U.S. ENVIRONMENTAL PROTECTION AGENCY
NATIONAL EUTROPHICATION SURVEY
WORKING PAPER SERIES
REPORT
ON
TROPIC RESERVOIR
GARFIELD COUNTY
UTAH
EPA REGION VIII
WORKING PAPER No, 860
CORVALLIS ENVIRONMENTAL RESEARCH LABORATORY - CORVALLIS, OREGON
and
ENVIRONMENTAL MONITORING & SUPPORT LABORATORY - LAS VEGAS, NEVADA
-------
ON
Mill
PAPER No, 860
IKE COOPERATION OF THE
STATE DIVISION OF HEALTH
AMD THE
UTAH [RATIONAL GOAF®
NOVEMBER, 1977
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CONTENTS
Foreward 11
List of Utah Study Lakes and Reservoirs 1v
Lake and Drainage Area Map v
Sections
L Conclusions 1
[I. Lake and Drainage Basin Characteristics 3
Lake Water Quality Summary 4
IV. Nutrient Loadings .8
V. Literature Reviewed ' 12
VI. Appendices • 13
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ii
FOREWORD
The National Eutrophication Survey was initiated in 1972 in
response to an Administration commitment to investigate the nation-
wide threat of accelerated eutrophication to freshwater lakes and
reservoirs.
OBJECTIVES
The Survey was designed to develop, in conjunction with state
environmental agencies, information on nutrient sources, concentrations,
and impact on selected freshwater lakes as a basis for formulating
comprehensive and coordinated national, regional, and state management
practices relating to point-source discharge reduction and non-point
source pollution abatement in lake watersheds.
ANALYTIC APPROACH
The mathematical and statistical procedures selected for the
Survey's eutrophication analysis are based on related, concepts that:
a. A generalized representation or model relating
sources, concentrations, and impacts can be constructed.
b. By applying measurements of relevant parameters
associated with lake degradation, the generalized model
can be transformed into an operational representation of
a lake, its drainage basin, and related nutrients.
c. With such a transformation, an assessment of the
potential for eutrophication control can be made.
LAKE ANALYSIS
In this report, the first stage of evaluation of lake and water-
shed data collected from the study lake and its drainage basin is
documented. The report is formatted to provide state environmental
agencies with specific information for basin planning [§303(e)], water
quality criteria/standards review [5303(c)], clean lakes [§314(a,b)],
and water quality monitoring [§106 and §305(b)] activities mandated
by the Federal Water Pollution Control Act Amendments of 1972.
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iii
Beyond the single lake analysis, broader based correlations
between nutrient concentrations (and loading) and trophic condi-
tion are being made to advance the rationale and data base for
refinement of nutrient water quality criteria for the Nation's
fresh water lakes. Likewise, multivariate evaluations for the
relationships between land use, nutrient export, and trophic
condition, by lake class or use, are being developed to assist
in the formulation of planning guidelines and policies by EPA
and to augment plans implementation by the states.'
ACKNOWLEDGEMENT
The staff of the National Eutrophication Survey (Office of
Research and Development, U.S. Environmental Protection Agency)
expresses sincere appreciation to the Utah Department of Social
Services and the Utah Department of Natural Resources for pro-
fessional involvement, to the Utah National Guard for conducting
the tributary sampling phase of the Survey, and to those Utah
wastewater treatment plant operators who voluntarily provided
effluent samples and flow data.
The staffs of the Bureau of Water Quality of the Division
of Health and the Division of Wildlife Resources provided inval-
uable lake documentation and counsel during the Survey, reviewed
the preliminary reports, and provided critiques most useful in
the preparation of this Working Paper series.
Major General Maurice L. Watts, the Adjutant General of Utah,
and Project Officer Lt. Colonel T. Ray Kingston, who directed, the
volunteer efforts of the Utah National Guardsmen, are also grate-
fully acknowledged for their assistance to the Survey.
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iv
NATIONAL EUTROPHICATION SURVEY
STUDY LAKES AND RESERVOIRS
STATE OF UTAH
NAME
Bear
Deer Creek
Echo
Fish
Flaming Gorge
Huntington
Joes Valley
Lower Bowns
Lynn
Minersville
Moon
Navajo
Newcastle
Otter Creek
Pang inch
Pelican
Pineview
Piute
Porcupine
Powel1
Pruess
Sevier Bridge
Starvation
Steinaker
Tropic
Utah
Mil lard Bay
COUNTY
Rich, UT; Bear Lake, ID
Wasatch
Sunimi t
Sevier
Daggett, UT;
Sweetwater, WY
Emery
Emery
Garfield
Box Elder
Beaver
Duchesne
Kane
Iron
Piute
Garfield
Uintah
Weber
Piute
Cache
Garfteld, Kane, San
Juan, UT; Coconino, AZ
Mi Hard
Juab, Sanpete
Duchesne-
Uintah
Garfield
Utah
Box Elder
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Map Location
m TROPIC
^RESERVOIR
A2
TROPIC RESERVOIR
Tributary Sampling Site
X Lake Sampling Site
^D Drainage Area Boundary
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TROPIC RESERVOIR
STORE! NO. 4923
I. CONCLUSIONS
A. Trophic Condition:
Survey data indicate that Tropic Reservoir is meso-
eutrophic. It ranked eleventh in overall trophic quality when
the 27 Utah lakes and reservoirs sampled in 1975 were compared
using a combination of six parameters*. Nine of the water
bodies had less median total phosphorus, ten had less and
three had the same median dissolved orthophosphorus, 12 had
less and one had the same median inorganic nitrogen, 14 had
less mean chlorophyll a_, and 12 had greater mean Secchi disc
transparency.
