U.S. ENVIRONMENTAL PROTECTION AGENCY
NATIONAL EUTROPHICATION SURVEY
WORKING PAPER SERIES
REPORT
ON
CASCADE RESERVOIR
VALLEY COUNTY
IDAHO
EPA REGION X
WORKING PAPER No, 777
CORVALLIS ENVIRONMENTAL RESEARCH LABORATORY - CORVALLIS, OREGON
and
ENVIRONMENTAL MONITORING & SUPPORT LABORATORY - LAS VEGAS, NEVADA
699-440
-------
REPORT
ON
CASCADE RESERVOIR
VALLEY COUNTY
IDAHO
EPA REGION X
WORKING PAPER No, 777
WITH THE COOPERATION OF THE
IDAHO DEPARTMENT OF HEALTH AND WELFARE
AND THE
IDAHO NATIONAL GUARD
JULY, 1977
-------
REPORT ON CASCADE RESERVOIR
VALLEY COUNTY, IDAHO
EPA REGION X
by
National Eutrophication Survey
Water and Land Quality Branch
Monitoring Operations Division
Environmental Monitoring & Support Laboratory
Las Vegas, Nevada
and
Special Studies Branch
Corvallis Environmental Research Laboratory
Con/all is, Oregon
Working Paper No. 777
OFFICE OF RESEARCH AND DEVELOPMENT
U.S. ENVIRONMENTAL PROTECTION AGENCY
July 1977
-------
CONTENTS
Page
Foreword i i
List of Idaho Study Lakes iv
Lake and Drainage Area Map v
Sections
I. Conclusions 1
II. Lake and Drainage Basin Characteristics 5
III. Lake Water Quality Summary ^ 7
IV. Nutrient Loadings 13
V. Literature Reviewed 19
VI. Appendices 20
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ii
FOREWORD
The National Eutrophicatlon Survey was Initiated 1n 1972 1n
response to an Administration commitment to Investigate the nation-
wide threat of accelerated eutrophicatlon to freshwater lakes and
reservoirs.
OBJECTIVES
The Survey was designed to develop, in conjunction with state
environmental agencies, information on nutrient sources, concen-
trations, 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 nonpoint source pollution abatement in lake water-
sheds.
ANALYTIC APPROACH
The mathematical and statistical procedures selected for the
Survey's eutrophicatlon 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
watershed 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,bj], and water quality monitoring
[§106 and §305(b)] activities mandated by the Federal Water
Pollution Control Act Amendments of 1972.
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Ill
Beyond the single lake analysis, broader based correlations
between nutrient concentrations (and loading) and trophic condition
are being made to advance the rationale and data base for refine-
ment of nutrient water quality criteria for the Nation's freshwater
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 the U.S. Environmental Protection
Agency and to augment plans implementation by the states.
ACKNOWLEDGMENTS
The staff of the National Eutrophication Survey (Office of
Research and Development, U.S. Environmental Protection Agency)
expresses sincere appreciation to the Idaho Department of Health
and Welfare for professional involvement, to the Idaho National
Guard for conducting the tributary sampling phase of the Survey,
and to those Idaho wastewater treatment plant operators who pro-
vided effluent samples and flow data.
The staff of the State of Idaho Department of Health and
Welfare, Division of Environment, provided invaluable lake docu-
mentation and counsel during the Survey, reviewed the preliminary
reports and provided critiques most useful in the preparation of
this Working Paper Series.
Major General James S. Brooks, Adjutant General of Idaho, and
Project Officer Major Vestal L. Baker, who directed the volunteer
efforts of the Idaho National Guardsmen, are also gratefully
acknowledged for their assistance to the Survey.
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IV
NATIONAL EUTROPHICATION SURVEY
STUDY LAKES
STATE OF IDAHO
LAKE NAME
American Falls Reservoir
Cascade Reservoir
Coeur d'Alene Lake
Dworshak Reservoir
Mauser Lake
Hayden Lake
Island Park Reservoir
Lake Lowell (Deer Flat Reservoir)
Magic Reservoir
Palisades Reservoir
Payette Lake
Lower Twin Lake
Upper Twin Lake
COUNTY
Bannock, Bingham, Power
Valley
Benewah, Kootenai
Clearwater
Kootenai
Kootenai
Fremont
Canyon
Blaine, Camas
Bonneville (Lincoln in WY)
Valley
Kootenai
Kootenai
-------
Little Payette
Lake
Map Location
CASCADE
RESERVOIR
CASCADE RESERVOIR
Tributary Sampling !Si
X Lake Sampling Site "
Sewage Treatment Facility
Land Subject to Inundation
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REPORT ON CASCADE RESERVOIR, IDAHO
STORE! NO. 1602
I. CONCLUSIONS
A. Trophic Condition:*
On the basis of Survey data, Cascade Reservoir is consid-
ered eutrophic, i.e., nutrient rich and highly productive.
Whether such nutrient enrichment is to be considered beneficial
or deleterious is determined by its actual or potential impact
upon designated beneficial water uses of each lake.
Chlorophyll a_ levels in the lake ranged from 4.1 yg/1 to
14.3 yg/1 with a mean of 8.1 yg/1. Potential for primary pro-
ductivity as measured by algal assay control yields was high.
Of the 13 Idaho lakes sampled in 1975, 4 had greater median total
phosphorus levels, 6 had greater median inorganic nitrogen values,
and 5 had greater median orthophosphorus levels than Cascade
Reservoir.
Survey limnologists reported moderate concentrations of algae
in the lake during August and September sampling, and severe
oxygen depression with hydrogen sulfide production was reported
during September at Station 01. Other studies (Idaho Department
of Water Resources et al. 1975; Idaho Department of Health and
Welfare, 1975 and 1976; Bureau of Reclamation, 1975) indicate
*See Appendix E.
-------
that seepage of shoreline recreational homes, and excessive algal
growths, low oxygen levels in deeper waters, minor fish kills,
and shoreline macrophyte.growths due to nutrient contamination
from agricultural runoff are problems of increasing significance
in Cascade Reservoir.
B. Rate-Limiting Nutrient:
Algal assay results indicate that Cascade Reservoir was limited
by available phosphorus during both spring and fall sampling
(06/04/75, 09/16/75)." The lake data suggest primary productivity
was limited by available nitrogen during all three sampling rounds.
C. Nutrient Controllability:
1. Point Sources -
Point sources were calculated to have contributed 3.8% of
the total phosphorus loading to Cascade Reservoir during the
sampling year. The city of McCall, discharging into the North
Fork Payette River, contributed this entire load. Wastes from
a fish hatchery on the North Fork Payette River, and raw domestic
discharges from the community of Donnelly also impact Cascade
Reservoir; however, annual nutrient contributions from these
sources are not known.
The annual phosphorus loading of 0.38 g P/m /yr is less
than Vollenweider'iS "eutrophic" level but greater than his
-------
proposed "oligotrophic" loading for a lake with such volume
and retention time. However, the lake is obviously eutrophic,
and removal of inputs from point and nonpoint sources would
probably be necessary to effect lake water quality improve-
ment. A waste treatment plant has recently been completed
at Donnelly and should substantially improve water quality
flowing from Boulder Creek into Cascade Reservoir. The
Bureau of Reclamation (1975) has also recommended monitoring
those lake areas affected by rapid development of recreational
homesites, and suggested a switch from use of individual
septic tanks to back-set sewage disposal lagoons to reduce
the impact of the rapidly expanding domestic development
around the lake.
