U.S. ENVIRONMENTAL PROTECTION AGENCY
NATIONAL EUTROPHICATION SURVEY
WORKING PAPER SERIES
REPORT
ON
CQTTONIOT) LAKE
SPINK COUNTY
SOUTH DAKOTA
EPA REGION VIII
WORKING PAPER No, 606
CORVALLIS ENVIRONMENTAL RESEARCH LABORATORY - CORVALLIS, OREGON
and
ENVIRONMENTAL MONITORING & SUPPORT LABORATORY - LAS VEGAS, NEVADA
T^G.P.O. 699-440
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REPORT
ON
corrcNWonD LAKE
SPINK COUNTY
SOUTH DAKOTA
EPA REGION VIII
WORKING PAPER No, 606
WITH THE COOPERATION OF THE
SOUTH DAKOTA DEPARTMENT OF ENVIRONMENTAL PROTECTION
AND THE
SOUTH DAKOTA NATIONAL GUARD
JANUARY/ 1977
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1
CONTENTS
Page
Foreward ii
List of South Dakota Study Lakes iv
Lake and Drainage Area Map v
Sections
I. Conclusions i
II. Lake and Drainage Basin Characteristics 1
III. Lake Water Quality Sunr’tary 2
IV. Nutrient Loadings 3
V. Literature Reviewed 7
VI. Appendices 8
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11
FOREWORD
The National Eutrophication Survey was initiated in 1972 in
response to an Administration comitment 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 [ 3O3(e)], water
quality criteria/standards review [ 3O3(c)], clean lakes [ 314(a,b)],
and water quality monitoring [ g106 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
freshwater lakes. Likewise, multivariate evaluations for the
relationships between land use, nutrient export, and trophic
condition, by lake class or use, are being developed to assist
in the formulation of planning guidelines and policies by EPA
and to augment plans implementation by the states.
ACKNOWLEDGMENT
The staff of the National Eutrophication Survey (Office of
Research & Development, U. S. Environmental Protection Agency)
expresses sincere appreciation to the South Dakota Departments of
Environmental Protection and Game, Fish and Parks for professional
involvement, to the South Dakota National Guard for conducting the
tributary sampling phase of the Survey, and to those wastewater
treatment plant operators who voluntarily provided effluent samples.
Allyn Lockner, Secretary, and Blame Barker and Duane Murphy,
Department of Environmental Quality; Douglas Hansen, Department
of Game, Fish and Parks; and James Hayden, Director, State Lakes
Preservation Comittee 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.
Major General Duane L. Corning, the Adjutant General of South
Dakota, and Project Officer Colonel Robert D. Chalberg, who directed
the volunteer efforts of the South Dakota National Guardsmen, are also
gratefully acknowledged for their assistance to the Survey.
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iv
NATIONAL EUTROPHICATION SURVEY
STUDY LAKES
STATE OF SOUTH DAKOTA
LAKE NAME COUNTY
Albert Kingsbury
Alvin Lincoln
Angostura Fall River
Brant Lake
Byron Beadle
Clear Marshall
Clear Minnehaha
Cochrane Deuel
Cottonwood Spink
Deerfield Pennington
Enemy Swim Day
Herman Lake
John Haniljn
Kampeska Codington
Madison Lake
Mitchell Davidson
Norden Hamlin
East Oakwood Brookings
West Oakwood Brookings
Pactola Pennington
Pickerel Day
Poinsett Brookings, Lake
Red Iron South Marshall
Richmond Brown
Roy Marshall
Sand Brown
Sheridan Pennington
Stockdale Custer
East Vermillion McCook
Wall Minnehaha
Waubay Day
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-
‘-p.
• • . •.. ...
.. . ..• .• . ...
• er .• .• . .•• ..•
•Th
Map Location
•1
/
.. .A
N.
4500—
COTTONWOOD LAKE
® Tributary Sampling Site
X Lake Sampling Site
1 6 8 ipKm.
23
Scale
4 Mi.
COTTON WWO
LAKE
44.45—
9900’
9845
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COT TOJ\ WOOD LAKI.
STORET NO. 4609
I. INTRODUCTION
Due to lack of flows, only a few tributary samples were collected,
and no outlet samples were taken. Therefore, this report relates only
to the lake sampling data. However, the few sampling data obtained are
included in Appendix D for the record.
