U.S. ENVIRONMENTAL PROTECTION AGENCY
NATIONAL EUTROPHICATION SURVEY
WORKING PAPER SERIES
REPORT
ON
ECHO RESERVOIR
SUWITCOUNIY
UTAH
ERA REGION VI11
WORKING PAPER No,
CORVALLIS ENVIRONMENTAL RESEARCH LABORATORY - CORVALLIS, OREGON
and
ENVIRONMENTAL MONITORING & SUPPORT LABORATORY - LAS VEGAS, NEVADA
-------
REPORT
ON
ECHO RESERVOIR
SUWIT COUNTY
UTAH
EPA REGION VI11
WORKING PAPER No, 838
WITH THE COOPERATION OF THE
UTAH STATE DIVISION OF HEALTH
AND THE
UTAH NATIONAL GUARD
OCTOBER, 1977
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CONTENTS
Page
Foreward ii
List of Utah Study Lakes and Reservoirs iv
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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1i
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 [§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.
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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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1v
NATIONAL EUTROPHI CATION SURVEY
STUDY LAKES AND RESERVOIRS
STATE OF UTAH
NAME
Bear
Deer Creek
Echo
Fish
Flaming Gorge
Huntington
Joes Valley
Lower Downs
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
Utntah
Weber
.Ptute
Cache
Garfteld, Kane, San
Juan, UT; Coconino, AZ
Mi Hard
Juab, Sanpete
Duchesne
Uintah
Garfteld
Utah
Box Elder
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41°00-
Map Location
Utah
ECHO RESERVOIR
Tributary Sampling Site
X Lake Sampling Site
Sewage Treatment Facility
o
I
10 Km.
_j
Scale
5 Mi.
40°45'-
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ECHO RESERVOIR
STORE! NO. 4904
I. CONCLUSIONS
A. Trophic Condition
Survey data indicate that Echo Reservoir is eutrophic. It
ranked twenty-sixth in overall trophic quality when the 27 Utah
lakes and reservoirs sampled in 1975 were compared using a com-
bination of six parameters*. Eighteen of the water bodies had
less and one had the same median total phosphorus, 22 had less
and one had the same median dissolved orthophosphorus, 19 had
less median inorganic nitrogen, 13 had less mean chlorophyll a_,
and 21 had greater mean Secchi disc transparency. Marked depres-
sion of dissolved oxygen with depth occurred at sampling station
1 in August and September.
B. Rate-Limiting Nutrient:
The algal assay results are not considered representative of
conditions in the reservoir at the times the samples were collected.
However, the reservoir data indicate nitrogen limitation at both
stations in May and September and at station 1 in August. Phos-
phorus limitation is indicated at station 2 in August.
C. Nutrient Controllability:
1. Point sources—It is calculated that the only known point
source contributed 25.4% of the total phosphorus load to Echo Reser-
voir during the sampling year.
* See Appendix A.
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The present phosphorus loading of 2.50 g/m2/yr is twice
that proposed by Vollenweider (Vollenweider and Dillon, 1974) as
a eutrophic loading (see page 11). While even complete removal
of phosphorus at the Coalvilie wastewater treatment plant would
still leave a loading of 1.87 g/m2/yr, it is possible that a high
degree of phosphorus control at the plant would result in persistent
phosphorus limitation in the reservoir and at least some improve-
ment in trophic condition.
2. Non-point sources--It is estimated that non-point sources
contributed 74.6% of the total phosphorus load to the reser-
voir during the sampling year. The Weber River contributed 53.7%
of the total load; Chalk Creek, 11.8%; and the minor tributaries
and immediate drainage contributed an estimated 6.2%.
