U.S. ENVIRONMENTAL PROTECTION AGENCY
NATIONAL EUTROPHICATION SURVEY
WORKING PAPER SERIES
REPORT
ON
BARKER RESERVOIR
BOULJDER COUNTY
COLORADO
EPA REGION VIII
WORKING PAPER No, 765
CORVALLIS ENVIRONMENTAL RESEARCH LABORATORY - CORVALLIS, OREGON
and
ENVIRONMENTAL MONITORING & SUPPORT LABORATORY - LAS VEGAS, NEVADA
-------
REPORT
ON
BARKER ESERVOIR
BOULDER COUNTY
COLORADO
EPA REGION VIII
WORKING PAPER No, 765
WITH THE COOPERATION OF THE
COLORADO DEPARTMENT OF HEALTH
AND THE
COLORADO NATIONAL GUARD
JUNE, 1977
-------
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 3
III. Lake Water Quality Summary 4
IV. Nutrient Loadings 8
V. Literature Reviewed ' 12
VI. Appendices 13
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11
FOREWORD
The National Eutrophication Survey was initiated in 1972 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.
-------
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 in 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
Dillon
Grand
Green Mountain
Hoi brook
Meredith
Milton
Navajo
Shadow Mountain
COUNTY
Boulder
Adams
Boulder
Arapohoe
Huerfano
Summit
Grand
Summi t
Otero
Crowley
Weld
Archuleta, CO; San
Juan, Rio Arriba, NM
Grand
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BARKER RESERVOIR
Tributary Sampling Site
X Lake Sampling Site
¥ Sewage Treatment Facility
* Drainage Area Boundary
Middle
BARKER Boulde
-------
BARKER RESERVOIR
STORE! NO- 0801
I. CONCLUSIONS
A. Trophic Condition:
Survey data indicate that Barker Reservoir is mesotrophic.
It ranked fifth in overall trophic quality when the 13 Colorado
lakes and reservoirs sampled in 1975 were compared using a com-
bination of six water quality parameters*. Five of the water
bodies had less median total phosphorus and dissolved orthophos-
phorus, seven had less median inorganic nitrogen, three had less
mean chlorophyll a_, and four had greater mean Secchi disc trans-
parency. No significant depression of dissolved oxygen occurred
at depths as great as 36.6 meters.
Survey limnologists did not observe macrophytes or surface
concentrations of algae during sampling visits.
B. Rate-Limiting Nutrient:
The algal assay results are not considered representative of
conditions in the reservoir at the time samples were taken due
to significant changes in nutrient concentrations during shipment
from the field to the laboratory. The reservoir data indicate
nitrogen limitation at all sampling stations and times with the
exception of station 2 in May.
C. Nutrient Controllability:
1. Point sources—The wastewater treatment plant at Nederland,
* See Appendix A.
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2
the only known point source, contributed 45.3% of the total
phosphorus load to Barker Reservoir during the sampling year.
The present phosphorus loading of 0.59 g/m2/year is more
than that proposed by Vollenweider (Vollenweider and Dillon,
1974) as an oligotrophic loading but less than his suggested
eutrophic loading; i.e., a mesotrophic loading (see page 11).
Any reduction of the point-source phosphorus load would be
considered a measure to protect the existing quality of Barker
Reservoir.
2. Non-point sources--Non-point sources contributed 54.7%
of the total phosphorus input during the sampling year. Middle
Boulder Creek contributed 49.7%, and the ungaged minor tributaries
and immediate drainage contributed an estimated 2.0%.
The phosphorus export rate of Middle Boulder Creek was a
relatively low 5 kg/km2 during the sampling year (see page 10);
the mean of the exports of the other 26 Colorado gaged and
sampled tributaries was 12 kg/km 2/yr.