II. CONCLUSIONS
A. Trophic Condition:
Survey data indicate that Cottonwood Lake is eutrophic. It
ranked twenty-ninth in overall trophic quality when the 31 South
Dakota lakes sampled in 1974 were compared using a combination of
six water quality parameters*. Twenty-nine of the lakes had less
median total phosphorus and dissolved orthophosphorus, 26 had less
median inorganic nitrogen, 24 had less mean chlorophyll a, and 29
had greater mean Secchi disc transparency.
Survey limnologists noted that the lake was quite turbid in
April and July and observed surface concentrations of algae in
September.
B. Rate—Limiting Nutrient:
The algal assay results indicate the lake was nitrogen
limited at the time the sample was collected (09/18/74). The lake
data indicate nitrogen limitation at all sampling stations and
times.
* See Appendix A.
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2
III. LAKE AND DRAINAGE BASIN CHARACTERISTICS
A. Lake Morphometrytt:
1. Surface area: 6.68 kilometers 2 .
2. Mean depth: 2.0 meters.
3. Maximum depth: 2.7 meters.
4. Volume: 13.360 x 106 m 3 .
B. Precipitation*:
1. Year of sampling: 34.1 centimeters.
2. Mean annual: 47.8 centimeters.
t Table of metric conversions--Appendix B.
ft Murphey, 1974.
* See Working Paper No. 175, “...Survey Methods, 1973—1976”.
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3
IV. LAKE WATER QUALITY SUMMARY
Cottonwood Lake was sampled three times during the open—water season
of 1974 by means of a pontoon-equipped Huey helicopter. Each time,
samples for physical and chemical parameters were collected from
one or more depths at two stations on the lake (see map, page v).
During each visit, a single depth—integrated (near bottom to surface)
sample was composited from the stations for phytoplankton identification
and enumeration; and during the last 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 depth sampled at each station was
0.9 meters.
The sampling results are presented in full in Appendix C and are
summarized in the following table.
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1St SAMPLING ( 6/24/74)
2 SITES
A. jUM ARY OF r-IYSICAL AND C E 1CAL CrlAPAC1Ep ISTICS CU1TONw0O LAKE
STu- E1 CuU . -.639
2ND SAMPLING ( 7/11/74)
2 SITES
3k0 SAMPLING C 9/18/76)
2 SITES
PARAMETER
RANGE
MEAN
MEDIAN
MANGc.
MEAN
MEDIAN
WANGE
MEAN
MEDIAN
TEMP (C)
10.3
— 10.3
10.3
10.3
24.4
— 2 5.b
25.1
25.1
17.4
— 17.6
• 17.5
17.5
0155 OXY (MG/L)
9.8
— 9.8
9.8
9.8
6.4
— 7.0
6.8
6.9
9.2
— 11.8
10.6
10.7
CNDCTVY (MCROMO)
10’ 3.
— 1085.
1064.
1084.
1739.
— 18 5.
1776.
1760.
1754.
— 1781.
17b .
1768.
Pi-4 (STAND UNITS)
8.b
— 8.6
8.
8.
4.9
— 9.1
9.0
8.9
8.6
— 8.7
8.7
8.7
TOT AL (MG/L)
358.
— 378.
368.
368.
394.
— 520.
487.
518.
600.
— 675.
654.
670.
