 12 (continued). Water Quality Trends
UTH DAKOTA
- Stations and Parameters where Significant Statistical Differences were Observed.
Legendi t = Improving Trend; = Degrading Trend; • = Parameter concentrations are at high levels.
Station
1
‘0 ‘0
‘0 0
v, v, I
u
‘0 ‘0
L. V V V
— 41 0 > ‘0 5 V ‘0
L D .
41 0 0. o a c a I- —
— 1_ 4 ) 0. 0 1- 0 V
Z D. C < LI
1
v
4 1
—
= Z
White R Hr Oglala
I
White R Mr Kadoka
D
0*
White R Mr Oacorna
-
0*
D
-b--
D
Little White R Mr Whlte• River
Cheyenne R at Edg nont
I
Cheyenne R blw Angosture Darn
I
I
I
Cheyenne R Mr Buffalo Gap
0*
Cheyenne R Mr Wasta
D
Cheyenne R at Cherry Cr
——
-
-
-——-
Zn
Cheyenne R Nr Eagle Butte
I
0
Belle Fourche R at Wy-SD Line
D
D*
0*
Belle Fourche R Mr Belle Fourche
0
0
Spearfish Cr at Spearflsh
0
Rapid Cr Mr Rochford
I
Rapid Cr blw Pactola Darn
I
Rapid Cr abv Rapid City
D
D
I
I
Rapid Cr Nr Fanningdale
Battle Cr Mr Keystone
Freich Cr Mr Custer
D
0
0
0
French Cr in Custer St. Park
D
Grand R Hr Little Eagle
Grand R at Shadehill N Fork
Grand R at Shadehill
0
I
I
I
I
i
97
-------
Table 13. Ranking of Critical Water Quality Stations by Pollutant Group
No. Avg.
Exceed. Mos. Conc.
Fecal Coliform Prob. Exc’d mg/i
1. Jordan R at 1700 S, SLC 0.71 5 5557
2. Virgin R at Bloomington 1.00 7 587
3. Jordan R at 5800 S, Murray 0.38 5 2208
4. Paria R at White House Ruins 0.33 3 1735
5. Virgin R at Littlefield 0.50 5 552
Ni trogen
1. Jordan R at Cudahy Lane, SLC 0.53 6 4.34
2. Jordan R at 1700 S, SLC 0.60 5 4.57
3. Jordan R at 5800 S, Murray 0.53 7 3.70
Phosphorus
1. Jordan R at 1700 S, SLC 1.00 10 3.56
2. Weber R nr Plain City 1.00 11 1.05
3. Jordan R at Cudahy Lane, SLC 1.00 9 1.06
4. Jordan R at 5800 S, Murray 1.00 11 0.57
5. San Juan R at Shiprock, NM 0.92 11 0.46
6. San Juan R at Bluff 0.80 7 0.35
7. Green R at Green River 0.80 7 0.30
8. Bear R at Corinne 1.00 10 0.18
Dissolved Solids
1. Bitter Cr nr Bonanza 1.00 5 12576
2. San Rafael R nr Green River 1.00 8 3163
3. Ferron Cr nr Clawson 0.92 10 2284
4. Price R at Woodside 1.00 7 3284
5. Virgin R at Llttlefield 1.00 11 1854
6. Paria R at White House Ruins 1.00 10 1751
7. Muddy Cr nr Hanksvllle 1.00 6 2258
8. Virgin R at Bloomington, AZ 0.89 8 1758
9. Jordan R - Murray to SLC 1.00 10 1100 •
10. Duchesne R nr Randlett 1.00 10 1046
98
-------
UTAH
Table 13 (Continued). Ranking of Critical Water Quality Stations
by Pollutant Group
No. Avg.
Exceed. Mos. Conc.
Suspended Sediment Prob. Exc’d mg/i
1. San Juan R nr Shiprock, NM 1.00 12 5877
2. San Juan R nr Bluff 0.92 8 5268
3. Green R at Green River 0.92 8 5264
4. Muddy Cr nr Hanksvilie 1.00 5 6130
5. White R nr mouth 0.91 7 2428
6. Price R at Woodside 0.88 5 1901
7. Virgin R at Bloomington, AZ 1.00 7 516
8. Colorado R nr Cisco 0.82 6 683
9. Virgin R at Littlefield, AZ 1.00 6 480
10. Bear R nr Corinne 0.89 7 178
Trace Elements
1. Jordan R at 1700 S, SLC 0.80 5 (Hg)
99
-------
TAPLE i4 TAME OF STATI(’NS WHERE WAT ROI]ALITY CONCENTRATIONS EXCEFOS CRITrIPTA.
JAN FEB MAR APR MAY JUH JUL AuG SEP OCT NLV fl C NIP.
OFiS
0C 130 0 DO
PARIA R. AT WHTTE HOPPSP” RUINS ‘JR GLEN — —- - -- -
CR .EPJ RIVER AT GREEN RIVER. uTAH X
PRICE RIVER AT W000SIOF, UTAH XX
.JDRIAN PTVER P 1700 SOtJTH SAT,TLAKt CT —
JORDAN RIVER P CPPDAHY LANE MR SALT LAKE X K K
3 162 5PTCC1Th1 — - - - -
*S 5* 5* 5* * 5* 5* 5* 5*
REAR RIVER APUVE RESERVOIR NEAR WOODRUFF K
PEAR P AT RORDER WY ____________ _ X
RIAR R HR COPINP4E 0 K 0 K XX XX
COlORADO P AT LFFS FERRY. AZ. XX
VIR(1N R• AT D1,00MINGTON.UT X XX XX - XX XX —
VIPGILI P AT LITTLEFIELD, AZ XX XX XX X 0
PARIA P. AT WHITE HOUSE RUINS HR GLEN CA XX XX XX
GREEN RIVER AT-T.REflr-RTVER; UTAH —— -- - - -- - - -
WHITE RIVER AT NOUTH NEAR (PUPA! UTAH 0
DOL.(1RES RIVER NEAR CYSCO, )JT, X
JORDAN RTVEWTS800 SO MURRAY UTAH - -— XX XX XX XX — --
JORDAN RIVER 1700 SOUTH P SALT LAKE CI XX XX XX X XX
JORDAN RIVER P CIPl)AHY LANE HR SALT LAKE X XX XX XX XX
SEVIF.R RIVER NEAR LYNtJDYL,UTAH- -— O -- — -
RIVER NP PLAIN CITY UTAH K K
JORDAN RIVER 0 5800 SO MURRAY UTAH XX XX XX XX XX
31501 TOT COb!
** $ 5* * * * * 5* 5* *5* 5
WHITE RIVER AT MflUTH—NFAROURAYlJTAH — XX -- - -
JORDAN RIVER 0 5800 SO MURRAY UTAH XX XX XX XX XX
JORDAN RIVER P CUDAHY LANE NP SALT LAKE XX XX XX XX
JORDAN RIVER P SROO SO MURRAY UTAH —-——XX - XX - XX - XX - XX -
00600 ToTAl, N
—----——— ——-—--—— ---- - - —--—— -— - _--- —-—-----
SAN JUAN RIVER AT SHIPROCK. NH X
PRICE RIVER AT W000SIDF, UTAH 0
WHITE RIVER AT MOUTH NEAR OURAT-1ITAH -- ---0— - — — - — - --- x —- -- -— -—-- - — -
DOlORES RIVER NEAR CT$Cfl.UT. 0
JORDAN RIVER 9 5800 50 MURRAY uTAH 0 0 K 0 0 0
JORDAN RIVER 0 1700 SOUTH P SALT LAKE CI - X O —— - —K - -
JORDAN RIVER P CIIDANY LANE NP SALT LAKE X X 0 X K K
JORDAN RIVER P 5R00 SD MURRAY UTAH 0 0 X 0 0 0
00665 PHOS—TPT
5* 5* 5 *5 *5* 55* 5 5*5
BEAR RIVER ABOVE RESERVOIR NEAR WOODRUFF X- - XX XX - -— XX XX 12
REAR P Al RORIWH WY K K 12
LEGEND) 0— FXCEEDS CRITERIA BY lESS THAN 15%
- XaEXCEEDS CRITERIA BY MORE THAN 15% &LESS THAN 85%
XX— EXCE .DS CRITERIA BY MORE THAN 85%
1 XCF.EDF 1JCF
P ROB AR IL. I TV
9 0.13
7 0.14
P 0.13
31 - 0,09
1? 0.33
17 0 .OR
12 0;25
9 0•78
32 0,OR
- 1 fl0
10 0.50
9 0,33
P -0.13
8 0.13
6 0.17
13 0;38
7 0•7 1
14 0•SA
5 0;20
9 0.22
13 0•3 8
8 0.13
32 0.50
14 0.36
12 0.50
12 0.08
9 0.11
X 11 0.27
7 0.14
K 17 0.53
K 10 fl;60
15 0.53
K 37 - .53 .
0.50
0.17
-------
TARIE 14. TABLE HF STATIONS WHERE WATER QUALITY CONCENTRATIONS LXCI EOS CRITERiA.
JAN FEB MAR APR MAY JUN JUL. AUG S .P OCT NOV DEC
REAR P HR COPINME - X1XXX XX XX - XX XX XX XX X
COLORADO RIVER NEAR CISCO UTAH XX XX XX
COLORADO RIVER AT HIGHWAY RRTI)GI NP HOAR XX XX XX
COLORADO P ABflVF MI T . cRFEENP:AR HOAR UT- -— ——XXXX XX - - -
VIRGIN K AT LITTT,EFIELO, AZ X
PAPIA P. AT WHITE HOUSE RUINS NM GLEN CA XX
SAN J(JAN RIVER AT SHIPR0CE NM ———XX XX - XX XX XX - XX - X X
SAN JUAN RIVER NEAR flI,iIFF, UTAH XX XX XX XX XX XX XX
GRFfN RIVER NEAR GPEENUALE, UTAH X XX
c,REFNRrVEPA1GREFT1RTVER7UTAH XX X — XX XX - XX - - - - X —- X
COTTONWOOD CR.ABV STR.CANYON.NR ORANCEVI XX
PRICE RIVER AT W000SIOE, UTAH X XX
WHITE RIVER AT NOUTH I3FAR OURAY UTAH — XX X XX - - X - - - - - -
OIICHFSNV RIVER HEAP RANDLF.TT. UTAH XX X XX
DOLORES RIVER NEAR CISCD.HT. XX X
JORDAN RIVER H 5800 50 MURRAY UTAH —XX—XX—XX—XX—-XXXX- XX - XX --XX - XX XX
JORDAN RIVER H 1700 SOUTH H SALT LAPE CI XX XX XX XX XX XX XX XX XX XX
JORDAN RIVER A CIIDAHY LANE HR SALT LAKE XX XX XX XX XX XX XX XX XX
SEVIER RIVER14EAR LYNHDTL;UTAH X—— X—XX XX
WEBER RIVER HR PLAIN CITY UTAH XX XX XX XX XX XX XX XX XX XX
.JQRDAN RIVER 5800 SO MURRAY UTAH XX XX XX XX XX XX XX XX XX XX XX
00650 T P04
PEAR RIVER APOVE RFSERVOIRNEARW000RUEF XX -
REAR R AT BORDER WY XX
REAR P NP COPINNF XX XX XX
COlORADO RIVER NEAR CISCO IJTAH - -- — XX —— - - - -
COl,ORAIM1 RIVER AT HIGHWAY BRII)GE HR MOAB XX
COLORADO P ABOVE MILL (‘REEK NEAR MOAB UT XX
SAN -JUAN RIVER AT SHTPROCK;NM -- - XX_XX_X - -— -
SAN JUAN RIVER NEAR BLuFF, UTAH XX
GREEN RIVER AT GREEN RIVER. UTAH XX
PRICE RIVER ATWOODSTDE; UTAH XX —
WHITE’ RIVER AT MOUTH NEAR OURAY UTAH XX
I1UCHFSNE RIVER NEAR RANDLETT, UTAH XX X
flOL0RES-RIVERt IEARC!SC0.UT. ——XX -
JORDAN RIVER H 5800 SO P1IIRRAY UTAH XX XX XX
JORDAN RIVER 9 1700 SOUTH H SALT LAKE CI XX XX XX
JORDAN RIVER H CUDAHY LANE NP SAT,TLAKE —— XXXX XX
SFVIFR RIVER NEAR LYNNOYL. UTAH XX
WERER RIVER HR PlAIN CITY UTAH XX XX XX
JORDAN RIVER H 5800 SO MIJRRATIJTAH - - - -— —XXXX XX
70300 RESIDuE
-- - --—--- —--— —---- ______————-— ---————-- -- - - —- ———--—--—-- --—- ---_ - — - —
BEAR B MR CORINNE’ X X X XX XX XX XX X
COLORADO RIVER NEAR CISCO UTAH X X X XX X X
COLORADO RIVER AT HIGHWAY BRIDGE NB MOAR - X X X X -- - -- 0 X XX - XX
COLORADO R APOVF MILl. CREEK NEAR MOAB UT X X X X 0 X XX XX XX
LEGENDI 0— £XCEEI)S CRITERIA BY LESS THAN 15%
X— -EXCEEDS CRITERIA NY MORE THAN 15% & LESS THAN
XX— EXCF.E.D& CRITERIA BY MORE THAN 85%
NIu. .XCFFDPNCF
ripS PROBABILITY
II 1.00
tO 0,40
8 0.50
10 - 0.40
3 ( 1 ,13
1 1.00
1? n . 2
10 0.90
11 0.18
10 0,80
2 0.50
9 0.33
11 ---0.36
10 0,30
0.29
17 - - 1,00
11 1.00
35 1.00
10 - - 0,40
11 1,00
17 1.00
- 0•33
3 0.33
3 1.00
2 -- 1.00
2 1.00
2 1.00
3 1.00
2 1.00
2 1.00
2 -1300
8’ 0.13
3 0.67
2 - 0;50
5 1.00
3 1.00
5 1.00
2 0.50
1 1.00
5 1.00
It 0.82
10 0 . 1 10
tR fl.72
19 0.74
-4
>
=
-------
COlORADO R AT LEES FERRY. AZ.
