U.S. ENVIRONMENTAL PROTECTION AGENCY
NATIONAL EUTROPHICATION SURVEY
WORKING PAPER SERIES
REPORT
ON
5REEN IWTAIN RESERVOIR
SIMT COUNTY
COLORADO
EPA REGION VIII
WORKING PAPER No, 771
CORVALLIS ENVIRONMENTAL RESEARCH LABORATORY - CORVALLIS, OREGON
and
ENVIRONMENTAL MONITORING & SUPPORT LABORATORY - LAS VEGAS, NEVADA
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REPORT
ON
5REEN ITOTAIN RESERVOIR
SIMT COUNTY
COLORADO
EPA REGION VIII
WORKING PAPER No, 771
WITH THE COOPERATION OF THE
COLORADO DEPARTMENT OF HEALTH
AND THE
COLORADO NATIONAL GUARD
JULY, 1977
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CONTENTS
* Page
Foreward ii
List of Colorado Study Lakes and Reservoirs iv
Lake and Drainage Area Map v
Sections
I. Conclusions 1
II. Lake and Drainage Basin Characteristics 4
III. Lake Water Quality Summary 5
IV. Nutrient Loadings 9
V. Literature Reviewed ' 14
VI. Appendices . 15
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ii
FOREWORD
The National Eutrophication Survey was initiated in 1972 in
response to an Administration commitment to investigate the nation-
wide threat of accelerated eutrophication to freshwater lakes and
reservoirs.
OBJECTIVES
The Survey was designed to develop, in conjunction with state
environmental agencies, information on nutrient sources, concentrations,
and impact on selected freshwater lakes as a basis for formulating
comprehensive and coordinated national, regional, and state management
practices relating to point-source discharge reduction and non-point
source pollution abatement in lake watersheds.
ANALYTIC APPROACH
The mathematical and statistical procedures selected for the
Survey's eutrophication analysis are based on related concepts that:
a. A generalized representation or model relating
sources, concentrations, and impacts can be constructed.
b. By applying measurements of relevant parameters
associated with lake degradation, the generalized model
can be transformed into an operational representation of
a lake, its drainage basin, and related nutrients.
c. With such a transformation, an assessment of the
potential for eutrophication control can be made.
LAKE ANALYSIS
In this report, the first stage of evaluation of lake and water-
shed data collected from the study lake and its drainage basin is
documented. The report is formatted to provide state environmental
agencies with specific Information for basin planning [§303(e)j, 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 & Development, U. S. Environmental Protection Agency)
expresses sincere appreciation to the Colorado Department of
Health for professional involvement, to the Colorado National
Guard for conducting the tributary sampling phase of the Survey,
and to those wastewater treatment plant operators who voluntarily
provided effluent samples.
The staff of the Water Quality Control Division provided
invaluable lake documentation and counsel during the Survey,
reviewed the preliminary reports, and provided critiques most
useful 1n the preparation of this Working Paper series.
Lt. Colonel Paul A. Parsons, the Deputy Adjutant General of
Colorado, and Project Officer Colonel Hershel C. Yeargan, who
directed the volunteer efforts of the Colorado National Guardsmen,
are also gratefully acknowledged for their assistance to the Survey.
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IV
NATIONAL EUTROPHICATION SURVEY
STUDY LAKES AND RESERVOIRS
STATE OF COLORADO
NAME
Barker
Barr
Blue Mesa
Cherry Creek
Cucharas
Dtllon
Grand
Green Mountatn
Hoi brook
Meredith
Milton
Navajo
Shadow Mountain
COUNTY
Boulder
Adams
Boulder
Arapohoe
Huerfano
Summit
Grand
Summi t
Otero
Crowley
Weld
Archuleta, CO; San
Juan, Rip Arriba, NM
Grand
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Map Location
GREEN MOUNTAIN
RESERVOIR
9 Tributary Sampling Site
X Lake Sampling Site
f Sewage Treatment Facility
D Mil.
T 5 "T »m.
Scale
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GREEN MOUNTAIN RESERVOIR
STORE! NO. 0808
I. CONCLUSIONS
A. Trophic Condition:
Survey data indicate that Green Mountain Reservoir is oligo-
trophic. It ranked second in overall trophic quality when the
13 Colorado lakes and reservoirs sampled in 1975 were compared
using a combination of six parameters*. One of the water bodies
had less median total phosphorus, none had less and one had the
same median dissolved orthophosphorus, none had less and six had
the same median inorganic nitrogen, five had less mean chlorophyll
a^, and two had greater mean Secchi disc transparency. No signifi-
cant depression of dissolved oxygen occurred at depths as great
as 39 meters.
Field limnologists did not observe algal concentrations or
macrophytes.
B. Rate-Limiting Nutrient:
The results of the algal assay indicate that Green Mountain
Reservoir was phosphorus limited at the time the sample was col-
lected (10/09/75). The reservoir data indicate phosphorus limi-
tation in August as well.
* See Appendix A.