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II. RESERVOIR AND DRAINAGE BASIN CHARACTERISTICS*
tt
A. Morphometry :
1. Surface area: 5.95 kilometers2.
2. Mean depth: 15.3 meters.
3. Maximum depth: 33.5 meters.
4. Volume: 91.278 x 106 m3.
5. Mean hydraulic retention time: 134 days (based on outflow).
B. Tributary and Outlet:
(See Appendix C for flow data)
1. Tributaries -
Drainage Mean flow
Name area (km2)* (mVsec)*
Weber River 1,134.4 5.640
Chalk Creek 655.3 1.740
Unnamed Creek D-l 15.5 0.080
Minor tributaries &
immediate drainage - 84.7 0.227
Totals 1,889.9 7.687
2. Outlet -
Weber River 1,895.9** 7.860
C. Precipitation***:
1. Year of sampling: 42.0 centimeters.
2. Mean annual: 35.1 centimeters.
t Table of metric conversions—Appendix B.
tt Sudweeks, 1974; Anonymous, 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
Echo 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 two or more depths at two stations on the reservoir (see map,
page v). During each visit, a single depth-integrated (4.6 m or
near bottom 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 24.4 meters at station
1 and 8.5 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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A.
Of -"YSICAL
C-iA*ACTE*ISTICS
CODE 4904
EC-iO
PARAMETER
TEMP
DISS OXY (MG/L)
CNOCTVY (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)
INOSG N (MG/L)
TOTAL N (MG/L)
CHLRPYL A (Ur,/L)
SECCHI (METERS)
1ST SAILING < 5/12/75)
? SITES
MEAN MEOIAN
6.6
9.?
451.
«.3
188.
0.035
0.016
0.060
0.020
0.300
C.OeO
0.410
8.5
0.4
9.6
- 10,4
- 502.
8.5
- 266.
- 0.144
- 0.041
- 0.160
- 0.050
- 0.700
- 0.210
- 0.760
- 13.4
0.6
8.3
9.9
4t>7.
8.4
?24.
0.065
0.02?
0.101
0.033
0.471
0.1 3*
0.573
10.9
0.5
9.3
10.0
455.
8.4
222.
0.051
0.017
0.110
0.030
0.400
C.I 30
0.560
10.9
0.5
2ND SAMPLING ( 3/ 7/75)
2 SITES
KANGt
10.3
1.0
265.
8.2
140.
.016
.005
.020
.100
.300
.120
.320
4.2
1.8
- 22.0
- 11.2
- 297.
8.9
- 181.
- 0.199
- 0.170
- 0.260
- 0.530
- 0.600
- 0.790
- 0.860
4.7
1.3
MEAN
18.0
5.6
287.
8.6
153.
0.046
0.026
0.086
0.220
0.420
0.306
0.506
4.4
1.8
MEDIAN
18.4
5.2
292.
8.5
151.
0.027
0.006
0.035
0.185
0.400
0.280
0.470
4.4
1.8
3RD SAMPLING ( 9/18/75)
d SITES
RANGE
13.0 - 14.9
1.6 - 7.8
310. - 341.
7.9 - a.5
170. - 175.
0.038 - 0.137
0.005 - 0.027
0.030 - 0.200
0.020 - 0.030
0.200 - 0.400
0.060 - 0.230
0.230 - 0.600
2.6 - 8.4
1.1 - 1.8
MEAN MEDIAN
14.2 14.2
5.6 6.5
334. 338.
8.2 8.3
172. 172.
0.064 0.049
0.012 0.006
0.091 0.060
0.025 0.025
0.275 0.250
0.080
0.345
5.5
U.116
0.366
5.5
1.5
1.5
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B. Biological Characteristics:
1. Phytoplankton -
Sampling
Date
05/12/75
08/07/75
09/18/75
2. Chlorophyll a^ -
Sampli ng
Date
05/12/75
08/07/75
09/18/75
Dominant
Genera
1.
2.
3.
4.
5.
1.
2.
3.
4.
5.
1.
2.
3.
4.
5.
Chroomonas (?) sp.
Centric diatoms
Fragilaria sp.
Cryptomonas sp.
Asterionella sp.
Total
Chroomonas (?) sp_.