VIRGIN R, AT BL( flMTNGTOFJ,UT
VIHCTN P AT LITTIFFIFID. AZ
PAPIA P AT WIITTE 1 100SF PluMs NR GLFPJCA
SAPI lUAU RIVER AT SHIPRIICK. MM 0
SAN 311AM RIVER NEAR PIUFF, UTAH
GREEN RIVER NFAR GPEENDALE UTAH0
GREEN RIVER AT GRESFN RIVER. UTAH X
SAN RAFA E II RIVER NEAR GWFEfl RIVER, UTAH XX
Pp Tcr—PTVEWAr-W 0 00sTnE UTAH
WHITE RIVER AT MOUTH hEAR OURAY UTAH
HElL’S HOLE CAN AT MOUTH NP WATSON UT
DIICHFSNE RIVER NEAR RANDLFTT;- UTAH
DolORES RIVER NEAR CISCO.I)T.
JORDAN RIVER 0 5900 50 MURRAY UTAH XX XX
JORDAN RIVER P 1700—S ITHRSALT1iAKE CIXXXX
JORDAN RIVER P CIIPAHY LANE NP SALT LAKE XX XX
SEVIER RIVER NEAR lYNNOYL, IJTAH XX
JORDAN RTVERB 3800 SO—MURRAY UTAH— ——XX
I XCEEDFNCI
rP(iI ’ADJ LITY
I .00
0 8Q
I .00
-- 1.00
0.25
0.50
0.36
0 • 70
1.00
I .00
0 73
I • 00
1.00
0.71
1.00
-- -0.91
0.93
1.00
t;00
X X
X
-_---———--— - ---_X
X X
XX XX
XX
XX XX
XX XX
XX XX
BY LESS
BY MORE
XX XX
XX X
- XX ——-— -
XX
(1
- - XX
XX
a
-—XX ---
XX
XX XX
U- --
- — —- X -- — X -
XX XX XX
XX XX
XX XX -XX
XX
XX XX
--0 -
0 0
XX
X XX
XX
XX XX
XX XX
THAN 15%
THAN 15% &
8S%
TABlE 14. TABLE OF STATIONS WHERE ATEP OIIALITY CONCENTRATIONS EXC€.EDS CRITERIA.
JAN FEB WAR APR MAY
It O —X XX
XX XX Ii
XX XX XX X (1
XXX XX XX XX
3111 1
XX
XX
— XX
JUL
-X
XX
XX
XX -
AuG
X
XX
XX
XX
0
X X
-— 0 0--
0 X
OCT
X
XX
XX
XX -
0
X
XX
XX
X
X
0
XX
XX
XX
XX
XX
———-XX—
-XX--
—X
- - XX
-
X
0
X
0
(1
IJOV DEC 1JO
(I(1-.
0 LI
9
XX 11
XX 10
12
X 10
II
X X 10
XX XX 9
XX 9
o x 1’ II
XX 10
XX 7
16
XX 11
15
XX 10
16
——---XX—-——X-——--X— —-X -----X- —-X- -
XX
XX XX XX XX XX
XXX ——X - — XX —
X X X X XX
XX XX XX XX
XX XX—XXXXXXXX
XX-X XX
XX XX
XX XX XX
— XXXX -
XX XX
XX XX XX
-- XX XX - XX— — -
70301 PISS SOb
— —
PEAR P FIR CrIPINNE
COLORADO RIVER NEAR CISCO UTAH
COT ORADO RIVER AT HIGHWAY BRIDGE NRMOAB
COLORADO P ABOVE HILL CREEK NEAR NOAB lIT X
COlORADo R AT LETS FERRY, AZ. 0 0 X X X
VIRGIN R AT BbrrnMINr.Tor1; IIT ——- -Xx — -- -- —-- —XX -
VIRGIN P AT LITTLFFIEI .D. AZ XX XX XX
PARIA P. AT WHITE 14011SF RUINS NP GLEN CA XX XX XX
SAN JUAN RIVER AT SHIPROC NM 00
SAN JUAN RIVER NEAR BLUFF, UTAH X XX
MUDDY CR AT DELTA MINE NP HANKSVILLF, UT XX XX
MUDDY CREEK AT P 10 1 1TH MR HANKSVILLE, lIT; XX
GREEN RIVER NEAR GRFF.NDALE, (ITAH 0 0 0
GREEN RIVER NEAR JENSEN, UTAH 0
GREENRTVER AT-GREFNIVERUTAH 0X -X —
SAN RAFAEL P AT SAN R BR CAMPGROUND HR C
SAN RAFAEL RIVER NFAR GREEN RIVER, UTAH
FERRON CREEK REL PARADISE RANCH NRCLAWS
PRICE RIVER AT W000SIDE, UTAH
GRASSY TRAIL CREEK AT SUNNYSIDE. UTAH
WIllIE P NP WATSON UT - - - -- — —-
WHITE RIVER AT MOUTH NEAR OURAY UTAH
BITTER CR AT MOUTH HR BONANZA UT XX
X 0 0 XX XX
X X
-— —— - ----- -
0
X 0 0
—- XX XX XX
XX XX XX
XX XX XX
- - ----- - - 0
XX XX
X
XX
0
XX
X
XX XX—— XX
X
XX -- - — --- -— -
X
XX XX XX X XX XX
XX XX XX XX XX
XX—XX-XX XX — — --XXXX
XX XX XX X XX
XX XX XX X XX
0-- —--X--- -- - -
X
HELL’S HOLE CAN AT MOUTH NM WATSONUT —
DIICIIESNE RIVER FJF’AR RANDLETT. UTAH XX X X X X
HENRYS FORK HR MANILA, UT XX X X X XX
DOLORES RIVER NEAR CISCO.UT, - - -- XX - XX — - —
JORDAN RIVER P 5900 SO MURRAY UTAH XX XX XX X XX XX
LEGENDI 0— EXCEEDS CHITERIA
- - - -- X— EXCEEDS CRITERIA
XX— EXCEEDS CI4ITERIA
X II L00
X 10 0 80
6 - - 0.67
6 0.67
Ii 11 1.00
9 -0.79
XX 11 0.91
9 1.00
12 0.42
10 0.60
6 1.00
5 1.00
11 0.27
1 0.09
X 10 0.70
XX 11 1.00
XX 10 1.00
XX 17 - 0.92
P 1.00
XX Ii 0.73
7 - fl•43
X 1) 13 0.69
5 1.00
I — 1.00
XX XX 11 1q00
II 0.91
XX XX IN 0.78
14 1.00
0
XX
X
BY MORE THAN
lESS ThAN 93%
-------
ni. 14. TARIF: OF STATIONS WHF.RE WATER QUALITY CONCENTRATIONS EXCF.F.DS CRITERIA.
00095 CNDIPCTVY
- ——- —-- --—-——---_—-—— ---———--—--— ——----- - -
RP AP RIVER AP1VE KESERVOIR NEAR WOODRuFF XX XX XX XX XX XX
PEAR R AT BORDER WY XX XX XX XX XX XX
- HF RRNRCORINN! - XX XX—XX -XX -- XX XX - XX
COlORADO RIVER NEAR CISCO UTAH XX XX XX XX
COt,DRAD() RIVER AT HIC.HWAY BRIDGE NR HOAR XX XX XX XX XX XX XX
COlORADO B AROVE MTl 1 L CREEK NEAR MOARUT XX — XX XX XX XX XXXX
COlORADO P AT t,EES FERRY. AZ. XX XX XX XX XX XX
VJRC.IN P. AT RLOI1MINGTON,UT XX XX XX XX XX
VIRGIN R AT LITTLEFIELD. AZ — - -- — XXXXXX XX XX XX —
PAPIA P. AT WHITE HOUSE RUINS HR GLEN CA XX XX XX XX XX XX
SAN JUAN RIVER AT 5HIPROCK , NM XX XX XX XX XX XX
SAN JIIAI1 RIVER—NEAR BLUFF. UTAH --— — —-—- ———xx—-xx -—xx - XX - - --
DIRTY DEVIL P AR POISON SR WA HR XX XX XX XX
HUF)I)Y CR AT DELTA NINE HR HANHSVILLE. lIT XX XX XX XX XX
WOODY CREEK ATNO(ITR HR RANKSVILLE UT — - —XX - XX- XX XX
GREEN RIVER NEAR GREENDALE. UTAH XX XX XX XX XX XX
GREEN RIVER NEAR JENSEN, UTAH XX XX XX XX XX XX
GREEN RIVER AT GREEN RIVER. UTAH - -- XX XX —XX XX
SAN RAFAEL K AT SAN P BR CAMPGROUND HR C XX XX XX XX
GAN RAFAFJ, RIVER NEAR GREEN RIVER, UTAH XX XX XX XX
FEPPONCREFX BEE. PARADISE RANCH NRCLAWS XXXX -XX XX XX-
HUNTINGTON CREEK NEAR HUNTINGTON, UTAH XX XX XX XX XX XX
COTTONWOOD CR,ARV STR.CANYUN.NR ORANGEVI XX
COTTON WOflD CREFK NFAROPANGEVILLET UTAWXXXX XXXX XX XX
PRICE RIVER AT W000SIDE, UTAH XX XX XX XX
GRASSY TRAIL CREEK AT SUNNYSIDE. UTAH XX XX XX XX XX XX
WHITE R HR WATSON lIT - — — - - — - — XX - XX — XX XX — XX
WHiTE RIVER AT MOUTH NEAR OURAY UTAH XX XX XX XX XX XX
HITTER CR AT MOUTH NP BONANZA lIT XX XX XX XX XX
HEI,lj’SHOLE CANATMOUTIINRWATSONUT XX - - -
DIICIIESNE RIVER KFAR RANDLETT, UTAH XX XX XX XX XX XX
STRAWBERRY RIVER NEAR DUCHESNE. XX XX XX XX XX XX XX
IIFT RYS FORK MR NAIITLII, UT - XXXX XX XX —1X 1X —XX
MILL CR NP HOAR uTAH XX XX XX XX XX XX XX
DOLORES RIVI .R NLAP CISC(I,UT. XX XX XX XX XX XX
,JOROAN RIVER P 3800 SO MURRAY UTAH - - XX XXXX XXXX XX - XX
JORDAN RTVEP 0 3700 SOUTH P SALT LAKE CI XX XX XX XX XX XX XX
.JORI)AN RIVER P CUDAHY LANE HR SALT LAKE XX XX XX XX XX XX XX
SEVIER RTVER BELOW PIUTE DAMP1RMART3VAtT—XX XX XX-— XX—XX——XX
S .VIEK RIVER NEAR I.YNNDYL, UTAH XX XX XX XX XX
WEHF’R RIV AT GATEWAY uTAH XX XX XX XX XX XX XX
MEDF.R RIVER HR PLAIN CITY uTAH - XX -XX - - XX - XX - - XX - - XX
JORDAN RIVER 0 5800 SO MuRRAY UTAH XX XX XX XX XX XX XX
LEGEND: 0— EXCE .DS CRITERIA BY
-- - X’ EXCEEDS CRITERIA BY
XX- EXCEEDS CRITERIA BY
AUG SEP OCT NOV DF.C HI)•
flhI ,
XX XX XX 11
XX XX 11
XX XX XX XX 10
-XX XX -XX-- -- :4
EXCEEDENCE
PR OIiABX I,ITY
0.91
0 • 92
1 • 00
JAN FEB MAR
APR
MAY JUN
JORDAN
RIVER A 3700 snirrul P SALT LAKE CI-—— XX — -XX——XX---—-X
-- --—--- x-
XX
JORDAN
RIVER p CIIDAHY LANE
HR SALT LAKE
XX XX K
X
X K
XX
SFVIFR
RIVER NEAR lYNNOYL,.