Survey limnologists observed an algal bloom in August and
noted that aquatic macrophytes occupied much of the reservoir
bottom in August and September.
B. Rate-Limiting Nutrient:
The results of the algal assay indicate phosphorus limi-
tation in May. The reservoir data indicate phosphorus limi-
tation in May and nitrogen limitation in August and September.
C. Nutrient Controllability:
1. Point sources—No known wastewater treatment plants
impacted Tropic Reservoir during the sampling year.
The present phosphorus loading of 0.40 g/m2/yr is less
than that proposed by Vollenweider (Vollenweider and Dillon,
* See Appendix A.
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2
1974) as an oligotrophic loading (see page 11). However, the
hydraulic retention time of the reservoir is a rather short
56 days, and Vollenweider's model may not apply. Note that
less than 12% of the phosphorus load was retained and an
apparent loss of nitrogen occurred during the sampling year.
2. Non-point sources--Non-point sources, including
direct precipitation, contributed all of the total phosphorus
load to the reservoir. The East Fork of the Sevier River
added 89.8% of the total; Badger Creek, 1.7%; and the un-
gaged tributaries contributed an estimated 3.4%.
The phosphorus export rates of the East Fork Sevier
River and Badger Creek were very low during the sampling
year (1 and < 1 kg/km2 respectively; see page 10).
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II. RESERVOIR AND DRAINAGE BASIN CHARACTERISTICS1"
A. Morphometry :
1. Surface area: 0.73 kilometers2.
2. Mean depth: 3.0 meters.
3. Maximum depth: 9.1 meters.
4. Volume: 2.159 x 106 m3.
5. Mean hydraulic retention time: 56 days (based on outflow).
B. Tributary and Outlet:
(See Appendix C for flow data)
1. Tributaries -
Drainage Mean flow
Name area (km2)* (m3/sec)*
E. Fk. Sevier River 191.7 0.440
Badger Creek 14.0 0.007
King Creek 5.4 0.005
Minor tributaries &
immediate drainage - 5.8 0.011
Totals 216.9 0.463
2. Outlet -
E. Fk. Sevier River 217.6** 0.445
C. Precipitation***:
1. Year of sampling: 20.8 centimeters.
2. Mean annual: 28.5 centimeters.
t Table of metric equivalents—Appendix B.
tt Sudweeks, 1975.
* For limits of accuracy, see Working Paper No. 175, "... Survey Methods,
1973-1976".
** Includes area of reservoir.
*** See Working Paper No. 175.
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4
III. WATER QUALITY SUMMARY
Tropic Reservoir was sampled three times during the open-water season
of 1975 by means of a pontoon-equipped Huey helicopter. Each time,
samples for physical and chemical parameters were collected from one
or more depths at one station in May and August and from two stations
in September (see map, page v). During each visit, a single depth-inte-
grated (4.6 m or near bottom to surface) sample was collected (composi-
ted in September) from the station(s) for phytoplankton identification
and enumeration; and during the first visit, a single 18.9-liter depth-
integrated sample was collected for algal assays. Also each time, a depth-
integrated sample was collected from the station(s) for chlorophyll £
analysis. The maximum depths sampled were near-surface only at station
1 and 5.8 meters at station 2.
The sampling results are presented in full in Appendix D and are
summarized in the following table.
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PARAMETER
TEMP (C)
DISS OXY (MG/L)
CNDCTVY (MCROMO)
PH (STAND UNITS)
TOT ALK (MG/L)
TOT P (MG/L>
ORTHO P (MG/L)
N02*N03 (MG/L)
AMMONIA (MG/L)
KJEL N (MG/L)
INORG N (MG/L)
TOTAL N (MG/L)
CHLRPYL A (UG/L)
SECCHI (METERS)
A. SUMMARY OF PHYSICAL ANO
1ST SAMPLING ( 5/ 8/75)
1 SITES
CHEMICAL CHARACTERISTICS FOR TROPIC RESERVOIK
STORET CODE 4923
2ND SAMPLING ( 9/25/75)
2 SITES
3RD SAMPLING ( 8/14/75)
1 SITES
RANGE
4.3
9.0
247.
