U.S. ENVIRONMENTAL PROTECTION AGENCY
NATIONAL EUTROPHICATION SURVEY
WORKING PAPER SERIES
REPORT
ON
BARRLAKE
ADAMS COUNTY
COLORADO
EPAEGIONVIII
WORKING PAPER No, 765
CORVALLIS ENVIRONMENTAL RESEARCH LABORATORY - CORVALLIS, OREGON
and
ENVIRONMENTAL MONITORING & SUPPORT LABORATORY - LAS VEGAS, NEVADA
-------
REPORT
ON
BARRLAKE
ADAMS COUNTY
COLORADO
EPAEGIONVIII
WORKING PAPER No, 766
WITH THE COOPERATION OF THE
COLORADO DEPARTMENT OF HEALTH
AND THE
COLORADO NATIONAL GUARD
JULY, 1977
-------
1.
CONTENTS
Page
Foreward i i
List of Colorado Study Lakes and Reservoirs iv
Lake and Drainage Area Maps v, vi
Sections
I. Introduction 1
II. Conclusions 1
III. Reservoir and Drainage Area Characteristics 3
IV. Water Quality Summary 4
V. Waste Sources 8
VI. Mean Nutrient Concentrations in Ungaged Streams 9
VII. Literature Reviewed 10
VIII. Appendices 11
-------
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 formula-ting
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.
-------
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.
-------
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
Summlt
Grand
Summit
Otero
Crow! ey
Weld
Archuleta, CO; San
Juan, Rio Arriba, NM
Grand
-------
r
I Speer Canal >/^ 1 w. Burlingtdn
•' \$ / ^ . «•
Extension Ditch
•J ( XtereT
P
°ana\
Tributary Sampling Site
X Lake Sampling Site
?Km.
Scale
i Mi.
104°48'
W4°46'
10444
3J56-—I
-------
VI
BARR LAKE
Tributary Sampling Site
X Lake Sampling Site
• Sewage Treatment Facility
Scale
Mi.
4000—
39°45'—
-------
BARR LAKE
STORE! NO. 0802
I. INTRODUCTION
Accurate flow data could not be provided for Barr Lake by the
U.S. Geological Survey because water enters and leaves the reservoir
through ungaged inlet and outlet canals. Therefore, this report
primarily pertains to the reservoir sampling data. However, tributary
and treatment plant samples were collected, and the results of analyses
of the samples are presented in Appendix D.
II. CONCLUSIONS
A. Trophic Condition:
Survey data indicate that Barr Lake is eutrophic. It
ranked twelfth in overall trophic quality when the 13 Colorado
lakes and reservoirs sampled in 1975 were compared using a com-
bination of six parameters*. All of the other waterbodies had
less median total phosphorus, 11 had less median dissolved ortho-
phosphorus, 11 had less median inorganic nitrogen, ten had less
mean chlorophyll a^, and seven had greater mean Secchi disc trans-
parency.
Survey limnologists observed surface concentrations of algae
in August and October.
B. Rate-Limiting Nutrient:
The results of the algal assay Indicate that Barr Lake was
* See Appendix A.
-------
2
nitrogen limited at the times the assay samples were collected
(05/05/75 and 10/10/75).
The reservoir data indicate nitrogen limitation all three
sampling times.
-------
III. RESERVOIR AND DRAINAGE BASIN CHARACTERISTICS'1"
A. Morphometry :
1. Surface area: 7.57 kilometers2.
2. Mean depth: 5.2 meters.
3. Maximum depth: 11.9 meters.
4. Volume: 39.657 x Itf m3.
5. Mean hydraulic retention time: Unknown.
B. Precipitation*:
1. Year of sampling: 42.3 centimeters.
2. Mean annual: 32.9 centimeters.
t Table of metric equivalents—Appendix B.
tt Anderson, 1974.
* See Working Paper No. 175, "...Survey Methods, 1973-1976".
-------
4
IV. WATER QUALITY SUMMARY
Barr Lake 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 7.9 meters at station 1 and 4.9 meters at station 2.