Cryptomonas sp.
Fragilaria sp.
Asterionella sp.
Ankistrodesmus sp.
Total
Fragilaria sp.
Chroomonas (?) sp_.
Cryptomonas sp.
Aphanizomenon sp.
Asterionella sp.
Total
Station
Number
1
2
1
2
1
2
Algal Units
per ml
9,336
1,221
1,103
906
118
12,684
305
153
61
31
31
581
1,756
Chlorophyll a
(yg/1)
8.5
13.4
4.2
4.7
2.6
8.4
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7
C. Limiting Nutrient Study:
Significant nutrient changes occurred in the samples during
shipment from the field to the laboratory, and the algal assay
results are not considered representative of conditions in the
reservoir at the times the samples were taken (05/12/75 and
09/18/75).
The reservoir data indicate nitrogen limitation at both
sampling stations in May and September; i.e., the mean inorganic
nitrogen/orthophosphorus ratios were 10/1 or less, and nitrogen
limitation would be expected. The August data indicate nitrogen
limitation at station 1 but phosphorus limitation at station 2
(the mean N/P ratios were 8/1 and 27/1, respectively).
Nitrogen limitation, as indicated by the in-reservoir nitrogen
to phosphorus ratios, does not necessarily mean that the trophic
condition of the reservoir can be improved by controlling nitrogen
inputs. In many cases, the apparent condition of nitrogen-limitation
results from excessive phosphorus input from point sources and is
often accompanied by a corresponding increase in primary production.
In such cases, the reversal of the enriched condition depends upon
phosphorus control, not nitrogen control.
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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). Sampling was begun
in November, 1974, and was completed in May, 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" ("II" of U.S.G.S.) were estimated using the mean concentrations
in the unnamed stream at station D-l and the mean annual II flow.
The operator of the Coalville wastewater treatment plant provided
monthly effluent samples, and corresponding flow data were provided by
S. E. Sowby, Mountainland Association of Governments, Provo.
A. Waste Sources:
1. Known municipal* -
Name
Coalville
Pop. Mean Flow Receiving
Served Treatment (m3/d) Water
1,000 tr. filter 660.3** Echo Resei
2. Known industrial - None
* Hopkins, 1975.
** Sowby, 1977.
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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) -
Weber River 8,005 53.7
Chalk Creek 1,755 11.8
Unnamed Creek D-l 325 2.2
b. Minor tributaries & immediate
drainage (non-point load) - 925 6.2
c. Known municipal STP's -
Coalville 3,785 25.4
d. Septic tanks - Unknown ?
e. Known industrial - None
f. Direct precipitation* - 105 0.7
Total 14,900 100.0
2. Outputs -
Reservoir outlet - Weber River 10,165
3. Net annual P accumulation - 4,735 kg.
* See Working Paper No. 175.
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10
C. Annual Total Nitrogen Loading - Average Year:
1. Inputs -
kg N/
Source y_r
a. Tributaries (non-point load) -
Weber River 215,390
Chalk Creek 64,585
Unnamed Creek D-l 5,140
b. Minor tributaries & immediate
drainage (non-point load) - 14,580
c. Known municipal STP's -
Coalville 10,495
d. Septic tanks - Unknown ?
e. Known industrial - None
f. Direct precipitation* - 6,425
Total 316,615
2. Outputs -
Reservoir outlet - Weber River 178,965
3. Net annual N accumulation - 137,650 kg.
D. Non-point Nutrient Export by Subdrainage Area:
Tributary kg P/km2/yr
% of
total
68.0
20.4
1.6
4.6
3.3
2.1
100.0
Weber River
Chalk Creek
Unnamed Creek D-l
7
3
21
kg N/km2/yr
190
99
332
* See Working Paper No. 175.