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2
C. Nutrient Controllability:
1. Point sources—The phosphorus contribution of point
sources amounted to 13.77% of the total load to Green Mountain
Reservoir during the sampling year. The nine indirect domestic
sources discharging in the upstream Dillon Reservoir drainage*
contributed an estimated 8.7%, the Silverthorne Sanitation Dis-
trict wastewater treatment plant added 4.9%, and septic tanks
serving shoreline dwellings and a campground accounted for an
estimated 0.2% of the total load.
The phosphorus loading of 0.77 g/m2 measured during the sam-
pling year is less than that proposed by Vollenweider (Vollen-
weider and Dillon, 1974) as a eutrophic loading but is more than
his suggested oligotrophic loading (see page 13). The only sig-
nificant point source without phosphorus removal during the sam-
pling year was the Frisco Sanitation District (SD) plant which
discharged 1,740 kg total P to Dillon Reservoir.
In regard to the Dillon Reservoir point sources, at this
time the Summit Cove wastes are treated at the Summit County
Phase D plant (with phosphorus removal), construction of phos-
phorus removal facilities at the Frisco SD plant is scheduled to
begin in October, 1977, and the Copper Mountain SD is proposing
land disposal of plant effluent (Lang, 1977). Allowing for phos-
phorus retention in that reservoir and assuming 85% removal at
the plants and complete removal by land disposal, it is calculated
these improvements will reduce the phosphorus load to Green Moun-
tain Reservoir by 395 kg and lower the overall loading to 0.72
* See Working Paper No. 769.
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3
. Since both reservoirs are phosphorus limited, any
reduction of phosphorus inputs would be expected to benefit
both water bodies.
2. Non-point sources—The phosphorus contribution of non-point
sources, including precipitation, accounted for 86.3% of the total
load to Green Mountain Reservoir during the sampling year.
The Blue River added 57.9%; Black Creek, 5.7%; Otter Creek, 5.2%;
Cataract Creek, 3.1%; and the ungaged minor tributaries and
immediate drainage contributed an estimated 12.1% of the total
load.
The phosphorus export rate of Otter Creek was appreciably
higher than the rates of nearby Black and Cataract creeks (see
page 12). The cause of the higher rate is not known, but the
mean total phosphorus concentration in Otter Creek was from
five to seven times greater than the mean concentrations in
the other two streams (see Appendix E).
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II. RESERVOIR AND DRAINAGE BASIN CHARACTERISTICS1"
4*+
A. Morphometry :
1. Surface area: 8.60 kilometers2.
2. Mean depth: 22.2 meters.
3. Maximum depth: 75.3 meters.
4. Volume: 190.759 x Itf 'm3.
5. Mean hydraulic retention time: 164 days.
B. Tributary and Outlet:
(See Appendix C for flow data)
1. Tributaries -
Drainage Mean flow
Name area (km2)* fmVsec)*
Blue River 1,323.5 9.640
Black Creek 47.9 0.862
Otter Creek 21.8 0.131
Cataract Creek 36.3 0.537
Minor tributaries &
immediate drainage - 113.3 2.290
Totals 1,542.8 13.460**
2. Outlet -
Blue River 1,551.4*** 13.460
C. Precipitation****:
1. Year of sampling: 30.8 centimeters.
2. Mean annual: 42.6 centimeters.
t Table of metric conversions—Appendix B.
ft At maximum pool level (Nelson, 1955).
* For limits of accuracy, see Working Paper No. 175, "...Survey Methods,
1973-1976".
** Sum of inflows adjusted to equal outflow.
*** Includes area of reservoir.
**** See Working Paper No. 175.
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5
III. WATER QUALITY SUMMARY
*
Green Mountain Reservoir was sampled two 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 three 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 October visit, 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 sam-
pled were 39.3 meters at station 1, 27.7 meters at station 2, and
7.3 meters at station 3.
The sampling results are presented in full in Appendix D and
are summarized in the following table.
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PARAMETER
TEMP
DISS OXY (MG/L)
CNDCTVY (MCROMO)
PH (STAND UNITS)
TOT ALK (MG/L)
TOT P (MG/L)
ORTHO P (MG/L)
N02+N03 (MG/L)
AMMONIA (MG/L)
KJEL N (MG/L)
INORG N (MG/L)
TOTAL N (MG/L)
CHLRPYL A (UG/L)
SECCHI (METERS)
A. SUMMARY OF PHYSICAL AND
1ST SAMPLING ( 8/25/75)
3 SITES
RANGE
10.9 - 14.8
5.9 - 7.5
102. - 114.
7.5 - 8.2
42. - 50.
0.006 - 0.016
0.002 - 0.002
0.020 - 0.120
0.020 - 0.020
0.200 - 0.500
0.040 - 0.140
0.220 - 0.520
7.1 - 9.8
CHEMICAL CHARACTERISTICS FOR
STORET CODE 0808
GREEN MOUNTAIN RESERVOIR
2ND SAMPLING (10/ 9/75)
•C
3 SITES
1.9 -
2.4
MEAN
13.4
7.0
107.
7.9
46.