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II. RESERVOIR AND DRAINAGE BASIN CHARACTERISTICS1"
A. Morphometry :
1. Surface area: 1.70 kilometers2.
2. Mean depth: 8.3 meters.
3. Maximum depth: >36.6 meters.
4. Volume: 14.185 x 106 m3.
5. Mean hydraulic retention time: 104 days (based on outflow).
B. Tributary and Outlet:
(See Appendix C for flow data)
1. Tributaries -
Drainage Mean flow
Name area (km2)* (m3/sec)*
Middle Boulder Creek 93.8 1.550
Minor tributaries &
immediate drainage - 3.7 0.058
Totals 97.5 1.608
2. Outlet -
Aqueduct 0.0 0.940
Middle Boulder Creek 99.2 0.640
Totals 99.2** 1.580
C. Precipitation***:
1. Year of sampling: 42.2 centimeters.
2. Mean annual: 32.9 centimeters.
t Table of metric conversions—Appendix B.
tt Anderson, 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
Barker Reservoir was sampled three times during the open-water
season of 1975 by means of a pontoon-equipped Huey helicopter. Each
time, samples for physical and chemical parameters were collected
from a number of depths at two stations on the reservoir (see map,
page v). During each visit, a single depth-integrated (4.6 m 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 36.6 meters at station
1 and 7.9 meters at station 2.
The sampling results are presented in full in Appendix D and
are summarized in the following table.
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PARAMETER
TEMP (C)
DISS OXY (MG/L)
CNDCTVY (MCROMO)
PH (STAND UNITS)
TOT ALK (MG/L)
TOT P (MG/L)
ORTHO P (MG/L)
N02*N03 (MG/L)
AMMONIA (MG/L)
KJEL N (MG/L)
INORG N (MG/L)
TOTAL N (MG/L)
CHLRPYL A (UG/L)
SECCHI (METERS)
A. SUMMARY OF PHYSICAL AND
1ST SAMPLING ( 5/ 7/75)
2 SITES
CHEMICAL CHARACTERISTICS FOR BARKER RESERVOIR
STORET COOE 0801
2ND SAMPLING ( 8/26/75)
2 SITES
RANGE
3.7 - 3.9
9.2 - 10.8
28. - 39.
8.4 - 9.0
23. - 26.
0.034 - 0.040
0.005 - 0.012
0.060 - 0.090
0.020 - 0.030
0.400 - 0.600
0.080 - 0.120
0.460 - 0.680
0.6 - 9.0
1.2 - 1.3
3RD SAMPLING uo/io/7S>
2 SITES
MEAN
3.8
9.6
37.
8.7
24.
0.037
0.007
0.030
0.021
0.437
0.101
0.517
4.8
1.3
MEDIAN
3.7
9.4
38.
8.7
24.
0.037
0.006
0.080
0.020
0.400
0.100
0.485
4.8
1.3
RANGE.
7.0
5.6
27.
6.9
12.
0.010
0.002
0.020
0.020
0.200
0.040
0.220
3.7
1.9
- 15.7
7.8
32.
9.1
20.
- 0.028
- 0.016
- 0.100
- 0.020
- 0.200
- 0.120
- 0.300
3.7
2.4
MEAN
13.0
7.1
30.
8.0
17.
0.015
0.005
0.032
0.020
0.200
0.052
0.232
3.7
2.2
MEDIAN
15.2
7.2
29.
8.1
18.
0.014
0.004
0.020
0.020
0.200
0.040
0.220
3.7
2.2
RANGE .
9.5
7.0
27.
7.9
10.
0.018
0.006
0.020
0.020
0.300
O.OtO
0.320
6.8
2.4
9.8
7.8
28.
8.5
15.
- 0.057
- 0.025
- 0.230
- 0.080
- 0.700
- 0.250
- 0.740
8.2
3.0
MEAN
9.7
7.4
28.
8.2
13.
0.028
0.011
0.050
0.027
0.412
0.077
0.462
7.5
2.7
MEDIAN
9.6
7.4
28.
8.1
13.
0.023
0.010
0.020
0.020
0.400
0.040
O.^O
7.5
2.7
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B. Biological characteristics:
1. Phytoplankton -
Sampling
Date
05/07/75
08/26/75
10/10/75
2. Chlorophyll a^ -
Sampling
Date
05/07/75
08/26/75
10/10/75
Dominant
Genera
1.
2.
3.
4.
5.
1.
2.
3.
4.
5.
1.
2.
3.
4.
5.
Melosira sp.
Chroomonas (?) sp.
Fragilaria sp.
Cryptomonas sp.
Mallomonas sp.
Other genera
Total
Fragilaria sp.
Spondylosium sp...
Chroomonas (?Tsp.