The sampling results are presented in full in Appendix C and are
summarized in the following table.
-------
A.
OF PHYSICAL
PAHA-IETER
TEMP (C)
OISS OXY (MG/U
CNDCTVY (MC^OMO)
PH (STAND UNITS)
TOT ALK (MG/D
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)
5ECCHI (METERS)
1ST SAMPLING ( 5/
? SITES
5/75)
RANGE
11.7 - 12.9
7.? - 9.2
723. - 752.
B.I - 8.4
186. - 250.
1.730 - 1.810
1.170 - 1.730
1.420 - 2.140
1.390 - 7.310
6.500 - 8.300
3.530 - 8.730
8.010 - 9.850
4.3 - 12.8
1.8 - 3.C
MEAN
12.2
8.6
736.
8.3
227.
1.761
1.517
1.573
5.943
7.371
7.516
8.944
8.5
2.4
MEDIAN
12.0
8.8
731.
8.2
232.
1.750
1.640
1.470
6.510
7.300
7.980
8.770
8.5
2.4
CHEMICAL CHARACTERISTICS FOR BARR LAKE
STORET COOE 0302
2NO SAMPLING ( 8/26/75)
2 SITES
RANGE
21.5 - 24.4
4.8 - 16.6
590. - 608.
9.0 - 9.4
149. - 156.
0.718 - 0.798
0.492 - 0.758
0.020 - 0.090
0.030 - 0.260
1.400 - 2.900
0.050 - 0.320
1.440 - 2.920
29.0 - 74.4
0.3 - 0.6
MEAN
22.4
8.9
595.
9.2
154.
0.747
0.616
0.047
0.093
1.717
0.140
1.763
51.7
0.5
MEDIAN
22.1
7.5
591.
9.2
155.
0.741
0.613
0.045
0.060
1.450
0.100
1.525
51.7
0.5
3RO SAMPLING (10/10/75)
2 SITES
RANGE
13.1 - 14.0
7.2 - 9.0
551. - 561.
8.8 - 9.0
160. - 167.
0.7bO - 0.986
0.664 - 0.770
0.150 - 0.170
0.820 - 1.690
2.000 - 3.600
0.980 - 1.650
2.170 - 3.760
19.6 - 32.5
MEAN MEOIAN
13.5 13.5
8.2 3.1
557.
8.9
162.
0.905
0.6 -
1.0
1.182
2.910
26.0
0.8
557.
9.0
162.
0.920
0.700 0.680
0.160 0.160
1.022 0.395
2.750 2.650
1.055
2.810
26.0
0.8
-------
B. Biological Characteristics:
1. Phytoplankton -
2.
Sampling
Date
05/05/75
08/26/75
10/10/75
Chlorophyll a^ -
Sampl i ng
Date
05/05/75
08/26/75
10/10/75
Dominant
Genera
1. Chroomonas sp.
2. Cryptomonas sp.
3. Schroederia s£.
4. Cysts
Total
1. Apham'zomenon sp.
2. Gomphosphaeria sp.
3. Microcystis sp.
4. Phormidium sp.
Total
1 . Apham'zomenon sp.
2. Melosira sp.
3. Microcystis sp.
4. Nitzscnia sp.
5. Chroomonas (?) sp.
Total
Station
Number
1
2
1
2
1
2
Algal Units
per ml
1,148
836
313
52_
2,349
3,265
96
96
48
3,505
1,012
156
78
78
78
1,402
Chlorophyll a
(ug/1)
4.3
12.8
74.4
29.0
32.5
19.6
-------
C. Limiting Nutrient Study:
1. Autoclaved, filtered, and nutrient spiked -
a. May sample -
Spike (mg/1)
Control
0.050 P
0.050 P + 1.0 N
1.0 N
b. October sample -
Ortho P
Cone, (mg/1)
Inorganic N
Cone, (mg/1)
Maximum yield
(mg/1-dry wt.)
1.350
1.400
1.400
1.350
6.040
6.040
7.040
7.040
186.3
175.2
228.6
210.1
Spike (mg/1)
Control
0.050 P
0.050 P + 1.0 N
1.0 N
Ortho P
Cone, (mg/1)
0.630
0.680
0.680
0.630
Inorganic N Maximum yield
Cone, (mg/1) (mg/1-dry wt.)