0.010
0.002
0.036
0.020
0.257
0.056
0.293
8.3
2.1
MEDIAN
13.6
7.2
108.
7.9
47.
0.009
0.002
0.020
0.020
0.200
0.040
0.245
7.9
2.0
RANGE
6.8
7.0
1.
7.7
54.
0.009
0.002
0.020
0.020
0.020
0.040
0.040
3.1
2.7
- 13.0
9.6
- 109.
8.0
71.
- 0.022
- 0.006
- 0.060
- 0.020
- 0.200
- 0.080
- 0.260
4.0
4.0
MEAN
12.1
7.6
57.
7.9
64.
0.012
0.003
0.027
0.020
0.188
0.047
0.215
3.4
3.4
MEDIAN
12.7
7.4
101.
7.9
66.
0.011
0.002
0.030
0.020
0.200
0.050
0.230
3.1
3.5
3RD SAMPLING
0 SITES
RANGE MEAN
MEDIAN
—««««««»«««»««•»»»«»*«»»
—«»«»««««««««««•»»«««»««
»»««»» _«»»»«««»««*»»«»**»«»««
«»«««» -»««»»«»«•»«»«««»«*««»«»
»»»»»» —«»»»««»«««««»««»*«*««»
«•«**»« _«*«««»««««»»««»«**«•»««
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B. Biological Characteristics:
1. Phytoplankton -
Sampl i ng
Date
08/25/75
10/09/75
2. Chlorophyll a_ -
Sampling
Date
08/25/75
10/09/75
Limiting Nutrient Study:
1. Autoclaved, filtered,
Ortho
Spike (mg/1) Cone.
Control 0.
0.050 P 0.
0.050 P + 1.0 N 0.
1.0 N 0.
2. Discussion -
The control yield
Dominant
Genera
1. Fragilaria sp.
2. Cyclotella sp.
3. Asterionella SJD.
4. Cryptomonas sp.
Total
1. Cyclotella sp.
2. Fragilaria sp.
3. Cryptomonas SJD.
Total
Station
Number
1
2
3
1
2
3
and nutrient spiked -
P Inorganic N
(mg/1) Cone, (mg/1)
005 0.065
055 0.065
055 1.065
005 1 . 065
Algal Units
per ml
3,470
132
132
88
3,822
635
212
60
907
Chlorophyll a
(yg/1)
7.9
7.1
9.8
3.1
4.0
3.1
Maximum yield
(mg/1 -dry wt.)
0.1
1.7
16.0
0.1
of the assay alga, Selenastrum capri-
cornutum, indicates that the potential primary productivity
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8
of Green Mountain Reservoir was low at the time the sample
was taken (10/09/75). Also, the significant increase in
yield when only phosphorus was added, and the lack of response
when only nitrogen was added, indicate phosphorus limitation
at that time.
The reservoir data also indicate phosphorus limitation;
the mean inorganic nitrogen/orthophosphorus ratios were 28/1
in August and 16/1 in October, and phosphorus limitation
would be expected.
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IV. NUTRIENT LOADINGS
(See Appendix E for data)
For the determination of nutrient loadings, the Colorado National
Guard collected monthly near-surface grab samples from each of the
tributary sites indicated on the map (page v), except for the months
of June and July when two or three samples were collected. Sampling
was begun in September, 1974, and was completed in August, 1975.
Through an interagency agreement, stream flow estimates for the
year of sampling and a "normalized" or average year were provided by
the Colorado District Office of the U.S. Geological Survey for the
tributary sites nearest the reservoir.
In this report, nutrient loads for sampled tributaries were
determined by using a modification of a U.S. Geological Survey computer
program for calculating stream loadings*. Nutrient loads shown are
those measured minus point-source loads, if any.
Nutrient loads for unsampled "minor tributaries and immediate
drainage" ("II" of U.S.G.S.) were estimated using the means of the
nutrient loads, in kg/km2/year, at stations B-l and D-l and multiplying
the means by the II area in km2.
The operator of the Silverthorne Sanitation District wastewater treat-
ment plant provided monthly effluent samples and corresponding flow data.
The indirect point-source loads leaving upstream Dillon Reservoir were
calculated by multiplying the nutrient loads leaving that reservoir via
See Working Paper No. 175.'
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10
the Blue River (1,860 kg P and 155,490 kg N) by the fractions of the
total nutrient loads contributed by the point sources (0.306 for P and
0.075 for N).
A. Waste Sources:
1. Known domestic* -
Pop. Mean Flow Receiving
Name Served Treatment (m3/d) Water
Silverthorne SD 1,000 phosphorus 2,211.0 Blue River
removal
2. Indirect domestic - During the sampling year, nine domestic
point sources with a combined population equivalence of about
5,330 discharged in the Dillon Reservoir drainage, and a portion
of the nutrient loads from those sources reached Green Mountain
Reservoir via the Blue River. Phosphorus removal was provided
at four of the treatment plants (P.E. ca. 3,750).