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11
E. 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 2.50 0.80 53.2 23.1
Vollenweider phosphorus loadings
(g/m2/yr) based on mean depth and mean
hydraulic retention time of Echo Reservoir:
"Dangerous" (eutrophic loading) 1.22
"Permissible" (oligotrophic loading) 0.61
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12
LITERATURE REVIEWED
Anonymous, 1975. Water resources data for Utah. Part 1. Surface
water records. U.S. Geol. Sury., Salt Lake City.
Hopkins, Clyde M., 1975. Treatment plant questionnaire. UT Bur.
of Env. Health, Salt Lake City.
Sowby, Stephen E., 1977. Personal communication (corrected flow data
for Coalville STP). Mountainland Assoc. of Govts., Provo.
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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13
VI. APPENDICES
APPENDIX A
LAKE RANKINGS
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LAKE UATA TO BE USED IN BANKINGS
LAKE
CuOE LAKE NAME
o«.oa LAKE POWELL
4501 BEAh LAKE
4902 LOWER BOWN'S RESERVOIR
49»>3 DEER CREEK RESERVOIR
*904 ECHO RESERVOIR
4905 LYNN RESERVOIR
4906 FISH LAKE
4907 HUNTINGTON NORTH REEERVO
4908 JOE'S VALLEY RESERVOIR
4909 MINERSVILLE RESERVOIR
4910 HOON LAKE
4911 NAVAJO LAKE
4912 NEWCASTLE RESERVOIR
4913 OTTER CREEK RESERVOIR
4914 PANAUITCH LAKE
4915 PELICAN LAKE
4916 PINEVIEW RESERVOIR
4917 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 NILLARO BAY RESERVOIR
5605 FLAMING GORGE RESERVOIR
MEDUN
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
INO*G N
O.<»10
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
0.050
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
CHLOPA
3.G81
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 oo
13.300
9.200
9.400
14.800
14.003
10.400
10.400
7.600
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
ME J I at*
DISS 0«T-tO P
0.007
O.o03
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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OF LAKES WITM HIGHER VALJE5 (NUMBER OF LAKES «ITH HIGH£« VALUES)
LA
! ID
-> *• f
15-
MI\ CO
15 (
77 (
73 (
0 (
12 (
62 (
62 (
96 (
46 (
85 <
69 (
100 (
19 <
54 (
8 (
90 (
4 (
38 (
33 (
81 (
33 (
23 (
27 (
90 (
42 (
50 (
r 1
4)
20)
19)
0)
3)
15)
15)
25)
12)
22)
18)
26)
5)
14)
2)
23)
1)
10)
8)
21)
8)
6)
7)
23)
ID
13)
• C'
MtJlAr, INjt
0!S^ 03T-J P ".'0
42 (
90 (
50 (
58 (
13 (
4 (
79 (
69 (
96 (
0 (
100 <
85 (
27 (
8 (
23 (
73 (
58 (
46 (
19 (
37 (
37 (
79 (
65 (
58 (
13 (
31 (
r-f
ill
^3)
13)
!•»)
3)
1)
20)
18)
25)
0)
26)
22)
7)
2)
6)
19)
14)
12)
5)
9)
9)
20)
17)
14)
3)
8)
•>•? •
311
5nO
406
196
152
163
391
46B
428
168
506
506
229
210
162
343
223
le>5
217
241
174
389
448
363
75
216
,« • •"
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LAKES RANKED BY INDEX NOS.