1.120
1.120
2.120
2.120
42.8
42.0
71.4
71.0
2. Discussion -
The control yields of the assay alga, Selenastrum capri-
cornutum, indicate that the potential primary productivity
of Barr Lake was very high at the times the assay samples
were collected (05/05/75 and 10/10/75). Also, the signifi-
cant growth response in both assays to the addition of nitrogen
alone and the lack of response when only phosphorus was added
indicate nitrogen was limiting at those times.
The reservoir data indicate nitrogen limitation all three
sampling times. The mean inorganic nitrogen to orthophosphorus
ratios were 5 to 1 in May, <1 to 1 in August, and 2 to 1 in
October; and nitrogen limitation would be expected.
-------
8
V. Waste Sources:
1. Known municipal* -
Name
Pop.
Served
Littleton 55,000
South Lakewood 16,500
Englewood 85,000
2. Known industrial - None
Treatment
Mean Flow
(m'/d)
tr. filter 15,772.5
act. sludge 6,158.6
act. sludge 33,646.0
Receiving
Water
South Platte R.
South Platte R.
South Platte R.
* Treatment plant questionnaires.
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VI. Mean Nutrient Concentrations in Ungaged Streams:
Tributary
Speer Canal
0'Brian Canal
Denver-Hudson Canal
Unnamed Ditch (C-l)
Unnamed Stream (D-l)
Mean Total P
Cone, (mg/1)
1.664
1.960
2.441
0.270
1.611
Mean Total N
Cone, (mg/1)
565
701
851
855
5.861
-------
10
VII. LITERATURE REVIEWED
Anderson, R. Dennis, 1974. Personal communication (waterbody
information and morphometry). CO Dept. of Health, Denver.
-------
Tl
VIII, APPENDICES
APPENDIX A
LAKE RANKINGS
-------
T
LAKE
CODE
0»01
0803
0803
080*
0605
0806
0807
0808
0809
0810
0811
0812
0313
LAKE
LIKE
BLUE MESA
CHERRY CREEK LAKE
CUCHARAS ^ESESVOIR
DILLON RESERVOIR
GUANO LAKE
GREEN MOUNTAIN RESERVOIR
HOLBROOK LAKE
LAKE MEREDITH
MILTON RESERVOIR
NAVAJO RESERVOIR
SHADOW MOUNTAIN LAKE
MEDIAN
TOTAL P
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
0.0*5
1.C9C
0.0<»0
0.040
0.040
0.040
0.040
0.040
0.073
0.110
2.280
0.050
0.040
500-
MEAN SEC
419. OQO
<*51.333
395.750
469.333
490.000
181.750
366.500
391.167
490.333
489.667
429.333
479.400
427.000
MEAN
CrtLORA
5.333
215.767
6.817
23.322
27.400
3.150
4.900
5.833
111.933
164.678
5.900
2.180
5.700
15-
MlN 00
9.4CO
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 ORTnO *>
0.006
0.730
0.005
0*007
0.015
0.002
0*003
0.002
0.02«
0.098
0.808
0.013
0*003
-------
LAKES WJT« M!C)HC.P VALUES «MJM«FR OF LAKES
LAKE
CODE LAKE NAME
0801 BARKER RESERVOIH
OftO? 8A9S LAKE
0803 BLUE MESA RESERVOIR
080^ CHERRY CREEK LAKE
0805 CUCHARAS RESERVOIH
0806 OILLON RESERVOIR
