U.S. ENVIRONMENTAL PROTECTION AGENCY
NATIONAL EUTROPHICATION SURVEY
WORKING PAPER SERIES
REPORT
ON
OTTER CREEK RESERVOIR
PIltfE COUNTY
UTAH
EPA REGION VI11
WORKING PAPER No, 850
CORVALLIS ENVIRONMENTAL RESEARCH LABORATORY - CORVALLIS, OREGON
and
ENVIRONMENTAL MONITORING & SUPPORT LABORATORY - LAS VEGAS, NEVADA
-------
REPORT
ON
OTTER CREEK RESERVOIR
PIUTE COUNTY
UTAH
EPA REGION VIII
WORKING PAPER No, 890
WITH THE COOPERATION OF THE
UTAH STATE DIVISION OF HEALTH
AND THE
UTAH NATIONAL GUARD
OCTOBER, 1977
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1
CONTENTS
Page
Foreward .11
List of Utah Study Lakes and Reservoirs 1v
Lake and Drainage Area Map v
Sections
I. Conclusions 1
II. Lake and Drainage Basin Characteristics 3
III. Lake Water Quality Summary 4
IV. Nutrient Loadings 8
V. Literature Reviewed ' 12
VI. Appendices . .13
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11
FOREWORD
The National Eutrophication Survey was initiated in 1972 1n
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 [§303(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.
-------
111
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
Panguich
Pelican
Pineview
Piute
Porcupine
Powel1
Pruess
Sevier Bridge
Starvation
Steinaker
Tropic
Utah
Willard Bay
COUNTY
Rich, UT; Bear Lake, ID
Wasatch
Summi t
Sevier
Daggett, UT;
Sweetwater, WY
Emery
Emery
Garfield
Box Elder
Beaver
Duchesne
Kane
Iron
Piute
Garfield
Uintah
Weber
Ptute
Cache
Garfteld, Kane, San
Juan, UT; Coconino, AZ
Mi Hard
Juab, Sanpete
Duchesne
Uintah
Garfield
Utah
Box Elder
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Koosharem
Reservoir,
V
OTTER
CREEK
RESERVOIR
38°30'—
OTTER CREEK
RESERVOIR
-------
OTTER CREEK RESERVOIR
STORET NO. 4913
I. CONCLUSIONS
A. Trophic Condition:
Survey data indicate that Otter Creek Reservoir is eutrophic.
It ranked nineteenth in overall trophic quality when the 27 Utah
lakes and reservoirs sampled in 1975 were compared using a com-
bination of six parameters*. Twenty-two of the water bodies had
less median total phosphorus, 24 had less median dissolved ortho-
phosphorus, none had less but ten had the same median inorganic
nitrogen, 18 had less mean chlorophyll a_, and 22 had greater mean
Secchi disc transparency. Some depression of dissolved oxygen with
depth occurred at sampling station 1 in August (4.4 mg/1 at 7.0
meters).
Survey limnologists noted light algal blooms and submerged
macrophytes in the reservoir in May and August, and surface scums
of algae were observed in the northern fourth of the reservoir
in September.
B. Rate-Limiting Nutrient:
The algal assay results indicate the reservoir was
nitrogen limited in May and September. The reservoir data indi-
cate nitrogen limitation at all sampling stations and times.
C. Nutrient Controllability:
1. Point sources—No known point sources impacted Otter
Creek Reservoir during the sampling year.
* See Appendix A.
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2
2. Non-point sources—Non-point sources contributed the
entire phosphorus load to the reservoir during the sampling
year. The East Fork Canal contributed a little over 7455 of
the total load, and Otter Creek contributed 21%.
The estimated phosphorus loading of 0.61 g/m2/year is about
1.5 times that proposed by Vollenweider (Vollenweider and Dillon,
1974) as a eutrophic loading (see page 11). However, the phos-
phorus export rate of Otter Creek was a rather low 2 kg/km2 during
the sampling year, so it appears that land-use practices in that
drainage do not contribute significantly to the phosphorus load.