UTAH
XX XX
XX
XX
XX
JOPDANRTVEP 8 5800 80 MURRAY
uTAh -- - —XX-XXXX
X- XX - -XX--
XX
XX XX XX XX
XX XX XX XX
XX- XX- -- XX
XX XX
XX XX
-XX - - XX—- XX
XX XX
XX XX
XX - XX —-- - -
XX XX
XX XX XX
XX - XX
XX
—XX -
XX
XX XX
XX XX
XX XX
XX XX
XX -- -
XX
XX
XX -- —-
XX
XX XX
XX-—— -
XX XX
XX
XX
XX
XX
• --XX --
XX
XX
XX XX
XX XX
—--XX -
XX XX
XX
—-XX- XX
XX XX
XX XX
XX XX —
XX
XX XX
XX - -
XX XX
XX
XX
XX
XX
XX
XX
7X -
• XX
XX
XX
‘ -K
- --XX
XX
XX
-XX -
XX
XX
XX 1% 1.0()
XX 20 1.00
XX 16 1.00
XX 10 1.00
38 3,00
- XX 21 —-1;00
XX 30 1.00
q 1,00
XX - 11 t -.00-
10 1.00
XX 32 1.00
XX 10 1,00
3 1.00
F l 1.00
3 1;00
XX 11 1.00
XX 1? 1.00
XX 10 - 3.00
XX 11 1.00
XX 10 1 O0
XX 12 - 1.00
XX 12 3.00
6 1.00
XX 12 - 1.00
XX 10 3.00
XX 12 1.00
7 t•00
XX 13 1.00
6 1.00
1 I.A0
XX 11 3.00
10 1,00
- 12 -- 1.00
II 3.00
XX 19 1,00
XX 18 1,00
XX 31 1.00
15 1.00
XX ID - - 3.00
XX 10 1,00
XX 12 1.00
XX 13 3.00
XX 18 1.00
XX
XX
XX
XX
XX
- XX -
XX
XX
XX
XX
XX
LESS
MORE
MORE
XX XX XX
XX
— XX XX
XX
XX XX XX
—XX - XX
XX XX
XX
-—XX XX
XX XX
XX
- XX- XX -
XX XX
THAN 15%
THAN 15%& lESS THAN H %
THAN 85%
-------
TABLE 14. lADLE OF STATIONS WHERE WATER OUJALITY CONCF.NTRATIUNS EXCEEDS CRITFNIA.
JAN FEB MAR APH MAY JUN JIlL AUG S P rJ T NOV IWC
00070 TURN
Slit * 5 * 5* * *5 * * * St
BEAR R AT BORDER WT — - —XX— - — -- -
VIRGIN P• AT Ht,00MINGTON.IJT XX XX XX
VIRGIN N AT LITTliEF Ei,D, AZ XX XX XX XX XX
PARIA R; AT WHITE HOUSE R1ltNS-NRGT,EN-CA— XX—XX - XX - XX — - -—--—- - - -
00530 RF.SII)IPE
_____________ — —- — -- - --- -- - -
COLORADO RIVER AT HIGHWAY BRIDGE HR MOAN XX XX XX XX
COLORADO P ABOVE MIlL CREEK NEAR MOAN UT XX XX XX XX
SAN JIJAN-RIVER A1 SHIPROCK;:EM —— XX XXXX —-XX-X - I) -- 0-- XX - XX
SAN RAFAEL RIVER NEAR GREEN-RIV1 R, UTAH XX XX X
PRTC RIVER AT WimOSIDE, UTAH XX XX XX
WHTTE RIVER AT MOUTH-NEAR OURAYtITAH —- - — - - -- —— -X
NICHESPIE RIVER NEAR RANI)IIETT. UTAH X XX XX
IORDAPI RIVER 9 SBOO SO MURRAY UTAH X
JORDAN RTVFR9CI IOAHYLANE-NRSALT LAKE - -—X—— —-
JORDAN RIVER P 5800 SO MURRAY UTAH X
7029 RFS SIJSP —- - -- _____ - - - - -
*i***S*****St*Sts
WHITE RIVER AT MDIJTII NEAR OURAY UTAH XX
80154 SUSP SEll
REAR RATRORDFR WY —- — -- X - -
DEAR P MR CORINHE X XX X X XX XX XX
CCII.ORADO RIVER NEAR CISCO UTAH XX XX XX XX XX XX
COLORADO P AT LEES FERPY;AZ — —— X—————-X - -
VIRGIN P. AT BL .DOMIIIGTON,UT XX XX XX X XX X XX
VIRGIN P AT i,LTTLEFIEL.D, AZ XX XX XX 0 0 XX
PARIA R; AT WHTTE HOUSE RUINS -NP G1 ,EN -CA--—- XX XX XX — XX XX — - XX - - -
SAN JUAII RIVER AT SHIPROCK, NM XX XX XX XX XX XX XX XX XX XX XX XX
SAN JUAN RIVER hEAP BluFF, UTAH XX XX XX XX XX XX XX
MUDDYCPATDELTAMINENRI IANKSVTIJLEr1JT ———XXXXXX -— X
MUDDY CREEK AT IIOUTII HR HANKSVILLE, UT, XX XX XX XX XX
GREEPI RIVER NEAR JENSEN, UTAH XX XX XX XX
C,RF.EN RIVER AT GREF.N RIVER, -UTAH XXXXXX -— XX XX XX - —- X XX - X - - -
SAN RAFAEL P AT SAN P PR CAMPGROUND NP C XX XX XX X X
SAN RAFAEl, RIVER NEAR GREEN RIVER, UTAH XX XX XX X XX
FFRR IN CREEK RFT PARADISE RANCH NR CLAWS - - - 0 -X XX
HIJNTINC.TON CREEK NEAR HUNTINC,TON. uTAH X XX X X
COTTONWOOD CR FK hEAP DRANGEVILLE, UTAH XX XX
PRICE RIVER AT W000SIDE, UTAH -- XXXX XX XX -— XX -- - -
WHITE P NP WATSON UT XX
WHITE RiVER AT MOUTH NEAR nURAY uTAH XX XX XX XX XX XX XX
HFIL,’S HOLE CAM AT MOUTH NR WATSON UT —- - XX -- — - - - --
DIJCHESNE RIVER NEAR RANDLFTT, UTAH XX XX X
LEGENDI 0- EXCEEDS CRITERTA BY LESS THAN 15%
- -- - X• EXCEEDS CRITERIA BY NflPE THAN 15% & I.r8S THAN
XX— EXCEEDS CRITERIA NY MORE THAN 85%
P 1 1. EXCFVDF ‘ICE.
OI lS PR(IIIAb LillY
1?
S
A
4
0 .25
0.60
0.83
I • 00
8
30 0.50
I I - -—0,82
30 fl 50
o.so
7 - 0,50
0.30
F l 0.32
15 - - 0.13
I i 0.12
3 0,33
12 -0,17-
9 0.89
11 0,8?
17 ( 1.24
7 1,00
6 1.00
A 1.00
19 1.00
17 0.97
4 -- 1;0O
‘1 3.00
4 1.00
13 0,9?
5 1,00
H 0 ,BR
S - 0.60
9 0.44
S 0,40
8 0.88
2 0.50
23 0.91
1 1.00
6 0,50
85%
-------
TAPI.E 14. TAI3L.F OF STA IONS WI ’RE WATFR QUALITY CONCf.NTRAT3OI S E.XCEEOS CR! 1FRT! .
0060R NH3+MH4—
•es*s i i i * 5* 5 5* 5 5*
XX
XX
X
()
n
-o
Ii 0.45
9 0.61
x ii 0.64
6 0.33
5 0,60
5 0.60
xx q 0 74
X 17 0•59
n 10 1.00
11 17 0.59
x ( I 10
8
10
11
9
XX Ii
In
12
10
6
5
11
0 10
XX 11
XX 9
Xx 12
8
Xx 17
7
13
5
XX 11
10
XX XX l B
X 17
X X II
15
10
X 17
0.50
0 • 36
(1 • 50
0.64
(1.76
0.62
1 • 00
0.17
0.50
1.00
1,00
0 0
0,40
I • 00
1 • 00
0.92
1.00
0.67
0.14
A • 08
1 • 00
0.91
1.00
O ,67
o.q4
0.73
0,41
0 • 70
0.94
Ill ( till.