8.4
242.
0.026
0.006
0.080
0.030
0.600
0.110
0.660
17.0
0.3
4.3
9.0
- 247.
8.4
- 242.
- 0.026
- 0.006
- 0.080
- 0.030
- 0.600
- 0.110
- 0.680
- 17.0
0.3
MEAN
4.3
9.0
247.
8.4
242.
0.026
0.006
0.080
0.030
0.600
0.110
0.680
17.0
0.3
MEDIAN
4.3
9.0
247.
8.4
242.
0.026
0.006
0.080
0.030
0.600
0.110
0.680
17.0
0.3
RANGE
13.5
9.2
218.
8.8
170.
0.012
0.002
0.020
0.020
0.200
0.040
0.220
1.0
1.2
- 15.3
- 10.4
- 245.
9.0
- 193.
- 0.015
- 0.006
- 0.020
- 0.020
- 0.400
- 0.040
- 0.420
1.4
3.0
MEAN
14.6
9.7
228.
8.9
179.
0.013
0.003
0.020
0.020
0.300
0.040
0.320
1.2
2.1
MEDIAN
15.1
9.4
221.
8.8
174.
0.013
0.002
0.020
0.020
0.300
0.040
0.320
1.2
2.1
RANGE
15.8
6.6
116.
8.7
73.
0.021
0.011
0.020
0.020
0.400
0.050
0.420
9.4
3.0
- 16.0
6.6
- 117.
8.9
75.
- 0.022
- 0.012
- 0.030
- 0.040
- 0.400
- 0.060
- 0.430
9.4
3.0
MEAN
15.9
6.6
116.
8.8
74.
0.021
0.011
0.023
0.030
0.400
0.053
0.423
9.4
3.0
MEDIAI
15.9
6.6
116.
8.8
74.
0.021
0.011
0.020
0.030
0.400
0.050
0.420
9.4
3.0
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B. Biological characteristics:
1. Phytoplankton -
Sampling
Date
05/08/75
08/14/75
09/25/75
Dominant
Genera
1.
1.
2.
3.
4.
1.
2.
3.
Oscillatoria sp.
Total
Gloeotrichia sp.
Chroomonas sp.
Anabaena sp.
Staurastrum sp.
Total
Chroomonas s£.
Cryptompnas sj).
Pediastrum sp.
Algal Units
per ml
14
14
4,660
98
65
33
4,856
80
40
20
2. Chlorophyll ^ -
Total
Sampl i ng
Date
05/08/75
08/14/75
09/25/75
Station
Number
1
2
1
2
1
2
Limiting Nutrient Study:
1. Autoclaved, filtered, and nutrient spiked -
Spike (mg/1)
Control
0.050 P
0.050 P + 1.0 N
1.0 N
Ortho P
Cone, (mg/1)
< 0.005
< 0.055
< 0.055
< 0.005
Inorganic N
Cone, (mg/1)
0.095
0.095
1.095
1.095
140
Chlorophyll a
(yg/D
17.0
9.4
1.0
1.4
Maximum yield
(mg/1-dry wt.)
0.2
2.7
25.0
0.1
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7
2. Discussion -
The control yield of the assay alga, Selenastrum capri-
cornutum, indicates that the potential primary productivity
of Tropic Reservoir was moderately low at the time the sample
was taken (05/08/75). Also, the significant increase in
yield when only phosphorus was added, and the lack of res-
ponse with the addition of nitrogen alone, indicate the
reservoir was phosphorus limited at that time.
The reservoir data indicate phosphorus limitation in May
and nitrogen limitation in August and September. The mean
inorganic nitrogen to orthophosphorus ratios were 18 to 1
in May, 5 to 1 in August, and 13 to 1 in September.
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8
IV. NUTRIENT LOADINGS
(See Appendix E for data)
For the determination of nutrient loadings, the Utah National Guard
collected monthly near-surface grab samples when possible from each of
the tributary sites Indicated on the map (page v). Sampling was begun
in November, 1974, and was completed in October, 1975.
Through an interagency agreement, stream flow estimates for the
year of sampling and a "normalized" or average year were provided by
the Utah District Office of the U.S. Geological Survey for the tri-
butary sites nearest the reservoir.
Except for King Creek, nutrient loads for sampled tributaries were
determined by using a modification of a U.S. Geological Survey computer
program for calculating stream loadings*. Although King Creek was sam-
pled 11 times, flows were too low to be measured accurately, and nutrient
loads for this stream and for the unsampled "minor tributaries and
immediate drainage" ("II" of U.S.G.S.) were estimated using the means of
the nutrient loads, in kg/km2/year, at stations A-2 and B-l and multiplying
the means by the King Creek and II areas in km2.