0807 GRAND LAKE
OR08 GREEN MOUNTAIN RESERVOIR
0809 HOLdROOK LAKE
0810 LAKE MEREDITH
0811 MILTON RESERVOIR
0812 NAVAJO RESERVOIR
0813 SHADOW MOUNTAIN LAKE
MEDIAN
TOTAL P
58 <
0 (
75 <
42 <
33 (
100 (
83 (
92 (
25 (
17 <
a (
50 (
67 (
7)
0)
9)
5)
4)
12)
10)
11)
3)
2)
1)
6)
8)
MEDIAN
INORG N
42 (
e (
87 (
87 (
58 (
5B <
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 (
SO (
25 (
58 (
8)
5)
9)
4)
1)
12)
11)
10)
0)
2)
6)
3)
7)
MEAN
CHLORA
75 i
17 1
42 I
33 (
25 1
92 (
83 (
58 1
a i
0 I
50 (
100 (
67 (
I 9)
I 2)
I 5)
! 4)
I 3)
i ID
! 10)
: 7)
: i)
0)
6)
12)
8)
15-
MIN DO
58 1
29 1
8 1
46 (
0 (
75 (
29 <
92 <
100 (
17 (
75 (
46 (
75 (
[ 7)
1 3)
: i)
; 5>
. 0)
8)
3)
11)
12)
2)
8)
5)
8)
MEDIAN
DISS ORTHO P
58 I
a i
67 1
50 (
33 (
96 (
79 (
96 (
25 (
17 (
0 (
42 (
79 <
1 7)
1 1)
1 8)
: 6>
: 4)
: in
9)
ID
3)
2)
0)
5)
9)
INDEX
NO
358
104
35<*
291
157
521
453
479
183
85
113
296
433
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LAKES RANKED BY INDEX NUS.
RANK LAKE CODE LAKE NAME INDEX NO
1 0806 DILLON RESEMV013 531
2 0808 GREEN MOUNTAIN ^ESE»VOIR 479
3 0807 GRAND LAKE 453
4 0813 SHADO* MOUNTAIN LAKE 433
5 0801 BARKER RESERVOIR 358
6 0603 8LUE 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 0905 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
•
Kilograms x 2.205 = pounds
Kilograms/square kilometer x 5.711 - Ibs/square mile
-------
APPENDIX C
PHYSICAL and CHEMICAL DATA
-------
O^FT 'ETP.IEVAL DATE 76/09/24
030201
39 56 27.0 104 44 53.0 3
3ARR LAKE
08001 COLORADO
091091
11EPALES 2111202
0030 FEET OtPTh CLASS 00
DATE
FROM
TO
75/05/05
75/08/26
75/10/10
T1'4E DEPTH
OF
DAY FEET
14 20 0000
14 20 0005
14 20 0015
14 20 0026
13 35 0000
13 35 0005
13 35 0015
11 30 0000
11 30 0005
11 30 0015
00010
WATER
TEMP
CENT
12.7
12.8
12.9
12.0
24.4
22.2
21.6
13.7
13.3
00300
DO
MG/L
8.4
8.4
8.8
7.2
16.6
7.6
4.8
8.6
8.0
8.2
OCC77
TRANSP
SECCHI
INCHES
120
12
24
00094
CNDUCTVY
FIELD
MICROMHO
752
749
749
731
608
591
591
557
554
551
00400
PH
su
8.15
8.15
8.20
8.20
9.40
9.30
9.00
8.80
8.90
9.00
00410
T ALK
CAC03
MG/L
250
226
232
234
149
154
156
161
162
164
00610
NIH3-N
TOTAL
Mo/L
6.460
7.310
6.510
7.160
0.040
0.030
0.260
0.970
0.860
0.820
00625
TOT KJEL
N
MG/L
6.500
7.000
6.900
7.300
2.900
1.700
1.400
3.600
2.800
2.500
00630
N02SN03
M- TOTAL
MG/L
1.510
1.420
1.470
1.470
0.020K
0.020K
0.060
0.160
0.160
0.160
00671
PHOS-UIS
ORTHO
MG/L P
1.170
1.250
1.680
1.730
0.492
0.586
0.632
0.664
0.680
0.680
DATE
FROM
TO
75/05/05
75/08/26
75/10/10
TIME DEPTH
OF
DAY FEET
14 ?0 0000
14 20 0005
14 20 0015
14 20 0026
13 35 0000
13 35 0005