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II. RESERVOIR AND DRAINAGE BASIN CHARACTERISTICS1"
A. Morphometry :
1. Surface area: 10.20 kilometers2.
2. Mean depth: 6.3 meters.
3. Maximum depth: 11.3 meters.
4. Volume: 64.758 x 106 m3.
5. Mean hydraulic retention time: 1.4 years (based on outflow),
B. Tributary and Outlet:
(See Appendix C for flow data)
1. Tributaries -
Drainage Mean flow
Name area (km2)* (m3/sec)*
Otter Creek 854.7 0.352
East Fork Canal - 1.230
Minor tributaries &
immediate drainage - 119.3 0.031
Totals 974.0 1.613
2. Outlet -
East Fork Sevier River 984.2** 1.437
C. Precipitation***:
1. Year of sampling: 20.7 centimeters.
2. Mean annual: 20.7 centimeters.
t Table of metric conversions—Appendix B.
tt Sudweeks, 1975.
* For limits of accuracy, see Working Paper No. 175, "...Survey Methods,
1973-1976".
** Includes area of reservoir; lesser outflow due to evaporation.
*** See Working Paper No. 175.
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4
III. WATER QUALITY SUMMARY
Otter Creek 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 a number of depths at two stations on the reservoir (see map,
page v). During each visit, a single depth-integrated (4.6 m to
surface) sample was composited from the stations for phytoplankton
identification and enumeration; and during the first and last visits,
a single 18.9-liter depth-integrated sample was composited for algal
assays. Also each time, a depth-integrated sample was collected
from each of the stations for chlorophyll a_ analysis. The maximum
depths sampled were 8.2 meters at station 1 and 6.1 meters at sta-
tion 2.
The sampling results are presented in full in Appendix 0 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)
INOKG N (MG/L)
TOTAL N (MG/L)
CHLRPYL A (UG/D
SECCHI (METEPS)
A. SUMMARY OF PHYSICAL AND
1ST SAMPLING ( 5/ 9/75)
2 SITES
CHEMICAL CHArfACTEKISTICS FOK OTTER CREEK RESERVOIR
STORET COOE 4913
RANGE
7.2 - 9.6
8.2 - Q.2
300. - 466.
8.6 - 8.7
226. - 288.
0.053 - 0.068
0.003 - 0.013
0.020 - 0.030
0.020 - 0.040
0.400 - 1.600
0.040 - 0.070
0.420 - 1.630
13.0 - 16.1
0.6 - 0.6
SAMPLING ( 8/13/75)
2 SITES
MEAN
8.3
8.8
383.
8.6
258.
0.063
0.007
0.021
0.030
0.637
0.051
0.659
14.5
0.6
MEDIAN
8.4
8.9
383.
8.6
256.
0.065
0.006
0.020
0.030
0.550
0.050
0.570
14.5
0.6
HANGE
18.2
4.4
406.
8.5
179.
0.058
0.024
0.020
0.020
0.300
0.040
0.320
10.7
1.4
- 20.4
8.4
- 421.
8.9
- 190.
- 0.124
- 0.095
- 0.020
- 0.020
- 0.700
- 0.040
- 0.720
- 13.4
1.8
MEAN
19.3
7.2
416.
8.8
184.
0.083
0.050
0.020
0.020
0.443
0.040
0.463
12.0
1.6
MEDIAN
18.9
7.6
419.
8.8
186.
0.084
0.053
0.020
0.020
0.400
0.040
0.420
12.0
1.6
MEAN MEDIAN
18.0 18.0
3«D SAMPLING ( 9/25/75)
2 SITES
RAN6E
17.4 - 18.8
5.6 - 8.4
309. - 324.
8.8 - 9.0
166. - 174.
0.055 - 0.086
0.034 - 0.045
0.020 - 0.020
0.020 - 0.020
0.400 - 0.600
0.040 - 0.040
0.420 - 0.620
8.5 - 8.9
1.2 - 1.5
7.1
318.
8.9
170.
0.073
0.040
0.020
0.020
0.457
0.040
0.477
8.7
1.4
7.2
318.
8.9
171.
0.078
0.041
0.020
0.020
0.400
0.040
0.420
8.7
1.4
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B. Biological Characteristics:
1. Phytoplankton -
Sampling
Date
05/09/75
08/13/75
09/25/75
2. Chlorophyll a^ -
Sampli ng
Date
05/09/75
08/13/75
09/25/75
Dominant
Genera
1. Cyclotella sp.
2. Flagellates
3. Chroomonas sp.
4. Chlamydomonas sp.
5. Cryptomonas sp.
Other genera
Total
1. Fragilaria sp.
2. Anabaena sp.
3. Ceratium sp.
4. Melosira sp.
5. Cryptomonas sp.
Otner genera
Total
Total
Station
Number
1
2
1
2
1
2
Algal Units
per ml
9,536
4,919
642
214
214
53
76
6,148
1.