No w&stewater treatment plants impacted Tropic Reservoir during
the sampling year.
See Working Paper No., 175.
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9
A. Waste Sources:
1. Known municipal - None
2. Known industrial - None
B. Annual Total Phosphorus Loading - Average Year:
1. Inputs -
kg P/ % of
Source yr total
a. Tributaries (non-point load) -
E. Fk. Sevier River 265 89.8
Badger Creek 5 1.7
King Creek 5 1.7
b. Minor tributaries & immediate
drainage (non-point load) - 5 1.7
c. Known municipal STP's - None
d. Septic tanks - Unknown ?
e. Known industrial - None
f. Direct precipitation* - 15 5.1
Total 295 100.0
2. Outputs -
Lake outlet - E. Fk. Sevier River 260
3. Net annual P accumulation - 35 kg.
* See Working Paper No. 175.
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10
C. Annual Total Nitrogen Loading - Average Year:
1. Inputs -
kg N/ % of
Source yr total
a. Tributaries (non-point load) -
E. Fk. Sevier River 7,700 86.1
Badger Creek 160 1.8
King Creek 140 1.6
b. Minor tributaries & immediate
drainage (non-point load) - 150 1.7
c. Known municipal STP's - None
d. Septic tanks - Unknown ?
e. Known industrial - None
f. Direct precipitation* - 790 8.8
Total 8,940 100.0
2. Outputs -
Lake outlet - E Fk. Sevier River 10,810
3. Net annual N loss - 1,870 kg.
D. Non-point Nutrient Export by Subdrainage Area:
Tributary kg P/km2/yr kg N/km2/yr
E. Fk. Sevier River 1 40
Badger Creek < 1 11
E. Mean Nutrient Concentrations in King Creek:
Mean Total P Mean Total N
Cone, (mg/1) Cone, (mg/1)
0.014 0.923
* See Working Paper No. 175.
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11
F. Yearly Loads:
In the following table, the existing phosphorus loadings
are compared to those proposed by Vollenweider (Vollenweider
and Dillon, 1974). Essentially, his "dangerous" loading is
one at which the receiving water would become eutrophic or
remain eutrophic; his "permissible" loading is that which
would result in the receiving water remaining oligotrophic
or becoming oligotrophic if morphometry permitted. A meso-
trophic loading would be considered one between "dangerous"
and "permissible".
Note that Vollenweider's model may not be applicable to
water bodies with short hydraulic retention times.
Total Phosphorus Total Nitrogen
Total Accumulated Total Accumulated
grams/m2/yr 0.40 0.05 12.2 loss*
Vollenweider phosphorus loadings
(g/m2/yr) based on mean depth and mean
hydraulic retention time of Tropic Reservoir:
"Dangerous" (eutrophic loading) 0.84
"Permissible" (oligotrophic loading) 0.42
* There was an apparent loss of nitrogen during the sampling year. This
may have been due to nitrogen fixation in the reservoir, solubilization of
previously sedimented nitrogen, recharge with nitrogen-rich ground water,
unsampled point sources discharging directly to the reservoir, or (probably)
insufficient outlet sampling in relation to the relatively short hydraulic
retention time. Whatever the cause, a similar nitrogen loss has occurred
at Shagawa Lake, Minnesota, which has been intensively studied by EPA's
former National Eutrophication and Lake Restoration Branch (Malueg et al.,
1975).
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12
V. LITERATURE REVIEWED
Malueg, Kenneth W., D. Phillips Larsen, Donald W. Schults, and
Howard T. Mercier; 1975. A six-year water, phosphorus, and
nitrogen budget for Shagawa Lake, Minnesota. Jour. Environ.
Qua!., vol. 49 no. 2, pp. 236-242.
Sudweeks, Calvin K., 1975. Personal communication (reservoir mor-
phometry). UT Bur. of Env. Health. Salt Lake City.
Vollenweider, R. A.s and P. J. Dillon, 1974. The application of
the phosphorus loading concept to eutrophication research.
Natl. Res. Council of Canada Pub!. No. 13690, Canada Centre
for Inland Waters, Burlington, Ontario.