13 35 0015
11 30 0000
11 30 0005
11 30 0015
00665
PHOS-TOT
MG/L P
1.780
1.750
1.740
1.770
0.798
C.728
0.756
0.900
0.910
0.944
32217
CHLRPHYL
A
UG/L
4.3
74.4
32.5
00031
INCOT LT
REMNING
PERCENT
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
RETRIEVAL DATE 7to/09/24
080202
39 56 27.0 104 45 43.0 3
HARP LAKE
06001 COLORADO
DATE
FRO"
TO
75/05/05
75/08/26
75/10/10
Tivr DEPTH
OF
DAY FEET
14 55 0000
14 55 0005
14 55 0012
13 40 0000
13 40 0005
13 40 0010
11 15 0000
11 15 0005
11 15 0016
00010
*ATER
TEMP
CENT
11.7
11. a
11.7
22,5
22.0
21.5
1*.0
13.5
13.1
00300 00077 00094
DO T«ANSP CNDUCTVY
SECCHI FIELD
MG/L INCHES MIC-iOMHO
9.2
9.0
9.2
9.6
7.2
7.4
9.0
8.0
7.2
72
24
40
723
724
723
598
591
590
561
556
560
11EPA
0016
00400
PH
su
8.40
8.35
8.35
9.25
9.15
9.10
9.00
9.00
9.00
LES
211
FEET DEPTH CLASS
00410
T ALK
CAC03
MG/L
234
228
186
153
1S6
155
167
160
160
00610
NH3-N
TOTAL
Mb/L
6.180
6.590
1.390
0.030
0.080
0.120
0.670
0.920
I.b90
1202
00
00625
TOT KJEL
N
MG/L
3.300
7.900
7.700
1.400
1.400
1.500
2.200
2.000
3.400
00630
N02&NG3
N-TOTAL
MG/L
1.55C
1.450
2.140
0.040
0.050
0.090
0.150
0.170
0.160
U0b71
PrtOS-uIS
0»TrtO
MG/L P
1.660
1.490
1.640
0.600
0.626
0.758
0.678
0.770
0.730
00665
DATE TIME DEPTH PHOS-TOT
FROM OF
TO DAY FEET MG/L P
75/05/05 14 55 0000
14 55 0005
14 55 0012
75/08/26 13 40 0000
13 40
75/10/10
0005
13 40 0010
11 15 0000
11
11
15 0005
15 0016
32217
CHLRPHYL
A
OG/L
1.750
1.810
1.730
0.718
0.730
0.752
0.760
0.930
0.986
12.8
29.0
19.6
00031
INCDT LT
REMNING
PERCENT
-------
APPENDIX D
TRIBUTARY AND WASTEWATER
TREATMENT PLANT DATA
-------
ST3«ET KETQIEVAL DATE 76/09/24
080241
39 57 32.0 10* 45 17.0 4
SPEt- CANAL
U8 7.5 s^IGnT'JN
U/ = A-vw LAKE 091091
6NK 20 FT NE OF *D GOING OVtK 0AM
11EPALES 2111204
0000 FEET DtPTri CLASS 00
DATE
r POM
TO
74/1 1/29
75/02/24
75/03/19
75/C4/30
75/05/15
75/05/28
75/06/30
75/07/09
75/07/21
75/08/01
TIM
OF
DAY
10
09
11
10
11
13
11
09
10
c DEPTH
FEET
05
?0
30
45
30
00
00
00
20
00630
N02&N03
N-TOTAL
MG/L
1.540
1.360
0.008
0.620
0.900
1.300
1.100
0.710
1.200
0.375
00625
TOT KJEL
N
MG/L
22.000
7.500
1.000
1.650
4.400
5.100
3.480
3.700
1.510
6.200
00610
NH3-N
TOTAL
MG/L
12.600
5.100
0.024
0.860
2.400
?.630
0.2b5
1.700
0.420
0.026
00671
PnOS-OIS
ORTHO
MG/L P
3.400
1.680
0.024
0.250
0.360
1.450
0.390
1 .250
0.725
0.810
00665
PHOS-TOT
MG/L r»
6.900
1.850
0. 100
0.340
0.960
1.550
1.250
0.780
1.250
-------
ST3-ET RETRIEVAL DATE 76/09/24
DATE
FDQV
TO
74/C -J/28
74/11/29
75/01/30
75/02/24
75/03/19
75/04/30
75/05/15
75/05/28
75/06/30
75/07/09
75/07/21
75/08/01
75/08/11
TIME i
OF
DAY !
