U.S. ENVIRONMENTAL PROTECTION AGENCY
NATIONAL EUTROPHICATION SURVEY
WORKING PAPER SERIES
REPORT
ON
NORTH WURAY LAKE
DAY COUNIY
SOUTH DAKOTA
EPA REGION VIII
WORKING PAPER No, 628
CORVALLIS ENVIRONMENTAL RESEARCH LABORATORY - CORVALLIS, OREGON
and
ENVIRONMENTAL MONITORING & SUPPORT LABORATORY - LAS VEGAS, NEVADA
>G.P.O. 699-440
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REPORT
ON
NORTH WNJBAY LAKE
DAY COUNTY
SOUTH DAKOTA
EPA REGION VIII
WORKING PAPER No, G28
WITH THE COOPERATION OF THE
SOUTH DAKOTA DEPARTMENT OF ENVIRONMENTAL PROTECTION
AND THE
SOUTH DAKOTA NATIONAL GUARD
DECEMBER/ 1976
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1
CONTENTS
Page
Foreward ii
List of South Dakota Study Lakes iv
Lake and Drainage Area Map v
Sections
:. Conclusions 1
II. Lake and Drainage Basin Characteristics 1
III. Lake Water Quality Sumary 3
IV. Nutrient Loadings 4
V. Literature Reviewed 8
VI. Appendices 9
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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.
RNALYTIC 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 [ 3l4(a,b)],
and water quality monitoring [ lO6 and §305(b)] activities mandated
by the Federal Water Pollution Control Act Amendments of 1972.
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fl1
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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lv
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 Hamlin
Kampeska Codington
Madison Lake
Mitchell Davidson
Norden Hami in
East Oakwood Brookings
West Oakwood Brookings
Pactol a Penni ngton
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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V
I
Grenville .
Map Location
452!
4 2O—
WAUBAY
I
/ KE
0
X Lake Sampling Site
0
Km.
4
2
Scale
Mi.
07’2Y
0730’
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NORTH WAUBAY LAKE
STORET NO. 4631
I. INTRODUCTION
North Waubay Lake was included in the National Eutrophication
Survey as a water body of interest to the South Dakota Departments
of Environmental Protection and Game, Fish and Parks. Tributaries
and nutrient sources were not sampled, and this report relates only
to lake sampling data.
North Waubay Lake is located in an area of partly wooded grass-
lands utilized mostly for pasture. The lake is adjacent to the
Waubay National Wildlife Refuge and provides waterfowl habitat.
Recurring winterkill prevents establishment of a significant sport
fishery.
II. CONCLLISIONS
A. Trophic Condition:
Survey data indicate that North Waubay Lake is eutrophic.
It ranked twenty-first in overall trophic quality when the
31 South Dakota lakes sampled in 1974 were compared using
a combination of six paranIeters*. Eleven of the lakes had
less median total phosphorus, 15 had less median dissolved
phosphorus, 16 had less median inorganic nitrogen, 27 had
less mean chlorophyll a, and 19 had greater mean Secchi disc
transparency.
* See Appendix P .
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2
Survey limnologists noted that the general appearance of
the lake was poor. Subuergent and emergent vegetation occupied
about 40% of the littoral area, and algae blooms were in
progress during the July and September sampling visits. Marked
depression of dissolved oxygen (about 45% of saturation)
occurred at sampling station 1 in July.
B. Rate-Limiting Nutrient:
A significant loss of nutrients in the assay sample
occurred between the time of collection and the beginning of
the assay, and the results are not indicative of conditions
in the lake when the sample was taken (09/19/74).
The lake data indicate nitrogen limitation in April, July,
and September.
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3
III. LAKE AND DRAINAGE BASIC CHARACTERISTICS
A. Lake Morphometrytt:
1. Surface area: 14.16 kilometers 2 .
2. Mean depth: 2.7 meters.
3. Maximum depth: 4.6 meters.
4. Volume: 38.232 x 106 m 3 .
B. Precipitation*:
1. Year of sampling: 31.3 centimeters.
2. Mean annual: 51.1 centimeters.
t Table of metric equivalents--Appendix B.
tt Murphy, 1974.
* See Working Paper No. 175 “...Survey Methods, 1973-1976”.
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4
IV. LAKE WATER QUALITY SUMMARY
North Waubay 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
three stations on the lake and from two or more depths at each station
(see map, page v). During each visit, a single depth—integrated (near
bottom to surface) sample was composited from the stations for phyto-
plankton identification and enumeration; and during the September
visit, a single 18.9-liter depth—integrated sample was composited for
algal assays. Also each time, a depth—integrated sample was collected
from each of the stations for chlorophyll a analysis. The maximum
depths sampled were 1.8 meters at station 1 and 1.5 meters at stations
2 and 3.