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VI. APPENDICES
13
APPENDIX A
LAKE RANKINGS
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DA!A to BE USED IN RANKINGS
LAKE
CODE LAKE NAME
0*08 LAKE POWELL
4901 BEAR LAKE
4902 LOWER BOWN'S RESERVOIR
4903 DEER CREEK RESERVOIR
4904 ECHO RESERVOIR
49os LYNN RESERVOIR
4906 FISH LAKE
4907 HUNTINGTON NORTH REbtRVO
4908 JOE'S VALLEY RESERVOIR
4909 HINERSVILLE RESERVOIR
4910 MOON LAKE
4911 NAVAJO LAKE
4912 NEWCASTLE RESERVOIR
4913 OTTER CREEK RESERVOIR
4914 PAN9UITCH LAKE
••915 PELICAN LAKt
4916 PINEVIEW RESERVOIR
4917 P1UTE RESERVOIR
4918 PORCUPINE RESERVOIR
4919 PRUESS RESERVOIR (GARRIS
4920 SEVIER BRIDGE RESERVOIR
4921 STARVATION RESERVOIR
4922 STE1NAKER RESERVOIR
4923 TROPIC RESERVOIR
4924 UTAH LAKE
4925 WILLARO BAY RESERVOIR
5605 FLAMING GORGE RESERVOIR
MEDIAN
tOTAL P
0.010
0.011
0.031
0.038
0.047
0.121
0.023
0.013
0.012
0.192
0.008
0.016
0.051
0.067
0.071
0.044
0.020
0.047
0.025
0.057
0.026
0.016
0.011
0.021
0.132
0.044
0.011
MEDIAN
INORG N
0.410
0.040
0.040
0.215
0.170
0.200
0.040
0.040
0.045
0.060
0.040
0.040
0.040
0.040
0.040
0.090
0.300
0.150
0.110
0.140
0.355
0.040
O.O'iO
0.050
0.320
0.060
0.690
500-
MEAN SEC
339.830
253.167
336.000
430.333
450.333
417.667
152.000
392.000
400.000
445.000
381.000
368.000
428.667
453.66}
426.500
4J8.50C
439.013
482.625
440.000
491.000
449.778
394.583
316.750
425.000
490.583
457.182
285.636
MEAN
CHLORA
3.081
6.945
5.567
9.078
6.967
39.600
12.483
1.900
2.483
33.583
2.700
2.000
12.467
11.767
45.950
6. 390
9.692
25.329
7.860
4.533
18.222
5.675
1.844
7.200
72.012
7.567
2.500
**-
MlN DO
13.800
9.200
9.400
14.800
14.000
10.400
10.400
7. BOO
11.200
8.600
9.600
6.000
13.600
10.600
14.200
a. *oo
14*600
11.600
12.400
8.800
12.400
13.200
12.600
8.400
11.400
11. «0
10.400
MED I AN
OISS ORtHO P
0.007
0.003
0.006
0.006
0.012
0.052
0.004
0.003
0.003
0.107
0.002
0.003
0.009
0.033
0.010
0.004
0.006
0.007
0.011
0.008
0.008
0.004
0.005
0.006
0.012
0.009
0.003
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PERCENT or LAKES «I*H HIGHER VALUES (NUMBER of LAKES WITH HIGHER VALUES)
UK*
CODE LAKE NAME
o^oa LAKE POWELL
'.901 BEAR LAKE
4902 LOWER BOWN*S RESERVOIR
4903 DEER CREEK RESERVOIR
4904 ECHO RESERVOIR
4905 LTNM RESERVOIR
4906 FISH LAKE
4907 HUNTINGTON NORTH RESERVO
4908 JOE'S VALLEY RESERVOIR
4904 MlNERSVILLE RESERVOIR
4916 MOON LAKE
4911 NAVAJO LAKE
4912 NEWCASTLE RESERVOIR
4913 OTTER CREEK RESERVOIR
4914 PAN«UITCH LAKE
4915 PELICAN LAKE
4916 P1NEVIEH RESERVtiift
4917 PIUTE RESERVOIR
4918 PORCUPINE RESERVOIR
4919 PRUESS RESERVOIR (GARRIS
4920 SEVIER BRIDGE RESERVOIR
4921 STARVATION RESERVOIR
4922 STEtNAKER RESERVOIR
4923 TROPIC RESERVOIR
4924 UTAH LAKE
4925 rtlLLARO BAY RESERVOIR
5605 FLAMING GORGE RESERVOIR
MEDIAN
TOTAL P
96
90
46
42
31
a
62
77
81
0
ioo
69
23
15
12
JT
50
27
58
19
54
73
as
65
4
37
90
( 25)
i 23)
< 12)
I ID
t a)
( 2)
1 16)
( 20)
1 21)
< 0)
( 26)
4 IB)
( 6)
i 4)
I 3)
« •)
t 131
( 7)
1 IS)
< 5)
( 14)
< 19)
( 22)
« 17)
( 1)
1 9)
t 23)
MEDIAN
INORG M
4 J