3. Industrial - Mining activities in Dillon Reservoir drainage,
particularly in the Tenmile Creek watershed, are reported to con-
tribute to elevated levels of molybdenum in that reservoir (Anony-
mous, 1974). The nutrient significance of the mining operations
is not known but is assumed to be minimal.
* Treatment plant questionnaire.
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11
B. Annual Total Phosphorus Loading - Average Year:
1. Inputs -
kg P/ % of
Source yr total
a. Tributaries (non-point load) -
Blue River 3,810 57.9
Black Creek 375 5.7
Otter Creek 345 5.2
Cataract Creek 205 3.1
b. Minor tributaries & immediate
drainage (non-point load) - 795 12.1
c. Known municipal STP's -
Silyerthorne SD 325 4.9
Indirect - Dillon Reservoir 570 8.7
drainage
d. Septic tanks* - 10 0.2
e. Industrial - Unknown ?
f. Direct precipitation** - 150 2.3
Total 6,585 1QO.O
2. Outputs -
Reservoir outlet - Blue River 6,390
3. Net annual P accumulation - 195 kg.
* Estimate based on 30 shoreline dwellings and one campground; see Working
Paper No. 175.
** See Working Paper No. 175.
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12
Annual Total Nitrogen Loading - Average Year:
1. Inputs -
kg N/ % of
Source yr total
a. Tributaries (non-point load) -
Blue River 103,755 59.1
Black Creek 10,705 6.1
Otter Creek 2,055 1.2
Cataract Creek 5,600 3.2
b. Minor tributaries & immediate
drainage (non-point load) - 21,355 12.2
c. Known municipal STP's -
Silverthorne SD 10,690 6.1
Indirect - Dillon Reservoir 11,660 6.6
drainage
d. Septic tanks* - 355 0.2
e. Industrial - Unknown ?
f. Direct precipitation** - 9,285 5.3
Total 175,460 100.0
2. Outputs -
Reservoir outlet - Blue River 168,530
3. Net annual N accumulation - 6,930 kg.
Non-point Nutrient Export by Subdrainage Area:
Tributary kg P/km2/yr kg N/km2/yr
Blue River 3 78
Black Creek 8 223
Otter Creek 16 94
Cataract Creek 6 154
* Estimate based on 30 shoreline dwellings and one campground; see Working
Paper No. 175.
** See Working Paper No. 175.
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13
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 0.77 0.02 20.4 0.8
Vollenweider phosphorus loadings
(g/m2/yr) based on mean depth and mean
hydraulic retention time of Green Mountain Reservoir:
"Dangerous" (eutrophic loading) 1.34
"Permissible" (oligotrophic loading) 0.67
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14
V. LITERATURE REVIEWED
Anonymous, 1974. Dillon Reservoir - Blue River study, Colorado, June,
July, August - 1973. Tech. Invest. Br., Surv. & Anal. Div., EPA
Region VIII, Denver.
Lang, Derald E., 1977. Personal communication (review of preliminary
report; status of waste treatment facilities as of July, 1977).
CO Dept. of Health, Denver.
Nelson, Wesley C., 1955. Green Mountain Reservoir studies, 1949-1950.
CO Dept. of Game & Fish, Denver.
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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15
VI. APPENDICES
APPENDIX A
LAKE RANKINGS
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•_&<=: D#TA re BR u
LAKE
CODE LAKE NAME
0801 BACKER RESEKVOIR
OS02 BARK LAKE
0803 BLUE MESA RESERVOIR
0804 CHERRY CREEK LAKE
0805 CUCHARAS RESERVOIR
0806 DILLON RESERVOIR
0807 GRAND LAKE
0808 GREEN MOUNTAIN RESERVOIR
0809 HOL8ROOK LAKE
0810 LAKE MEREDITH
0811 MILTON RESERVOIR
0813 NAVAJO RESERVOIK
0313 SHADOW MOUNTAIN LAKE
MEDIAN
TOTAL fi
0.023
0.930
0.019
0.054
0.263
0.009
0.013
0.010
0.329
0.397
0.846