11 35
10 00
09 37
09 00
10 00
09 15
10 00
11 10
10 00
11 00
10 05
10 00
39 55 35.0 104 tt> 50.0 4
O'^RIAN CA.N4L
08 7.5 BrtlGriTUN
T/56«>< LA*£ 091091
6NK nOO FT Q«NSr-
-------
STjSET RETRIEVAL DATE 76/09/?4
39 57 00. C 104 44 30.0 4
0£N.E-»-HDD50\ CANAL
08 7.5 Ml HlGri LKS
LAKc.
oNK 300 FT S OF r(0 GOING
HE?Al_E5 211
0000 FEET OEPTn CLASS 00
091091
DATE
F*OM
TO
7<»/l 1/39
75/01/30
75/0^/30
75/05/15
75/05/38
75/06/30
75/07/09
75/07/ai
TIME DEPTH
OF
DAY FEET
1? 05
10 30
11 00
11 ?0
12 00
12 35
10 00
OOt.30
N02J.N03
N-TOTAL
MG/L
1.84C
1.555
1.150
0.070
1.250
0.810
0.050
0.690
006P5
TOT KJEL
N
MG/L
14.000
6.750
6.500
5.690
a. 900
3.^50
2.<*00
3.700
00610
NM3-N
TOTAL
MG/L
9. SCO
2.300
<*.
-------
STj=>ET RETRIEVAL DATE 76/09/24
DATE
FROM
TO
75/01/30
75/02/24
75/03/19
75/04/30
75/05/15
75/05/26
75/06/30
75/07/09
75/07/21
75/08/01
TIME DEPTH
OF
DAY FEET
09 45
09 45
08 55
11 15
09 00
09 40
10 45
10 30
10 30
09 55
00630
N02&N03
N-TOTAL
MG/L
0.096
0.055
0.055
0.005
0.020
1.350
0.015
1.900
0.010
1.650
00625
TOT KJEL
N
MG/L
0.9?3
0.400
1.000
0.550
0.850
5.200
0.700
1.150
1.125
1.500
00610
NH3-N
TOTAL
MG/L
0.165
C.040
0.135
0.050
0.055
3.150
0.030
0.055
0.045
0.180
00671
PHOS-DIS
ORTMO
MG/L P
0.041
0.016
0.020
0.025
0.032
1.450
0.040
0.115
0.055
0.375
3tC rtD 6^0
11EPALES
GOOD FEET
00665
PHOS-TOT
MG/L r>
0.060
0.030
0.030
0.040
0.050
1.450
0.040
0.230
0.155
0.620
0302C1
39 56 00.0 104 47 30.0 4
UNNAMED DITCH
03 7.5 SrUGnTGN
0910-J1
.2 Ml S OF I 80 S JCT'
2111204
DEPTH CLASS 00
-------
S>ET*IEV4L 'DATE 76/0^/2*
DATE TIME DEPT-t N02&N03
FROM OF
TO 04Y FEET
75/01/30
75/05/28
75/06/30
75/08/01
11
10
11
11
10
25
31
00
30
30
0602D1
39 55_45.0 104 ^3 50.0 4
UNNAMED ST^EA"
08 7.5 MI HIGH LKS
T/8AKS LA*E 091091
SEC *0 XING 4 MI E OF I 30.S JCT
IIE^ALES 21112U4
0000 FEET DEPTH CLASS 00
0630
&N03
OTAL
G/L
2.300
0.390
0.900
1.300
0.165
00625
TOT KJEL
N
"IG/L
12.000
6.100
3.750
1.350
1.050
00610
N'n3-N
TOT4L
MG/L
e.900
O.P30
2.000
0.510
0.020
00671
PrtOS-OIS
URTHO
MG/L P
2.^50
1.570
1.200
0.590
0.030
00665
PriOS-TOT
MG/L P
3.3oO
2.^00
1.270
0.705
0.380
-------
ET RETRIEVAL QATF 76/03/24
00630
DATE TIME DEPTH
TO
GAY FEET
74/11/20