TOT P (MC,/L)
0.776
— 0.864
0.820
0.820
0.652
— 0.814
0.729
0.726
0.452
— 0.612
0.522
0.511
OkTHO P (MG/L)
0.414
— 0.420
0. 17
e.417
0.436
— 0.498
0.469
0.472
0.277
— 0.301
0.290
0.291
N02 .N03 (MG/L)
0.170
— 0.180
0.175
0.175
0.130
— 0.230
0.195
0.210
0.040
— 0.040
0.040
0.040
AMMONIA (MG/L)
0.120
— 0.120
O.12C
0.120
0.110
— 0.160
0.145
0.155
0.060
— 0.070
0.062
0,060
XJEL N (MG/L)
1.500
— 2.000
1.750
1.750
2.500
— 3.200
2.725
2.600
2.600
— 4.500
3.550
3.550
INOP& N (MG/L)
0.290
— 0.300
0.295
0.295
0.240
— 0.390
0.340
0.365
0.100
— 0.110
0.102
0.100
TOTAL N (MG/U
1.e 70
— 2.180
1.925
1.92S
2.710
— 3.333
2.920
2.820
2.640
— 4.540
3.590
3.593
CHLRPYL A (lJr,/L)
19.4
— 20.4
19.9
19.9
22.1
— 68.6
45.3
45.3
267.6
— 74.0
270.8
270.8
SECCHI (METEPS)
0.1
— 0.1
0.1
0.1
0.2
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5
B. Biological characteristics:
1. Phytoplankton —
Sanipling Dominant Algal Units
Date Genera per ml
04/24/74 1. Stephanodiscus 721
2. Dactylococcopsis ap. 721
3. ftitzschia !2.• 320
4. Synedra p. 120
5. Cryp tomonas ap.• 120
Other genera 321
Total 2,323
07/11/74 1. A phanizomenon . .E• 2,574
2. Chroococcus 814
3. Anabaena . 263
4. Oocystis p. 79
5. Schroederia aii• 79
Other genera 78
Total 3,887
09/18/74 1. Aphanizomenon p. 13,002
2. Anabaena p. 875
3. Chroococcus p. 318
4. Chroomona . . 159
5. Oocystis 80
Other genera 39
Total 14,473
2. Chlorophyll a -
Sampling Station Chlorophyll a
Date Number ( pg/i )
04/24/74 1 20.4
2 19.4
07/11/74 1 22.1
2 68.6
09/18/74 1 267.6
2 274.0
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6
C. Limiting Nutrient Study:
1. Autociaved, filtered, and nutrient spiked -
Ortho P Inorganic N
___________ Conc. (mg/i) Conc. (mg/i ) _____________
0.100 0.211
0.150 0.211
0.150 1.211
0.100 1.211
2. Discussion -
The control yield of the assay alga, Selenastrum capri-
cornutum , indicates that the potential primary productivity
of Cottonwood Lake was high at the time the sample was taken
(09/18/74). Also, the significant increase in yield with the
addition of nitrogen alone indicates the lake was limited by
nitrogen at that time. Note that the addition of phosphorus
alone did not result in a significantly greater yield than
that of the control.
The lake data also indicate nitrogen limitation; i.e.,
the mean inorganic nitrogen/orthophosphorus ratios were
1/1 or less at all sampling times.
Spike (mg/i )
Control
0.050 P
0.050 P + 1.0 N
1.0 N
Maximum yield
( mg/i—dry wt. )
8.4
9.3
18.7
14.6
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7
V. LITERATURE REVIEWED
Murphey, DuanE’ G., 1974. Personal communication (lake morphometry).
SD Dept. of Env. Prot., Pierre.
Petrie, Lester R., and L. Rodney Larson, 1966 (?). Quality of water
in selected lakes of eastern South Dakota. Rept. of mv. #i,
SD Water Res. Comm., Pierre.
Schmidt, Artwin E., 1967. Limnology of selected South Dakota lakes.
MS thesis, SD St. U., Brookings.