0.036
0.020
MEDIAN
INO»G N
0.045
1.090
0.040
0.040
0.040
0.040
0.040
0.040
0.070
0.110
2.280
0.050
0.040
500-
MEAN SEC
419.000
451.333
395.750
469.333
490.000
181.750
366.500
391.167
490.333
489.667
429.333
479.400
427.000
MEAN
CHLORA
5.333
26.767
6.817
33.322
27.400
3.150
4.900
5.833
111.933
164.678
5.900
2.180
5.700
15-
MIN DO
9.400
10.200
13.800
10.000
14.800
9.200
10.200
9.100
9.000
10.400
9.300
10.000
9.200
MED I
OISS ORTi
0.006
0.730
0.005
0.007
0.015
0.002
0.003
0.002
0.028
0.098
0.808
0.013
0.003
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LAKE
CODE
OflOl
0802
0803
0804
0805
0806
0807
0808
0809
0810
0811
0813
0813
Or LAKES wITM HIGHER VALUES
LAKE NAME
BARKER RESERVOIR
BARft LAKE
BLUE MESA RESERVOIR
CHERRY CREEK LAKE
CUCHARAS RESERVOIR
DILLON RESERVOIR
GRAND LAKE
GREEN MOUNTAIN RESERVOIR
HOLUROOK LAKE
LAKE MEREDITH
MILTON RESERVOIR
NAVAJO RESERVOIR
SHADOW MOUNTAIN LAKE
OF LAKES
VALUES)
MEDIAN
TOTAL P
58 (
0 (
75 (
42 (
33 (
100 <
83 (
92 (
?5 (
17 <
8 (
50 (
67 (
7)
0)
9)
5)
4)
12)
10)
11)
3)
2)
1)
6)
8)
MEDIAN
INORG N
42 (
8 (
87 ('
87 (
58 (
58 <
87 (
58 <
25 (
17 (
0 (
33 (
87 (
5)
1)
9)
9)
6)
6)
9)
6)
3)
2)
0)
4)
9)
500-
MEAN SEC
67 (
42 (
75 (
33 (
8 (
100 (
92 <
83 <
0 (
17 <
50 (
25 (
58 (
8)
5)
9)
4)
1)
12)
11)
10)
0)
2)
6)
3)
7)
MEAN
CHLORA
75 <
17 (
42 (
33 (
25 (
92 (
83 (
58 (
3 (
0 (
50 <
100 (
67 (
9)
2)
5>
4)
3)
11)
10)
7)
1)
0)
6)
12)
8)
15-
MIN UO
58 (
29 (
8 (
46 (
0 (
75 (
29 (
92 (
100 (
17 (
75 (
46 (
75 (
7)
3)
1)
5)
0)
8)
3)
11)
12)
2)
8)
5)
8)
MEDIAN
DISS ORTHO P
5d (
6 (
67 (
50 «
33 (
96 (
79 (
96 (
25 (
17 (
0 (
42 (
79 (
7)
1)
8)
6)
4)
11)
9)
11)
3)
2)
0)
5)
9)
INDEX
NO
358
104
354
291
157
521
453
479
183
85
113
296
433
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LAKES RANKED BY INDEX NOS.
RANK LAKE CODE LAKE NAME INDEX NO
i 0806 DILLON RESERVOIR 521
2 0808 GREEN MOUNTAIN RESERVOIR 479
3 0807 GRAND LAKE 453
4 0813 SHADON MOUNTAIN LAKE 433
5 0801 BARKER RESERVOIR 358
6 0803 SLUE MESA RESERVOIR 354
7 0812 NAVAJO RESERVOIR 296
8 0804 CHERRY CREEK LAKE 291
9 0811 MILTON RESERVOIR 183
10 0809 HOLBROOK LAKE 183
11 0805 CUCHARAS RESERVOIR 157
-.„ 12 0802 BARR LAKE 104
13 0810 LAKE MEREDITH 85
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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
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
4
Kilograms x 2.205 = pounds
Kilograms/square kilometer x 5.711 = Ibs/square mile
-------
APPENDIX C
TRIBUTARY FLOW DATA
-------
TRIBUTARY FLO* INFORMATION FOR COLORADO
LA
-------
TRIBUTARY FLOW INFORMATION FOR COLORADO
09/34/76
LA
-------
APPENDIX D
PHYSICAL and CHEMICAL DATA
-------
STDRET RETRIEVAL DATE 76/09/2*
080801
39 52 34,0 106 18 57.0 3
GREEN MOUNTAIN RESERVOIR
08117 COLORADO
HEPALtS 751210 2111202
0070 FEET DEPTH CLASS 00
DATE
FROM
TO
75/08/25
75/10/09
DATE
FROM
TO
75/08/25
75/10/09
TIME DEPTH
OF
DAY FEET
13 30 0000
13 30 0005
13 30 0022
13 30 00*0
13 30 0066
16 50 0000
16 50 0005
16 50 0018
16 50 0045
16 50 0090
16 50 0129
TIME DEPTH
OF
DAY FEET
13 30 0000
13 30 0005
13 30 0022
13 30 0040
13 30 0066
16 50 0000
16 50 0005
16 50 0018
16 50 0045
16 50 0090
16 50 0129
00010
*ATER
TEMP
CENT
13.5
13.3
13.5
12.6
11.0
13.0
12.8
12.5
12.5
12.4
12.5
00665
PHOS-TOT
MG/L P
0.010
0.009
0.008
0.008
0.006
0.010
0.009
0.010
0.009
0.011
0.022
00300 00077 00094
DO TRANSP CNOUCTVY
SECCHI FIELD
MG/L INCHES MICROMHO
7.2 96
7.2
7.0
6.8
5.9
7.2 156
7.2
7.2
7.2
7.4
7.0
32217 00031
CHLRPHYL INCDT LT.