2.
3.
Cryptomonas sj>.
Anabaena sp.
Ceratium sp.
446
74
74
594
Chlorophyll a
(ug/1)
16.1
13.0
10.7
13.4
8.5
8.9
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C. Limiting Nutrient Study:
1. Autoclaved, filtered, and nutrient spiked -
a. May sample -
Spike (mg/1)
Control
0.050 P
0.050 P + 1.0 N
1.0 N
b. September sample -
Ortho P
Cone, (mg/1)
Inorganic N
Cone, (mg/1)
Maximum yield
(mg/1-dry wt.)
0.015
0.065
0.065
0.015
0.065
0.065
1.065
1.065
2.5
2.6
29.1
10.5
Spike (mg/1)
Control
0.050 P
0.050 P + 1.0 N
1.0 N
Ortho P
Cone, (mg/1)
0.030
0.080
0.080
0.030
Inorganic N
Cone, (mg/1)
0.050
0.050
1.050
1.050
Maximum yield
(mg/1-dry wt.)
4.2
4.8
24.3
8.9
2. Discussion -
The control yields of the assay alga, Selenastrum capri-
cornutum, indicate that the potential primary productivity
of Otter Creek Reservoir was moderately high at the times
the samples were collected (05/09/75 and 09/25/75). Also,
the significant increases in yield with the addition of
nitrogen alone indicate the reservoir was limited by
nitrogen at those times.
The reservoir data also indicate nitrogen limitation;
i.e., the mean inorganic nitrogen/orthophosphorus ratios were
7/1 or less at all sampling times.
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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 from each of the
tributary sites indicated on the map (page v), except for the high
runoff month of May when two samples were collected. 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
tributary sites nearest the reservoir.
In this report, nutrient loads for sampled tributaries were
calculated using mean annual concentrations and mean annual flows.
Nutrient loads for unsampled "minor tributaries and immediate
drainage" ("ZZ" of U.S.G.S.) were estimated using the mean concen-
trations in Otter Creek at station A-2 and the mean annual ZZ flow.
No known wastewater treatment plants impacted the reservoir
during the sampling year.
A. Waste Sources:
1. Known municipal - None
2. Known industrial - None
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9
B. Annual Total Phosphorus Loading - Average Year:
1. Inputs -
kg P/ % of
Source yr total
a. Tributaries (non-point load) -
Otter Creek 1,345 21.0
East Fork Canal 4,770 74.3
b. Minor tributaries & immediate
drainage (non-point load) - 120 1.9
c. Known municipal STP's - None
d. Septic tanks - Unknown ?
e. Known industrial - None
f. Direct precipitation* - 180 2.8
Total 6,415 100.0
2. Outputs -
Reservoir outlet - East Fork
Sevier River 4,305
3. Net annual P accumulation - 2,110 kg.
* See Working Paper No. 175.
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10
C. Annual Total Nitrogen Loading - Average Year:
1. Inputs -
kg N/
Source yr
a. Tributaries (non-point load) -
Otter Creek 25,145
East Fork Canal 53,105
b. Minor tributaries & immediate
drainage (non-point load) - 2,215
c. Known municipal STP's - None
d. Septic tanks - Unknown ?
e. Known industrial - None
f. Direct precipitation* - 11,010
Total 91,475
2. Outputs -
Reservoir outlet - East Fork
Sevier River 54,970
3. Net annual N accumulation - 36,505 kg.
D. Non-point Nutrient Export by Subdrainage Area:
Tributary kg P/km2/yr
Otter Creek 2
E. Mean Nutrient Concentrations in East Fork Canal:
Mean Total P
Cone, (mg/1)
0.123
% of
total
27.5
58.1
2.4
12.0
100.0
kg N/km2/yr
29
Mean Total N
Cone, (mg/1)
1.369
* 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 Vollenwelder (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 0.61 0.21 9.0 3.6
Vollenweider phosphorus loadings
(g/m2/yr) based on mean depth and mean
hydraulic retention time of Otter Creek Reservoir:
"Dangerous" (eutrophic loading) 0.42
"Permissible" (oligotrophic loading) 0.21
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12
V. LITERATURE REVIEWED
Sudweeks, Calvin K., 1975. Personal communication (reservoir mor-
phometry). UT Bur. of Env. Health, Salt Lake City.