I ll ’S
3
7
B
FXCFF D MCI’
P ROB A B IL .! 11’
1.00
0.43
0 .63
C.,,
JAN EFB MAR APR MAY .11tH JUt AUG P OCT NOV
OOLOPFS RIVFR PJI’AR CISCO.l’T. — XX X
JORDAN RIVER 9 1700 .5011TH 2 SALT I.AKF CI 0 X XX
SEVTFRPTVF-R PJFAP LYMIJOYL, UTAH X X XX X
00940 CHlORIDE
S * 5 5 555 * 5*5* 54 5 55
REAR RNR CORTNIJE -— — —------—- - XX XX XX XX
VIRGIN P. AT R1,OllPAINr,TON,tIT 0 x xx xx xx x
VIRGIN P AT L.ITTLEFIFI,fl, AZ X X X X X X
P*UOOY —CR—AT-0FT,TA--HIP1r-NP -IIANVSVTLTrUT X - —— - - -
MUDDY CPFFK AT MOUTH NP HANKSVII LE. UT. xx X 0
BITTER CR AT MOUTH MR P0NANZA UT 0 0
DOLORFS RIVER NEAR CISCO.UT;- - XX—XX- - — XX XX - XX - XX
JORDAN HIVFP 9 5800 50 MURRAY uTAH X 0 0 X X X
SEVIER RIVER IJFAR LYUUDYL., UTAH X XX X 0 0 ft X
JORDAN RIVER 6 5600 . 50 MURRAY 11TAfl X- - 0— 0 - X - - X — x —
00945 SULFATE
s*s*S*s***.*sss** — -——-- - —-—-- — — -- - --
COLORAOII RIVF.R MFAR CISCO UTAH I) X
COIMPADO R!VFR AT HIGHWAY BRIDGE MR MOAB (1 XX
CflI,DRADfl H ABOVE MTLL CREEK NEAR HOAR 1 1T —— 0 -- — X - - - - X - -- X
COLORADO P AT LEES FERRY. AZ. 0 0 0 0 0 0 0
VIRC,IN P. AT BL .OOMINGTON.UT XX X XX XX XX XX XX
VIPGIN P AT t.TTII .EFIEL .O, AZ -- - — - - XX - XX X - — XX XX XX XX - XX
PAPIA P. AT WHITE HOUSE RUINS MR GLEN CA XX XX XX XX XX XX XX XX XX XX
SAN JUAN RIVER AT SHIPROCK, NM 0 0
SAN .JUANRIVFR NEAR BLUFF; I!TAH —X X -- - X
MUDDY CR AT DELTA MINE. HR HANICSVILLF, LIT XX XX XX X XX XX
M(IDDY CREEK AT MOUTH NP HANKSVII .LE, UT, XX XX XX XX XX
GREEN RIVF R NEAR GREENflAI 1 F ttTAH -- —- —-
GREEN RIVER AT GREEN RIVER, UTAH X 0 0
SAN RAFAEL. R AT SAN R HR CAMPGROUND NP C XX XX XX X XX XX XX XX XX
SAN RAFAEL RTVER NEFR C,REE.N RIVER, UTAH-—— XX- —---XX--— XX—- XX - -- XX —- —-- xx ------— XX
FEPRON CRFFK BIt. PARADISE RANCH NP CLAWS XX XX XX XX XX XX XX XX XX
PRICE RIVER AT WOIJOSIDE, UTAH XX XX XX X XX XX
GRASSTTRATTICRPEX -AT SUNNYSIDE UTAH XXXXXX — —- X- XX-- 0 XX
WHITE P NP WATSON UT X
WHITE RIVER AT MOUTH NEAR OURAY UTAH 0
BITTER CR AT MOUTH PIP BONANZA UT —- -— XX——XX - XX-——-- ——- — -XX— — -- —- —- —XX- — -
DUCUESNE RIVER NEAR RANDIJETT. UTAH XX X X X X XX X XX XX
HENRYS FORK NP MANILA, UT XX X X X XX 0 XX XX XX
DOLORES RIVER HEAR CTSCO.IJT. — - - X -- XX -- —- X XX XX
JORDAN RIVER 0 SROO 50 MURRAY UTAH X 0 0 0 X X X X X X
JORDAN RIVER 6 1100 SOUTH P SALT LAKE CI X 0 0 X X
JOPDAN RTVF.R B CUDAHY LANE NRSALT IJAKEX — —O -- X - - X - -
SEVIFP RIVER NEAR LYNPIDYL, UTAH X XX X 0 0 0 X
JORDAN RIVER 8 5800 50 MURRAY UTAH X 0 0 0 X X X X X X
LEGEND! 0
LESS THAN R %
X
F.XCP’LI)S
CHITERIA
BY
THAN
C
—4
-------
TABLE i4, TABLE OF STATIONS WHLRE WATER QUALITY CONCENTRATIONS EXCEEDS CRITERIA.
JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV
0• •SS
flO1 ORES RIVER NEARCISCO UT. XX
JORDAN RIVER P 1700 SOUTH P SALT LAKE CI X XX
01034 CHROMTUM - —
** S $ 5 * *5* * * 5* * *
SAN JUAN RIVER AT SHIPPOCK. NM X
01147 SELENIUM
FAPIA N. AT WMITF HrjI1SFRiJINS NR GLENCA O—-- — - - - -
71900 MERCURY
- -- —- — -_- - - -—
BEAR P NP COPINNE XX
COLOPADO P AT LEES FERRY, AZ, xx
VIRGIN R AT-BLOOMINr,TON;UT- - - - -_-XX—--—--——--- - -
VIRGIN P AT LITTLEFIELD, AZ XX
PARIA P. AT WHITE HOUSE RUINS NR GLEN CA XX
SAN JUANRIVEP NEAR RLUFFTUTAt4 —-———- O— - - ---— —-- —- - - — - -
PRICE RIVER AT WfltJD IDE, UTAH XX
WHITE RIVER AT PIOUTH NEAR OURAY UTAH XX XX
D 0L DRES-RTVERPIEARCISCO;UT. — — —--—— - — -——-—--—--- xx — - -- — —- —
JORDAN RIVER P 1700 SO(ITH P SALT LAKE CI XX XX XX XX
SEVIER RIVER NEAR lYPINDYL, UTAH XX
WERFR RIVER MR PLAIN CITYIITAW ——--——XX--— —- - -
01042 COPPER
— — -- -————-_---- -—-——.—— --—-—--—— —- -_ -—- —— - --——— ——— --. -- --—————— -
SAtE JUAN RIVER AT SHIPROCK, NM XX XX
WHITE RIVER AT MOUTH HEAR OUPAY UTAH 0
WEBER RIVER-NP -PLAINCTTY—tJTAK—— -— -—— —XX——------- —
01092 ZINC
— — — --_ - — - -—--—-- - —---- —-——-- - - — - - - — -—— - - - — -- - -- -- - — ——— --- - — -
SAN JUAN RIVER AT SHTPROCK. NM XX X
WFBER RIVER HR PlAIN CITY UTAH X
PROCESSING COMPLETE FUR REQUESTED PERIOD
DEC Nfl, EXCF DENCF
(iNS PROBABILITY
XX 2 - 1.00
XX 4 1.00
4 0,25
1 1,00
5 0,20
3 0.33
2— 0.50
2 0.50
2 0.50
4 - - fl 25
1,00
4 0.50
3 - - 0,33
5 0,80
3 0.33
S — --0,20
4 0.50
4 0.25
S - -0.20
4 0,50
5 0.20
-------
Table 15.
Water Quality Trend Table
U TA 11
Stations and Parameters where Significant Statistical Differences were Observed. -
Legend: I Improving Trend; 0 Degrading Trend; * = Parameter concentrations are at high levels.
Station
a
I..
a
.V
c
V
01
0
t
Z
V I
0
.C
0.
U I
0.
a
.
0
v,
.
>
0
fl
n
A I
.
0
v,
0
a a
VI V
— -
V I..
0. Q • 0
U) IJ
—
u
-
IJ
V I
UI
V
o
VI
a
X
Bear R abv Reservoir or Woodruff
D *
Bear R at Border, WY
D
I
BearRatCorinne
D
-—______
a a
Zb .Zi
Colorado R or Cisco
I
I *
a
I I Pb
-Cd - -
Colorado L or Moab
Colorado R at Lees Party, AZ
0 *
D
a
I
Virgin R at Bloonington
-—
a
D *
I
- --
D 0
Paria a or Glen Canyon Reservoir
San Juan R or Bluff
-
-
a
Pb
—-Cd-
Muddy Cr or lianksville
*
*
*
Green a or Greendale
a I
- ———
*
-
-
—
0
Pb
-- -
Green R at Green River
a
—
D
Pb
antington Cr or B.antington
I
Pb
Cottonwood Cr or Orangeville
a
Price R at Woodside
a
Pb
- Grassy Trail Cr at Suonyside
White R or Ouray
0
‘
D
Bitter Cr or Bonanza
— —
— —
I
Jordan R at 1700 S, SLC
,
1
Zn
Jordan R at Cudahy Lane, &.C
*
I
Sevier R or Mar7sva.Le
I
Sevier ft or Lyondyl
“ “
Iii__
*
D
107
-------
i V ’ (‘ , ? J(.
Table 16. Ranking of Critical Water Quality Stations by Pollutant Group
No. Avg.
Exceed. l bs. Coric .
Fecal Coliform Prob. Exc’d mg/i
1. Bitter Cr nr Kanda 1.00 9 100000+
2. Killpecker Cr at Rock
Springs 0.88 6 100000+
3. Goose Cr b lw Sheridan 1.00 i i 62636
4. Hams Fork nr Diamondville 0.67 7 4375
5. Bighorn at Lucerne 0.33 3 3824
Phosphorus
1. K llipecker Cr at Rock
Springs 1.00 7 2.82
2. Bitter Cr nr Kanda 0.89 7 2.71
3. Salt Wells Cr nr Salt
Wells 1.00 3 1.36
4. Goose Cr blw Sheridan 0.91 10 0.42
5. Whistle Cr nr Garland 1.00 2 1.29
6. Shoshone R nr Lovell 0.89 7 0.30
7. B Itter Cr nr Salt Wells 1.00 2 0.54
Dissolved Solids
1. Salt Cr nr Sussex 1.00 11 4274
2. Beaver Cr nr Newcastle 1.00 11 3430
3. Bitter Cr nr Salt Wells 1.00 10 3671
4. Big Sandy R nr Eden 1.00 12 2721
5. Cheyenne R nr R lverview 1.00 10 3240
6. Casper Cr at Casper 1.00 10 3040
7. Little Powder R nr Weston 1.00 11 2743
8. Belle Fourche R nr Piney 1.00 11 2728
9. Powder R - Sussex to
Arvada 1.00 12 1954
10. Blacks Fork nr Lyman 1.00 10 1992
Suspended Sediments
1. Salt Wells Cr nr Salt
Wells 1.00 6 11070
2. Blacks Fork nr Lyman 0.93 10 1094
3. Powder R at Sussex 1.00 10 1547
108
-------
V ‘
Table 16 (Continued).
Ranking of Critical Water Quality Stations
by Pollutant Group
Suspended
Sediments
Medicine Bow R nr Hanna
Exceed.
Prob.
1.00
No.
Mos.
Exc’d
12
Avg.
Conc.
mg/i
425
4.
5.
Belle Fourche R biw Moorcroft
1.00
11
408
6.
Little Powder R nr Weston
1.00
10
421
7.
Salt Cr nr Sussex
1.00
11
861
8.
Nowood Cr nr Tensleep
0.92
9
352
9.
Bitter Cr nr Bitter Cr
0.94
10
1194
10.
Shoshone R nr Lovell
1.00
9
214
109
-------
TARi,F 17 TAhil,E liE ’ cIATIOMS WHERE WATFR QUALITY CONCEMTPATIOt1 ’ FXCEFI)S CHITFPIA.
TAM FFH MAP A N NAY JUN .10 1 . A’IG
Sl OCT plOy
I)FC ‘lfl, EYCVF 19 11cr
oi c PRh IflAflhI Pry
5s* st s sss s s
NORTH P lATTE RTVFR ev, CASPFR no
V POIIOFR RTVFR AR flHY C lip WFSTON. WY
c’v.rAn C PT, ROCK r HR H II V WA I 0 WV
CRAZY WOMAN CRFEK SIT IJPPFR STA. NEAR APV
cAT,’r CPEFK NFAP ctic rx. Wyn.
SOUTH FORK P W ER P. NP. KAYCIF. WYO.
‘7 ( l i4
12
I 1 .1 , 10
in n.ll)
in n i
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4 ( ‘ l7
xx xi ix ii - - i,no
xx 3 9 f,.vI
- I ?
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19
xx xx ii •l fl
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7 7 ( ‘.14
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CRTTWRTA fly “i RE
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vic,iPECKFR CPF K At POCK SPRTNCS WYO
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SOUTH FORK P OWOFP P . MR. KAYCFF. WYO.
r,00sF CPtFK n,:,,ow SHFWIOAN WYO xx xx xx xx
RI(’,HORN RIVER T i,iICFR IF. WY O.