RANK LAKE CODE LAKE NAME INDEX NO
1 4901 BEAR LAKE 540
£ 4911 NAVAJO LAKE 506
3 4910 MOON LAKE 506
4 4907 HUNTINCTON NORTH RESERVO 468
5 4923 STEINAKER RESERVOIR 448
6 4908 JOE'S VALLEY RESERVOIR 428
7 5605 FLAMING GORGE RESERVOIR 415
8 4902 LOtfCR BOkN'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 (GARRIS 241
15 4912 NEWCASTLE RESERVOIR 229
16 4916 PINEVIEW RESERVOIR 223
17 4918 PORCUPINE RESERVOIR 217
18 4925 WILLARO BAY RESERVOIR 216
19 4913 OTTER CREEK RESERVOIR 210
20 4903 DEER CREEK RESERVOIR 196
21 4920 SEVIER BRIDGE RESERVOIR 174
22 4909 MINERSVILLE RESERVOIR 168
23 4917 PIUTE RESERVOIR 165
24 4905 LYNN RESERVOIR 163
25 4914 PANQUITCH LAKE 162
26 4904 ECHO RESERVOIR 152
27 4924 UTAH LAKE 75
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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 FLO* INFORMATION FOR UTAH
10/18/76
LAKE CODE 4904
EOO RES
TOTAL DRAINAGE AREA OF LAKE(SO KM)
SUB-DRAINAGE
TRIBUTARY AREA(SQ KM)
JAN
FE8
1895.9
MAR
APR
MAY
NORMALIZED FLOWS(CMS)
JUN JUL AUG
SEP
OCT
NOV
DEC
MEAN
4904A1
4904A2
4904C1
4904D1
4904ZZ
1895.9
1134.4
655.3
15.5
90.6
3.11
3.40
0.54
0.036
0.057
3.11
3.40
0.59
0.026
0.085
2.83
4.53
0.99
0.042
0.142
5.95
7.08
3.17
0.142
0.425
18.69
11.33
7.33
0.340
0.963
20.95
14.44
4.45
0.198
0.566
12.46
5.66
1.10
0.042
0.142
10.19
3.96
0.57
0.028
0.085
6.51
3.40
0.48
0.028
0.057
3.40
3.40
0.51
0.028
0.057
3.68
3.68
0.57
0.028
0.085
3.11
3.40
0.54
0.028
0.057
7.86
5.64
1.74
0.080
0.227
SUMMARY
1895.9
1895.9
TOTAL DRAINAGE AREA OF LAKE a
SUM OF SUB-DRAINAGE AREAS =
MEAN MONTHLY FLOWS AND DAILY FLOWSCCMS>
TRIBUTARY MONTH YEAR MEAN FLOW DAY FLOW DAY
TOTAL FLOW IN = 92.20
TOTAL FLOW OUT a 94.01
4904A1
4904A2
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
0.651
0.680
0.680
3.398
4.814
17.273
14.442
23.786
22.087
11.893
13.309
7.362
5.125
3.681
4.021
3.908
3.936
5.493
7.844
30.101
19.029
4.049
4.078
4.701
10
21
4
2
23
5
10
21
4
2
23
5
FLOW DAY
FLOW
0.623
0.680
0.680
0.736
5.663
11.327
5.097
2.237
2.350
5.239
3.879
3.823
-------
TRIBUTARY FLO* INFORMATION FOR UTAH
10/18/76
LAKE CODE 4S04
ECHO RES
MEAN MONTHLY FLOWS AND DAILY FLOWS(CMS)
TRIBUTARY
4904C1
490401
4904ZZ
MONTH YEAR
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 FLO* DAY
0.765
0.651
0.623
0.595
0.934
1.246
7.985
13.535
3.851
0.906
1.189
1.019
0.028
0.028
0.028
0.028
0.042
0.057
0.368
0.623
