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

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                            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

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                                   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

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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 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.

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     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
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

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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

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                                     VI
    BARR LAKE
  Tributary Sampling Site
X Lake Sampling Site
• Sewage Treatment Facility
          Scale
                   Mi.
                                                                    4000—
                                                                    39°45'—

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                                 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.

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                             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.

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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".

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                                      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.

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                             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

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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

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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.

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                                     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

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                                       10

VII.   LITERATURE REVIEWED

      Anderson, R. Dennis, 1974.  Personal communication (waterbody
          information and morphometry).   CO Dept. of Health, Denver.

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                                   Tl




VIII, APPENDICES
                                    APPENDIX A
                                   LAKE RANKINGS

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    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

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           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

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                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

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        APPENDIX C
PHYSICAL and CHEMICAL DATA

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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

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       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

-------