Vollenweider, R. A., and P. J. Dillon, 1974. The application of
the phosphorus loading concept to eutrophication research.
Natl. Res. Council of Canada Publ. No. 13690, Canada Centre
for Inland Waters, Burlington, Ontario.
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VI. APPENDICES
13
APPENDIX A
LAKE RANKINGS
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UATA TO BE USED
BANKINGS
CODE
&<.08
4902
4903
4905
4906
4907
4908
4909
4910
4911
491 t
4913
4914
4915
4916
4917
4918
4919
4920
4921
4922
4923
4924
4925
5605
LAKE NAME
LAKE POWELL
BEAk LAKE
LOMER BOMN'S RESERVOIR
DEER CREEK RESERVOIR
ECHO RESERVOIR
LYNN RESERVOIR
FISH LAKE
HUNTINGTON NORTH RESERVO
JOE'S VALLEY RESERVOIR
MINERSVILLE RESERVOIR
MOON LAKE
NAVAJO LAKE
NEWCASTLE RESERVOIR
OTTER CREEK RESERVOIR
PAN9UITCH LAKE
PELICAN LAKE
PINEVIEW KESERVOIR
PIUTE RESERVOIR
PORCUPINE RESERVOIR
PRUESS RESERVOIR (GARRIS
SEVIER BRIDGE RESERVOIR
STARVATION RESERVOIR
STEINAKER RESERVOIR
TROPIC RESERVOIR
UTAH LAKE
WILLARO BAY RESERVOIR
FLAMING GORGE RESERVOIR
MEDUM
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
0.028
0.047
0.025
0.057
0.026
0.016
0.011
C.021
C.132
0.044
0.011
MEDIAN
INOSG 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
o.oso
0.300
0.150
0.110
0.140
0.355
0.040
0.040
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
453.667
426.500
438.500
435.083
482.625
440.000
491.000
449.778
394.583
316.750
425.000
490.583
457.182
285.636
MEAN
CHLORA
3.081
0.945
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
6.350
5.692
25.329
7.860
4.533
18.222
5.675
1.844
7.200
72.012
7.567
2.500
15-
MIN 00
13.300
9.200
9.400
14.800
14.000
10.400
10.400
7.300
11.200
8.600
9.600
6.000
13.000
10.600
14.200
8.400
14.600
11.600
12.400
8. 800
12.400
13.200
12.600
8.400
11.400
11.000
10.400
MEOiaN
DISS O«T*O P
0.007
0.003
0.006
0.006
0.012
0.052
0.004
0.005
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 OF LAKES WITH HIGHER VALUES (NUM8ER OF LAKES «ITH HIGHER VALUES)
LAKE
CODE LAKE NAME
0*08 LAKE POWELL
4501 BEAR LAKE
4902 LOWER BOMN'S RESERVOIR
4903 DEER CREEK RESERVOIR
4904 ECHO RESERVOIR
4905 LYNN RESERVOIR
4906 FISH LAKE