0.170
0.042
0.057
0.042
0.113
0.085
0.085
0.085
0.113
0.170
1.048
1.756
0.510
0.113
0.142
0.142
10
21
4
2
23
5
FLOW DAY
0.708
0.736
0.566
0.623
0.963
0.991
FLOW DAY
FLOW
-------
APPENDIX D
PHYSICAL and CHEMICAL DATA
-------
5T03ET RETRIEVAL DATE 76/C3/12
490401
<*Q 57 51.0 111 25 j7.0 3
EChO RESERVOIR
49043 UTAH
OATE TIME DEPTH
FROM OF
TO DAY FEET
75/05/12
75/08/07
75/09/18
15
15
15
15
15 15
15 15
15 15
16 05
16 05
16 05
16 05
16 05
16 05
15 50
15 50
15 50
15 50
15 50
0000
0005
0015
0035
0068
0000
0005
0015
0030
0060
0080
0000
0005
0024
0045
0071
00010
WATER
TEMP
CENT
9.3
9.3
6.9
6.8
6.6
21.5
19.3
17.5
16.2
13.1
10.3
14.3
14.2
13.9
13.3
13.0
11E»ALES
2111202
0072 FEET DEPTH CLASS
00300
DO
*G/L
10.4
10.4
10.0
9.2
9.4
6.8
4.8
4.4
4.4
3.8
1.0
6.8
6.2
4.8
1.6
2.8
00077
TRANSP
SECCHI
INCHES
24
72
72
00094
CNDUCTVY
FIELD
MICROMHO
455
456
454
451
451
297
289
281
273
265
291
337
310
333
338
330
00400
PH
SU
8.50
8.50
8.35
8.30
8.40
8.90
8.50
8.40
8.35
8.45
8.20
8.50
8.40
8.10
7.95
7.90
00410
T ALK
CAC03
MG/L
250
246
266
222
198
150
152
154
150
156
181
171
170
172
174
175
00610
NH3-N
TOTAL
MG/L
0.030
0.020
0.020
0.040
0.050
0.280
0.100
0.250
0.140
0.200
0.530
0.020K
0.020K
0.020K
0.020K
0.030
00
00625
TOT KJEL
N
MG/L
0.700
0.400
0.300
0.400
0.400
0.300
0.300
0.300
0.300
0.400
0.600
0.300
0.300
0.200
0.400
0.400
00630
N02&N03
N-TOTAL
MG/L
0.060
0.060
0.110
0.130
0.160
0.020K
0.020
0.050
0.120
0.230
0.260
0.060
0.060
0.130
0.180
0.200
00671
PhOS-DIS
ORTHO
MG/L P
0.017
0.016
0.016
0.025
0.017
0.006
0.006
0.005
0.005
0.031
0.170
0.005
0.006
0.014
0.027
0.024
DATE
FROM
TO
75/05/12
75/08/07
75/09/18
TIME DEPTH
OF
DAY FEET
15 15 0000
15 15 0005
15 15 0015
15 15 0035
15 15 0068
16 05 0000
16 05 0005
16 05 0015
16 05 0030
16 05 0060
16 05 0080
15 50 0000
15 50 0005
15 50 0024
15 50 0045
15 50 0071
00665
PHOS-TOT
MG/L P
0.051
0.048
0.036
0.035
0,056
0.024
0.029
0.021
0.016
0.04*
0.199
0.043
0.038
0.070
0.137
0.079
32217 00031
CHLRPHYL INCDT LT
A REMNING
UG/L PERCENT
8.5
4.2
2.6
-------
ET RETRIEVAL DATE 76/OS/12
490402
<»0 56 13.0
ECHO
49043 UTAH
111 24 12.0 3
lltPALES 2111202
0011 FEET DEPTH CLASS 00
DATE
FROM
TO
75/05/12
75/08/07
75/09/18
TIME DEPTH
OF
DAY FEET
15 35 0000
15 35 0005
16 20 0000
16 20 0005
16 20 0015
16 20 0028
16 15 0000
16 15 0005
16 15 0011
00010
WATER
TEMP
CENT
9.6
9.3
22.0
21.9
21.3
17.3
14.9
14.9
14.9