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8
VI. APPENDICES
APPENDIX A
LAKE RANKINGS
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LAKE
DATA TO BE USED IN RANKIWGS
LAKE
CODE
LAKE NA’ E
‘qEDIAN
TOTAL P
MEOTAN
LI O G N
500—
MEAN SEC
MEAN
CHLOPA
15—
MIN DO
MEDIAN
DISS O THO
I
4631
LAKE ALBE. T
0.321
0.170
489.111
106.289
9.200
0.O 9
45C2
ALVIN LAKE
0.057
0.973
442.833
4.700
.40O
0.017
4603
ANGOSTUPA RESERVOIR
0.019
0.160
423.333
3.717
13.000
0.005
4604
BPANT LAKE
0.194
0.130
432.833
34.150
11.800
0.113
4605
LAKE 8YRON
0.443
0.370
488.333
149.350
9.003
0.146
‘606
CLEAR LArE
0.027
u. 075
430.167
11.983
8.800
0.009
4607
CLEAR LAKE
1.400
0.270
495.333
691.000
7.000
0.468
4608
COCHRAP .E LAKE
0.037
0.150
446.000
15.683
15.000
0.008
4609
COTTONWOOD LAKE
0.685
0.265
490.333
112.017
8.600
0.417
4610
DEERFIELD RESERVOIR
0.033
0.080
303.333
3.650
15.000
0.022
‘611
ENEMY SWIM LAKE
-
0.037
0.085
442.600
14.200
8.200
0.013
‘612
LAKE HERMAN
0.340
0.155
485.000
58.733
8.600
0.174
4613
ST JOHN LAKE
0.34
0.080
489.400
120.880
9.800
0.025
4614
4615
LAKE KAMPESKA
MADISON LAKE
0.220
0.250
0.105
0.090
468.889
445.555
20.567
22.578
8.200
14.000
0.128
0.107
4616
LAKE MITChELL
0.099
0.085
465.833
14.883
13.800
0.015
4617
LAKE NflQD [ N
0.256
0.165
488.667
46.800
10.000
0.050
4613
0AK OOI) LAKE EAST
0.146
0.175
487.000
113.600
10.000
0.009
4619
OAK OOD LAKE WEST
0.181
0.135
485.833
159.667
9.600
0.021
4620
PACTOLA RESERVOIR
0.011
0.070
248.444
1.478
11.000
0.OOb
4621
4622
PICKEI [ L LAKE
LAKE POINSEIT
0.049
0.115
0.095
0.315
439.833
468.444
15.833
40.211
9.600
10.000
0.009
0.023
4623
LAKE R O IRON SOUTM
0.042
0.110
430.333
6.883
7.600
0.010
‘62’
RICHMO JD LAKE
0.187
0.150
410.000
18.467
10.000
0.1’4
4625
POY LA .E
0.034
0.070
431.000
13.333
11.000
0.010
4626
SAND LAKE
0.489
0.110
471.800
65.790
12.800
0.288
‘527
SHERICAN LAKE
0.053
0.105
394.000
15.433
15.000
0.016
4528
STOCKACE LAKE
0.233
0.150
432.000
25.400
15.000
0.109
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LA’c DATA TO BC USED IN RAN?UNGS
LAKE NAME
LAPcE VE MILLIO J
WALL LAKE
WAUdAY LAKE NORT 1
LA E
CCOE
462g
4 33
4631
MEDIAN
MEDIAN
500—
MEAN
15—
MEDIAN
TOTAL P
INORI, N
MEAN SEC
CHLORA
MIN DO
DISS O T-iO P
0.211
0.100
472.833
100.800
9.200
0.092
0.194
0.160
441.667
55.267
7.400
0.0 T h
0.093
0.145
469.555
127.033
11.400
0.023
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PE CENT 0F LAKES WIT-i HIGHER VALUES (NUMBER OF LAKES .JITH HIG lEF VALUES)
LAKE MEDIAN MEDIAN 500— MEAN 15— MEDIAN INUE*
CODE LAKE NAME TOTAL P INO G N MEAN SEC CMLO A Mp DO DISS Oc THO P NO