75/03/19 10 00
75/05/2d 10 55
75/06/30 12 30
N-TOTAL
MG/L
1.050
0.250
0.960
00625
TOT KJEL
N
MG/L
24.000
ao.ooo
9.700
3.300
00610
NH3-Ni
TOTAL
MG/L
8.000
3.700
1.700
00671
PriOS-015
ORTHO
P
3.150
1.800
1.150
06021E
39 53 20.0 10^. 37 55.0
UNNAMED STREAM
08 7.b MI HlGri
T/8A^« LAKE
SEC "0 M!*G JUST £
11EP4LES
0000 FEET D£FT
0910*1
JF PATTOM
211120^
CLASS 00
00665
PHOS-TOT
MG/L P
3.900
2.200
1.270
-------
STOPET PET«!EVAL DATE 76/09/34
<,A AS0802XA P055000
39 3c< 10.0 105 01 00.0 4
LITTLETON
0300b 7.5 A^VAOA
T/BA--
75/01/31
75/02/38
CP(T>-
75/02/28
75/03/31
CP-
75/0^/2'*
75/05/07
CP(T)-
75/05/07
75/05/29
CP(T)-
75/05/29
75/06/16
CP(T>-
75/06/16
75/07/03
CPU)-
75/07/03
75/08/18
CP(T)-
75/08/18
75/09/02
CP(T>-
75/09/02
75/09/25
CPU)-
75/09/25
75/09/30
CP(T ) -
75/09/30
10 00
15 CO
10 00
14 00
10 00
14 00
10 00
14 00
10 00
14 00
10 00
14 00
10 00
14 00
10 00
14 00
10 00
14 00
10 00
14 00
10 00
14 00
10 00
14 00
0630 00625
NN03 TOT KJEL
OTAL N
G/L ^G/L
0.560
0.640
0.430
0.450
1.400
1.550
1.450
1.250
0.700
?.425
0.650
0.350
26.000
26.000
23.000
33.000
23.000
19.500
18.000
19.500
18.000
19.000
23.500
22.000
00610 00671 00665 50051 50053
NH3-N PriOS-OIS PriOS-TOT FLO* CONDUIT
TOTAL ORTHO «*TE FLO«-MGO
MG/L *G/L P MG/L t3 INST HOD MONTHLY
11.600
12.500
14.400
16.500
8.700
8.400
5.600
4.300
4.700
6.000
9. ICO
6.900
7.200
7.000
3.300
7.100
5.800
4.200
2.800
5.400
5.500
6.500
5.000
2.600
9.100
8.300
10.000
9.500
7.600
4.700
7.575
7.200
6.700
7.800
5.700
7.400
3.600
3.500
3.900
4.000
4.000
t.lOO
4.200
4.500
5.200
4.400
4.600
5.000
3.800
3.600
3.900
3.900
3.900
4.000
4.100
4.500
4.900
4.200
4.500
4.500
-------
STOSET RETRIEVAL DATE 76/OV/24
OATE
FRO"
TO
75/01/22
CP(T>-
75/01/22
75/02/26
CP(T) -
75/02/26
75/03/20
CP(T>-
75/03/20
75/04/22
CP(T>-
75/04/22
75/05/08
CP(T)-
75/05/08
75/05/29
CP-
75/05/29
75/06/23
CP(T) -
75/06/23
75/07/09
CP(T)-
75/07/09
75/07/31
CP-
75/07/31
75/08/20
CP-
75/08/20
75/09/10
CP-
75/09/10
75/10/02
CP(T)-
75/10/02
00630
TIME DEPTH N02&N03
OF N-TOTAL
DAY FEET MG/L
08
20
00
24
00
24
oo
24
00
24
00
24
00
24
00
24
00
24
(JO
24
00
24
00
24
CO
00
00
00
00
00
00
00
00
00
00
CO
00
00
00
00
00
00
00
CO
00
00
00
oc
0.