00300 00077
DO TRANSP
SECCHI
MG/L INCHES
10.0
9.6
6.6
7.4
11.2
5.6
7.6
7.8
7.4
7
P
I
S
14
72
44
00094
CNOUCTVY
FIELD
MICROMHO
502
502
297
292
293
295
339
341
340
00400
PH
su
8.50
8.45
8.60
8.85
8.89
8.45
8.30
8.40
8.40
00410
T ALK
CAC03
MG/L
197
188
149
140
144
157
172
173
172
00610
NH3-N
TOTAL
MG/L
0.030
0.040
0.140
0.160
0.170
0.230
0.030
0.030
0.030
00625
TOT KJEL
N
MG/L
0.600
0.500
0.400
0.500
0.500
0.600
0.200
0.200
0.200
00630
N02&N03
N-TOTAL
MG/L
0.060
0.130
0.020K
0.020
0.020K
0.100
0.040
0.030
0.030
00671
PHOS-OIS
ORTHO
MG/L P
0.021
0.041
0.012
0.006
0.006
0.009
0.007
0.006
0.006
DATE
FROM
TO
75/05/12
75/08/07
75/09/l«
TIME DEPTH
OF
DAY PEET
15 35 0000
15 35 0005
16 20 0000
16 20 0005
16 20 0015
16 20 0028
16 IS 0000
16 15 0005
16 15 0011
00665
PHOS-TOT
MG/L P
0.083
0.144
0.033
0.026
0.025
0.047
0.049
0.050
0.049
32217
CHLRPHYL
A
UG/L
13.4
4.7
8.4
00031
INCOT LT
REMNING
PERCENT
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
APPENDIX E
TRIBUTARY AND WASTEWATER
TREATMENT PLANT DATA
-------
RETRIEVAL DATE 76/08/12
DATE TIME DEPTH N02&N03
FROM OF
TO DAY FEET
74/11/10 10 35
74/12/21 07 30
75/01/04 13 15
75/02/02 12 45
75/03/23 11 00
75/04/05 11 30
75/05/14 09 30
4S04A1
41 58 00.0 111 26 10,0 4
»CS£*
49 7.5 COALVILLE
0/ECHO RESERVOIR 150791
GAGE STATN .5 MI BELO* ECHO DAM
11EFALES 2111204
0000 FEET DEPTH CLASS 00
0630
S.N03
OTAU
IG/L
0.085
0.112
0.232
0.152
0.165
0.150
0.110
00625
TOT KJEL
N
MG/L
0.800
0.500
0.400
0.400
0.300
0.550
1.100
00610
NH3-N
TOTAL
MG/L
0.055
0.025
0.015
0.088
0.050
0.070
0.300
00671
PHOS-OIS
ORTHO
MG/L P
0.023
0.010
9.020
0.024
0.015
0.010
0.007
00665
PHOS-TOT
MG/L P
0.030
0.030
0.060
0.050
0.030
0.060
0.030
-------
STORET RETRIEVAL DATE 76/03/12
DATE TIME DEPTH N02&N03
FROM OF
TO DAY FEET
7<*/ll/10 11 40
74/12/21 09 00
75/01/0* 14 00
75/02/02 13 30
75/03/33 12 00
75/04/05 13 00
75/05/14 11 00
4904A2
40 53 49.0 111 24 05.0 <»
*E8E* RIVER
49 7.5 COALVILLE
T/ECHO RESERVOIR
bSDG ON LGHT OTY HO 1.5 M S OF COALVILLE
11EPALES 2111204
0000 FEET DEPTn CLASS 00
0630
!&N03
OTAL
IG/L
0.120
0.248
0.200
0.192
0.230
0.190
0.250
00625
TOT KJEL
N
MG/L
0.900
2.000
0.500
0.200
0.450
0.600
2.400
00610
NH3-N
TOTAL
MG/L
0.055
0.027
0.045
0.024
0.030
0.055
0.045
00671
PHOS-DIS
ORTHO
MG/L P
0.022
0.020
0.025
0.016
0.015
0.015
0.055
00665
PHOS-TOT
MG/L P
0.030
0.030
0.030
0.030
0.070
0.080