4531 LAKE ALBEPT 20 C 6) 20 C 6) 10 C 3) 23 C 7) 68 C 20) 50 C 18) 201
‘602 ALVIN LAKE 57 ( 20) 0 C 0) 57 ( 17) 90 27) 63 C 19) 63 C 1’ ) 3 .O
4603 ANGOSTIjPA RESERVOIR 97 C 29) 30 C 9) 87 ( 26) 93 C 28) 20 C 6) 100 30) 427
4604 8RANT LAKE 40 C 12) 53 C 16) 70 C 21) 47 ( 14) 27 C 8) 23 C 7) 60
4605 LAKE B POu 10 C 3) 3 C 1) 17 C 5) 7 C 2) 73 C 22) 13 C 4) 123
4606 CLEAR LAKE 93 C 28) 93 C 28) 83 C 25) 83 ( 25) 77 C 23) 90 C 27) S1
4607 CLEAR LAKE 0 C 0) 10 C 3) 0 C 0) 0 ( 0) 100 C 30) 0 C 0) 110
‘538 COC RA E LAKE 83 C 25) 40 C 11) 50 ( 15) 67 1 20) 5 C 0) 93 C 28) 338
4609 COTTON .OOD LAKE 3 1 1) 13 C 4) 3 C 1) 20 C 6) 82 ( 24) 3 C 1) 124
4610 DEERFIELD RESERVOIR 90 1 27) 88 ( 26) 97 C 29) 97 C 29) 5 C 0) 53 C 16) 430
4611 ENEMY SWIM LAKE 80 1 24) 82 ( 24) 60 C id) 77 ( 23) 88 ( 26) 73 1 22) 460
4512 LAKE HERMAN 17 ( 5) 33 C 10) 27 ( 8) 33 C 10) 82 ( 24) 10 C 3) 202
4613 ST JOHN LAKE 13 C 4) 88 C 26) 7 ( 2) 13 C 4) 53 C 16) 43 C 13) 217
4614 LAKE KAMPESKA 33 C 10) 85 ( 19) 40 C 12) 57 C 17) 88 ( 26) 20 C 6) 303
4615 MADISON LAKE 27 C 8) 77 C 23) 53 C 16) 53 C 16) 13 C 4) 30 C 9) 253
4616 LAKE MITCHELL 60 ( 18) 82 C 24) 47 C 14) 73 C 22) 17 C 5) 70 C 21) 349
4617 LAKE NOPOEN 23 ( 7) 23 ( 7) 13 C 4) 40 C 12) 45 C 12) 40 C 1?? 18 ’.
4618 OAKWOOI) LAKE EAST 53 1 16) 17 C 5) 20 C 6) 17 ( 5) 45 C 12) 85 C 25) 237
4619 OAKW000 LAKE WEST 50 I 15) 50 C 15) 23 1 7) 3 C 1) 58 C 17) 57 C 17) 241
4620 PACTOLA RESERVOIR 100 C 30) 98 C 29) 100 C 30) 100 ( 30) 35 C 10) 97 C 29) 530
4621 PICKEREL LAKE 73 1 2?) 73 C 22) 67 ( 20) 63 C 19) 58 C 17) 85 I 25) ‘.19
4622 LAKE POINSETT 57 ( 17) 7 C 2) 43 C 13) 43 I 13) 45 1 12) 47 C 14) 242
4623 LAKE RED IRON SOUTH 77 C 23) 58 C 17) 80 ( 24) 87 1 2s) 93 C 28) 78 ( 23) 473
‘52’ RICHMOND LAKE 47 C 14) 40 C 11) 90 C 27) 60 1 18) 45 1 12) 17 C 5) 299
4625 ROY LAKE 87 1 26) 98 ( 2 ) 77 C 23) 80 1 24) 35 1 10) 78 C 23) 655
‘.626 SAND LAKE 7 C 2) 58 ( 17) 33 C 10) 30 C 9) 23 C 7) 7 1 2) 158
4627 S ER1DAN LAKE 70 1 21) 85 C 19) 93 C 28) 70 C 21) 5 1 0) 67 ( 20) 370
4628 STOCKADE LAKE
30 1 9) 60 C 11) 73 C 22) 50 C 15)
5 1 0) 27 4 8) 225
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PERCENT OF LAKES 11TH H1G!iER VALUES (NUMaEP OF LAKES wITH HIGHER VALUES}
LAKE
MEUIs N
MEDIAN
5 0 0
I IIN
0155
ORTrIO P
Nt)
CODE
LAKE
NAME
TOTAL
P
1 iO G
N
MEAN SEC
CriLO A
6629
LAKE
VERMILLION
37 C
11)
70 (
21)
30 C
9)
27 C
8)
68 C 20)
33
C 10)
265
4630
WALL
LAKE
43 C
13)
27 C
8)
63 C
19)
37 (
11)
97 ( 29)
37
( 11)
304
4631
WAUBAY LAr E NORTH
63 C
19)
47 C
14)
37 ( 11)
10 C
3)
30
( 9)
50
C 15)
237
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LAKES RANKED BY INDEX NOS.