87 (
87 (
19 (
27 <
23 (
65 «
65 (
58 (
44 (
87 <
87 1
87 1
87 (
65 (
ft4 (
15 <
31 1
38 <
35 (
8 (
87 t
87 I
50 (
12 (
44 (
0 I
1)
19)
191
51
7)
6)
16)
16)
IS)
11)
19)
19)
19)
19)
16)
1*)
41
8)
lot
9)
2)
19)
19)
13)
3)
11)
0)
SCO-
MEAN SEC
81
96
85
42
19
58
100
69
62
27
73
77
46
15
SO
39
38
8
31
0
23
65
88
54
4
12
92
( 21)
( 25)
( 22)
t 11)
« 5)
1 15)
i 26)
( 18)
i 16)
( 7)
( 19)
« 20)
( 12)
1 4)
( 13)
i 9)
« 10)
1 21
1 8)
< 0)
1 6)
( 17)
t 23)
1 14)
1 1)
( 3)
( 24)
MEAN
CHLORA
73
loo
65
35
50
8
23
92
85
12
77
88
27
31
4
54
58
15
38
69
19
62
96
46
0
42
81
( 19)
« 26)
» 17)
( 9)
1 13)
i 2>
< 6)
( 24)
< 22)
( 3)
t 20)
( 23)
( 7)
( 8)
< 1)
< 14)
( 15)
1 4)
1 10)
( 18)
1 5)
t 16)
1 25)
( 12)
( 0)
( ID
I 21)
15-
M1N DO
15
77
73
0
12
62
62
96
46
85
69
100
19
54
8
90
4
38
33
81
33
23
27
96
42
50
62
( 4)
( 20)
( 19)
« 0)
I 3)
C 15)
( 15)
( 25)
< 12)
( 22)
1 18)
( 26)
1 5)
( 14)
( 2)
1 23)
( It
( 10)
( 81
( 21)
( 8)
i 6)
i 7)
( 23)
( ID
< 13)
1 IS)
MEDIAN
DISS ORTHO P
42 (
90 <
SO (
58 (
13 (
4 I
79 «
69 (
96 (
0 I
100 (
85 (
27 1
8 C
23 <
73 (
58 <
46 1
19 1
37 <
37 «
79 «
65 (
58 <
13 (
31 1
90 (
11)
23)
13)
14)
3)
1)
20)
18)
25)
0)
26)
22)
7)
2)
. 6)
19)
14)
12)
5i
9)
9)
20)
17)
14)
3)
8)
23)
INDEX
NO
311
540
406
196
1*2
163
341
468
428
16U
506
506
224
210
162
343
223
165
217
241
174
389
448
363
75
216
415
-------
RAKXEO BV INDEX MOS.
RANK LAKE CODE LAKE
S 4931
2 4911
3 4910
4 4907
5 4922
6 4908
7 5605
8 4902
9 4906
10 4921
11 4923
12 4915
13 0403
14 4919
IS 4912
16 4916
!7 4919
18 4925
19 4913
20 4903
21 4920
22 4909
23 4917
24 4905
25 4914
26 4904
27 4924
INDEX NO
SEAR LAKE 546
NAVAJO LAKE 506
NOON LAKE 506
HUNTINGTON KJ08TH RESttfVO 468
STEINAKER RESERVOIR 443
JOE'S VALLEY RESERVOIR 428
FLAMING GORGE RESERVOIR 415
LOWER BOWK'S RESERVOIR 406
FISH LAKE 391
STARVATION RESERVOIR 389
TROPIC RESERVOIR 363
PELICAN LAKE 343
LAKE POWELL 311
PRUESS RESERVOIR
-------
APPENDIX B
CONVERSION FACTORS
-------
CONVERSION FACTORS
Hectares x 2.471 s acres
Kilometers x 0.6214 = miles
Meters x 3.281 = feet
Cubic meters x 8.107 x 10 = acre/feet
-Square kilometers x 0.3861 = square miles
Cubic meters/sec x 35.315 = cubic feet/sec
Centimeters x 0.3937 = inches
<
Kilograms x 2.205 * pounds
Kilograms/square kilometer x 5.711 « Ibs/square mile
-------
APPENDIX C
TRIBUTARY FLOW DATA
-------
TRIBUTARY FLOW INFORMATION FOR UTAH
10/18/76
LAKE CODE 4923
TROPIC RES
TOTAL DRAINAGE AREA OF LAKE
-------
TRIBUTARY FLOW INFORMATION FOR UTAH
10/18/76
LAKE CODE 4Q?3
TROPIC RES
MEAN MONTHLY FLOWS AND DAILY FLOWS(CMS>
TRIBUTARY MONTH YEAR
4923B1
4923C1
4923ZZ
11
12
1
2
3
4
5
6
7
8
9
10
11
12
1
2
3
4
5
6
7
8
9
10
11
12
1
2
3
4
5
6
7
8
9
10
74
74
75
75
75
75
75
75
75
75
75
75
74
74
75
75
75
75
75
75
75
75
75
75
74
74
75
75
75
75
75
75
75
75
75
75
MEAN FLOW DAY
0.006
0.006
0.006
0.006
0.011
0.025
0.025
0.011
0.006
0.003
0.003
0.003
0.003
0.003
0.003
0.006
0.008
0.020
0.020
0.008
0.003
0.003
0.003
0.003
0.008
0.008
0.008
0.008
0.017
0.040
0.040
0.017
0.008
0.006
0.006
0.006
9
14
11
9
8
3
24
12