2. Nonpoint sources -
Nonpoint sources, including precipitation, contributed
96.2% of the total phosphorus loading to Cascade Reservoir.
The Gold Fork River contributed 25.0% of the total load, the
North Fork Payette River, 21.3%, and Lake Fork Creek contributed
15.1%. Ungaged drainage areas were estimated to have con-
tributed 24.8% of the total phosphorus load.
Phosphorus export rates of all four tributaries to Cascade
Reservoir were higher than would be expected from nonpoint
-------
contribution alone (Section IV-D), and excessive algal growths
have been reported in most of them (Bureau of Reclamation,
1975). The Bureau has recommended that management practices
in the Cascade watershed be modified by reducing grazing
during spring high runoff periods and preventing cattle from
reaching the lake to help lower nutrient levels and micro-
organism counts in Cascade Reservoir.
-------
II. LAKE AND DRAINAGE BASIN CHARACTERISTICS
Lake and drainage basin characteristics are itemized below.
Lake surface area, mean depth and volume were provided by the
U.S. Geological Survey (USGS) (1972), and Martin and Hanson (1966).
Maximum depth was estimated on the basis of National Eutrophication
Survey (NES) sampling data. Tributary flow data were provided by
the Idaho District Office of the USGS. Outlet drainage area in-
cludes the lake surface area. Mean hydraulic retention time was
obtained by dividing the lake volume by mean flow of the outlet.
Precipitation values are estimated by methods as outlined in (NES)
Working Paper No. 175. A table of metric/English conversions is
included as Appendix A.
A. Lake Morphometry:
2
1. Surface area: 107.24 km
2. Mean depth: 8.1 meters
3. Maximum depth: 18.3 meters
4. Volume: 867.390 x 106 m3
5. Mean hydraulic retention time: 339 days
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B. Tributary and Outlet:
(See Appendix B for flow data)
1. Tributaries -
Drainage Mean flow
Name area (km?) (m3/sec)
A-2 North Fork Payette River 440.3 10.19
B-l Gold Fork River 388.5 5.91
C-l Boulder Creek 99.7 0.95
D-l Lake Fork Creek 198.4 3.35
Minor tributaries and
immediate drainage - 387.2 6.86
Totals 1514.1 27.26
2. Outlet - A-l North Fork
Payette River 1621.3 29.64
C. Precipitation:
1. Year of sampling: 77.7 cm.
2. Mean annual: 71.6 cm.
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III. LAKE WATER QUALITY SUMMARY
Cascade 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 five stations on the lake and from a number of depths at each
station (see map, page v). During each visit, depth-integrated
samples were collected from each station for chlorophyll a_ analysis
and phytoplankton identification and enumeration. During the first
and last visits, 18.9-liter depth-integrated samples were composited
for algal assays. Maximum depths sampled were 16.8 meters at
Station 01, 5.8 meters at Station 02, 8.5 meters at Station 03,
11.9 meters at Station 04, and 8.5 meters at Station 05. For a more
detailed explanation of NES methods, see NES Working Paper No. 175.
The results obtained are presented in full in Appendix C and
are summarized in III-A for waters at the surface and at the maximum
depth for each site. Results of the phytoplankton counts and
chlorophyll ^determinations are included in III-B. Results of the
limiting nutrient study are presented in III-C.
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CASCADE LAKE
STORET CODE 1602
6/
PHYSICAL AND CHEMICAL CHARACTERISTICS
( a/ 1/75 )
PA.AMF.TEM
TEMPERATURE (OEG
O.-l.S M OEPTM
MAX DEPTH**
DISSOLVED OXYGEN
0.-1.5 M DEPTH
MAX DEPTH**
N*
CENT)
10
5
("G/D
10
5
S***
12.1- 14.2
7.1- 12.1
9.0- 10.4
7.2- 9.0
MEDIAN
13.2
7.4
9.7
e.o
MAX
DEPTH
(METERS) *«
0.0-
1.5-
0.0-
1.5-
1.5
11.6
1.5
11.6
10
5
10
5
S««o
PANGE
16.0- 17.6
8.7- 16.1
4.6- 8.6
1.8- 7.0
= 5
MEDIAN
16.6
11.3
7.4
5.6
MAX
DEPTH
(METERS)
0.0-
4.3-
0.0-
4.3-
1.5
15.2
1.5
15.2
S«»» s 5
N* RANGE MEDIAN
10
5
10
5
18.1- 19.6
14.9- 18.3
8.0- 8.8
0.2- 8.8
18.8
16.8
8.4
3.6
MAX
DEPTH
RANGE
(MgTERS)
0.0- 1.5
4.6- 16.8
0.0- 1.5
4.6- 16.8
CONDUCTIVITY (UMHOS)
0.-1.5 M DEPTH
MAX DEPTH**
0
0
««»»«.»«»»«
«««o«-«»«»«
««•«<>»
*****
»«»«_<
****-*
nnxto
h****
10
5
16.- 35.
28.- 35.
29.
30.
0.0-
4.3-
1.5
15.2
9
5
32.- 34.
32.- 48.
33.
33.
0.0- 1.5
4.6- 16.8
PH (STANDARD UNITS)
O.-l.S M DEPTH
MAX DEPTH**
TOTAL ALKALINITY
0.-1.5 M DEPTH
MAX DEPTH**
TOTAL P (MG/L)
O.-l.S M DEPTH
MAX DEPTH**
DISSOLVED 0-- 16.8
O.(0- 1.5
4.<>- 16.8
0 • il^— 1.5
4.*- 16.8
0.*- 1.5
4.*- 16.8
0.!£— 1.5
4,ft— 16.8
SECCHI DISC (METEPS)
0.8- 1.2
1.1
1.8- 3.0 2.7
2.1- 3.4 3.0
• N = NO. OF SAMPLES
«* MAXIMUM DEPTH SAMPLED AT EACH SITE
»«« s = NO. OF SITES SAMPLED ON THIS DATE
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B. Biological Characteristics:
1. Phytoplankton -
Sampling
Date
06/04/75
08/01/75
09/16/75
Dominant
Genera
1. Asterionella
2. Dinobryon
3. Synedra
4. Centric diatom
5. Melosira
Other genera
Total
1.
2.
3.
4.
5.
Fraqilaria
Aphanizomenon
Melosira
Chroomonas
Aphanothece
1.
2.
3.
4.
5.
Other genera
Total
Aphanizomenon
Cryptomonas
Fragilaria
Chroomonas
Melosira
Other genera
Total
Algal
Units
per ml
5,069
870
605
151
151
417
7,263
1,206
827
276
138
103
111
2,827
979
367
245
82
82
40_
1,795
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10
2. Chlorophyll a_ -
Sampling Station Chlorophyll
Date Number (yg/1)
06/04/75 01 8.1
02 4.7
03 6.7
04 8.1
05 7.6
08/01/75 01 8:7
02 5.6
03 11.2
04 5.4
05 4.6
09/16/75 01 6.7
02 6.3
03 9.8
04 14.3
05 13.4
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11
C. Limiting Nutrient Study:
1. Autoclaved, filtered, and nutrient spiked
Spike (mg/1)
Ortho P
Cone.(mg/1)
a. 06/04/75 Stations 01-05
Control
0.05 P
0.05 P + 1.0 N
1.00 N
0.010
0.060
0.060
0.010
b. 09/16/75 Stations 01,04,05
Control
0.05 P
0.05 P + 1.0 N
1.00 N
Control
0.05 P
0.05 P +
1.00 N
0.010
0.060
0.060
0.010
Stations 02,03
0.010
0.060
1.0 N 0.060
0.010
Inorganic N
Cone, (mg/1)
0.030
0.030
1.030
1.030
0.120
0.120
1.120
1.120
0.085
0.085
1.085
1.085
Maximum Yield
(mg/1-dry wt.)