RANK LAKE CODE LAKE NAME INDEX NO
1 4620 PACTOLA RESERVOIR 530
2 4606 CLEAR LAKE 519
3 4623 LAKE RED IRON SOuTH 473
4 4611 ENEMY SWIM LAKE 460
5 4625 ROY LAKE 455
6 4610 DEERFIELD RESERVOIR 430
7 4603 ANGOSTURA RESERVOIR 427
8 4621 PICKEREL LAKE 419
9 4627 SHERIDAN LAKE 370
10 4616 LAKE MITCHELL 349
11 4802 ALVIN LAKE 340
12 4608 COCHRANE LAKE 338
13 4530 WALL LAKE 304
14 4614 LAKE KAMPESKA 303
15 4624 RICHMOND LAKE 299
16 4629 LAKE VERHILLION 265
17 4604 BRANT LAKE 260
18 4815 MADISON LAKE 253
19 4622 LAKE POINSETT 242
20 4819 OAKW000 LAKE WEST 241
21 4631 WAUBAY LAKE NORTH 237
22 4618 OAK OO() LAKE EAST 237
23 4828 STOCKADE LAKE 225
24 4613 ST JOHN LAKE 217
25 4812 LAKE r EPMAN 202
26 4601 LAKE ALBERT 201
27 4617 LAKE NOROEN 1e4
28 4626 SAN LAKE 158
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LAKES RAN cEO BY INDEX NOS.
RA ( LAKE CODE LA \E NAME INDEX NO
29 4 O9 COTTUNWOOt) LAKE
30 4605 LAKE bYRON 123
31 4607 CLEAR LAKE 110
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APPENDIX B
CONVERSION FACTORS
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CONVERSION FA(;TORS
Hectares x 2.471 = acres
Kilometers x 0.6214 miles
Meters x 3.281 feet
Cubic meters x 8.107 x lO = 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 = lbs/square mile
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APPENDIX C
PHYSICAL and CHEMICAL DATA
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STORET PETPIEVAL DATE 76/05/03
460901
44 48 05.0 098 39 5.0 3
COTTON 00D LAr(E
46115 SOUTH DAKOTA
090691
I 1EPALES
0005 FEET
2111202
DEPTH CLASS 00
74/04/24 13 00 0000
74/07/11 10 25 0000
10 25 0001
10 25 0003
74/09/18 13 25 0000
13 25 0002
13 25 0003
00665 32217
PHOS—TOT C LRPHYL
A
MG/L P UG/L
00031
INCOT LI
REMNING
PERCENT
00010
WATER
IMP
CENT
10.3
24.4
24.4
17.4
17.’.
FROM
OF
TO
DAY FEET
74/04/24
13 00 0000
74/07/11
10 25 0000
10 25 0003
74/09/18
13 25 0000
13 25 0002
DATE
TIME DEPTH
FROM
OF
TO
DAY FEET
00300 00077
DO TR . NSP
SECCt-i I
MG/L INCHES
9.8
7.0
7.0
10.0
9.2
CNOUCTVY
PH
T
00671
FIELD
CACO3
NH3—N
TOTAL
TOT KJEL
NO2 .NO3
P -iOS-DIS
MICROMMO
SO
MG/L
MG/L
N
MG/L
N-TOIAL
MG/L
ORTHO
MG/L P
S
1085
8.60
12
1745
9.10
520
0.120
2.000
0.180
0.414
1739
9.00
520
0.160
2.600
0.230
0.498
18
1754
8.65
0.150
2.500
0.210
0.492
1754
0.060
2.900
0.040
0.298
0.864
0.718
0.652
0.452
0.453
20.4
22.1
267.6
1.0
1.0
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STORET RETRIEIAL DATC 76/05/03
460902
44 46 59.0 098 41 13.0
COTT0r *OOD LAr E
46115 SOUTH DA OTA
I 1EPALES
0006 FEET
2111202
DEPTH CLASS 00
74/04/24 13 IS 0000
74/07/11 10 00 0000
10 00 0001
10 00 0003
74/09/18 13 40 0000
I) 40 0002
00665 32217
PHOS-TOT CHLRPi-4YL
A
MG/L P UG/L