Melosira sp.
Anabaena sp.
Other genera
Total
Chlamydomonas sp.
Melosira sp.
Chroomonas sp.
Oscillatoria sp.
Cryptomonas sp.
Other genera
Total
Algal Units
per ml
9,734
721
613
216
72
108
Station
Number
1
2
1
2
1
2
11,464
1,381
563
256
104
51
203
2,558
6,478
748
208
125
42
7,682
Chlorophyll a
(yg/1)
0.6
9.0
3.7
3.7
8.2
6.8
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7
C. Limiting Nutrient Study:
Due to significant changes in nutrient levels in the samples
during shipment from the field to the laboratory, the assay results
are not considered representative of conditions in the reservoir at
the time the samples were collected (05/07/75 and 10/10/75). The
reservoir data indicate nitrogen limitation at station 1 and phos-
phorus limitation at station 2 in May; i.e., the mean inorganic
nitrogen/orthophosphorus ratios were 13/1 and 19/1, respectively.
At the other sampling times, the data indicate nitrogen limitation
(the mean N/P ratios were 13/1 or less at both stations, and nitro-
gen limitation would be expected).
-------
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 August when two 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 lake.
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 nutrient loads,
in kg/km 2/year, at station A-2 (Nederland wastewater treatment plant
load subtracted) and multiplying the means by the ZZ area in km2.
The operator of the Nederland wastewater treatment plant provided
monthly effluent samples and corresponding flow data.
See Working Paper No. 175.
-------
A.
Waste Sources:
1. Known municipal* -
Name
Nederland
Pop.
Served
492
Mean Flow
Treatment (m3/d)
stab, ponds 240.7
2. Known industrial - None
B. Annual Total Phosphorus Loading - Average Year:
1. Inputs -
kg P/
Source y_r
a. Tributaries (non-point load) -
Middle Boulder Creek 500
b. Minor tributaries & immediate
drainage (non-point load) - 20
c. Known municipal STP's -
Nederland 455
d. Septic tanks - Unknown ?
e. Known industrial - None
f. Direct precipitation** - 30
Total 1,005
2. Outputs -
Reservoir outlet - Aqueduct 470
Middle Boulder
Creek 390
Total 860
3. Net annual P accumulation - 145 kg.
Receiving
Water
N. Beaver Creek/
Barker Reservoir
% of
total
49.7
2.0
45.3
3.0
100.0
* Treatment plant questionnaire.
** See Working Paper No. 175.
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10
C. Annual Total Nitrogen Loading - Average Year:
1. Inputs -
kg N/ % of
Source yj; total
a. Tributaries (non-point load) -
Middle Boulder Creek 26,980 85.6
b. Minor tributaries & immediate
drainage (non-point load) - 1,065 3.4
c. Known municipal STP's -
Nederland 1,640 5.2
d. Septic tanks - Unknown ?
e. Known industrial - None
f. Direct precipitation* - 1,835 5.8
Total 31,520 100.0
2. Outputs -
Reservoir outlet - Aqueduct 14,225
Middle Boulder
Creek 12,115
Total 26,340
3. Net annual N accumulation - 5,180 kg.
D. Non-point Nutrient Export by Subdrainage Area:
Tributary kg P/km2/yr kg N/km2/yr
Middle Boulder Creek 5 288
* 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 0.59 0.09 18.5 3.0
Vollenweider phosphorus loadings
(g/m2/yr) based on mean depth and mean
hydraulic retention time of Barker Reservoir:
"Dangerous" (eutrophic loading) 1.04
"Permissible" (oligotrophic loading) 0.52
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12
V. LITERATURE REVIEWED
Anderson, R. Dennis, 1974. Personal communication (reservoir infor-
mation and morphometry). CO Dept. of Health, Denver.
Anonymous, 1975. Water resources data for Colorado. Part 1. Surface
water records. U.S. Geol. Surv., Lakewood.
Vollenweider, R. A., and P. J. Dillon, 1974. The application of
the phosphorus loading concept to eutrophication research.
Natl. Res. Council of Canada Pub!. No. 13690, Canada Centre
for Inland Waters, Burlington, Ontario.