C.RFFN RIVFP rv.ow r,RFVT R IVFP WYS1
HAMS FOP’( NEAR OTAMONDVIT,l,F W xx xx xx
MTTHS FORK MFSIR I,VMAN. WY
RITT R CR PET T.TTTVE BITTER CR NP KANOSI xx xx xx xx
KIT,T,PECKFR CPFFK At PO(’K SPRIN CS WYO xx xx xx
‘MIRTH Pl ATTE RTVFR ST CASPFR no xx xx
T.APAUTF RIVER AT HOWE’ !, !, • WY x
31501 tot roy.j
xx o xx
0
x
xx
x
x xx
‘I
xx
xx xx xx xx
x xx
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xx xx xx
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x x xx 21 ( 8
xx
0 06fl0 TOTA l. U
*5 * 5* * 5 5 * * 5 5 5* 5 5 5
CI IFVFiI”P. RTVFR NP PIT/ERVIEW WY
PITTE’R CP PET. lItTlE RITTEP CR NP KANDA x
K !! I.PFrKFR CPFFK At POCK SPRTNCS WYO
( ‘(‘ SF’S 19505-TOT
s****ss***s*s*st*
CHFyFHPl RTVFP NP 015 !. !. CFNTFP WY
CHFYFNME RTVFR HP PIVFPVTEW W xx
RFAVFH CRFFK NFAR ‘iFWCASTLF. no. xx n x xx
n .u ,r nui ritr RIVER n .v.ow MonRCROrT. WYO xx n x x xx xx
PET,L.F FOIIRCHF RIVER AT OFVTIJS TOWER WYO xx - - - - - - -
POWDFR RTVE’R NFAP VAYCFE. Wyn x x xx x xx
POWI)FR RTVFR At SUS5F . WY O. x xx xx xx xx xx x xx x
POWDE’R P At ARVAPA WV I) x xx xx - xx x xx xx x x
I, PO’flIFP P flE’ COPRI I II C NP I4EcTON wv x x x
I, p pWr rp H NP WESTON WV x x
(‘•15
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xx
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xx —
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TARIF 17. TARYF 1W STATTU ’S WUEPE WATFR ( II4T ITY CC’ 1CE ’TPAT1nUc FXCFFI)c CPTIVRTA.
XX XX XX XX
XX — — XX — XX
XX XX
XX
—- - -
XX X V XX XX
XX i i
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XX XX 1 7
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RI (HflR ’ P AT WART AMP WYIl XV XX X X
TCHflR P AT KANF wyo V XX X X XX
SIIfl1) ”F RTVFR NFL .flW P” .”ATfl BTI,t. RESERV 0
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SA(F C AT Sjr )OM ( ‘A M A!, “P DFAVFR Wyn XX XX X
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1TTFR CPF K NFAP C.AflI,APIfl WYA XX XX XX XX XX XX n
‘NFl ,!. C MR GTWYBI’Lt, • WY ! ) XX V X
GPFVN”tT. Rt’IFD P’FAR RASTN. WYP. X YX
PIflWflflD P NP TE ”ST,EFP. WY ______ XX XX
PATNTRACK (‘RFI.K ‘PEAR 141) 1 1TH RFL1)W HYATTVI —— -
UflWOAI) P AT P4ANI)FRSfl I. WYO XX XX XV
W )fl RTVFR NFAP PIJROTS. WYP. V
‘4iI ’l) P AT PIVFPTAN. WY x
WJNfl PTVFP AR RDYSFN R!’ MR SHPSHPNI WY X XX X XX
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t,ITTT ,E WTNP P P1K RTV !’RTON Wyn X XX x x
PFAVFR CPFFP( NP ARAPAF4AE WYP) XX XX
lITTlE WIND P APOV ARAPAHAE. Wyfl. X
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( RFFM P. NP C.RFEW PI”EP. WV ) ).
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lITTlE SNAKE RIV R TWAQ A((’.S. W XX XX XX XX XX
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hAT’S FORK “EAR GPA’IGFR. WYn. 0 XX V XX
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PI1’T R C D PET I,ITTT,F RTTTER CR NP KAP’OA XX XX
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TAPI,r 17’. TART A O E STATTO”S WHERE WATER (J I IAT jT CflrICE’4TRATI ONS FXCEC’I)c rNTTE TA.
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CHFYENPJI. RTVFR NP PUT. , CENT P WY
REI,T.r ro ,IprI4r PIVER PET,OW WDPRCRDET. NYU
POWDER RIVER AT sussrx. WYD.
X
XX
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XX -
V. D OW nER P SF CI1PPFII, C NP W ESTON WY
XX
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XX
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XX
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XX
0
-
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XX
X
XX
MUPI)Y CRrEK “FAR HAMPI PU WY ) )
XX
XX
SJTTr R CP PET, T,ITTT.E RITTEP CR NP KANDA
XX
XX
KtT,t,PECKER CREEK At P0 )( SPRTNCS WYO
XX
XX
SALT WYT,LS r “R S BAXTER WY
XX
XX
N.)
SAT T W rITS CREEK NEAD SAT T WELTS WY
nttlfraC AR SATT WFLT,S C NP SALT wri,t,S w
PLTTER CPP’EK NEAR ITTER CPF2FK. W In
T,ITTTE SANRY CREEK ARfl”T EDFN. NYU.
—
X
-- X — -
XX XX
X XX
XX
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XX
0
CASPER C AT ASPFR NYc) C )
7fl3Afl PE’.cznhIr - — - — - - — - - — - - -
CHFYEN’IE RIVER NP RUt.!, CFNT P WV XX XX XX
PnWDrp RIVER AT SUSsEX. WY O. ‘ - - Y XXXX XX XX XX XX XX XX - XX - XX
V. POWDER P BE COPRA I. C NP WESTON WY XX XX XX XX XX XX XX
V. POWDER P NP WESTON WY XX XX XX XX TX XX XX XX YX XX XX
V. P(1WI)ER RIVEP A DRY C UP WESTON. WY XX XX XX
CRAZY WOT IA’) CREEK AT uPPER STA. NEAR APV XX XX XX XX X X XX XX XX XX XX . XX
“ UPTI I P lATTE RIVER BT CASPER WVO 0 13 X
SWFPTWATER RIVER NEAR AIICOVA. WYO.
T’Er(TrI Ir I$PW P A SI’RtflOE DES. N MANNA.
T. “EPICINE F lOW R PIP “FRICIPIE ROW NYU
.SACF CREEK NEAT? SATIATOC.A. “YP
SAlT RtVFR AP PFSE°VfllR “P ETNA wj — -
.1AN FEB ‘ lAP APR AY J”N TOT. ADG SEP OCT
X
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CHEYENNE RIVER NP DUT.T. CENTEP WY -
C hEYENNE RIVER NP PIVT.PVTEW WY
PrAyER CPFEK NEAR NEWCASTLE. WVU.
PIT.Lr EIIIIRCHE P I, RATTLESNAKF C NP PI’TE
PErLE EO, ,P HE P AR DRY C PIP PINEY WY
PFT,LE rwppr r PJVEP RET,flW MOONCROFT. WY))
RET,T,E EOIIPC TIE PIVER AT DEVIlS TOW EP R IO
P IJWI)ER RIVER HEAP KAYCEF. NY c ).
POWDER RIVER AT S uSSEX. WYP.
P(3WflEp P AT ARVAPA WY I)
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-------
TAflI,W 17 TARV.E o w STATIOnS WI4EPE WATFN 01141 JT’( CnNCI.’JFPAT10 S rxnroc CR11 WRTA.
lAM F R MAR APR MAY 1 1’IN .110 AIIG SE nr
XX XX XX XX
XX XX XX XX XX XX XX
XX XX XX XV XX XX
n n
- - X - X X
X XX X X X XX
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X X XX XX XX XX XX
XX XX XX XX XX XX
XX X X
fl
T, now o rN P 5F COPRAL C NP wE’ STON WV XX XX
I. rowI)rw P ND JFSTflN WV XX XX XX
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CI.FAP C Pt, RflCV C MR AtirrAl I I WV n o x
C ,FAP rpc-c. AT IJCNflSS WY XX XX
rt,FAR CWFFX “FAR ARVADA Wyfl XX XX X XX
PI”FV CRFFK AT IJr n5S NY u V X 0
CRA zY WOMAN CpV Y A IIDPFR STA. WEAR ARV X X XX XX XX
AT,T CPi X NFAR cuqsFx • WYn, X X XX XX XX
crjt”rIl FORK PDWflIP P. NP• KAYCFF. WVO. XX XX XX
consr CpFEx PET,IIM SHWRIDAN WYD
RjC-HDR” PIVEP AT LI ICFRMF. WYn.
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.RACF C AT SIN)” CAMAT, tip DFAVFP WY O XX XX XX XX
WHTSTI,F CRFFK “EAR G RT AND WVO XX X XX
PITTFR CPEFK I4FAP (APT,AND WY !) XX XX XX
SHFLT. C ’ “P GPFYRI ILT,. WVO 0 0 XX X
GPFYBIII,T, Pp /ER NEAR BASIN. WY ! ). 0 0 X V
NflI.’flfli)R NP TENST,FFP. WY - - - - n X X
rAINtpnrw CRFEIC NFAR MO uTH RFLOW HYATTVI B X 0
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WIND PtVFRAP PUVSrN Pr tip sMo HDN? W ’ Y
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4 A •75
I,FGFIIflT 0— Fxc FI)c CR ITFR TA BY l. 1 SS 1PIA I I St
X— FX(’ FI)S CI4TTFRTA BY TIOPF T”A ’ 1S £ VFqS TOAl’ P)
cx— Fxr FoS CR 1F A MY ‘ou TIIA ’ Qc
1 IAR APR
XX YX
Xl YX
X V XX
N A V
XX
X
XX
XX
X ‘)
X_ X
XX XX XX YX XX
XX XX XY XX - XX
XX XX
X
X A X
X X X
XX XX XX
XV XX
X XX X
X I XX
X
- XX
O X
X
XX
X
X
XX VT
XX I
I X
X x
I X
TX
X
X
TAN FF14
CRflZV A’flNAP’ CRF .K A IIPPFR STA. P1 AR ADV XX TX
ATT (‘ K NFAP SIISSFX. Wyn• -- -- TX --
O”Tfl FORK PAI( Q A. UP. KAYCFF. ‘iVO.
PI(HAR” RIVF .P AT l,TTCFOPJI. • WYO•
C.flrIpP’ A AT WART A P’O WVI) - -— — - X X
PICITARN fl ‘T K’ I4F W ’ fl V X XX X
H0SItDP’F RTV ’R lWi0w RI’FFAI,U BILl. PFSFRV
SPIOSUOPTE RTVFR NFAP T.1)V1’T t, WY(1 V X fl
A( F C AT cjAii ’ CATIAT, “P UFAVFP WYO XX XX XX VT
WHTSTI,F CPFI K “EAR GART,A’II) NYU XY XX TX
PIT rvp CPI K !WAP C.APT.ftNfl WyO - - — XX X *X
SHFI,f. C “P (PEYII”Ll • WYU A XX X
GP VAulT, PIVF.P P’l .AR BASIN • WYO• X
N()w(ur,o P PIP ¶E ”S?.F ’P • WY X X
PAINTROCI( CRFEK tA.AR MOUTH RFI,rlW HYATTVI A X (1
M014(TUl) P AT MAATDFPSON. MV I I 0 X X
FTVFMTl, ’ CRFFK NF AP STIOSHflPIT. WV’). XX XX XX XX X
T,T’PTT,E WINO A P’M RTVFRTO” WYfl A 0 XX
REAVFR CPFFK NP APAPAHOF wYO - X X
lITTlE WINO P IPBOVC ARAPAHOE. WYO A I) XX
r.RFF.PJ PIVER AT BIG ISIANU. ‘IFAP GRFIN P1
t RF ’ P NP riR Eu RIVER. WYO.
‘ ‘ PIFP PF?.OW (PFE ” PIT’F wyn
‘ 14E ’TRYS FORK N MANTI,A • UT XX X X X XX 0
PI.ACKS FTC PIP LYMAN WVO XI XX XX XX XX
‘ l.ACWS FORK PI”E’l REAR l,TTTI,F AMERICA WY XX XX XX X
UUADY (‘REEK REAR HANPTflN WVO XX X X XX
SMTT IS FORK REAP LYMAN, WY
PJTTFR CP PET. t,1TTL LRTTTE.! NAN XX XX XX
KIY.I ,PECKFR CPFFK AT DOCK SPRTNC.S wYo XX XX
SAI,T WFTI, f’ MR S BAXTER WY XX X
ALT WEI,l S CPF I( REAP SAlT ,dFLd,S wY - X1 XX - - —
PITTER C AR SAlT WF .l.S C IP SAlT WELdS W XX XX XX
flITTER CREEK HEAP flITTER CREEK. W fl X _____ X X
RIr.SAIIUY R1V ,.P l4 1?,I ’TW FOFN wVjI - - —-
RIG SANflY P AT GAcSON APIOGE. NP EDEN. XX XX XX XX
u flp p P1 ,ATTE RIVER p l , CASPER WYO a
1 PLATTE P NP r.LFNDOCK WVO • a X
NOPYM PL.ITTTE R. AT OQIN WY’). x
RflP)H PI,ATTE RIVER BEI,flW GlENDA RES .PVAI A
I,ADAMIE RIVER AT HOWFI,T, • WY
LAPAMTF RTVFP AT TWO RIVERS, wyn.