0.814
0.612
0.570
00031
INCDT LT
EMNING
PERCENT
3
DATE
TIME DEPTH
FROM
OF
TO
DAY FEET
74/04/2’
13 15 0000
74/07/11
10 00 0000
10 00 0003
74/09/18
13 40 0000
13 40 0002
DATE
TIME DEPTM
FROM
OF
TO
DAY FEET
090691
HATER
DO
TRANSP
CNDuCTVY
PH
1
ALrS
TEMP
SECCHI
FIELD
CACO3
TOTAL
TOT icJEL
N02&r 03
PHOS-UIS
CENT
MG/L
INCHES
MICROMMO
SU
Mu/L
HG/L
N
MG/L
N-FOTAL
MG/L
Oi TrlO
MG/L P
10.3
9.8
S
1083
8.60
358
0.120
25.8
6.8
6
1845
8.90
515
0.110
1.500
0.170
0.420
25.8
6.4
1775
8.90
394
0.160
0.130
0.452
17.6
11.4
12
1781
8.66
670
0.060
2.600
0.210
0.436
17.6
11.8
1781
0.284
0.776
0 • 734
19.4
68.6
1.0
274.0
1.0
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APPENDIX D
TRIBUTARY DATA
-------
STORET RETRIEVAL SATE 76/05/04
460 1
44 45 52.0 09d 42 13.0 4
MEDICINE CREEK
46 7.5 REDFIELD S
1/COTTONu000 LS KE 090691
RDG ON r4 Y 26 9.2 MI S OF ZELL
I IEPALES 2111204
0000 FEET DEPTH CLASS 00
00630 00625 00610 00671 00665
DATE TIME DEPTH N02&N03 TOT KJEL Nr13—N PMOS—DIS ?MOS—TOT
FROM OF N-TOTAL N TOTAL ORIHO
TO DAY FEET MG/L ‘4G/L HG/L MG/L P MG/L P
74/10/12 13 52 0.016 2.500 0.035 0.025 0.195
74/11/03 14 45 0.008 1.100 0.090 0.090 0.160
75/05/06 19 00 0.015 3.150 0.105 0.260 0.420
7S/06/0 . 16 40 0.015 1.900 0.045 0.200 C.3’.o
75/07/13 08 20 0.035 2.800 0.060 0.480 0.840
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TRIBuTARY FLOM INFOR lATIO j FOR SOUTH DAKOTA 05/03/76
LA’cE COOE 4609 COTTONWOOD
TOTAL D AIf AGE AREA OF LAKE(SQ XMl 582.7
SUB—DRAINAGE NO HALIZEO FLO S(CHS)
TRIBUTARY APEA(SO KM) JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC MEAN
‘.6 09A1 582.7 0.003 0.045 0.736 0.736 0.212 0.212 O. 12 0.0,7 0.011 0.011 0.006 0.003 0.188
4609H1 543.9 0.003 0.045 0.7,D8 0.680 0.207 0.20” 0.201 0.031 0.008 0.008 0.003 0.003 0.176
‘.609Z 1 38.8 0.0 0.0 0.028 0.028 0.028 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.007
SUMMARY
TOTAL DRAINAGE AREA OF LAKE = 582.7 TOTAL FLOW IN = 2.19
SUM OF SUB—DRAIFIAGE AREAS — 582.7 TOTAL FLOW OUT = 2.25
MEAN MONTHLY FLOWS AND UAILY FLOWS(CMS)
TRIBUTARY MONTH YEAR MEAN FLOW DAY FLOW DAY FLOW DAY FLOW
46 09A1 10 74 0.0 12 0.0
11 74 0.0 3 0.0
12 74 0.0 8 0.0
1 75 0.0 17 0.0
2 75 0.0 2 0.0
3 75 0.0 1 0.0
4 75 0.0 6 0.0
5 75 0.0 6 0.0 16 0.0
6 75 0.0 4 0.0
7 75 0.0 10 0.0
8 75 0.0 16 0.0
9 75 0.0 6 0.0
4609B1 10 74 0.000 12 0.0
11 74 0.001 3 0.000
12 7 ’. 0.0 8 0.0
1 75 0.0 17 0.0
2 75 0.0 2 0.0
3 75 0.0 1 0.0
4 75 0.227 6 0.0
5 75 0.028 6 0.028
6 75 0.113 4 0.008
7 75 0.006 13 0.001
8 75 0.000 16 0.0
9 75 0.0 9 0.0
4609ZZ 10 7’. 0.0
11 74 0.0
12 74 0.0
1 75 0.0
2 75 0.0
3 75 0.0
4 75 0.0
5 75 0.003
6 75 0.0
7 75 0.0
8 75 0.0
9 75 0.0
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