-------
VI. APPENDICES
APPENDIX A
LAKE RANKINGS
-------
TO BF. USED !N «V*!«
LAKE
CODE LAKE NAME
0801 BACKER RESERVOIR
0602 BARK LAKE
0803 BLUE MESA RESERVOIR
0804 CHEHRY CREEK LAKE
0805 C'JCriARAS RESERVOIR
0806 DILLON RESERVOIR
0807 GKAND LAKE
0808 GREEN MOUNTAIN RESERVOIR
0809 HOLBROOK LAKE
0810 LAKE MEREDITH
0811 MILTON RESERVOIR
0812 NAVAJO RESERVOIK
0813 SHADOW MOUNTAIN LAKE
MEDIAN
TOTAL P
0.023
0.930
0.019
0.054
0.363
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
lbl.750
366.500
391.167
490.333
489.667
429.333
479.400
427.000
MEAN
CrtLORA
5.333
26.767
6.817
23.322
27.400
3. ISO
4.900
5.833
111.933
164.678
5.900
2.180
5.700
15-
MIN 00
9.400
10.200
13.800
10.000
14.800
9.200
10.200
9.100
9.000
10.400
9.200
10.000
9.200
MEDIAN
OISS QtJTHO g
0.006
0.730
0.005
0.007
0.015
0.002
0.003
0.002
0.026
0.098
0.808
0.013
0.003
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PER-.ENT or LAKES *;TM HIGH*;* VALUES
LAKE
CODE LAKE NAME
OflOl BARKER RESERVOIR
OR02 BARS LAKE
0803 8LUE MESA RESERVOIR
0804 CHERRY CREEK LAKE
0805 CUCHARAS RESERVOIR
0806 DILLON RESERVOIR
0807 GRAND LAKE
0808 GREEN MOUNTAIN RESERVOIR
0809 HOLBROOK LAKE
0810 LAKE MEREDITH
0811 MILTON RESERVOIR
0812 NAVAJO RESERVOIR
0813 SHADOW MOUNTAIN LAKE
OF LAKES WT--I
VALUES)
MEDIAN
TOTAL P
58 <
0 (
75 (
42 (
33 <
100 <
83 (
92 <
25 (
17 <
8 (
50 (
67 (
7)
0)
9)
5)
4)
12)
10)
11)
3)
2)
1)
6)
8)
MEDIAN
INORG N
42 (
H (
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 (
8 (
0 (
50 <
100 (
67 (
9)
2)
5)
4)
3)
11)
10)
7)
1)
0)
6)
12)
8)
15-
MIN DO
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
58 1
B 1
67 1
50 1
33 1
96 1
79 (
96 1
25 <
17 <
0 (
42 <
79 (
[ 7)
; i)
1 8)
1 6)
1 4)
: ll>
: 9)
11)
; 3)
: 2>
0)
5)
9)
INDEX
NO
358
10<.
35*
291
157
521
453
479
183
85
143
296
433
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LAKES RANKED BY INDEX NOS.
LAKE CODE LAKE NAME INDEX NO
1 0806 DILLON RESERVOIR 521
2 0808 GREEN MOUNTAIN KESERVOIR 479
3 0807 GRAND LAKE 453
4 0813 SHADOW MOUNTAIN LAKE 433
5 0801 BARKER RESERVOIR 358
6 0803 BLUE MESA RESERVOIR 354
7 0812 NAVAJO RESERVOIR 296
8 0804 CHERRY CREEK LAKE 291
9 0811 MILTON RESERVOIR 183
10 0809 HOLBROOK LAKE 163
11 0805 CUCHARAS RESERVOIR 157
12 0802 BARR LAKE 104
13 0810 LAKE MEREDITH 85
-------
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
<•'
Kilograms x 2.205 = pounds
Kilograms/square kilometer x 5.711 = Ibs/square mile
-------
APPENDIX C
TRIBUTARY FLOW DATA
-------
TRIBUTARY FLOW INFORMATION FOR COLORADO
LA
-------
TRIBUTARY FLO* INFORMATION FOR COLORADO
08/09/76
LA,THLY FLOnS AND DAILY FLOWSfCMS)
0801C1
0801ZZ
MONTH YEAR
9
10
11
13
1
?