0.9
2.5
20.3
1.2
1.2
6.4
21.1
1.0
0.6
3.1
21.4
0.6
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12
2. Discussion -
The control yields of the assay alga, Selenastruin capri-
cornutum, indicate that the potential for primary production in
Cascade Reservoir was moderate to high during the spring and fall
samplings (06/04/75; 09/16/75). In all assays, the addition of
orthophosphorus alone produced a significant increase in yield
over that of the control, indicating phosphorus limitation. Note
that the addition of nitrogen alone did not result in any substan-
tial increase in yield over that of the control, and that maximum
growth increases were achieved with the simultaneous addition of
both nutrients.
The mean inorganic nitrogen to orthophosphorus ratios (N/P)
in the lake data were less than 8/1 on all sampling occasions,
suggesting primary limitation by nitrogen (a mean N/P ratio of
14/1 or greater generally reflects phosphorus limitation).
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13
IV. NUTRIENT LOADINGS
(See Appendix D for data)
For the determination of nutrient loadings, the Idaho 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 months of June and July when two samples were collected.
Sampling was begun in October, 1974, and was completed in September,
1975.
Through an interagency agreement, stream flow estimates for the
year of sampling and a "normalized" or average year were provided by
the Idaho District Office of the USGS for the tributary sites nearest
the lake.
In this report, nutrient loads for sampled tributaries were
determined by using a modification of a USGS computer program for
calculating stream loadings. Nutrient loads indicated for tributaries
are those measured minus known point source loads, if any.
Nutrient loadings for unsampled "minor tributaries and immediate
drainage" ("II" of USGS) were estimated by using the mean annual
2
nutrient loads, in kg/km /year, in Gold Fork River at Station B-l,
p
and multiplying the means by the ZZ area in km.
Nutrient loads for the McCall wastewater treatment plant were
calculated using estimated flows and provided monthly effluent
samples.
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A. Waste Sources:
1. Known municipal
Name
McCall
Pop.
Served
2500
14
Treatment
Stabilization
pond
Mean Flow
(m3/d x 1Q3)
0.946*
Receiving
water
North Fork
Payette River
2. Known industrial - None
*Estimated at 0.3785 nr/capita/day.
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15
B. Annual Total Phosphorus Loading - Average Year:
1. Inputs -
% of
Source kg P/yr total
a. Tributaries (nonpoint load) -
A-2 North Fork Payette River 8,620 21.3
B-l Gold Fork River 10,140 25.0
C-l Boulder Creek 2,195 5.4
D-l Lake Fork Creek 6,130 15.1
b. Minor tributaries and immediate
drainage (nonpoint load) - 10,065 24.8
c. Known municipal STP's -
McCall 1,520 3.8
d. Septic tanks* - <5 <0.1
e. Known industrial - None
f. Direct precipitation - 1.875 4.6
Totals 40,545 100.0%
2. Output - A-l North Fork Payette
River 25,985
3. Net annual P accumulation - 14,560
*Estimate based on 5 lakeshore residences and 1 park.
**Estimated (See NES Working Paper No. 175).
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16
C. Annual Total Nitrogen Loading - Average Year:
1. Inputs -
% of
Source kg N/yr total
a. Tributaries (nonpoint load) -
A-2 North Fork Payette River 171,490 32.9
B-l Gold Fork River 83,975 16.1
C-l Boulder Creek 20,420 3.9
D-l Lake Fork Creek 41,690 8.0
b. Minor tributaries and immediate
drainage (nonpoint load) - 83,635 16.0
c. Known municipal STP's -
McCall 4,600 0.9
d. Septic tanks* - 90 <0.1
e. Known industrial - None
f. Direct precipitation** - 115,775 22.2
Totals 521,675 100.0%
2. Outputs - A-l North Fork Payette
River 829,205
3. Net annual N export*** - 307,530
*Estimate based on 5 lakeshore residences and 1 park.
**Estimated (See NES Working Paper No. 175).
***Export probably due to unknown sources and/or sampling error.
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17
D. Mean Annual Nonpoint Nutrient Export by Subdrainage Area:
Tributary kg P/km2/yr kg N/km /yr
North Fork Payette River 20 389
Gold Fork River 26 216
Boulder Creek 22 205
Lake Fork Creek 31 210
E. Mean Nutrient Concentrations in Ungaged Streams:
Mean Total P Mean Total N
Tributary (mg/1) (mg/1)
E-l Rock Creek 0.034 0.486
F-l Mud Creek 0.052 0.939
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18
F. Yearly Loadings:
In the following table, the existing phosphorus loading is
compared to the relationship proposed by Vollenweider (1975).
Essentially, his "eutrophic" loading is that at which the receiving
waters would become eutrophic or remain eutrophic; his "oligotrophic"
loading is that which would result in the receiving water remain-
ing oligotrophic or becoming oligotrophic if morphometry permitted.
A "mesotrophic" loading would be considered one between "eutrophic"
and "oligotrophic."
Note that Vollenweider's model may not be applicable to water
bodies with very short retention times or in which light penetration
is severely restricted from high concentrations of suspended solids
in the surface waters.
Total Yearly
Phosphorus Loading
(g/m2/yr)
Estimated loading for Cascade Reservoir 0.38
Vollenweider's "eutrophic" loadings 0.58
Vollenweider's "oligotrophic" loading 0.29
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19
V. LITERATURE REVIEWED
Idaho Department of Health and Welfare. 1975. Idaho Water Quality
Status. Division of Environment, Boise, Idaho.
Idaho Department of Health and Welfare. 1976. Statewide Water Quality
Management Planning Report. Division of Environment, Bureau of
Water Quality, Boise, Idaho.
Idaho Department of Water Resources, Department of Health and Welfare,
Department of Fish and Game and Department of Budget, Policy Planning
and Coordination, 1975. Idaho Environmental Review, Boise, Idaho.
Martin, R.O.R. and Ronald L. Hanson. 1966. Reservoirs in the U.S.
Geological Survey Water Supply, Paper No. 1838. U.S. Government
Printing Office, Washington, D.C.
U.S. Bureau of Reclamation. 1975. Water Quality Studies Payette
River Basin and Cascade Reservoir. Southwest Idaho Water Manage-
ment Study, Regional Soil and Water Laboratory, Boise, Idaho.
U.S. Department of Interior, Geological Survey, 1972. Water Resources
Data for Idaho, Part I, Surface Water Records, Boise, Idaho.
U.S. Environmental Protection Agency. 1975. National Eutrophica-
tion Survey Methods 1973-1976. Working Paper No. 175. National
Environmental Research Center, Las Vegas, Nevada, and Pacific
Northwest Environmental Research Laboratory, Corvallis, Oregon.
Vollenweider, R. A. 1975. Input-Output Models With Special
Reference to the Phosphorus Loading Concept in Limnology.
Schweiz. Z. Hydrol. 37:53-84.