9
7
11
FLOW DAY
0.006
0.006
0.006
0.006
0.008
0.028
0.006
0.006
0.003
0.003
0.003
FLOW DAY
FLOW
-------
APPENDIX D
PHYSICAL and CHEMICAL DATA
-------
STORE! RETRIEVAL DATE 76/08/13
00010
DATE TIME DEPTH WATER
FROM OF TEMP
TO DAY FEET CENT
75/05/08 1* 50 0000 4.3
75/09/35 14 10 0000 13.5
9.0
10.4
492301
37 35 53.0 112 15 11.0 3
TROPIC RESERVOIR
49017 UTAH
150892
00300 00077 00094
DO TRANSP CNDUCTVY
SECCHI FIELD
MG/L INCHES MICKOMHO
12
48L
247
245
11EPALES 2111202
0003 FEET DEPTH CLASS 00
00400
PH
SU
8.40
8.85
00410
T ALK
CAC03
MG/L
242
193
00610
NH3-N
TOTAL
MG/L
0.030
0.020K
00625
TOT KJEL
N
MG/L
0.600
0.300
00630
N02&N03
N-TOTAL
MG/L
0.080
0.020K
00671
PHOS-DIS
ORTHO
MG/L P
0.006
0.002K
00665
DATE TIME DEPTH PHOS-TOT
FROM OF
TO DAY FEET MG/L P
75/05/08 14 50 0000 0.026
75/09/25 14 10 0000 0.013
32217 00031
CHLRPHYL INCDT LT
A REMNING
UG/L PERCENT
17.0
1.0
K VALUE KNOWN TO BE
LESS THAN INDICATED
L ACTUAL VALUE IS KNOWN TO BE
GREATER THAN VALUE GIVEN
-------
STORET RETRIEVAL DATE 76/08/12
492302
37 36 42.0 112 15 01.0 3
TROPIC RESERVOIR
49017 UTAH
00010
DATE TIME DEPTH WATER
FROM OF TEMP
TO DAY FEET CENT
00300 00077 00094.
DO TRANSP CNDUCTVY
SECCHI FIELD
MG/L INCHES MICROMHO
116
117
116
218
221
75/08/14 07 55 0000
07 55 0005
07 55 0019
75/09/25 14 30 0000
14 30 0006
DATE TIME DEPTH
FROM OF
TO DAY FEET
75/08/14 07 55 0000
07 55 0005
07 55 0019
75/09/25 14 30 0000
14 30 0006
16.0
15.9
15.8
15.3
15.1
00665
PHOS-TOT
MG/L P
0.022
0.021
0.021
0.012
0.015
6.6
9.2
9.4
32217
CHLRPHYL
A
UG/L
9.4
1.4
120
120L
00031
INCUT LT
REMNING
PERCENT
11EPALES
2111202
0023 FEET DEPTH CLASS
00400
PH
SU
8.70
8.90
8.80
8*85
9.05
00410
T ALK
CAC03
MG/L
73
74
75
170
174
00610
NH3-N
TOTAL
MG/L
0.020K
0.030
0.040
0.020K
0.020K
00
00625
TOT KJEL
N
MG/L
0.400
0.400
0.400
0.200
0.400
00630
N02&.N03
N-TOTAL
MG/L
0.030
0.020K
0.020K
0.020K
0.020K
00671
PHOS-OIS
ORTHO
MG/L P
0.011
0.011
0.012
0.002
0.006
K VALUE KNOifiN TO BE
LESS THAN INDICATED
L ACTUAL VALUE IS KNOWN TO BE
GREATER THAN VALUE GIVEN
-------
APPENDIX E
TRIBUTARY DATA
-------
STORET RETRIEVAL DATE 76/08/12
74/11/09
74/12/15
75/01/11
75/02/09
75/03/08
75/05/03
75/06/24
75/07/12
75/08/09
75/09/07
75/10/11
4923A1
37 36 46.0 112 14 54.0 4
E FORK SEVIER RIVER
49 7.5 8RYCE POINT
0/TROPIC RESERVOIR 110292
BELO TROPIC RES DAM NEAR SPLWY FRM GR RD
11EPALES 2111204
0000 FEET DEPTH CLASS 00
DATE
FROM OF
TO DAY
TIME DEPTH
FEET
16 10
10 00
10 "55
11 00
11 ?0
10 05
13 00
12 00
12 10
09 50
11 30
00630
N02&N03
N-TOTAL
MG/L
0.027
0.008
0.008K
0.024
0.049
0.057
0.005
0.005
0.005
0.005
0.015
00625
TOT KJEL
N
MG/L
0.900
0.700
0.500
0.200
0.800
0.450
0.250
3.150
0.500
0.200
0.700
00610
NH3-N
TOTAL
MG/L
0.025
0.065
0.010
0.024
0.016
0.191
G.020
0.015
0.015
0.010
0.015
00671
PHOS-DIS
ORTHO
MG/L P
0.005
0.005K
0.005K
0.008K
0.008K
0.020
0.005K
0.005K
0.005K
0.010
0.005
00665
PHOS-TOT
MG/L P
0.010K
0.020
0.010
0.030
0.020
0.020
0.010K
0.050K
0.010K
0.030
0.010
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
STORET RETRIEVAL DATE 76/08/1?