MEOICINE lION P Afl SIMIMOF PE.S. NP ‘4A ”NA. I TX X X
¶, R ’n CpI . ROW P NP MEAICIPIE ROW WYO X
SAC.,.: CI FFK NEAR SAPATOr.A • W I O XX X
X
X
XX XX
X
XX XX
X
X
XX XX XX
XX XX Xx
-— XX - I XX -
XX XX XX
XX XX XX
XX XX XY XX
XX XX XX TX
X XX X
XX
XX
X
TX
XX
X X
X X
XX XX
X XX XX
X XX VT
XX (
X X
XX - TX
V X
XX XX
II
-- I? -
17 O • 13
XX XX 17 fl A3
XX XX II
A A •PII
-------
t nir it T”RT v rw cI’ATTUNS WWER€ wnER l ’Av ,zTY C0,ICEHTRATIP IJS EXCPYF)S CRTTFWTA.
- lAps FrH - A4 APR MAY liN lii i , — AU G SF P (srp “siV DFC “ Ii.
n c
01042 ropprp
- — — - - - - - - - — — —- —
Pf1WI)Vu R IV EN At c(ISSFX. N Y u. TX
L P0WUFP p uø M TflN WV XX 1
rRAzV MURAlS CREEK fli uPPER STA. MEAN ADV TX ‘1
AjT Wvy ,c r MR S RAXTF’R wy U 4
RITTCR (PEEK NEAR PITTER CRrEK. W 0 I
ENrAMpM&tI*r (flY AP ii uf: APK ( ‘P P’R ENCAMPU XX 1
01051 TFA0
P0’4DER RIVER At S uS SEX , WYO. TX 7
CRA7V WUMAN CREEK Al tIPPER STA. PTEAR ARV TX
01092 fl C
5* $$$*$* * 5*
pflwflwp RIVER AT SIJSSEX • W y0 . xx 9
01077 CAPMTIIPI
* * 5* 3* * * S * 5*3 * * * S
POWDER RIVER At SUSSEX. WYO. TX 7
CRAZV l4I A CREEK AT UPPER STA • NEAR APV TX 4
PPPCESSTIIC COMPTJETE FOR RItOLIESTEP PERIOD
. T( i— •n t’(E
PPi1 A I! ITT
O 50
0,13
O . 7S
0 • 7 5
0,9 5
I ,Oo
o
0•95
o, cn
O .co
0.25
-------
Table 18. Water Quality Trends
Stations and where Significant Stat stica1 Differences were Observed.
Legend: I = In roving Trend; = Degrading Trend; * Parameter concentrations are at hign leves.
Station
5
—
U
C
‘a
3
I.-
.
2
i..,
0
L.1
.
>
—
0
.
‘n I
i
0
V)
.
c —
U C
i
‘5
.
I-
a
—
‘
U
C
Beaver Cr nr Newcastle
D
0
Belle Fourche R nr Piney
I
0
D
D
Little Powder R nr Weston
I
0
I ‘
D*
0
Clear Cr at Ucross
I
I *
Clear Cr nr Arvada
0 w
D
0*
D
Piney Cr at Ucross
D
0
0
0
Crazy Woman Cr nr Arvada
Crazy Woman Cr nr Arvada
DPb*
Salt Cr nr Sussex
0
S Fork Powder R nr Kaycee
D
Tongue R nr Dayton
I
Shoshone R nr Lovell
0*
Whistle Cr nr Garland
0
Paint Rock Cr nr Mouth
0
Nowood R at Manderson
D .
0*
Beaver Cr nr Arapahoe
0*
Hams Fork nr Diamondville
D
I
‘
Muddy Cr nr Hampton
0
0 *
D
0*
bHg
Bitter Cr nr Kanda
1*
1
Kilipecker Cr at Rock Springs
D*
I .
D
1*
I
Bitter Cr nr Bitter Creek
N Platte R nr Sinclair
0 D
I
±
D
LI
I
0* 1
Iti
I
II
PCU
E
20
-------
Table— 18 -(-eontinued). Water Quality Trends
Wyo :iNG
Stations and Parameters where .Signff- icant Statistical Differences were Observed.
Legend: I In roving Trend; D Degrading Trend; * = Parameter concentrations are at high levels.
Station
a
—
C
,
g)
I_
Z
,
L_
o
. .
I
2
.
0
v,
.
4
>
.
. !
Q
.
;
0
v,
•0
v
a.
(-,
a
•
0
V
(fl
)
0
.
- u
‘
(
m
°
—-
Z
N Platte R at Alcova
I
N Platte R nr Glenrock
I
Laramle R nr Ft Laranile
I
I
Little Laramie at Two Rivers
D
Sweetwater R nr Alcova
I
Litt’e Medicine Bow R nr
Medicine Bow
D s
D*
D
Salt R nr Etna
D*
Cache Cr nr Jackson
I
Cheyenee R Nr Dull Center
I
I
Belle Fourche R Abv Dry Creek
0
Powder R Nr Kaycee
D
Powder R at Arvada
0
Bighorn R at Kane
D ‘.
Shoshone R Nr Cody
D
0
Little Wind R Nr Riverton
I v
Green R Nr LaBar e
.
D
Green R Nr Green River
D
!alt Wells Cr
I
N Platte R at Mills
I
NPlatteRatCasper
tl Platte R blw Casper
I
I I
-------
122
-------
APPENDIX
State Water Quality Standards or Other
Criteria Used in the Stream Quality Analysis
123
-------
124
-------
EPA WATER QUALITY CRITERIA
Legend of Symbols Used in the Following Table
* Guideline only
(1) Green Book
(2) Blue Book
(3) Red Book
(4) Primary Drinking Water Regulation
(5) Secondary Drinking Water Regulation
(6) March 15, 1979, Federal Register
(7) July 25, 1979, Federal Register
(8) October 1, 1979, Federal Register
(9) Willingham, W.T. — EPA
125
-------
EPA Water Quality Criteria
TenET CCDO
PAPJYETER
AQUATIC LIrE
DRIMEIPG AIt0
PRIU .AR( COIfTI%CT OECTEiTICA
(o,pnr tUrt
00010 Cog Coot
Varitol. • (1)
O C eta, cold eater
0 C tan. arm eater
U
00010
(urb idlty
JTU
i ia&l . • (1)
0-SO
MA
NA
Ccnduct lvlty
00095 flo,/01
U
NA
U
Otseolved
00300 0o) gra
3.0 (3) mm.
U
A
00400 i ‘
su
6.5 — 9.0 (3)
5 0 — 9.0 (3)
6.5 — 8.3 • (2)
Oil & Grtits
00550 Tot - S*It
n o/t
0.01 a 96 1w ICSO (3)
0.01 (3)
Fri. fr (1)
Fr .. fr (1)
Un—tonlz.d
00419 Mecola
0. (3)
U
MA
Iota) Aimannia
00610 mg/I
‘
NA
05 • (2)
U
Totil Nitrate
00620 mg/I
NA
10 (4)
U
00615
Total Nitrats
mg/I.
0.05 — 0.5 • (9)
1 0 • (2)
NA
00630
Total Nitrit.
4 NitrIte
U
10.0 (4)
NA
00640
- ---
Total Solubls
Inorganic N
- n3 1 I
T ariabls
0.1 —1.0 • (9)
MA
Y riabl.
0.1—10 * (9)
00665
Iotal PbospAv .t
mg/I
Vartab ).
0.01 • 0.1 • (1.2.3)
MA
Variable
0 01 - 0.1 • (1.2.3)
00720
Total Cyanids
mg/).
0.005 (3)
0.2 • (2.7)
NA
00940
ChIorid.
.g/l..
NA
250 (5)
NA
00945
Sail fats
mg/ I.
NA
250 (5)
NA
00951
founds
rg/L
1 1*
1.4 — 2,4 (4)
depends on ang. air t p.
NA
01002
——
Total rico ..
Ansonic
— p 0/ I.
Total recoy.
S i - 24 1’s ’ avg. (6)
‘ ° - “
0.05 (4)
NA
01001
Borian
LA
1000
IA
01012
———
—p9/ ’
Total rico,.
8er 1llon
am /I
——-
•(1.24 In 43R0)—4.38) (6)
0.087 - 0.00087 (3)
NA
01022
eta ricov.
Boron
U
NA
p I A
01021
p0/I
Total rico,
Ca iiam
pgLL
Trivalent
•(1 31 ln (IiAR0)-3 92).aa
10
MA
01033
Cbronia
— -----
Total recov.
•(0.93 lit (KARD)+3.72) i
U
U
01034
Chrcamiia
100 (3)
50 (3)
U
01042
1 9/I
Total reco,,
Copper
Tot3l rico,
,(0.66 In (HARD).l.03) mae (7)
1000 (5)
1 P M
01045
Iron
1000
MA
MA
01046
p o /l-
Dissolved Ire ,.
pg/I.
NA
300 (5)
NA
01051
Total race,.
Lead
p 0 /I
Total rican.
,(1.51 In (ltAAD)—1.39 as (6)
. -
50 (1)
NA
01053
Mangan...
U
30 (5)
U
01067
p c /I
Total rico,
Nick.)
, fl
Total r,cov.
•(0.41 In (KA30).4.19) rams (1)
NA
IA
01077
5tl ,r
1,9 man (6)
50 (4)
NA
total Inorganic
M.rcury
3.2 ona (8)
0 2 (7)
P 1*
l thyl Mercury
pg/I
88 nan
NA
NA
01092
Total recee
Zinc
pc /L . . .—_
Total rocoy.
,(0 64 In (11*90)42 46) max (1)
3000 (5)
5*
01147
S.l.nion
22 man (6)
10 (4)
MA
31614
Fecal cifo n . t
ppn
4L 1 0 0mL___
Total Phenoli
p 0/ I
NA
IA
200 30-day gee. melt
400 7—day g .e. alan (31
32130
1 (3)
1 (3)
NA
Total resIdual C coldsater
50060 ChlorIne 10 .amram.ateq (3) U
_______ —- .p g/I _ ..— —————— - -— .- —_ -- - —-- -- —
Olosoined Petidu.
10300 9160C U 500 ________________ 126
CC533 Sulpended
70299 SolIds 30
_E0154 - - og/) - -
-------
10306
00530
70299
-00114 -
TORET 0010
PVJIE1TN
SECOIICIRY CONTACT RTCREATT06
LIVISTOCK hAT(RU.G
l tA lr.ATIOaI
00010
Tnnpera turn
OegCent
U
U
U
00070
Turbidity
JTU
U
•
U
NA
Variable • (2)
00095
Conductivity
jnd ios/
NA
NA
iWO to p3000
00306
Disiolvid
0 ee
riIL
i*
NA
NA
00400
p 13
-50
U
U
4.5-9.0 • (2)
00550
011$ trees.
Tot - Salt
Free ?r (1)
Fr (1)
Pie, fr (1)
00619
Un—ionized
M,o,ii .
U
U
(6
00610
Total A,uiwiie
/L
NA
NA
NA
00620
Total Nitrat
egJL
NA
U
1 (11
00615
Total Nitrat.
mg/L
NA
10.0 • (2)
MA
00630
Total Nitrite
• Nitrite
- N f l
NA
100 0 • (2)
NA
00640
Total Soluble
Inorganic N
— It
NA
NA
NA
00665
Total Phosphru,
eq/L
NA
U
NA
00720
Total Cyanide
eg/L
U
NA
NA
YariIble • (2)
00940
Chloride
.9 1 1.