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20
VI. APPENDICES
APPENDIX A
CONVERSION FACTORS
-------
CONVERSION FACTORS
Hectares x 2.471 = 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 rneters/sec x 35.315 = cubic feet/sec
Centimeters x 0.3937 = inches
Kilograms x 2.205 - pounds.
Kilograms/square kilometer x 5.711 - Ibs/squarc mile
-------
APPENDIX B
TRIBUTARY FLOW DATA
-------
TRIBUTARY FLOW INFORMATION FOR IDAHO
OB/23/76
LAKE CODE 1612
CASCADE RESERVOIR
TOTAL DRAINAGE AREA OF LAKEJSQ
su9-o°AIMAGE
1621.3
NORMALIZED FLOWS(CMS)
TRIBUTARY
1602A1
1602*2
1602B1
1602C1
160201
1602Z7
AREAfSQ KM)
1621.3
440.3
388.5
99.7
19B.4
494.4
JAN
23.05
2.46
2.18
0.34
1.30
2.58
FEB
27.58
2.69
2.21
0.45
1.22
2.69V
MAR
27.47
2.72
2.49
1.25
1.10
4.02
APR
20.22
8.78
6.99
4.59
1.93
12.15
MAY
13.39
40.21
21.61
2.55
9.85
21.58
JUN
37.94
41.34
23.59
0.62
14.44
23.02
JUL
38.23
8.69
3.62
0.23
2.97
4.39
AU6
51.54
4.70
0.48
0.17
1.78
1.95
SEP
53.80
2.78
1.13
0.14
1.02
1.56
OCT
28.09
2.94
1.87
0.20
1.36
2.24
NOV
14.87
?.21
?.29
0.25
1.81
2.92
DEC
19.57
2.46
2.*6
0.57
1.44
3.17
MEAN
29.64
10.19
5.91
0.95
3.35
6.86
SUMMARY
TOTAL DRAINAGE AREA OF LAKE =
SUM OF SUB-DRAINAGE AREAS =
MEAN MONTHLY FLOWS AND DAILY FLOWS(CMS)
1621.3
1621.3
TRIBUTARY
1602A1
MONTH
YEAR
1602A2
10
11
12
1
2
3
4
5
6
7
a
9
in
11
12
i
2
3
4
5
6
7
8
9
74
74
74
75
75
75
75
75
75
75
75
75
74
74
74
75
75
75
75
75
75
75
75
75
,N FLOW
25.740
16.962
27.609
25.032
18.774
30.894
46.808
38.143
11.242
23.107
49.385
52.471
5.663
2.407
2.435
2.747
3.171
3.200
3.115
20.020
67.960
31.149
7.929
9.628
DAY
19
1 s
13
18
15
14
19
17
6
6
16
13
19
15
13
18
IS
14
18
17
6
6
16
13
FLOW DAY
5.352
23.531
29.166
21.634
13.960
28.289
46.440
35.962
13.451 22
8.099 20
53.519
53.519
4.248
2.294
2.209
2.917
3.596
2.718
2.832
23.786
69.376 22
65.129 20
12.233
10.109
FLOW
8.042
29.166
45.307
9.288
TOTAL FLOW IN
TOTAL FLOW OUT
FLOW
326.78
355.74
-------
e CODE 16P2
TRIBUTARY FLOW INFORMATION FOR IDAHO
ESERVOIR
OP/23/76
1602C1
160301
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
11
12
1
2
3
4
5
6
7
8
9
'*
?*
"r*-
~* ^
75
~T
~*5
i~_
T =
7&
75
75
7*
'w
74
75
75
75
75
75
75
75
75
75
7*
74
74
75
75
75
75
75
75
75
75
75
r DAILY FLOWS(CMS)
FLOW DAY
FLO« DAY
FLOW DAY
FLOW
0.793
0.878
0.963
5.833
3.596
2.718
4.9?7
11.836
25.542
13.281
2.917
1.388
0.142
0.170
0.170
0.340
0.311
8.637
4.361
6.853
1.274
1.388
0.708
0.170
0.595
0.623
0.623
0.623
0.595
0.906
2.067
3.710
1.671
0.821
0.708
0.651
15
13
Ifl
15
14
19
17
6
6
16
13
19
15
13
18
15
14
18
17
7
6
16
13
19
15
13
18
15
14
18
17
7
6
\f>
13
0.736
0.921
12.884
3.313
2.237
4.248
19.482
35.113 22
26.618 20
1.727
1.331
0.142
0.198
0.170
0.453
0.198
7.929
5.663
12.884
1.359 22
1.388 20
0.396
0.170
0.566
0.595
0.623
0.623
0.765
0.821
2.350
5.097
2.039 22
0.850 20
0.595
0.623
21.662
5.550
1.331
1.189
1.246
0.793
-------
APPENDIX C
PHYSICAL AND CHEMICAL DATA
-------
STORET RETRIEVAL DATE 76/08/?5
NATL EUTROPHICATION SURVEY
EPA-LAS VEGAS
DATE
FRO"
TO
75/06/04
75/08/01
75/09/16
TIME
OF
DAY
12 05
12 05
12 05
12 05
10 20
10 20
10 20
10 20
10 20
10 05
10 05
10 05
10 05
10 05
DEPTH
FEET
0000
0005
0015
0038
0000
0005
0020
0030
0050
0000
0005
0016
0035
0055
00010
WATER
TEMP
CENT
13.8
13.4
12.3
7.4
17.3
17.2
17.1
10.5
8.7
19.4
19.1
17.0
16.3
14.9
160201
44 31 57.0 116 03 09.0 3
CASCADE LAKE
16085 IDAHO
130791
IIEPALES 2111202
0042 FEET DEPTH CLASS 00
00300
DO
MG/L
10.4
9.4
9.4
7.2
7.5
7.0
7.0
4.0
1.8
8.0
8.0
5.8
4.0
0.2
00077
TRANSP
SECCHI
INCHES
47
84
126
00094
CNDUCTVY
FIELD
MICROMHO
29
29
33
36
30
34
31
32
48
00400
PH
SO
7.30
7.90
7.60
7.10
7.80
7.95
7.35
7.00
7.80
8.60
8.15
7.60
7.35
6.90
00410
T ALK
CAC03
MG/L
17
ia
21
22
19
22
21
22
22
21
21
19
20
21
00610
NH3-N
TOTAL
MG/L
0.030
0.030
0.040
0.060
0.030
0.040
0.040
0.070
0.030
0.030
0.040
0.050
0.140
0.400
00625
TOT KJEL
N
MG/L
0.600
0.400
0.400
0.400
0.200
0.400
0.400
0.300
0.300
0.300
0.300
0.200
0.300
0.700
00630
N028.N03
N-TOTAL
MG/L
0.020
0.020K
0.020K
0.020
0.020K
0.020K
0.020K
0.050
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
00671
PHOS-0'IS
OPTHO
MG/L P
0.014
0.015
0.009
0.015
0.009
0.019
0.012
0.017
0.011
0.003
0.005
0.004
0.011
0.118
DATE TIME DEPTH
FROM OF
TO DAY FEET
75/06X04 12 05 0000
12 05 0005
12 05 0015
12 05 0038
75/08/01 10 20 0000
10 20 0005
10 20 0020
10 20 0030
10 20 0050
75/09/16 10 05 0000
10 05 0005
10 05 0016
10 05 003?