3
4
5
6
7
8
9
10
11
12
1
2
3
4
5
6
7
8
74
74
74
75
75
75
75
75
75
75
75
74
74
74
74
75
75
75
75
75
75
75
75
MEAN FLOW DAY
0.818
0.818
0.333
0.631
1.212
0.779
0.493
0.490
1.246
1.416
1.416
1.416
0.011
0.008
0.003
0.003
0.0
0.0
0.003
0.025
0.212
0.311
0.085
0.028
29
22
17
18
19
20
16
22
21
4
13
1
FLOW DAY
0.595
0.396
0.283
1.416
1.416
1.416
0.142
0.538
1.416
1.416 29
1.416
1.416 19
FLOW DAY
FLO*
1.416
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APPENDIX D
PHYSICAL and CHEMICAL DATA
-------
STORET RETRIEVAL DATE 76/08/10
DATE
FROM
TO
75/05/07
75/08/26
75/10/10
TIME
OF
DAY
09 00
09 00
09 00
09 00
09 00
11 15
11 15
11 15
11 15
11 15
11 15
10 15
10 15
10 15
10 15
10 15
DEPTH
FEET
0000
0005
0015
0048
0081
0000
0005
0018
0040
0080
0120
0000
0005
0015
0035
0061
00010
WATER
TEMP
CENT
3.9
3.7
3.8
3.8
3.9
15.6
15.7
15.6
9.7
7.4
7.0
9.8
9.8
9.8
9.7
9.5
080101
39 57 56.0 105 29 00.0 3
BARKER RESERVOIR
08013 COLORADO
091091
11EPALES
2111202
0085 FEET DEPTH CLASS
00300
DO
MG/L
9.6
9.4
9.4
9.4
9.4
7.6
7.4
7.6
7.0
6.4
5.6
7.8
7.4
7.4
7.6
7.0
00077
TRANSP
SECCHI
INCHES
51
96
120
00094
CNDUCTVY
FIELD
HICROMHO
28
38
38
37
39
29
32
29
29
29
27
27
28
28
27
28
00400
PH
SU
8.80
8.80
8.70
9.09
8.70
8. 35
8.20
8.00
7.40
7.00
6.90
8.25
8.10
8.00
8.50
8.05
00410
T ALK
CAC03
MG/L
26
26
25
23
24
18
16
16
17
20
20
15
13
12
13
13
00610
NH3-N
TOTAL
MG/L
0.020K
0.020K
0.020
0.020
0.020
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.080
0.020
0.020K
0.020K
0.020K
00
00625
TOT KJEL
N
MG/L
0.400
0.600
0.400
0.400
0.400
0.200
0.200K
0.200K
0.200
0.200
0.200
0.700
0.400
0.400
0.400
0.400
00630
N02&N03
N-TOTAL
MG/L
0.060
0.080
0.080
0.080
0.090
0.020K
0.020K
0.020K
0.020
0.060
0.100
0.040
0.020
0.020K
0.020
0.020
00671
PHOS-DIS
ORTHO
MG/L P
0.012
0.009
0.007
0.006
0.005
0.016
0.006
0.003
0.005
0.003
0.005
0.025
0.011
0.006
0.009
0.010
DATE
FROM
TO
75/05/07
75/08/26
75/10/10
TIME DEPTH
OF
DAY FEET
09 00 0000
09 00 0005
09 00 0015
09 00 0048
09 00 0081
11 15 0000
11 15 0005
11 15 0018
11 15 0040
11 15 0080
11 15 0120
10 15 0000
10 15 0005
10 15 0015
10 15 0035
10 15 0061
00665
PHOS-TOT
MG/L P
0.037
0.037
0.035
0.037
0.038
0.028
0.015
0.010
0.011
0.012
0.019
0.057
0.023
0.023
0.031
0.022
32217 00031
CHLRPHYL INCDT LT
A REMNING
UG/L PERCENT
0.6
3.7
8.2
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
STORE" RE-TRI £V AL DATE 76/frS/!0
DATE TIME DEPTH
FROM OF
TO DAY FEET
75/05/07 09 30 0000
09 30 0005
09 30 0017
75/08/26 11 40 0000
11 40 0005
11 40 0015
11 40 0026
75/10/10 10 40 0000
10 40 0005
10 40 0012
00010
WATER
TEMP
CENT
3.7
3.7
3.7
15.4
15.4
15.1
13.1
9.6
9.6
9.5
080102
39 57 51.0 105 29 48.0 3
BARKER RESERVOIR
08013 COLORADO
091091
HEP ALES
2111202
0021 FEET DEPTH CLASS
00300
DO
MG/L
10.8
9.6
9.2
7.0
7.6
7.8
7.0
7.2
7.4
7.4
00077
TRANSP
SECCHI
INCHES
48
75
96
00094
CNOUCTVY
FIELD
MICROMHO
39
38
38
32
32
32
28