0
3
0
0
0
0
0
0
1
0
0
.240
.240
.240
.150
.300
.250
.200
.200
.625
.800
.050
.125
00625
TOT KJEL
N
MG/L
39.
33.
14.
32.
36.
27.
33.
25.
23.
22.
20.
26.
000
500
500
000
000
000
000
000
000
000
000
000
030?A3 Ab0302Xd
39 39 45.0 105 01 45.0 4
ENGLE«OOD
03 7.5 LAFAYETTE
T/BAKS RES
i. PLATTE ^Iv£« TO CANAL
11EPALES 21412C
OOCO FEET OEPTr, CLASS 00
00610 00671 00665 50051 50053
NH3-N PriOS-DIS PHOS-TOT FLOW CONDUIT
TOTAL ORTHO RATE FLO*-MGO
MG/L f- MG/L P INST MGO MONTHLY
P085000
17.300
17.300
27.000
15.000
10.500
7.500
8.000 10.000
13.600 9.700
9.700
8.500
7.360
7.430
10.500 8.840
5.200 10.500
19.000 6.900
7.900
8.700 10.500
8.500
11.000 6.600 6.100 10.500
7.600 7.100
7.800 9.000
12.000 7.400 8.700 8.490
6.900
7.600
7.630
8.500
7.960 8.500
9.590 8.150
9.510
6.700 8.600 9.610 9.350
9.780
6.800 6.500 7.900 10.500 10.600
9.000
9.140
-------
STORET KETSIEVAL DATE
0»02*.C ASOo02XC P016500
39 45 00.0 105 04 30.0 4
iOllTr- LAKE«OOC
03 7.5 KASSLEri
T/aA^-i fiES. 091091
S.PLATTE HIVE^
11EPALES 2141204
0000 FEET DEPTH CLASS 00
DATE
F->OM
TO
75/01/16
75/02/13
CP(T)-
75/02/13
75/03/0**
75/04/22
CP-
75/04/22
75/05/22
CP(T)-
75/05/22
75/06/05
CP(T)-
75/06/05
75/06/1?
CP(T)-
75/06/12
75/07/02
CP(T>-
75/07/02
75/07/22
CPU>-
75/07/22
75/08/07
CtJ(T) -
75/08/07
75/08/26
CP(T>-
75/08/26
75/09/16
CP(T>-
75/09/16
75/10/17
TIMF- DEPTH
OF
DAY
00
06
18
00
06
00
06
00
06
00
06
00
06
00
06
00
06
00
06
00
06
00
00630
N02«.N03
N-TOTAL
FEET
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
OP
00
00
00
00
00
MG/L
0
0
c
0
0
0
0
0
0
1
0
0
0
.240
.065
.080
.500
.100
.050
.050
.100
.050
.900
.050
.025
.075
00b25
TOT KJEL
N
MG/L
25.000
24.000
24.000
16.000
21.000
14.500
14.000
21.000
28.000
15.500
14.000
24.000
26.000
OC610
NH3-N
TOTAL
MG/L
10.000
10.000
10.400
3.700
5.000
1.600
3.900
5.550
3.200
2.700
4.200
6.100
10.250
00671
PHOS-DIS
ORTHO
MG/L P
6.375
5.160
8.600
4.500
4.700
1.750
5.300
4.250
3.400
5.000
3.100
9.300
9.550
00665
PnOS-TOT
50051
FLO*
RATE
MG/L P
7.500
v.300
9.100
5.300
5.800
2.550
6.300
5.100
5.100
5.800
3.900
11.000
11.500
INST
1
1
1
1
1
1
2
1
1
1
1
1
1
MGO
.200
.200
.200
.400
.500
.900
.000
.800
.900
.800
.800
.700
.400
50053
CONDUIT
FLO*-M6i)
MONTHLY
1.200
1.200
1.200
1.300
1.400
1.700
2.100
1.800
2.000
1.900
2.000
1.750
1.600
------- |