10 05 0055
10665
IS-TOT
i/L P
0.038
0.044
0.045
0.058
0.019
0.024
0.021
0.027
0.057
0.026
0.029
0.024
0.037
0.247
32217
CHLRPHYL
A
UG/L
8.1
8.7
6.7
00031
INCDT LT
REMNING
PERCENT
K VALUE KNOWN TO BE LESS
THAN INDICATED
-------
STORET RETRIEVAL DATE 76/08/35
NATL EUTROPHICATION SURVEY
EPA-LAS VEGAS
DATE
FROM
TO
75/06/04
75/08/01
75/09/16
TIME DEPTH
OF
DAY FEET
14 10 0000
14 10 0005
09 15 0000
09 15 0005
09 15 0019
11 25 0000
11 25 0005
11 25 0015
00010
WATER
TEMP
CENT
12.5
13.1
16.4
16.5
11.3
18.8
18.6
18.3
160202
44 40 40.0 116 06 30.0 3
CASCADE LAKE
16065 IDAHO
130791
00300 00077 00094
DO TRANSP CNDUCTVY
SECCHI FIELD
MG/L INCHES MICROMHO
9.0 30
9.0
8.6 108
7.4
5.6
8.6 132
8.0
8.8
16
28
29
32
33
32
11EPALES 2111203
0012 FEET DEPTH CLASS 00
00400 00410 00610 00625 00630 00*71
PH T ALK NH3-N TOT KJEL N02&.N03 PHOS-DIS
CAC03 TOTAL N N-TOTAL 0»THO
SU
7.00
6.90
7.75
7.35
8.30
8.05
8.00
MG/L
15
14
14
13
15
17
17
16
MG/L
0.040
0.040
0.020
0.030
0.050_
0.020K
0.020K
0.020K
MG/L
0.300
0.200
0.200K
0.300
0.200
0.300
0.300
0.300
MG/L
0.0?0
0.020.
0.020K
0.020K
0.060
0.020K
0.020K
0.020K
MG/L P
0.009
0.015
0.016
0.008
0.009
0.002
0.002
0.002
DATE TIME DEPTH
FROM OF
TO DAY FEET
75/06/04 14 10 0000
14 10 0005
75/08/01 09 15 0000
09 15 0005
09 15 0019
75/09/16 11 25 0000
11 25 0005
11 25 0015
0665
S-TOT
/L P
0.035
0.030
0.030
0.030
0.036
0.035
0.032
0.032
32217
CHLRPHYL
A
UG/L
4.7
5.6
6.3
00031
INCDT LT
Rf-MNING
PERCENT
K VALUE KNOWN TO BE LESS
THAN INDICATED
-------
STORET RETRIEVAL DATE 76/08/25
NATL F.UTROPHICATION SURVEY
EPA-LAS VEGAS
DATE
FRO*
TO
75/06/04
75/08/01
75/09/16
0001
TIME DEPTH WATER
OF TEMP
DAY FEET
14
14
14
14
09
09
09
11
11
11
11
30
30
30
30
35
35
35
05
05
05
05
0000
0005
0015
0028
0000
0005
0014
0000
0005
0015
0024
CENT
13
13
8
7
16
16
16
18
18
18
17
0
.9
,1
.0
.2
.3
.2
.1
.9
.8
.2
.5
00300 00077 00094
DO TRANSP CNDUC
SECCHI FIELD
MG/L INCHES MICRO
13.9
13*7
8.0
7.2
16.3
16.2
16.1
18.9
18.8
18.2
17.5
10.0
9.4
8.8
8.0
7.4
7.2
7.0
8.4
8.6
8.6
7.6
44
108
108
160203
44 36 09.0 116 05 57.0 3
CASCADE LAKE
16085 IDAHO
130791
11EPALES
0032 FEET
2111202
DEPTH CLASS 00
4
VY
HO
32
35
30
33
32
31
32
00400
PH
su
7.60
8.00
7.40
7.40
7.60
8.00
7.85
8.50
8.40
7.90
8.50
00410
T ALK
CAC03
MG/L
14
12
16
15
13
16
17
15
14
14
16
00610
NH3-N
TOTAL
MG/L
0.030
0.030
0.040
0.040
0.020
0.0?0
0.020
0.020K
0.020K
0.020K
0.020
00625
TOT KJEL
N
MG/L
0.300
0.200
0.300
0.400
0.200
0.300
0.300
0.400
0.300
0.300
0.300
00630
NQ2&N03
N-TOT&L
MG/L
0.020*
0.020K
0.020K
0.020K
0.020K"
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
00671
PHOS-DIS
OPTH*)
MG/L P
0.016
0.008
0.017
0.030
0.009
0.009
0.008
0.004
0.003
0.002
0.002
DATE TIME DEPTH
FROM OF
TO DAY FEET
75/06/04 14 30 0000
14 30 0005
14 30 0015
14 30 0028
75/08/01 09 35 0000
09 35 0005
09 35 0014
75/09/16 11 05 0000
11 05 0005
11 05 0015
11 05 0024
0665
S-TOT
/L P
0.047
0.037
0.051
0.110
0.017
0.020
0.020
0.033
0.029
0.028
0.067
32217
CHLRPHYL
A
UG/L
6.7
11.2
9.8
00031
INCDT LT
RFMNING
PERCENT
K VALUE KNOWN TO BE LESS
THAN INDICATED
-------
STORE! RETRIEVAL DATE 76/08/25
NATL EUTROPHICATION SURVEY
EPA-LAS VEGAS
DATE
FRO"
TO
75/06/04
75/08/01
75/09/16
TIME
OF
DAY
14 50
14 50
14 50
14 50
10 00
10 00
10 00
10 00
10 25
10 25
-10 25
10 25
10 25
DEPTH
FEET
0000
0005
0015
0031
0000
0005
0020
0026
0000
0005
0015
0030
0039
00010
WATER
TEMP
CENT
13.0
12.6
12.0
7.1
16.7
16.0
16.6
14.9
19.5
19.6
18.3
16.4
16.3
160204
44 34 15.0 116 06 57.0 3
CASCADE LAKE
16085 IDAHO
130791
11EPALES
2111202
0035 FEET DEPTH CLASS 00
00300
DO
MG/L
9.6
9.8
9.4
8.4
7.8
7.?
6.2
5.2
8.4
8.4
8.0
4.8
3.6
00077
TRANSP
SECCHI
INCHES
45
120
120
00094
CNDUCTVY
FIELD
WICROMHO
29
31
35
35
33
33
31
32
34
00400
PH
SU
7.90
7.80
7.30
7.60
7.90
7.90
7.12
7.25
8.30
8.60
7.90
7.40
7.80
00410
T ALK
CAC03
MG/L
23
23
18
20
16
18
18
19
16
15
16
17
19
00610
NH3-N
TOTAL
MG/L
0.040
0.050
0.040
0.040
0.030
0.030
0.030
0.040
0.040
0.040
0.040
0.090
0.090
00625
TOT KJEL
N
MG/L
0.300
0.300
0.300
0.300
0.300
0.200
0.200
0.300
0.400
0.400
0.400
0.300
0.300
00630
N02&NO3
N-TOTAL
MG/L
0.020K
0.020K
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
09THO
MG/L P
0.017
0.020
0.017
0.020
0.008
0.007
0.007
0.009
0.013
0.006
0.003
0.008
0.012
00665 32217
DATE TIME DEPTH PHOS-TOT CHLRPHYL
FROM OF A
TO DAY FEET MG/L P UG/L
75/06/04 14 50 0000 0.040 8.1
14 50 0005 0.042
14 50 0015 0.044
14 50 0031 0.049
75/08/01 10 00 0000 0.016 5.4
10 00 0005 0.02?