28
28
00400
PH
SU
8.50
8.80
8.40
9.10
8.80
8.40
8.00
8.50
8.15
7.90
00410
T ALK
CAC03
MG/L
24
23
24
18
20
15
12
12
13
10
00610
NH3-N
TOTAL
MG/L
0.030
0.020
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
00
00625
TOT KJEL
N
MG/L
0.400
0.500
0.400
0.200
0.200K
0.200K
0.200K
0.300
0.400
0.300
00630
N02&N03
N-TOTAL
MG/L
0.090
0.080
0.080
0.020K
0.020K
0.020K
0.020K
0.230
0.030
0.020K
00671
PHOS-DIS
ORTHO
MG/L P
0.006
0.005
0.006
0.002
0.002K
0.006
0.003
0.011
0.010
0.006
DATE
FROM
TO
75/05/07
75/08/26
75/10/10
TIME DEPTH
OF
DAY FEET
09 30 0000
09 30 0005
09 30 0017
11 40 0000
11 40 0005
11 40 0015
11 40 0026
10 40 0000
10 40 0005
10 40 0012
00665
PHOS-TOT
M6/L P
0.034
0.040
0.035
0.013
0.011
0.015
0.015
0.032
0.018
0.018
32217
CHLRPHYL
A
UG/L
9.0
3.7
6.8
00031
INCDT LT
REMNING
PERCENT
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
APPENDIX E
TRIBUTARY AND WASTEWATER
TREATMENT PLANT DATA
-------
STORE! RETRIEVAL DATE 76/08/10
DATE TIME DEPTH N024N03
FROM OF
TO DAY FEET
75/06/29 15 15
75/07/14 18 00
75/08/01 18 50
75/08/19 18 10
0801A1
39 58 00.0 105 28 54.
MIDDLE BOULDER CREEK
08 7.5 TUNGSTEN
0/BA*KER RESERVOIR
BNK SELOrt DAM .95 MI
11EPALES
0 4
091091
S* OF TUNGSTEN
2111204
0000 FEET DEPTH CLASS 00
0630
*N03
OTAL
IG/L
0.020
0.025
0.015
0.025
00625
TOT KJEL
N
MG/L
0.350
0.750
0.200
0.100
00610
NH3-N
TOTAL
MG/L
0.012
0.015
0.005
0.020
00671
PHOS-DIS
ORTMO
MG/L P
0.005
0.005K
0.005K
0.005K
00665
PHOS-TOT
MG/L P
0.010
0.010K
0.010K
0.010
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
STORE! RETRIEVAL DATE 76/1-i/lO
39 57 42.0 105 30 21.0 4
MIDDLE BOULDER CREEK
08 7.5 NEDERLAND
T/BARKER RESERVOIR 091091
WLKWAY 150 YDS DSTRM BRG .2 M ESE NDRl_ND
11EPALES 211120*
0000 FEET DEPTH CLASS 00
DATE
FROM
TO
74/09/29
74/11/17
74/12/18
75/01/19
75/02/20
75/03/16
75/04/22
75/05/21
75/06/04
75/06/29
75/07/14
75/08/01
75/08/19
TIME DEPTH
OF
DAY FEET
10 00
13 35
16 00
11 15
09 30
10 30
17 25
17 15
18 57
15 50
18 20
19 10
17 50
00630
N02&NC3
N-TOTAt
MG/L
3.6-30
0.152
0.152
0.160
0.168
0.176
0.130
0.645
0.0*0
0.930
0.060
0.0 IS
0.025
00625
TOT KJEL
N
MG/L
0.100K
0.100
0.400
0.900
0.100K
0.300
0.150
0.300
0.550
0.200
0.400
0.350
0.100
00610
NH3-N
TOTAL
MG/L
0.030
0.010
0.024
0.032
0.008
0.016
0.020
0.015
0.030
0.025
0.015
0.005
0.010
00671
PHOS-DIS
ORTHO
MG/L P
0.005K
0.010
0.008K
0.008K
0.008K
0.008K
0.005K
1.500
0.005K
0.005K
0.005K
0.005K
0.005K
00665
PHOS-TOT
MG/L P
0.005K
0.010
0.010K
0.0 10K
0.010K
0.010K
0.020
0.030
0.040
0.010K
0.030
0.010K
0.010K
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
STORET RETRIEVAL DATE 76/08/10
DATE TIME DEPTH N02&N03
FROM OF
TO DAY FEET
74/09/29
74/11/17
74/12/ia
75/01/19
75/02/20
75/03/16
75/04/22
75/05/21
75/06/04
75/06/29
75/07/14
75/08/01
75/08/19
11 30
13 15
15 45
10 15
09 15
10 00
17 52
16 55
18 32
15 00
18 00
18 54
18 00
0801C1
39 57 55.0 105 28 50.