DATE TIME DEPTH N02&N03
FROM OF
TO DAY FEET
74/11/09 16 40
75/05/03 10 25
75/06/24 13 30
75/07/12 12 15
75/08/09 12 35
75/09/07 10 20
75/10/11 12 00
4923A2
37 35 30.0 112 15 19.0 4
E FO«K SEVIER RIVER
49 7.5 TROPIC RES
T/TROPIC RESERVOIR 150892
ORT *D .3 MI tf OF JCT WITH GRAVEL RD
11EPALES 2111204
0000 FEET DEPTH CLASS 00
0630
6.N03
OTAL
IG/L
0.016
0.100
0.005
0.055
0.005
0.005
0.005
00625
TOT KJEL
N
MG/L
0.600
0.750
0.200
0.600
0.200
0.100
0.100K
00610
NH3-N
TOTAL
MG/L
0.025
0.100
0.015
0.005
0.010
0.005
0.005K
00671
PHOS-DIS
ORTHO
MG/L P
0.005
0.010
O.OOSK
0.005K
0.005K
0.005
O.OOSK
00665
PHOS-TOT
MG/L P
0.010K
0.010
0.010K
0.090
0.010
0.020
0.010K
K VALUE KNO*N TO BE
LESS THAN INDICATED
-------
STORET RETRIEVAL DATE 76/08/12
DATE TIME DEPTH N02&N03
FROM OF
TO DAY FEET
74/11/09 16 50
75/05/03 10 30
75/06/24 13 ?5
75/07/12 12 10
75/08/09 12 30
75/09/07 10 15
75/10/11 11 50
492381
37 35 35.0 112 15 20.0 4
BADGER CREEK
49 7.5 TROPIC RES
T/TROPIC RESERVOIR 150892
DrtT RD .4 MI rtNW OF JCT WITH GRAVEL RD
11EPALES 2111204
0000 FEET DEPTH CLASS 00
0630
'«.N03
OTAL
IG/L
0.184
0.155
0.005
0.055
0.050
0.050
0.150
00625
TOT KJEL
N
MG/L
0.500
1.250
0.337
0.200
0.325
0.600
0.100
00610
NH3-N
TOTAL
MG/L
0.025
0.054
0.020
0.005
0.010
0.005
0.005K
00671
PHOS-DIS
ORTHO
MG/L P
0.010
0.020
0.005K
0.005K
0.005K
0.005K
0.005K
00665
PHOS-TOT
MG/L P
0.010
0.020
0.020
0.010
0.010K
0.030
0.010
K V4LUE KiJOWN TO BE
LESS THAN INDICATED
-------
STORE7 RETRIEVAL DATE: 76/08/12
DATE TIME DEPTH N02&N03
FROM OF
TO DAY FEET
74/11/09
74/12/14
75/01/11
75/02/09
75/03/08
75/05/03
75/06/24
75/07/12
75/08/09
75/09/07
75/10/11
16
10
11
11
12
10
13
12
12
10
11
25
?5
10
10
00
15
10
05
15
00
40
4923C1
37 36 40.0 112 15 17.0 4
KING CREEK
49 7.5 TROPIC RES
T/TWOPIC RESERVOIR 150892
GRVL RO BRDG .3 MI WSW OF TROPIC RES DAM
11EPALES 2111204
0000 FEET DEPTH CLASS 00
0630
'&N03
OTAL
IG/L
0.200
0.200
0.192
0.164
0.180
0.210
0.150
0.170
0.170
0.180
0.220
00625
TOT KJEL
N
MG/L
0.600
1.800
0.300
0.500
2.100
1.600
0.250
0.100
0.150
0.400
0.300
00610
NH3-N
TOTAL
MG/L
0.040
0.025
0.005K
0.016
0.020
0.035
0.015
0.005K
0.010
0.025
0.005K
00671
PHOS-DIS
ORTHO
MG/L P
0.010
0.005
0.005K
0.008K
0.008K
0.005K
0.005
0.005K
0.010
0.005K
00665
PHOS-TOT
MG/L P
0.010
0.010K
0.010
0.020
0.010K
0.020
0.010K
0.010K
0.030
0.010
K VALUE KNOWN FO Bi
LESS THAN INDICATED
------- |