10 00 0020 0.022
10 00 0026 0.024
75/09/16 10 25 0000 0.035 14.3
10 25 0005 0.032
10 25 0015 0.032
10 25 0030 0.034
10 25 0039 0.052
00031
INCDT LT
REMNING
PERCENT
K VALUE KNOWN TO BE LESS
THAN INDICATED
-------
STORET RETRIEVAL DATE 76/08/35
NATL EUTROPHICATION SURVEY
EPA-LAS VEGAS
DATE
FROM
TO
75/06/04
75/08/01
75/09/16
00010
TIME DEPTH WATER
OF TEMP
DAY FEET
15
15
15
15
10
10
10
10
09
09
09
09
15
15
15
15
45
45
45
45
45
45
45
45
0000
0005
0015
0026
0000
0005
0015
0028
0000
0005
0015
0021
CENT
14.2
13.1
11.3
7.5
17.6
17.5
17.4
10.2
18.1
18.1
17.1
16.8
160305
44 30 40.0 116 04 50.0 3
CASCADE LAKE
16085 IDAHO
1307P1
11EPALES
2111202
0030 FEET DEPTH CLASS
00300
DO
MG/L
10.0
9.8
9.2
7.6
8.0
4.6
4.3
7.0
8.6
8.8
6.6
2.4
00077
TRANSP
SECCHI
INCHES
46
72
84
0009*
CNDUCTVY
FIELD
MICROMHO
30
29
36
28
33
32
31
33
00400
PH
su
8.60
8.15
7.60
7.30
7.70
8.00
7.30
7.90
7.50
7.50
7.30
6.95
00410
T ALK
CAC03
MG/L
21
18
16
22
17
17
16
18
19
20
19
22
00610
NH3-N
TOTAL
MG/L
0.040
0.040
0.040
0.050
0.030
0.030
0.050
0.080
0.020K
0.020K
0.040
0.100
00
00625
TOT KJEL
M
MG/L
0.400
0.300
0.300
0.300
0.300
0.400
0.400
0.400
0.400
0.400
0.300
0.300
00630 00671
N02&N03 PHOS-DIS
N-TOTAL OBTHO
MG/L MG/L P
0.020K
0.020K
0.020K
0.020K
0.030
0.020K
0.020K
0.030
0.020
0.020K
0.020K
0.020K
0.014
0.013
0.016
0.027.
0.015
0.014
0.012
0.017
0.006
0.004
0.004
0.006
DATE
FROM
TO
75/06/04
75/08/01
75/09/16
TIME
' OF
DAY
15 15
15 15
15 15
15 15
10 45
10 45
10 45
10 45
09 45
09 45
DEPTH
FEET
0000
0005
0015
0026
0000
0005
0015
0028
0000
0005
09 45 0015
09 45
0021
00665
PHOS-TOT
MG/L P
0.040
0.037
0.041
0.058
0.021
0.021
0.046
0.023
0.034
0.041
0.037
0.030
32217 00031
CHLRPHYL INCDT LT
A RFMNING
UG/L PERCENT
7.6
4.6
13.4
K VALUE KNOWN TO BE LESS
THAN INDICATED
-------
APPENDIX D
TRIBUTARY AND WASTEWATER
TREATMENT PLANT DATA
-------
STORE! RETRIEVAL DATE 76/08/25
NATL FUTROPHICATION SURVEY
EPA- LAS VEGAS
DATE TIME DEPTH N02&N03
FROM OF
TO DAY FEET
74/10/19
74/11/15
74/12/13
75/01/18
75/02/15
75/03/14
75/04/19
75/05/17
75/06/06
75/06/22
75/07/06
75/07/20
75/08/16
75/09/14
12
17
17
10
16
15
08
13
18
20
16
07
12
00
30
00
00
45
30
15
00
00
00
00
30
00
1602A1
44 31 30.0 116 02 40.0 4
N FK PAYETTE RIVER
16 15 CASCADE
0/CASCADE RESERVOIR 130791
8RDG BELO DAM .6 HI N OF DWNTWM CASCADE
11EPALES 2111304
0000 FEET DEPTH CLASS 00
0630
&N03
OTAL
G/L
0.040
0.336
0.010
0.016
0.016
0.055
0.065
0.005
0.010
0.005
0.020
0.035
0.015
0.030
00625
TOT KJEL
N
MG/L
0.500
0.200
0.900
1.000
0.350
1.200
4.300
0.700
0.600
0.200
0.400
0.500
0.500
00610
NH3-N
TOTAL
MG/L
0.035
0.025
0.025
0.030
0.040
0.020
0.030
0.065
0.020
0.027
0.010
0.035
0.005
0.030
00671
PHOS-DIS
ORTHO
MG/L P
0.010
0.005
0.010
0.010
0.008K
0.010
0.020
0.005
0.010
0.005
0.010
0.010
0.010
0.030
00665
PHOS-TOT
MG/L P
0.035
0.025
0.020
0.020
0.020
0.030
0.020
0.040
0.040
0.050
0.020
0.020
0.030
0.050
K VALUE KNOWN TO BE LESS
THAN INDICATED
-------
STOBET RETRIEVAL DATE 76/08/35
NATL EUTROPHICATION SURVEV
EPA- LAS VEGAS
DATE TIME DEPTH N02J.N03
FROM OF
TO DAY FEET
74/10/19
74/11/15
74/12/13
75/01/18
75/02/15
75/03/14
75/04/18
75/05/17
75/06/06
75/06/22
75/07/06
75/07/20
7?/08/16
75/09/13
15
15
14
13
07
11
13
14
16
12
18
13
16
15
00
00
00
00
30
15
15
00
30
00
00
00
30
00
1602A2
44 47 35.0 116 06 30.0 4
N FK PAYETTE RIVER
16 VALLEY CO H*Y HP
T/CASCAOE RESERVOIR
SEC RD BRDG 6 MI NW OF DONNELLY
11EPALES 2111204
0000 FEET DEPTH CLASS 00
30630
'J.N03
FOTAL
«.G/L
0.096
0.288
0.312
0.296
0.024
0.010
0.230
0.100
0.015
0.010
0.015
0.030
0.010
0.040
00625
TOT KJEL
N
MG/L
0.100
0.100K
0.300
0.700
0.900
0.400
0.750
0.800
0.200
0.850
0.100
0.150
0.250
0.300
00610
NH3-N
TOTAL
MG/L
0.015
0.050
0.035
0.075
0.032
0.025
0.040
0.045
0.015
0.035
0.025
0.030
0.010
0.010
00671
PHOS-DIS
ORTHO
MG/L P
0.010
0.015
0.025
0.020
0.008
0.005K
0.040
0.015
0.005
0.005K
0.010
0.010
0.045
00665
PHOS-TOT
MG/L P
0.020
0.020
0.040
0.050
0.030
0.010K
0.060
0.070
0.027
0.030
0.020
0.020
0.020
0.045
K VALUE KNOWN TO BE LESS
THAN INDICATED
-------
STORE! RETRIEVAL DATE 76/08/25
NATL EUTROPHICATION SURVEY
EPA- LAS VEGAS
DATE TIME DEPTH N02&N03
FROM OF
TO DAY FEET
75/01/18
75/02/15
75/03/14
75/04/19
75/05/17
75/06/06
75/06/22
75/07/06
75/07/20
75/08/16
75/09/13
15
14
14
14
08
14
17
18
16
11
12
00
00
30
30
40
00
00
00
50
00
30
160281
44 42 20.0 116 46 30.0 4
GOLD FORK RIVER
16 15 CASCADE
T/CASCADE RESERVOIR 130793
BNK 3.5 MI S£ OF DONNELLY
11EPALES 2111204
oooo FEET DEPTH CLASS oo