-------
STOSET RETRIEVAL DATE 76/38/12
0&TE TIME DEPTH N02&K03
FROM OF
TO DAY FEET
74/11/10 10 55
74/12/21 08 00
75/01/04 13 30
75/03/02 13 00
75/03/23 11 30
75/04/05 12 00
75/05/14 10 20
4904C1
40 55 1480 111 24 07.0 4
CriALK C3EEK
49 7.5 CO&LVILLt
T/ECHO RESERVOIR
US 169 8RDG .2 Ml N OF JCT * ST RT 133
11EPALES 2111204
0000 FEET DEPTH CLASS 00
0630
&K03
OTAL
IG/L
0.288
0.336
0.384
0.330
0.200
0.080
0.420
00625
TOT KJEL
N
HG/L
0.900
1.800
0.300
0.200
0.200
0.400
2.400
00610
NH3-N
TOTAL
MG/L
0.030
0.025
0.005
0.016
0.020
0.020
0.140
00671
PHOS-DIS
ORTHO
MG/L P
0.010
0.005
0.005
0.016
0.010
0.005K
0.050
00665
PHOS-TOT
MG/L P
0.010
0.020
0.010
0.020
0.070
0.060
K VALUE KNOKN TO BE
LESS THAN INDICATED
-------
STDKET RETRIEVAL DATE 76/08/12
DATE TIME DEPTH N02&N03
FROM OF
TO DAY FEET
74/11/10 12 05
74/12/12 09 30
75/01/04 14 40
75/02/02 14 15
75/03/23 12 15
75/04/20 13 30
75/05/14 11 30
490^01
40 55 13.0 111 24 f2.0 4
UNNAMED STREAM
49 7.5 COALVILLE
T/ECrtO RESERVOIR
BRDG ON LGHT OTY RO 2 MI M OF COALVILLE
11EPALES 2111204
0000 FEET DEPTH CLASS 00
0630
S.N03
OTAL
G/L
1.280
1.360
1.320
0.650
1.400
1.250
1.350
00625
TOT KJEL
N
MG/L
0.600
0.400
0.400
0.500
0.400
0.950
2.200
00610
NH3-N
TOTAL
MG/L
0.020
0.020
0.020
0.040
0.015
0.135
0.155
00671
PHOS-DIS
ORTHO
MG/L P
0.050
0.085
0.070
o.oao
0.055
0.045
0.005
00665
PMOS-TOT
MG/L P
0.060
0.110
0.130
o.iao
0.230
0.150
0.040
-------
STORE!
RIEVas. DATE* 76/53/12
DATE Tlf^E DEPTH N02&N03
FROM OF
TO DAY FEET
75/01/15
75/04/10
75/05/02
75/05/29
75/06/24
75/07/02
75/09/09
75/10/30
75/12/16
15 35
12 30
14 40
15 00
19 30
14 30
14 00
12 00
12 00
490421 TF49Q42J
4§ 56 00.0 111 24 00.0 4
COALVILLE
49 7.5 COALVILLE
Q/EChQ RES*
ECHO RES.
HEPALES 2141204
QOOO FEET DEPTH CLASS 00
POOIOCO
063®
I&N03
OTAL
IG/L
0.400
9.309
0.350
0.660
2.750
5.000
1.700
1.300
0.900
00625
TOT KJEL
N
MG/L
24.000
28.000
27.000
15.500
6.500
9.795
8e700
21.000
26.000
OC6EC
MH3-N
TOTAL
MG/L
0.400K
9.100
5.750
3.600
0.025K
0.025K
0.025K
5.500
9,600
00671
PHOS-DIS
ORTHO
MG/L P
4.800
3.409
3.750
2.200
1.700
1.350
1.880
4.000
3.750
00665
PHOS-TOT
MG/L P
8.400
9.800
11.000
10.000
3.560
2.050
4.600
6.600
8.000
50651
FLO*
RATE
INST MGD
0.150
9.050
0.600
0.750
0.670
0.800
0.432
0.100
0.270
50053
CONDUIT
FLO*-MGD
MONTHLY
0.600
0.650
0.700
0.650
0.650
0.432
o.ioa
0.260
K VALUE KNOWN TO BE
LESS THAN INDICATED
------- |