A REMNING
UG/L PERCENT
7.9
3.1
114
110
109
108
103
101
106
1
1
1
1
00400 00410
PH T ALK
CAC03
su
7.60
8.10
7.90
7.85
7.60
7.75
7.80
7.80
7.80
7.75
7.70
MG/L
48
49
49
49
42
60
66
67
71
70
70
00610 00625 00630 00671
NH3-N TOT KJEL N02S.N03 PHOS-D1S
TOTAL N N-TOTAL ORTHO
MG/L
0
0
0
0
0
0
0
0
0
0
0
.020K
.020K
.020K
.020K
.020K
.020K
.020K
.020K
.020K
.020K
.020K
MG/L
0.200K
0.200K
0.200K
0.200
0.200K
0.200K
0.200K
0.200K
0.200K
0.200K
0.200K
MG/L
0.020K
0.020K
0.020K
0.030
0.120
0.030
0.030
0.030
0.030
0.030
0.030
MG/L P
0.002K
0.002K
0.002K
0.002K
0.002K
0.003
0.002K
0.002K
0.002
0.002K
0.002K
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
STORE! RETRIEVAL DATE 76/09/34
080802
39 52 15.0 106 16 57.0 3
GREEN MOUNTAIN RESERVOIR
08117 COLORADO
11EPALES 751210 2111202
0095 FEET DEPTH CLASS 00
DATE
FROM
TO
75/08/25
75/10/09
TIME DEPTH
OF
DAY FEET
14 00 0000
14 00 0005
14 00 0021
14 00 0055
14 00 0091
16 30 0000
16 30 0005
16 30 0016
16 30 0040
16 30 0062
00010
WATER
TEMP
CENT
14.6
14.7
14.3
12.2
10.9
12.9
12.9
12.8
12.7
12.5
00010
WATER
TEMP
CENT
00300
DO
MG/L
00077
TRANSP
SECCHI
INCHES
00094
CNDUCTVY
FIELD
MICROMHO
00400
PH
su
00410
T ALK
CAC03
MG/L
00610
NH3-N
TOTAL
MG/L
00625
TOT KJEL
N
MG/L
00630
N02fc,N03
N-TOTAL
MG/L
00671
PHOS-DIS
ORTMO
MG/L P
7.4
7.5
7.0
6.6
6.7
7.4
7.8
7.8
7.4
7.4
80
138
107
107
105
102
104
108
108
107
104
107
8.20
8.20
8.10
7.75
7.50
7.80
7.90
7.90
7.90
7.90
43
44
44
43
47
63
63
66
67
66
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.200K
0.200K
0.200K
0.200K
0.20 OK
0.200K
0.200K
0.200K
0.200K
0.200K
0.030
0.020K
0.020K
0.060
0.080
0.030
0.020
0.020K
0.020
0.020
0.002K
0.002K
0.002K
0.002K
0.002K
0.003
0.002K
0.002K
0.005
0.002K
DATE
FROM
TO
75/08/25
75/10/09
TIME DEPTH
OF
DAY FEET
14 00 0000
14 00 0005
14 00 0021
14 00 0055
14 00 0091
16 30 0000
16 30 0005
16 30 0016
16 30 0040
16 30 0062
00665
PHOS-TOT
MG/L P
0.009
0.009
0.009
0.008
0.014
0.013
0.011
0.010
0.010
0.012
32217
CHLRPHYL
A
UG/L
7.1
4.0
00031
INCDT LT
REMNING
PERCENT
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
STORET RETRIEVAL DATE 76/09/24
080803
39 50 07.0 106 14 30.0 3
GREEN MOUNTAIN RESERVOIR
08117 COLORADO
11EPALES 751210 2111202
0027 FEET DEPTH CLASS 00
DATE
FROM
TO
75/08/25
75/10/09
DATE
FROM
TO
75/08/25
75/10/09
TIME DEPTH
OF
DAY FEET
14 30 0000
14 30 0005
14 30 0018
14 30 0024
16 00 0000
16 00 0005
16 00 0015
16 00 0023
TIME DEPTH
OF
DAY FEET
14 30 0000
14 30 0005
14 30 0018
14 30 0024
16 00 0000
16 00 0005
16 00 0015
16 00 0023
00010
WATER
TEMP
CENT
14.6
14.7
14.0
13.2
12.7
12.8
10.0
6.8
00665
PHOS-TOT
MG/L P
0.010
0.013
0.014
0.016
0.016
0.012
0.011
0.012
00300
DO
MG/L
7.
7.
7.
7.
7.
8.
8.
9.
32217
00077 00094
TRANSP CNDUCTVY
SECCHI FIELD
INCHES MICROMHO
2 75
3
2
2
8 108
0
2
6
00031
109
108
108
109
109
I
1
1
00400 00410
PH T ALK
CAC03
SU
7.70
8.05
8.00
8.10
7.95
8.00
8.00
8.00
i
i
MG/L
46
44
50
50
56
54
54
71
00610 00625 00630 00671
NH3-N TOT KJEL N02&N03 PHOS-DIS
TOTAL N N-TOTAL ORTHO
MG/L
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
MG/L
0.300
0.400
0.500
0.400
0.200K
0.020K
0.200K
0.200K
MG/L
0.020K
0.020K
0.020
0.020
0.020
0.020K
0.020
0.060
MG/L P
0.002K
0.002K
0.002K
0.002K
0.006
0.002
0.002K
0.003
CHLRPHYL INCDT LT
A
UG/L
9.