0630
8.N03
OT&L
G/L
0.048
0.048
0.030
0.060
0.085
0.025
0.010
0.005
0.035
0.125
0.04Q
00625
TOT KJEL
N
MG/L
0.200
0.400
0.400
0.750
0.650
0.500
0.400
0.300
0.200
0.400
0.100
00610
NH3-N
TOTAL
MG/L
0.012
0.016
0.015
0.025
0.025
0.0?5
0.030
0.010
0.035
0.100
0.005K
00671
PHOS-DIS
ORTHO
MG/L P
0.010
0.016
0.015
0.015
0.025
0.010
0.005
0.010
0.015
0.050
0.050
00665
PHOS-TOT
MG/L P
0.020
0.050
0.030
0.030
0.100
0.160
0.090
0.020
0.020
0.060
0.050
K VALUE KNOWN TO BE LESS
THAN INDICATED
-------
STORET RETRIEVAL DATE 76/08/35
NATL EUTROBHICATION SURVEY
EPA- LAS VEGAS
DATE TIME DEPTH N02&.N03
FROM OF
TO DAY FEET
74/10/19
74/11/15
74/12/13
75/01/18
75/02/15
75/03/14
75/04/18
75/05/17
75/06/07
75/06/22
75/07/06
75/07/20
75/08/16
75/09/13
13
16
15
14
09
16
11
09
15
16
17
16
13
13
30
45
00
30
00
15
00
00
00
00
00
00
00
00
1602C1
4* 43 08.0 116 04 35.0 4
BOULDER CREEK
16 15 CASCADE
T/CASCADE RESERVOIR 130791
RR BRDG 1 MI S OF DONNELLY
11EPALES 2111204
0000 FEET DEPTH CLASS 00
)0630
'S.N03
FOTAL
«G/L
0.024
0.064
0.064
0.144
0.136
0.060
0.09Q
0.010
0.010
0.005
0.010
0.010
0.005
0.030
006?5
TOT KJEL
N
MG/L
0.300
0.100
0.500
0.400
0.700
0.500
1.250
1.150
0.250
0.650
0.450
0.500
0.500
0.450
00610
NH3-N
TOTAL
MG/L
0.015
0.015
0.020
0.045
0.072
0.045
0.045
0.065
0.015
0.025
0.020
0.030
0.030
0.005
00671
PHOS-DIS
ORTHO
MG/L P
0.035
0.040
0.030
0.030
0.040
0.065
0.040
0.030
0.025
0.035
0.050
0.075
0.070
0.085
00665
PHOS-TOT
MG/L P
0.055
0.050
0.050
0.050
0.070
0.080
0.100
0.070
0.080
0.080
0.070
0.110
0.110
0.090
-------
STORET RETRIEVAL DATE 76/08/35
NATL EUTROPHICATION SURVEY
EPA- LAS VEGAS
DATE TIME DEPTH N02R.N03
FROM OF
TO DAY FEET
74/10/19
74/11/15
74/12/13
75/01/18
75/02/15
75/03/14
75/04/18
75/05/17
75/06/07
75/06/22
75/07/06
75/07/20
75/08/16
75/09/13
14
16
13
10
15
13
12
09
16
11
13
11
15
17
15
30
00
45
00
00
45
30
20
00
00
00
00
45
160301
44 46 30.0 116 05 00.n 4
LAKE FORK CREEK
16 VALLEY CO HKY HP
T/CASCADE RESERVOIR
SEC RD BRDG .4 MI W OF JCT w H*Y 55
11EPALES 2111304
oooo FEET DEPTH CLASS oo
0630
S.N03
OTAL
G/L
0.016
0.056
0.032
0.096
0.104
0.090
0.060
0.075
0.035
0.020
0.010
0.005
0.005
0.030
00625
TOT KJEL
N
MG/L
0.200
0.100K
0.400
0.100
0.600
0.600
0.700
0.450
0.350
0.200
0.100
0.150
0.300
0.200
00610
NH3-N
TOTAL
MG/L
0.005
0.015
0.035
0.015
0.025
0.020
0.090
0.035
0.030
0.020
0.015
0.020
0.400
0.005K
00671
PHOS-OIS
ORTHO
MG/L P
0.005K
0.005
0.005K
0.005K
0.008K
0.005
0.005
0.010
0.005K
0.005K
0.005
0.015
0.010
0.045
00665
PHOS-TOT
MG/L P
0.005
0.005
0.010
0.010K
0.010
0.020
0.010K
0.050
0.040
0.030
0.020
0.020
0.052
K VALUE KNOWN TO BE LESS
THAN INDICATED
-------
STORET RETRIEVAL DATE 76/08/25
NATL EUTROPHICATION SURVEY
EPA- LAS VEGAS
1602E1
44 39 50.0 116 06 35.0 4
ROCK CREEK
16 15 CASCADE
T/CASCADE RESERVOIR 130791
SEC RD BROG 1 MI NE RT 15 JCT AT DOMELLV
11EPALES 2111204
0000 FEET DEPTH CLASS 00
DATE
FROM
TO
74/10/19
74/11/15
74/12/13
75/01/18
75/02/15
75/03/14
75/04/18
75/05/17
75/06/07
75/06/22
75/07/06
75/07/20
75/08/16
75/09/13
00630 00625
TIME DEPTH N02&N03 TOT KjEL
OF N-TOTAL N
DAY FEET
16
15
14
13
11
14
12
15
16
14
15
16
14
08
14
00
30
30
45
00
40
10
on
00
00
00
00
00
00
00
MG/L
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
024
056
096
112
135
120
085
130
040
005
010
040
015
005
002
MG/L
0.
0.
0.
0.
0.
0.
0.
1.
0.
0.
0.
0.
0.
0.
0.
200
100K
100
100
800
200
800
100
150
050K
100
300
800
550
300
00610 00671 00665
NHS-N PHOS-DIS PHOS-TOT
TOTAL ORTHO
MG/L
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
035
017
010
010
032
015
030
045
015
020
005
025
020
015
MG/L
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
P
015
015
010
010
025
020
010
020
010
010
015
030
025
030
015
MG/L P
0.015
0.015
0.010
0.020
0.030
0.030
0.020
0.090
0.060
0.030
0.030
0.040
0.030
0.060
0.025
K VALUE KNOWN TO BE LESS
THAN INDICATED
-------
STORE! RETRIEVAL DATE 76/08/35
NATL EUTROPHICATION SURVEY
EPA- LAS VEGAS
1602F1
44 43 40.0 116 06 30.0 4
MUD CREEK
16 15 CASCADE
T/CASCADE RESERVOIR 130791
LGHT OTY RO PROG 2 Ml WUH OF DONNELLY
11EPALES 2111204
0000 FEET DEPTH CLASS 00
DATE
FROM
TO
74/10/19
74/11/15
74/12/13
75/01/18
75/02/15
75/03/14
75/04/18
75/05/17
75/06/07
75/06/22
75/07/20
75/08/16
75/09/13
00630 00625
TIME DEPTH N026.N03 TOT KJEL
OF N-TOTAL N
PAY FEET
14
16
14
14
12
15
11
15
15
14
16
09
13
45
00
50
00
30
30
30
30
30
30
00
30
30
MG/L
0
0
0
0
0
0
0
0
0
0
0
0
0
.160
.304
.464
.504
.464
.440
.310
.440
.115
.055
.080
.060
.080
MG/L
0.