4907 HUNTINGTON NORTH RESSRVO
4908 JOE'S VALLEY RESERVOIR
4909 MINERSVILLE RESERVOIR
4910 MOON LAKE
4911 NAVAJO LAKE
4912 NEWCASTLE RESERVOIR
4913 OTTER CREEK RESERVOIR
4914 PANftUITCH LAKE
4915 PELICAN LAKE
4916 PINEVIEH RESERVOIR
4^17 PIUTE RESERVOIR
4918 PORCUPINE RESERVOIR
4919 PRUESS RESERVOIR (GARRIS
4920 SEVIER BRIDGE RESERVOIR
4921 STARVATION RESERVOIR
4922 STEINAKER RESERVOIR
4923 TROPIC RESERVOIR
4924 UTAH LAKE
4925 rflLLARO BAY RESERVOIR
Ft AMTNr, r,ORGF RESERVOIR
MEDIAN
TOTAL P
96
90
46
42
31
8
62
77
81
0
100
69
23
15
12
37
50
27
58
19
54
73
85
65
4
37
90
< 25)
( 23)
( 12)
( 11)
( 8)
( 2)
( 16)
< 20)
( 21)
< 0)
( 26)
( 18)
< 6>
( 4)
( 3)
( 9)
( 13)
< 7)
( 15)
( 5)
( 14)
( 19)
( 22)
( 17)
( 1)
( 9)
( 23)
MEDIAN
IN030 N
4
87
87
19
27
23
65
65
58
44
87
87
87
87
65
54
15
31
38
35
8
87
87
50
12
44
0
( 1)
< 19)
( 19)
( 5)
( 7)
( 6)
( 16)
( 16)
< 15)
( 11)
( 19)
( 19)
( 19)
( 19)
( 16)
( 14)
< 4)
( 8)
( 10)
( 9)
( 2>
( 19)
( 19)
( 13)
( 3)
( ID
( 0)
500-
MEAN SEC
81
96
85
42
19
58
100
69
62
27
73
77
46
15
50
35
38
8 i
31 i
0 i
23 <
65 1
88 i
54 1
4 <
12 1
92 1
I 21)
( 25)
( 22)
( 11)
( S>
< 15)
( 26)
( 18)
( 16)
t 7)
( 19)
( 20)
t 12)
( 4)
( 13)
( 9)
( 10)
I 2)
t 8)
! 0)
[ 6)
I 17)
1 23)
[ 14)
I 1)
1 3)
! 24)
MEAN
CHLOrtA
73
100
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)
( 13)
( 2)
( 6)
( 24)
( 22)
< 3)
< 20)
( 23)
( 7)
( 8)
( 1>
( 14)
< 15)
( 4)
( 10)
( 18)
( 5)
( 16)
( 25)
I 12)
( 0)
< ID
( 21)
15-
MIN 00
15
77
73
0
12
62
62
96
46
85
69
100
19
54
8
90
4
38 t
33 i
81 l
33 I
23 I
27 I
90 1
42 (
50 <
62 1
( 4)
( 20)
( 19)
( 0)
( 3)
< 15)
( 15)
< 25)
< 12)
( 22)
( 18)
( 26)
( 5)
( 14)
( 2)
( 23)
( 1)
( 10)
1 8)
1 21)
I 8)
t 6)
I 7)
1 23)
; ID
! 13)
1 15)
OISS ORTiO P
42
90
50
58
13
4
79
69
96
0
100
85
27
8
23
73
58 i
46 i
19 1
37 <
37 1
79 1
65 1
58 (
13 t
31 I
90 (
( ID
( *3)
( 13)
( 14)
( 3)
( 1)
( 20)
< 18)
( 25)
( 0)
( 26)
( 22)
I 7)
( 2)
( 6)
I 19)
( 14)
1 12)
I 5)
! 9)
1 9)
I 20)
I 17)
[ 14)
: 3)
. 8)
23)
INjt
N'O
311
540
406
196
1*2
163
391
468
42B
16B
506
506
229
210
162
343
223
lt>5
217
241
174
389
448
363
75
216
415
-------
LAKES RANKED BY INDEX NOS.