3.
REMNING
PERCENT
8
1
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
APPENDIX E
TRIBUTARY AND WASTEWATER
TREATMENT PLANT DATA
-------
STORE! RETRIEVAL DATE 76/09/34
DATE TIME DEPTH N02&N03
PROM OF
TO DAY FEET
7^/09/28
74/11/24
74/12/21
75/01/26
75/02/26
75/04/01
75/06/02
75/06/12
75/06/29
75/07/12
75/07/26
75/08/28
12
15
16
14
14
15
11
11
10
10
10
10
07
00
25
14
50
30
?0
25
30
25
30
27
0808A1
39 52 00.0 106 20 00.0 4
BLUE *IV£R
08 SUMMIT CO n»- MP
0/GWEEN MOUNTAIN RES 110391
SEC *0 8RDG 24.8 MI >.* OF SILVES
11EPALES 2111204
0000 FEET OEPTri C.JSS 00
^ORNE
'0630
I&N03
OTAL
IG/L
0.080
C.056
0.048
0.075
o.oao
0.100
0.115
0.105
0.125
0.145
0.135
0.010
00625
TOT KJEL
N
MG/L
0.200
0.400
0.100K
0.900
0.400
0.450
0.350
0.100
0.250
0.100
0.250
0.150
00610
NH3-N
TOTAL
MG/L
0.01C
0.020
0.024
0.016
0.010
0.020
0.025
0.020
0.010
0.015
0.005
00671
PhOS-OIS
ORT-IO
MG/C P
O.OC5K
0.005K
0.008K
0.017
0.008K
0.005K
0.005K
0.005K
0.010
0.005
0.005K
0.005K
00665
PHOS-TOT
MG/L P
0.005K
0.010K
0.010K
0.030
0.010K
0.010K
0.020
0.010K
0.020
0.020
0.0101V
0.030
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
STOKET RETRIEVAL DATE 76/09/24
DATE TIME DEPTH N02J.N03
FROM OP
TO DAY FEET
74/09/28
74/11/24
74/12/21
75/01/26
75/04/01
75/04/27
75/06/02
75/06/12
75/06/29
75/07/12
75/07/26
75/08/28
10 40
13 40
15 15
12 45
14 30
12 30
10 10
12 05
10 05
10 00
10 10
10 00
0808A2
39 49 30.0 106 13 00.0 4
BLUE RIVER
08 SUMMIT CO HWY MP
T/GREEN MOUNTAIN RES 110391
RT 9 dRDG 17 MI NNW OF SILVERTHORrJE
11EPALES 3111204
0000 FEET DEPTH CLASS 00
10630
JJ.N03
OTAL
IG/L
0.104
0.120
0.120
0.120
0.135
0.150
0.175
0.125
0.085
0.035
0.030
0.100
00625
TOT KJEL
N
MG/L
0.200
0.100
0.100
0.800
1.350
0.237
0.100
0.250
0.250
0.150
0.100
00610
NH3-N
TOTAL
MG/L
0.005
0.010
0.024
0.048
0.035
0.020
0.055
0.040
0.010
0.010
0.015
0.005K
00671
PKOS-DIS
ORTHO
MG/L P
0.005K
0.005K
O.OOHK
0.019
0.005K
0.005
0.005K
0.005K
0.005
0.005
0.005K
0.005K
00665
PHOS-TOT
MG/L P
0.010
0.010K
0.010K
0.020
0.010K
0.030
0.022
0.010K
0.010
0.030
0.020
0.010K
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
STORET RETRIEVAL DATE 76/09/?4
39 51 30.0 106 15 30.0 4
BLAC* CREEK
03 SUMMIT CO HWY MP
T/GRtEN MOUNTAIN RES 110391
SEC SD 8RD6 3.6 MI S£ OF HEENEY
11EPALES 2111204
0000 fEET DEPTH CLASS 00
DATE
FROM
TO
74/09/28
74/11/24
75/01/26
75/04/27
75/06/02
75/06/12
75/06/29
75/07/12
75/07/26
75/08/28
00630 00625
TIME DEPTH N02&N03 TOT KJEL
OF N-TOTAL N
DAY FEET
11
14
13
13
10
13
11
11
11
11
05
00
15
05
25
00
00
50
00
49
MG/L
0
0
0
0
0
0
0
0
0
0
.012
.032
.104
.170
.040
.065
.065
.065
.045
.020
MG/L
0.500
0.300
0.400
0.150
0.150
0.400
0.600
0.325
0.150
0.050K
00610 00671 00665
NH3-N PhOS-DIS PHOS-TOT
TOTAL URTHO
MG/L
0.
0.
0.
0.
0.
c.
0.
0.
0.
0.