U
(A
•ltoZ OoeqJt
00945
Sulfat.
m /L
U
NA
NA
00951
founds
e9IL
NA
NA
Variable • (2)
a_n __it_p
01002
p 9 / I—
Total reco,.
NA
NA
200 • (2)
NA
100 (3)
NA
01007
Barhn
01012
pia .—
Total reco ’.
B,rylliua
i oLI
U
NA
Variable (3)
50 - 100
01022
recov.
Boron
( IA
1900 • 2 )
Z50 (3)
01021
Total rscOV.
Ca i
U
50 • (2)
Variable
10 50 • (2)
01033
Trio. lent
Clir iiu
NA
NA
U
01034
Total e.
Claroulu.
NA
Variab ls
100 — 1000 • (2)
01042
Total recov
Copper
NA
600 • (2)
Variable
200 - 6000 • (2)
01045
pgLt
Tnt l rota..
Iron
NA
(A
Variabi.
4t A I O — 20( YI • (21
01046
, aqIL
Dissolved Ira.,
p I lL
U
NA
NA
Variable
01051
Total rico..
Lead
— p g / I
Total reco,.
U
NA
100 • (2)
NA
5006 — 10900 • (2)
Variable —
01055
Mangaoun.
ji
Total rico ,.
NA
•
NA
,fai — sIuo • (7)
Variable
209 - 2000 • (2)
01067
NIck.l
1 IP
Total rico,.
U
NA
NA
01077
SlIcer
—p ol l
Total inorganic
Mercury
p g ! 1
NA
10 • (2)
U
Methyl Mercury
pglL
NA
NA
NA
Varlabl,
01092
Total rico,
ZInc
U
25000 • (2)
2009 - i0 0 0 0 • (2)
01141
p 3 1 1
Total rico..
Selenlu.
31*
SO • (2)
20 • (2)
31614
32720
F ecal {
eon
—
Total Phenoit
polL
-
— 1000 30—lay geo roan
2000 7-day gee roan (2)
U
1006 aa (2)
NA
tA
NA
10060
Total residual
Chlorine
NA
U
— —
NA
0i o 9 Ived Peildue
9100 C
- tu spend ..d
Solids
.o,/I
Variable ‘a
10000 • (21
Variable tO
Ic000 • (2)
127
-------
COLORADO
Water Quality Standards
Stream Segment Classifications
EPA Region 8
Segment
Classification Description Code
Al Contact recreation, cold water
fishery 15
A2 Contact recreation, warm water
fishery 16
B]. No contact recreation, cold water
fishery 17
B2 No contact recreation, warm water
fishery 18
128
-------
COLORADO
Water Quality Standards Or Criteria Used In The Stream Quality Analysis
PARAMETER
STORET
CODE
Class,
fication
Al
A2
Bi B2
1. 0.0. 00300 6 5 6 5
2. Fecal Colif. 31616 200 200 1000 1000
3. Fecal Colif. 31615 200 200 1000 1000
4. Fecal Colif. 31625 200 200 1000 1000
5. Total Colif. 31501 2000 2000 10000 10000
6. Total Colif. 31505 2000 2000 10000 10000
7. Total Nitrite-N 00615 .5 .5 .5 .5
8. Total Nitrogen 00600 10 10 10 10
9. Total Nitrate-N 00620 10 10 10 10
10. Total Nitrate-N 00630 10 10 10 10
11. Total N03 - N03 71850 j 10 10 10 10
12. Total P0k — P 00665 .1 .1 .1 .1
13. Total P0k — PCt 00650 . .1 .1 .1 .1
14. Total P0k — P 70505 .1 .1 .1 .1
15. lOS 00515 500 500 500 500
16. TDS 70300 500 500 500 500
17. TDS 70301 500 500 500 500
18. TDS 70295 500 500 500 500
19. Conductivity 00095 833 833 833 833
20. Turbidity 00070 25 25 25 25
21. Susp. Solids 00530 90 90 90 90
22. Susp. Solids 70299 90 90 90 90
23. Susp. Solids O154 90 90 90 90
24. Chloride 00940 250 250 250 250
25. Sulfate 00945 250 250 250 250
26. Unionized NH 3 00619 .02 .02 .02 .02
27. NH3 - NHk -N 00C08 .02 .02 .02 .02
28. NH3 - NHk -N 00610 .02 .02 .02 .02
29. Cyanide 00720 .005 .005 .005 .005
30. Arsenic 1002 130 130 130 130
31. Total Chromium 1034 100 100 100 100
32. Total Selenium 1147 22 22 22 22
33. Mercury 71900 3.2 3.2 3.2 3.2
]j Observed concentration multiplied by 0.226.
2/ Observed concentration multiplied by 0.326.
129
-------
MONTANA
Water Quality Standards
Stream Segment Classifications
Description
Domestic use, access restricted
Domestic use after treatment by simple
disinfection, normal access
Domestic use after treatment, salmonid
fish propagation
Domestic use after treatment, marginal
salmonid fish propagation
Domestic use after treatment, nonsalmo-
nid fish propagation
Contact recreation, salmonid fish
propagation
Contact recreation, marginal salmonid fish
propagation
Contact recreation, nonsalmonid fish
propagation
Agriculture and Industry
Classification
A A closed
A-i A open Di
B-i B-D1
B-2
B-3
C-i
C-2
C-3
£
B-D2
B -03
C-Di
C-D2
E- F
EPA Region 8
Segment
Code
26
27
28
29
30
31
32
33
34
130
-------
MONTANA
Water Quality Standards Or Criteria Used In The Stream Quality Analysis
PARAMETER
-
STORET
CODE
ñn A . t
Segnent
Classifica
tlon .11
A
A—i
B—i
B—2
B-3
C—i
C—2
C-3
E
1. 0.0. uv.jvu 7 7 6 5 1 b 6 3
2. Fecal Collf. 31616 50 50 200 200 200 200 200 200 200
3. Fecal Colif. 31615 50 50 200 200 200 200 200 200 200
4. Fecal Colif. 31625 50 50 200 200 200 200 200 200 200
5. Total ColIf. 31501 50 50 2000 2000 2000 2000 2000 2000 2000
6. Total ColIf. 31505 50 50 2000 2000 2000 2000 2000 2000 2000
7. Total Nitrite—N 00615 1 1 .05 .05 .5 .5 .5 .5 1
8. Total Nitrogen 00600 10 10 1 1 1 1 1 1 1
9. Total Nitrate—N 00620 10 10 1 1 1 1 1 1 1
10. Total Nitrite Nitrate 00630 10 10 1 1 1 1 1 1 1
11. Total N0 - N03 7l85O2 ’ 10 10 1 1 1 1 1 1 1
12. Total P0’. - P 00665 .1 .1 .1 .1 .1 .1 .1 .1 .1
13. Total P0’. — P0’ . 00650k’ .1 .1 .1 .1 .1 .1 .1 .1 .1
14. Total P0’ - P 70505 .1 .1 .1 .1 .1 .1 .1 .1 .1
15. TDS 00515 500 500 500 500 500 500 500 500 500
16. IDS 70300 500 500 500 500 500 500 500 500 500
17. lOS 70301 500 500 500 500 500 500 500 500 500
18. TDS 70295 500 500 500 500 500 500 500 500 500
19. ConductivIty 00095 833 833 833 833 8.33 833 833 833 833
20. Turbidity 00070 25 25 25 25 25 25 25 25 25
21. Susp. Solids 00530 90 90 30 90 90 30 90 90 150
22. Susp. Solids 70299 90 90 30 90 90 30 90 90 150
23. Susp. Solids 0i54 90 90 30 90 90 30 90 90 150
24. Chloride 00940 250 250 250 250 250 250 250 250 250
25. Sulfate 00945 250 250 250 250 250 250 250 250 250
26. Unionized NH3 00619 .02 .02 .02 .02 .02 .02 .02 .02 .02
27. NH3 + NH’. -N 00608 .02 .02 .02 .02 .02 .02 .02 .02 .02
28. NH3 + NH’. -N 00610 .02 .02 .02 .02 .02 .02 .02 .02 .02
29. Cyanide 00720 .2 .2 .005 .005 .005 .005 .005 .005 .2
30. Arsenic 1002 .05 .05 130 130 130 130 130 130 130
31. Total Chromium 1034 50 50 100 100 100 100 100 100 100
32. Total Selenium 1147 10 10 22 22 22 22 22 22 20
33. Mercury 71900 .2 .2 3.2 3.2 3.2 3.2 3.2 3.2 3.2
/ Refer to the next sheet for descriptions of classifications
V Observed concentration multiplied by 0.226.
/ Observed concentration multiplied by 0.326.
131
-------
NORTH DAKOTA
Water Quality Standards
Stream Segment Classifications
EPA Region 8
Segment
Classification Description Code
I Resident fish specie propagation;
contact recreation; domestic use after
simple treatment; irrigation, stock—
watering, and wildlife use. 39
IA Similar to Class I except softening
may be required for domestic use. 40
II Similar to class I except additional
treatment may be required for domestic
use. 41
III Industrial and agricultural uses. 42
132
-------
NORTH DAKOTA
Water Quality Standards Or Criteria Used In The Stream Quality Analysis
jj Observed concentration multiplied by 0.226.
V Observed concentration multiplied by 0.326.
PARAMETER
STORET
CODE
Classificati
on
I
IA
II III
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.
21.
22.
23.
24.
25.
26.
27.
28.
29.
30.
31.
32.
33.
D.O.
Fecal Colif.
Fecal Colif.
Fecal Colif.
Total Colif.
Total Colif.
Total Nitrite-N
Total Nitrogen
Total Nitrate N
Total Nitrate N
Total NO 3 - NO 3
Total P0k — P
Total P0k — P0k
Total P0k — P
TDS
TDS
TDS
TDS
Conductivity
Turbidity
Susp. Solids
Susp. Solids
Susp. Solids
Chloride
Sul fate
Unionized NH3
NH3 + NOk -N
NH3 + NO’+ -N
Cyanide
Arsenic
Thtal Chromium
Total Selenium
Mercury
uujuu
31616
31615
31625
31501
31505
00615
00600
00620
00630
71850 .
00665
00650 ?
70505
00515
70300
70301
70295
00095
00070
00530
70299
$0154
00940
00945
00619
00608
00610
00720
1002
1034
1147
71900
5
5
5
5
200
200
200
200
200
200
200
200
200
200
200
200
2000
2000
2000
2000
2000
2000
2000
2000
.5
.5
.5
.5
1
1
1.5
1.5
1
1
1.5
1.5
1
1
1.5
1.5
1
1
1.5
1.5
.1
.1
.2
.2
.1
.1
.2
.2
.1
.1
.2
.2
500
500
500
500
500
500
500
500
500
500
500
500
500
500
500
500
833
833
833
833
25
25
25
25
90
90
90
90
90
90
90
90
90
90
90
90
100
175
250
250
250
450
450
750
.02
.02
.02
.1
.02
.02
.02
.1
.02
.02
.02
.1
.005
.005
.005
.1
50
50
50
100
50
50
50
50
10
2
10
2
1O
2
10
2
133
-------
SOUTH DAKOTA
Water Quality Standards
Stream segment classifications are made up of Uses #9 and 10
and combinations of uses listed below:
Use
Group Description
1. Domestic water supply waters.
2. Cold water permanent fish life propagation waters.
3. Cold water marginal fish life propagation waters.
4. Warm water permanent fish life propagation waters.
5. Warm water semipermanent fish life propagation
waters.
6. Warm water marginal fish life propagation waters.
7. Immersion recreation waters.
8. Limited contact recreation waters.
9. Wild life propagation and stock watering waters.
10. Irrigation waters.
11. Comerce and Industrial waters.
134
-------
SOUTH DAKOTA
Water Quality Standards Or Criteria Used In The Stream Quality Analysis
y Refer to the next sheet for description of uses
V Observed concentration multiplied by 0.226 for compatability in parameter category
/ Observed concentration multiplied by 0.326 for compatability in parameter category
PARAMETER
STORET
CODE
Segment
Classifications And Uses- il
1
1,5,8
2
3,8
3
6,8
4
5,7,
5
1,2,7,8
6
2,8
7
4,7,8
8 9 10 12 13
4,8 3,7,8 2,7,81 1,3,8 1,4,7,8 9,10
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.