RANK LAKE CODE LAKE SAME INDEX NO
1 4901 BEAR LAKE 540
^ 4911 NAVAJO LAKE 506
3 4910 MOON LAKE 506
4 4907 HUNTINOTON NORTH RESERVO 468
S 4922 STEINAKER RESERVOIR 448
6 4908 JOE'S VALLEY RESERVOIR 428
7 5605 FLAMING GORGE RESERVOIR 415
8 4902 LOWER BOWN'S RESERVOIR 406
9 4906 FISH LAKE 391
10 4921 STARVATION RESERVOIR 389
11 4923 TROPIC RESERVOIR 363
12 4915 PELICAN LAKE 343
13 0408 LAKE POWELL 311
14 4919 PRUESS RESERVOIR
-------
APPENDIX B
CONVERSION FACTORS
-------
CONVERSION FACTORS
Hectares x 2.471 = acres
Kilometers x 0.6214 = miles
Meters x 3.281 = feet
-4
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
OTTER CRK RES
TOTAL DRAINAGE AREA OF LAKE(SO KM)
984.2
MAY
SUB-DRAINAGE
TRIBUTARY AREA(SO KM) JAN FEB MAR APR
49UA1
4913A2
491301
4913ZZ
TOTAL DRAINAGE AREA OF LAKE * 984.2
SUM OF SUB-DRAINAGE AREAS * 984.2
MEAN MONTHLY FLOWS AND DAILY FLOWSEC
MEAN
984.2
854.7
0.0
129.5
0.028
0.425
0.99
0.008
0.028
0.934
1.13
0.020
0.028
1.189
1.13
0.020
0.878
0.878
2.27
0.099
2.180
0.068
2.55
0.085
3.115
0.020
1.13
0.071
4.248
0.031
0.85
0.028
3.681
0.093
0.71
0.008
2.520
0.096
0.99
0.008
0.340
0.102
0.99
0.008
0.057
0.119
0.99
0.008
0.028
0.311
0.99
0.008
1.437
0.352
1.23
0.031
SUMMARY
TOTAL FLOW IN « 19.37
TOTAL FLOW OUT = 17.13
TRIBUTARY MONTH YEAR
4913A1
MEAN FLOW DAY
4913A2
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
0.198
0.142
0.142
0.142
0.142
0.170
1.642
5.947
5.947
0.736
0.651
0.170
0.170
0.368
0.255
0.595
1.218
0.623
0.068
0.082
0.048
0.014
0.023
0.020
12
14
11
15
8
5
8
15
3
18
6
5
10
14
11
15
8
5
8
15
3
18
6
5
17
FLOW DAY
0.198
0.198
0.142
0.142
0.142
0.142
0.198
5.947
5.947
0.793
0.651
0.198
0.037
0.311
0.201
0.765
1.614
1.104
0.142
0.082
0.071
0.014
0.008
0.017
FLOW DAY
FLOW
0.198
17
0.034
-------
TRIBUTARY FLO* INFORMATION FOR UTAH 10/18/76
LAKE CODE 4913 OTTER CRK RES
MEAN MONTHLY FLO*S AND DAILY FLOtoS(CMS)
TRIBUTARY MONTH YEAR MEAN FLOW DAY FLOW DAY FLOW DAY FLOW
4913D1 11 74 1.557
12 7* 2.12*
1 75 2.265
2 75 2.549
3 75 3.115
4 75 2.832
5 75 2.549
6 75 0.0
7 75 0.142
8 75 0.0
9 75 0.0
10 75 0.0
4913ZZ 11 74 0.025
12 74 6.042
1 75 0.042
2 75 0.042
3 75 0.023
4 75 0.025
5 75 0.057
6 75 0.085
7 75 0.042
8 75 0.028
9 75 0.028
10 75 0.028
-------
APPENDIX D
PHYSICAL and CHEMICAL DATA
-------
ET RETRIEVAL DATE 76/08/12
491J01
39 10 11.0 112 01 13.0 3
OTTEK CREEK RESERVOIR
49031 UTAH
11EPALES
0031 FEET
2111202
DEPTH CLASS 00
DATE
FROM
TO
75/05/09
75/08/13
75/09/25
00010
TIME DEPTH WATER
OF TEMP
DAY FEET
11
11
11
11
15
15
15
15
09
09
09
09
45
45
45
45
15
15
15
15
15
15
15
15
0000
0005
0015
0027
0000
0005
0017
0023
0000
0005
0015
0021
CENT
8.
8.
7.
7.
18.
18.
18.
18.
18.
18.
18.
18.
4
5
3
2
9
9
7
2
8
5
1
0
00300
DO
MG/L
9.
9.
8.
9.
7.
8.
6.
4.
7.
7.
5.
6.