010
010
032
010
015
050
015
015
010
005K
MG/L
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
p
005K
005K
015
005
005K
005K
005
005
005K
005K
MG/L P
0
0
0
0
0
0
0
0
0
0
.005
,010K
.015
.020
.020
.010K
.020
.025
.010K
.010K
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
STORET RET~IE<*^ OATE 76/09/24
00630
OATE TIMF DEPTH N02&N03
FROM OF N-TOTAL
TO DAr FEET MG/L
74/09/28 11 28
74/11/24 14 11
75/06/02 10 45
75/06/12 12 50
75/06/29 10 55
75/07/12 10 45
75/07/26 10 55
75/08/28 11 31
0.016
0.072
0.035
0.045
0.010
0.010
0.035
0.025
00625
TOT KJEL
N
MG/L
0.400
0.600
0.550
0.350
0.450
0.550
0.350
0.350
00610
NH3-N
TOTAL
MG/L
0.010
0.020
0.030
0.035
0.025
0.020
0.040
0.005
00671
PrlOS-DIS
ORTHO
MG/L P
0.040
0.030
0.025
0.045
0.040
0.050
0.085
0.055
080SC1
39 51 20.0 106 16 00.0 4
OTTEK CREEK
08 SUMMIT CO H«r MP
T/GREEN MOUNTAIN RES 110391
SEC RD BROG 3.0 Ml SE OF HEENEY
11EPALES 2111204
0000 FEET DEPTH CLASS 00
00665
PMOS-TOT
MG/L P
0.057
0.030
0.050
0.050
0.070
0.090
0.120
0.130
-------
STORET RETRIEVAL DATE 76/09/34
DATE TIME DEPTH N02S.N03
FROM OF
TO OAY FEET
74/09/28
74/11/24
75/04/27
75/06/02
75/06/12
75/06/29
75/07/12
75/07/26
75/08/28
11 <*5
14 30
13 ?5
11 00
12 40
10 45
10 35
10 45
11 00
0806D1
39 51 45.0 106 17 00.0 4
CATARACT CREEK
08 SUMMIT CO riWY MP
T/GRcEN MOUNTAIN RES 110391
SEC RO BRDG 1.8 Ml SE OF HEENEY
11EFALES 2111204
0000 FEET DEPTH CLASS 00
0630
'S.N03
OTAL
IG/L
0.092
0.043
0.105
0.025
0.020
0.025
0.015
0.015
0.010
00625
TOT KJEL
N
MG/L
0.200
0.500
0.650
0.250
0.150
0.250
0.250
0.150
0.100
00610
NH3-N
TOTAL
MG/L
0.005
0.007
0.035
0.025
0.030
0.020
0.040
0.010
0.005
00671
PHOS-OIS
ORTHO
MG/L P
0.005K
0.005K
O.OOSK
0.005K
0.005K
0.010
0.005
O.OOSK
0.005K
00665
PHOS-TOT
MG/L P
O.OOSK
0.010K
0.010
0.010
0.010K
0.010
0.020
0.010K
0.01QK
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
STORE! RETRIEVAL DATE 76/09/24
0308AA P00808AA P001000
39 39 45.0 106 04 55.0 4
SILVESTHORNE
08 7.5 DILLION
T/GREEN MT. RES. 110391
LOtfER BLUE RIVER
11EPALES 3141204
0000 FEET DEPTH CLASS 00
DATE
FROM
TO
75/01/31
75/03/03
75/03/31
75/04/30
75/05/28
75/06/11
75/07/02
75/07/23
75/08/14
75/09/04
75/09/24
75/10/15
75/11/05
00630
TIME DEPTH N02C.N03
OF N-TOTAL
DAY FEET
08
09
15
15
14
15
15
15
15
15
15
17
10
45
15
00
00
30
15
30
00
00
15
00
15
30
MG/L
0.
0.
0.
1.
0.
0.
4.
6.
13.
14.
15.
18.
16.
080
080
080
100
550
300
900
500
200
350
000
000
800
00625
TOT KJEL
N
MG/L
16.000
17.000
17.500
6.300
4.400
4.700
6.500
6.100
6.500
4.900
5.600
4.350
1.900
00610 00671 0066S
NH3-N PHOS-DIS PHOS-TOT
TOTAL ORTHO
MG/L
13.000
11.600
13.200
5.400
4.100
4.200
4.800
4.900
3.600
2.300
1.800
1.300
0.600
MG/L P
0
0
0
0
0
0
0
0
0
0
0
0
0
.073
.140
.140
.088
.050K
.050K
.043
.050K
.025K
.060
.620
.390
.908
50051 50053
FLOW CONDUIT
RATE FLOW-MGD
MG/L P INST MGD MONTHLY
0.960
0.760
0.190
0.100K
0.100K
0.150
0.110
0.250
0.300
0.730
1.200
0.530
0.920
0.390
0.484
0.531
0.751
1.040
0.796
0.688
0.743
0.562
0.510
0.464
0.387
0.440
0.434
0.426
0.515
0.673
0.851
0.881
0.712
0.741
0.623
0.458
0.456
0.410
0.413
K VALUE KNOWN TO BE
LESS THAN INDICATED
------- |