21.
22.
23.
24.
25.
26.
27.
28.
29.
30.
31.
32.
33.
34.
35.
36.
37.
38.
39.
40.
41.
42.
43.
0.0.
Fecal Colif.
Fecal Colif.
Fecal Colif.
Total Colt?.
Total Colif.
Total Nitrite—N
Total Nitrogen
Total Nitrate—N
Tot. Nitrite Nitrate—N
Tot. N03 - NO3 J
Tot. PO&. - P
Tot. P0k - POi ,
Tot. Pot. — P
lOS
TDS
TOS
lOS
Conductivity
Turbidity
Susp. Solids
Susp. Solids
Susp. Solids
Chloride
Sulfate
Unionized NH3
NH3 + NH . -N
NH3 + NH.. -N
Cyanide
Arsenic
Total Chromium
Total Selenium
Mercury
Copper
Lead
Zinc
Cadmium
Chromium H-4
Nickel
pH
Hardness
Temp. 0 C
Temp. F
vv. uv
31616
31615
31625
31501
31505
00615
00600
00620
00630
71850
0O 5
00650
70505
00515
70300
70301
70295
00095
00070
00530
70299
80154
00940
00945
00619
00608
00610
00720
1002
103 1
1147
71900
1042
1051
1092
1027
1033
1067
00400
5
200
200
200
5000
5000
.5
10
10
10
10
.1
.1
.1
1000
1000
1000
1000
2500
25
30
30
30
100
500
.02
.02
.02
20
50
50
10
0.2
‘5
1000
1000
1000
5000
5000
.5
50
50
50
50
.1
.1
i .1
5000
O0Q
5000
5000
2500
25
30
30
30
100
500
.02
.02
.02
20
50
100
10
3.2
5
1000
1000
1000
5000
5000
.5
10
10
10
10
.1
.1
.1
1000
1000
1000
1000
2500
25
90
90
90
250
500
.04
.04
.04
20
50
50
10
.2
.88
1.51
0.64
1.31
0.83
0.47
6.3
5
200
200
200
5000
5000
.5
50
50
50
50
.1
.1
.1
5000
5. QQ
5000
5000
2500
25
90
90
90
250
500
.04
.04
.04
20
50
100
10
3.2
1000
1000
1000
5000
5000
.5
50
50
50
50
.1
.1
.1
5000
5000
5000
5000
2500
25
150
150
150
250
500
.05
.05
.05
20
50
100
10
3.2
6.0
S
1000
1000
1000
50O0
5000
.5
50
50
50
.1
.1
.1
5000
5000
5000
5000
2500
25
90
90
90
250
500
.02
.02
.02
20
50
100
10
3.2
6.5
S
200
200
200
5000
5000
.5
50
50
50
50
.1
.1
.1
5000
5000
3000
5000
2500
25
90
90
90
250
500
.04
.04
.04
20
50
100
10
3.2
6.5
5
1000
1000
1000
5000
5000
.5
50
50
50
50
.1
.1
.1
5000
5000
0O0
5000
2500
25
90
90
90
250
500
.04
.04
.04
20
50
100
10
3.2
a
1000
1000
1000
5000
.5
10
10
10
10
.1
.1
.1
1000
1000
I000
r 0 0 0
2500
25
90
90
90
250
500
.02
.02
.02
20
50
50
10
0.2
5
200
200
200
5000
.5
10
10
10
10
.1
.1
.1
1000
1000
1000
1000
2500
25
90
90
90
250
500
.04
.04
.04
20
50
50
10
0.2
S
200
200
200
5000
.5
50
50
50
50
.1
.1
.1
5000
5t300
s000
5000
2500
25
90
90
90
250
500
.02
.02
.02
20
50
100
10
3.2
6.5
S
200
200
200
5000
.5
50
50
50
50
.1
.1
.1
5000
5O0
5000
5000
2500
25
30
30
30
100
500
.02
.02
.02
20
50
100
10
3.2
6.5
S
1000
1000
1000
5000
.5
50
50
50
50
.1
.1
.1
5000
5000
5000
5000
2500
25
90
90
90
250
500
.05
.05
.05
20
50
100
10
3.2
6.0
6.5 6.6
6.5 6.5
6.5 6.5
135
-------
UTAH
Water Quality Standards
Stream Segment Classifications
EPA Region 8
Segment
Classification Description Code
1C Domestic supply with treatment 19
2B Limited contact recreation 20
3A Cold water game fisheries 21
3B Warm water game fisheries 22
3C Nongame fisheries 23
3D Water oriented wild life use 24
4 AgrIculture use 25
136
-------
UTAH
Water Quality Standards Or Criteria Used In The Stream Quality Analysis
1/ Observed concentration multiplied by 0.226.
/ Observed concentration multiplied by 0.326.
PARAMETER STORET
Classification
CODE IC
2B 3A
3B
3C 3D 4
1. 0.0.
00300
5.5
5.5
6.0
5.5
4.0
5.5
2.0
2. Fecal Colif.
31616
2000
200
200
200
200
2000
2000
3. Fecal Colif.
31615
2000
200
200
200
200
2000
2000
4. Fecal Colif.
31625
2000
200
200
200
200
2000
2000
5. Total Colif.
31501
5000
5000
5000
5000
5000
5000
5000
6. Total Colif.
31505
5000
5000
5000
5000
5000
5000
5000
7. Total Nitrite—N
00615
1.0
1.0
.05
0.5
0.5
0.5
0.5
8. Total Nitrogen
00600
10
4
4
4
4
4
4
9. Total Nitrate N
00620
10
4
4
4
4
4
4
10. Total Nitrate N
006 0
10
4
4
4
4
4
4
11. Total N03 - N03
71850
jj
10
4
4
4
4
4
4
12. Total POt. - P
00665
.05
.05
.05
O5
.5
.05
.05
13. Total POt. - PO’+
00650
.05
.05
.05
.05
.5
.05
.05
14. Total POt, - P
70505
.05
.05
.05
,05
.5
.05
.05
15. TDS
00515
500
500
500
500
500
500
1200
16. lOS
70300
500
500
500
500
500
500
1200
17. TDS
70301
500
500
500
500
500
500
1200
18. TDS
70295
50
50
50
50
50
50
1200
19. Conductivity
20. Turbidity
00095
00070
8.33
25
8.33
25
8.33
25
8.33
25
8.33
25
8.33
25
8.33
25
21. Susp. Solids
22. Susp. Solids
23. Susp. Solids
24. Chloride
00530
70299
80154
00940
90
90
90
250
90
90
90
250
90
90
90
250
90
90
90
250
90
90
90
250
90
90
90
250
90
90
90
250
25. Sulfate
00945
250
250
250
250
250
250
250
26. Unionized NH3
00619
.02
.02
.02
.02
.02
.02
.02
27. NH3 + NOt, -N
00608
.02
.02
.02
.02
.02
.02
.02
28. NH + NO -N
00610
.02
.02
.02
.02
.02
.02
.02
29. Cyanide
00720
.005
.005
.005
.005
.005
.005
.005
30. Arsenic
01002
130
130
130
130
130
130
130
31. Total Chromium
01034
100
100
100
100
100
100
100
32. Total Selenium
01147
22
22
22
22
22
22
22
33. Mercury
71900
2
.05
.05
.05
.05
2
2
137
-------
WYOMING
Water Quality Standards
Stream Segment Classifications
EPA Region 8
Segment
Classification Description Code
I Nondegradatlon segment 35
II Game fish propagation 36
III Nongame fish propagation 37
IV Unsuitable for fish propagation 38
138
-------
WYOMING
Water Quality Standards Or Criteria Used In The Stream Quality Analysis
j Observed concentration multiplied by 0.226.
/ Observed concentration multiplied by 0.326.
PARAMETER
STORET
CODE
Classification
I
II
III IV
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.
21.
22.
23.
24.
25.
26.
27.
28.
29.
30.
31.
32.
33.
D.O.
Fecal Colif.
Fecal Colif.
Fecal Colif.
Total Colif.
Total Colif.
Total Nitrite-N
Total Nitrogen
Total Nicrate N
Total Nitrite N
Total N03 - N03
Total PO - P
Total POt, * P0k
Total P0k - P
TDS
TDS
TDS
TDS
Conductivity
Turbidity
Susp. Solids
Susp. Solids
Susp. Solids
Chloride
Sul fate
Unionized NH3
N H 3 + NHt , —N
NH 3 + NHt,
Cyanide
Arsenic
Total Chromium
Total Selenium
Mercury
00300
31616
31615
31625
31501
31505
00615
00600
00620
OO6 O
71850 -
00665
00650 2i
70505
00515
70300
70301
70295
00095
00070
00530
70299
80154
00940
00945
00619
00608
00610
00720
1002
1034
1147
71900
6
1000
6
1000
5
1000
200
1000
1000
1000
200
1000
1000
1000
200
1000
1000
1000
200
1000
1000
1000
200
.5
.5
.5
10
10
10
10
10
10
10
10
10
10
10
10
100
10
10
10
10
.1
.1
.1
.1
.1
.1
.1
.1
.1
.1
.1
.1
500
500
500
500
500
500
500
500
500
500
500
500
500
500
500
500
833
833
833
833
25
25
25
25
30
30
90
90
30
30
90
90
30
30
90
90
250
250
250
250
250
250
250
250
.02
.02
.02
.02
.02
.02
.02
.02
.02
.02
.02
.02
.005
.005
.005
.005
130
130
130
130
100
100
100
100
22
22
22
22
3.2
3.2
3.2
3.2
139
-------
TECHNICAL REPORT DATA
(Please read 1 isrructions on the reverse before completing)
1 REPORT NO 2
EPA - 908/2-80-001
3 RECIPIENT’S ACCESSION NO
4 TITLE AND SUBTITLE
Water Quality Trends in Region VIII
(1979 Data)
U.S. Environmental Protection Agency
5 REPORT DATE
0ctober 1980
6 PERFORMING ORGANIZATION CODE
7 AUTHOR(S)
Thomas A. Entzminger, Richard Sotiros,
W. 1. Willin ham
8 PERFORMING ORGANIZATION REPORT NO
9 PERFORMING ORGANIZATION NAME AND ADDRESS
U.S. Environmental Protection Agency
Surveillance And Analysis Division
1860 Lincoln Street
Denver, Colorado 80295
10 PROGRAM ELEMENT NO
11 CONTRACT/GRANTNO
12 SPONSORING AGENCY NAME AND ADDRESS
13 TYPE OF REPORT AND PERIOD COVERED
Final
14 SPONSORING AGENCY CODE
15 SUPPLEMENTARY NOTES
16 ABSTRACT
Water quality trends and status for the calendar year 1979
were determined for the six states in Region VIII. These states include
Colorado, Montana, North Dakota, South Dakota, Utah and Wyoming. Data
resident in the EPA national data bank ( .STORET) were analyzed.
Statistical tests which detect significant differences between two
populations were utilized to show trends in water quality.
The status and severity of stream pollutants were determined by comparing observed
parameter concentrations to state Water Quality Standards or recognized criteria.
17. KEY WORDS AND DOCUMENT ANALYSIS
a DESCRIPTORS
b IDENTIFIERS/OPEN ENDED TERMS
C COSATI held/Group
Water Quality
Water Quality Index
Colorado STORET
Montana
North Dakota
South Dakota
Utah
Wyoming
18 DISTRIBUTION STATEMENT
.
Release to public
19 SECURITY CLASS (Th:sReporr)
Unclassified
21 NO OF PAGES
140
20 SECURITY CLASS (This page)
Unclassified
22 PRICE
EPA Form 2220—1 (Rev 4—77)
PREVIOUS EDITION IS OBSOLETE
140
------- |