0.
0.
0.
0.
1.
1.
1.
0.
0.
0.
0.
0.
100
100K
400
400
700
100
600
150
500
700
400
650
400
00610 00671 00665
NH3-N PHOS-DIS PHOS-TOT
TOTAL ORTHO
MG/L
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
020
040
015
035
064
070
180
055
025
035
015
010
020
MG/L
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
P
010
010
010
015
016
020
035
025
020
010
035
025
020
MG/L P
0.020
0.010
0.020
0.020
0.040
0.060
0.100
0.110
0.060
0.060
0.070
0.070
0.040
It VALUE KNOWN TO BE LESS
THAN INDICATED
-------
STORET RETRIEVE. DATE 76/08/35
NATL EUTROPHICATION SURVEY
EP«- L*S VEGAS
1602AA PD1602AA
44 54 00.0 116 09 00.0 4
MCCALL
16 VALLEY CO MAP
T/CASCADE RES
NF PAYETTE RIVER
P002500
11EPALES 2141204
0000 FEET DEPTH CLASS 00
DATE
FROM
TO
75/01/13
75/02/26
75/04/14
75/05/12
75/06/09
75/08/12
75/09/08
75/10/14
75/11/12
75/12/08
TIME OEPTM
OF
DAY FEET
09 00
09 00
08 15
08 30
08 00
08 00
08 00
08 00
08 00
00630
NO?f.N03
N-TOTAL
MG/L
0.080
0.080
0.560
0.200
0.100
0.250
0.375
0.200
0.175
0.100
006?5
TOT KJEL
N
MG/L
17.000
18.500
13.500
6.400
4.900
7.600
9.600
12.000
17.000
24.500
00610
NH3-N
TOTAL
MG/L
9.100
13.000
0.150
1.500
1.450
1.800
2.000
2.900
5.200
6.400
00671
PHOS-DIS
ORTHO
MG/L P
4.700
5.040
0.210
0.970
1.550
3.400
4.000
4.300
4.000
4.050
00665
PHOS-TOT
MG/L P
5.400
5.600
4.400
1.400
2.100
3.800
5.200
5.000
5.600
5.450
50051 50053
FLOW CONDUIT
RATE FLOW-MGD
INST MOD MONTHLY
-------
APPENDIX E
PARAMETRIC RANKINGS OF LAKES
SAMPLED BY NES IN 1975
STATE OF IDAHO
Mean or median values for six of the key parameters evaluated
in establishing the trophic conditions of Idaho lakes sampled are
presented to allow direct comparison of the ranking, by parameter,
of each lake relative to the others. Median total phosphorus, median
inorganic nitrogen and median dissolved orthophosphorus levels are
expressed in mg/1. Chlorophyll a_ values are expressed in yg/1.
To maintain consistent rank order with the preceding parameters,
the mean Secchi disc depth, in inches, is subtracted from 500.
Similarly, minimum dissolved oxygen values are subtracted from 15
to create table entries.
-------
LAKE DATA TO BE USED IN RANKINGS
LAKE
CODE LAKE NAME
1601 AMERICAN FALLS RESERVOIR
1602 CASCADE LAKE
1603 LAKE COEUR O'ALENE
1604 DHORSHAK RESERVOIR
1605 MAUSER
1606 HAYDEN LAKE
1607 ISLAND PARK RESERVOIR
1608 LAKE LOWELL
1609 MAGIC RESERVOIR
1610 PALISADES RESERVOIR
1611 LOWER PAYETTE
1612 LOWER TWIN LAKES
1613 UPPER TWIN LAKES
MEDIAN
TOTAL P
0.105
0.032
0.017
0.010
0.028
0.010
0.03*
0.070
0.062
0.024
0.013
0.016
O.C117
MEDIAN
INORG N
0.080
0.060
0.040
0.080
0.075
0.040
0.050
0.070
0.130
0.080
0.060
0.050
0.045
500-
MEAN SEC
463.800
415.067
380.348
401.866
366.286
243.500
391.778
477.111
400.750
345.428
234.000
370.000
369.143
MEAN
CHLOKA
15.379
8.081
10.391
2.420
11.112
2.787
9.322
25.389
7.322
2.067
4.600
2.318
4.986
15-
MIN 00
14.700
14.800
12.200
7.400
14.800
11.800
12.800
14.600
14.700
12.800
9.600
13.600
8.200
MEDIAN
DISS ORTMO P
0.035
0.009
0.005
0.009
0.013
0.003
0.012
0.015
0.020
0.007
0.007
0.009
0.004
-------
PERCENT OF LAKES WITH HIGHER VALUES (NUMBER OF LAKES WITH HIGHER VALUES)
LAKE
COOE LAKE NAME
1601 AMERICAN FALLS RESERVOIR
1603 CASCADE LAKE
1603 LAKE COEUR D'ALENE
1604 DWORSHAK RESERVOIR
1605 HAUSER
1606 HAYOEN LAKE
1607 ISLAND PARK RESERVOIR
1608 LAKE LOWELL
1609 MA6IC RESERVOIR
1610 PALISADES RESERVOIR
1*11 -LOWER PAYETTE
1613 LOWER TWIN LAKES
1613 UPPER TWIN LAKES
MEDIAN
TOTAL P
0 (
33 (
67 (
96 (
42 <
96 (
25 (
8 (
17 (
50 <
83 <
75 (
58 (
0)
4)
8)
11)
5)
11)
3)
1)
2)
6)
10)
9)
7)
MEDIAN
INOHG N
17 (
54 (
96 <
17 (
33 (
96 (
71 (
42 <
0 (
17 (
-54 C
71 (
83 (
1)
6)
11)
1)
4)
11)
8)
5)
0)
1)
6)
8)
10)
500-
MEAN SEC
P
17
50
25
75
92
42
0
33
83
100
58
67
( 1)
( 2) -
( 6)
( 3)
( 9)
< 11)
( 5)
( 0)
( 4)
( 10)
( 12)
( 7)
( 8)
MEAN
CHLORA
8
42
25
83
17
75
33
0
50
100
67
92
58
( 1)
( 5)
( 3)
( 10)
( 2)
( 9)
< 4)
( 0)
( 6)
( 12)
( 8)
( 11)
( 7)
15-
MIN DO
21
4
67
100
4
75
54
33 1
21 1
54 1
83 1
42 1
92 (
( 2)
( 0)
( 8)
( 12)
I 0)
t 9)
( 6)
[ 4)
[ 2)
I 6)
t 10)
! 5)
; n>
MEDIAN
DISS OHTHO P
0
50
83 '
50 <
25 i
100 i
33 I
17 1
8 (
75 (
67 (
50 I
92 (
( 0)
( 5)
I 10)
1 5)
t 3)
t 12)
[ 4)
! 2)
: i)
9)
: 8)
5)
11)
------- |