0
0
2
0
6
4
0
4
2
6
6
0
00077
TRANSP Ctv
SECCHl FIELD
INCHES Ml
24
70
48
94
TVT
i
'MHO
306
310
303
300
419
419
421
421
322
318
321
324
00400
PH
SU
8.65
8.65
8.65
8.70
8.70
8.75
8.70
8.50
9.00
8.90
8.80
8.90
00410
T ALK
CAC03
MG/L
256
288
256
258
186
187
188
190
171
171
174
171
00610
NH3-N
TOTAL
MG/L
0.040
0.030
0.030
0.030
0.020K
0.020K
0.020K
0.020
0.020K
0.020K
0.020K
0.020K
00625
TOT KJEL
N
MG/L
1.600
0.600
0.600
0.600
0.400
0.300
0.300
0.400
0.400
0.400
0.400
0.400
00630
N02&N03
N-TOTAL
MG/L
0.030
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
00671
PHOS-DIS
OHTHO
MG/L P
0.006
0.003
0.010
0.005
0.053
0.056
0.062
0.095
0.042
0.034
0.045
0.036
DATE
FROM
TO
75/05/09
75/08/13
75/09/25
TIME DEPTH
OF
DAY FEET
11 45 0000
11 45 0005
11 45 0015
11 45 0027
15 15 0000
15 15 0005
15 15 0017
15 15 0023
09 15 0000
09 15 0005
09 15 0015
09 15 0021
00665
PHOS-TOT
MG/L P
0.057
0.064
0.062
0.067
0.084
0.085
0.087
0.124
0.062
0.055
0.078
0.071
32217
CHLRPHYL
A
UG/L
16.1
10.7
8.5
00031
INCDT LT
REMN1NG
PERCENT
K VALUE KNOWN TO 8E
LtSS THAN INDICATED
-------
ST03ET
DATt 7t./03/12
491302
38 12 08.0 111 59 16.0 3
OTTE« CREEK RESERVOIR
49031 UTAH
150891
11EPALES 2111203
0024 FEET DEPTH CLASS 00
DATE
FROM
TO
75/05/09
75/08/13
75/09/25
DATE
FROM
TO
75/05/09
75/08/13
75/09/25
TIME
OF
DEPTH
DAY FEET
10 55
10 55
10 55
10 55
14 45
14 45
14 45
09 00
09 00
09 00
TIME
OF
DAY
10 55
10 55
10 55
10 55
14 45
14 45
14 45
09 00
09 00
09 00
0000
0005
0015
0020
0000
0005
0015
0000
0005
0015
DEPTH
FEET
0000
0005
0015
0020
0000
0005
0015
0000
0005
0015
00010
*ATER
TEMP
CENT
9.6
8.6
8.4
8.2
20.2
20.4
19.7
17.5
17.4
17.4
00665
PHOS-TOT
MG/L P
0.053
0.066
0.067
0.068
0.075
0.067
0.058
0.086
0.081
0.080
00300
DO
MG/L
9.
8.
8.
8.
8.
8.
7.
8.
7.
7.
32217
00077 00094
TRANSP CNDUCTVY
SECCHI FIELD
INCHES MICWOMHO
2 22
6
8
6
2 54
0
6
4 60
4
2
00031
455
466
456
464
412
415
406
313
316
309
00400
PH
su
8.60
8.60
8.60
8.60
8.90
8.90
8.90
8.90
9.00
9.00
00410
T ALK
CAC03
MG/L
284
226
242
256
179
179
181
169
166
167
00610 00625
NH3-N TOT KJEL
TOTAL N
MG/L
0
0
0
0
0
0
0
0
0
0
.030
.030
.020
.030
.020K
.020K
.020K
.020K
.020K
.020K
MG/L
0.500
0.400
0.400
0.400
0.700
0.700
0.300
0.600
0.600
0.400
CHLRPHYL INCDT LT
A
UG/L
13.
13.
8.