GRAVETY CANAL
Q8 7.5 TUNGSTE^
0/BARKER RESERVOIR
CLVRT BELO S SPLwAY .
11EPALES
0000 FEET DEPTH CLASS 00
0 4
091091
4 MI SW OF TUNGSTEN
2111204
0630
&N03
OTAL
IG/L
0.464
0.064
0.056
0.080
0.096
0.096
0.105
0.035
0.015
0.025
0.030
0.025
0.010
00625
TOT KJEL
N
MG/L
0.100K
0.400
0.100K
2.325
0.300
0.300
0.150
0.400
0.300
0.500
0.551
0.250
0.100
00610
NH3-N
TOTAL
MG/L
0.025
0.030
0.024
0.040
0.032
0.024
0.030
0.020
0.020
0.015
0.025
0.010
0.015
00671
PHOS-DIS
ORTHO
MG/L P
0.005K
0.005K
0.008K
0.008K
0.008
0.008K
0.005
0.005K
0.020
0.005K
0.005K
0.010
0.005K
00665
PHOS-TOT
MG/L P
0.005K
0.0 10K
0.010
0.010K
0.010
0.030
0.010K
0.040
0.020
0.025
0.010
0.010K
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
S.IORET_RETRIEVAL DATE 76/08/09
DATE TIME DEPTH N02W403
FROM OF
TO DAY FEET
75/02/03
75/03/04
75/04/04
75/04/30
75/06/01
75/07/01
75/08/01
75/09/01
75/10/03
75/11/02
75/12/08
76/01/06
09 00
15 00
09 00
09 00
09 00
10 00
14 00
10 00
13 66
11 00
080IXA PD0801XA ~ P000492"
40 57 50.0 105 30 50.0 4
NEDERLAND
08 7.5 NEDERLAND
T/BARKER RES. 091091
NORTH BEAVER CREEK
11EPALES 2141204
0000 FEET DEPTH CLASS 00
0630
fcN03
OTAL
G/L
0.160
0.320
0.240
0.400
0.350
0.650
0.100
0.125
0.425
0.900
0.375
0.200
00625
TOT KJEL
N
MG/L
22.000
21.000
17.000
16.300
11.000
15.800
14.500
21.000
12.500
18.000
26.000
30.000
00610
NH3-N
TOTAL
MG/L
11.000
11.000
9.200
5.400
3.500
2.200
6.100
9.000
7.900
8.350
10.500
12.000
00671
PHOS-OIS
ORTHO
MG/L P
4.900
4.800
3.680
2.900
3.150
2.900
4.500
5.400
4.700
4.600
5.100
5.450
00665
PHOS-TOT
MG/L P
5.900
5.300
4.700
4.000
4.000
3.900
4.600
6.400
5.750
5.500
6.300
6.700
50051
FLOW
RATE
INST MGD
0.053
0.061
0.067
0.067
0.067
0.067
0.067
0.067
0.067
0.054
0.059
0.048
50053
CONDUIT
FLOW-MOD
MONTHLY
0.058
0.061
0.067
0.067
0.054
0.067
0.067
0.067
0.067
0.067
0.067
0.054
------- |