REMNING
PERCENT
0
4
9
— -
00630 00671
N02&N03 PnOS-L>IS
N-TOTAL ORTMO
MG/L MG/L P
0.020K
0.020K
0.020K
0.020
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.005
0.013
0.006
0.006
0.031
0.032
0.024
0.039
0.041
0.042
K VALUE KNOrfN TO BE
LESS THAN INDICATED
-------
. APPENDIX E
TRIBUTARY DATA
-------
STORET RETRIEVAL DATE 76/08/12
4913A1
38 10 00.0 112 01 «5.0 4
SEVIER RIVER
49 PIUTE CO H«Y MAP
0/OTTER CREEK RESERVOIR
OTTER CREEK RESERVOIR 0AM SPILLWAY
11EPALES 2111204
0000 FEET DEPTH CLASS 00
DATE
FROM
TO
74/11/10
74/12/14
75/01/11
75/02/15
75/03/08
75/04/05
75/05/08
75/05/17
75/06/15
75/07/03
75/08/18
75/09/06
75/10/05
TIME 1
OF
DAY 1
11 30
11 30
11 20
10 05
10 10
10 35
11 30
12 35
11 00
11 10
19 10
11 10
11 55
FEET
00630
N02&N03
N-TOTAL
MG/L
0.104
0.008
0.064
0.733
0.027
0.005
1.000
0.005
0.010
0.005
0.010
0.005
00625
TOT KJEL
N
MG/L
0.500
1.900
0.500
0.600
0.350
0.475
1.350
2.700
1.100
0.450
0.750
2.000
0.400
00610
NH3-N
TOTAL
MG/L
0.040
0.025
0.045
0.056
0.016
0.014
0.130
0.115
0.035
0.030
0.015
0.025
0.005
00671
PHOS-DIS
ORTHO
MG/L P
0.060
0.030
0.065
0.072
0.112
0.030
0.025
0.070
0.020
0.315
0.045
0.035
0.035
00665
PhOS-TOT
MG/L P
0.080
0.080
0.100
0.120
0.140
0.060
0.040
0.250
0.050
0.060
0.090
0.090
0.070
-------
STDRET RETRIEVAL DATE 76/08/12
DATE TIME DEPTH N02&N03
FROM OF
TO DAY FEET
74/11/10
74/12/14
75/01/11
75/02/15
75/03/08
75/04/05
75/05/08
75/05/17
75/06/15
75/07/03
75/08/18
75/09/06
75/10/05
12 25
11 15
11 00
09 43
10 45
12 20
11 15
12 15
10 30
11 25
17 20
11 00
12 15
4913A2
38 14 59.0 112 57 55.C 4
OTTER CREEK
49 7.5 ANGLE
T/OTTtR CREEK RESERVOIR 150B91
B*OG ON GRVL RD .6 MI E OF ANGLE
11EPALES 211120'*
0000 FEET DEPTH CLASS 00
0630 00625
•&N03 TOT KJEL
OTAL N
IG/L MG/L
0.580
0.617
0.296 (
0.184
0.220
0.030
.100
.500
.400
.500
.150
.250
4.200 3.450
0.015 2.700
1.300 0.600
1.200 1.200
0.900 1.900
0.900 0.200
0.810 1.100
00610 00671 00665
NH3-N PHOS-DIS PHOS-TOT
TOTAL ORTHO
MG/L
0.040
0.035
0.025
0.064
0.032
0.065
0.010
0.020
0.035
0.095
0.035
0.060
0.020
MG/L P
0.095
0.020
0.030
0.032
0.032
0.085
0.200K
0.025
0.070
0.070
0.075
0.085
MG/L P
0.170
0.040
0.060
0.090
0.080
0.270
0.270
0.100
0.080
0.100
0.075
0.120
K VALUE KNOrfN TO BE.
LESS THAN INDICATED
-------
STOSET RETRIEVAL OATE 76/08/13
DATE TIME DEPTH N02&N03
FROM OF
TO DAY FEET
74/11/10
74/13/14
75/01/11
75/02/15
75/03/08
75/04/05
75/05/08
75/05/17
75/06/15
75/07/03
75/08/18
75/09/06
75/10/05
11
11
11
10
10
10
11
12
11
11
16
11
11
45
40
30
10
20
40
40
10
00
00
54
30
35
491301
38 08 30.0 112 00 30.0 4
EAST FORK CANAL
49 PIUTE CO HKY MAP
T/OTTER CREEK RESERVOIR
BNK NEAR GAGE HOUSE 2.9 MI N OF ANTIMONY
11EPALES 2111204
0000 FEET DEPTH CLASS 00
0630
'&N03
OTAL
IG/L
0.464
0.600
0.576
0.448
0.502
0.420
0.345
0.150
0.480
0.125
C.175
0.410
0.250
00625
TOT KJEL
N
MG/L
0.500
0.900
0.300
1.100
1.700
0.900
1.600
0.500
1.350
2.100
1.000
0.200
0.700
00610
NH3-N
TOTAL
MG/L
0.020
0.030
0.015
0.040
0.056
0.015
0.270
0.210
0.035
0.600
0.240
0.010
0.080
00671
PHOS-DIS
ORTHO
MG/L P
0.020
0.025
0.035
0.040
0.040
0.030
0.050
0.116
0.065
0.050
0.050
0.035
0.020
00665
PHOS-TOT
MG/L P
0.030
0.060
0.080
0.160
0.200
0.130
0.300
0.230
0.140
0.110
0.085
0.035
0.040
------- |