The sampling results are presented in full in Appendix C and
are surnarized in the following table.
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A. SUMMARY OF PMYSICAL AND Cr,EMICAL CrIARACTEPISTICS FOII AUBAY
STO ET COJE 4531
1ST SAMPLING ( 4/25/74) 2ND SAMPLING ( 7/11/74)
3 SITES
I ANGE MEAN MEDIAN
— 10.6 9.9 10.1
— 10.4 9. 9.b
— 4310. 3294. 3451.
3 SITES
3Ru SAMPLING C 9/19/74)
3 SITES
PAR AME TER
TEMP (C)
DISS OXY (MG/L)
CNDCTVY (MCROP4O)
PH (STAND UNITS)
TOT ALK (HG/L)
TOT P (MG/L)
ORTMO P (MG/L)
N02.Ni)3 (MG/LI
AMMONIA (MG/L)
KJEL N (MG/L)
INOP & N (MG/I)
TOTAL N (MG/I)
CHLRPYL A (U(/L)
SECCr4I (METERS)
8.2
8.6
2096.
£ 2d.
0.053
0.010
0,0 70
0.060
2.700
0.140
2.7 70
1.4
0.8
— 374.
— 0.156
— 0.045
— 0.120
— 0.230
— 3.303
— 0.330
- 3.400
— 30.1
— 1.7
24.7
3.6
3454.
8.9
364,
0.101
0.029
0.070
0.0 0
3 • 400
0. 1 0
3 • 4 O
67.8
0.3
MANGE
— 25.2
- 7.6
— 7175.
— 9.2
— 570.
- 0.363
— 0.071
— 0.210
— 0.170
—12.400
— 0.380
—12.500
- 900.4
- 0.6
LAKE NOPT i
15.1
8.4
3003.
8.8
580.
0.069
0.014
0.020
0.040
3.300
0.060
3 • 320
6.2
0.6
277.
0.096
0.019
0.088
0.143
2 • 983
0,232
3.072
11.8
1.2
MEAN
24,9
6.0
5965.
9.0
445.
0.187
0.041
0.115
0.090
6.317
0.205
6.432
348 • 8
0 .S
308.
0.086
0.01o
0.080
0.135
2,900
0.230
3.000
3.9
1.0
MEDIAN
24,8
6.7
7134.
9.0
418.
0.121
0.035
0.095
0.075
3.950
0.180
4.030
78.3
0.6
RANGE
— 15.8
- 9.2
- 5757.
8.8
— 950.
— 0.158
— 0.048
- 0.030
— 0.110
— 4.300
— 0.140
— 4.330
— 42.1
— u.S
ME AN
15.4
8.9
4781.
8.8
790.
0.094
0.024
0.065
3.800
0.090
3.825
2O. ,
0.7
MEDIAN
15.2
9.0
558 .
8.8
850.
0.084
0.022
0.0 25
0.045
3.700
0.0 70
3.725
13.1
0.6
01
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6
B. Biological characteristics:
1. Phytoplankton
Sampling Dominant Algal Units
Date Genera per ml
04/25/74 1. Suriella 291
2. C 1otella !2• 166
3. Chroococcus p. 125
4. Microcystis 2• 83
5. Amphiprora 83
Other genera 416
Total 1,164
07/11/74 1. Aphanizomenon . .a• 11,360
2. Phormidium 3,877
3. Chaetoceros 2,288
4. Chro coccus p. 1,435
5. Chroomonas 194
Other genera 736
Total 19,890
09/19/74 1. G1oeoçy tis (?) . .2• 4,061
2. Aphanizomenon !P. 1 ,684
3. 1 bdu1 aria . ia• 74
4. Chaetoceros p. 50
5. Nitzschia 25
Other genera 99
Total 5,993
2. Chlorophyll a -
Sampling Station Chlorophyll a
Date Number ( pg/i )
04/25/74 1 30.1
2 3.9
3 1.4
07/11/74 1 900.4
2 67.8
3 78.3
09/19/74 1 42.1
2 13.1
3 6.2
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7
C. Limiting Nutrient Study:
A significant loss of nutrients occurred in the assay
sample between the time of collection and the beginning of
the assay, and the results are not indicative of conditions
in the lake at the time the sample was taken (09/19/74).
The lake data indicate nitrogen limitation in April,
July, and September (the mean inorganic nitrogen to ortho-
phosphorus ratios were 12/1, 5/1, and 4/1, respectively).
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8
V. LITERATURE REVIEWED
Murphy, Duane G, 1974. Personal communication (lake morphometry)
SD Dept. of Env. Prot., Pierre.
Petri, Lester R, and L. Rodney Larson, 1966 (?). Quality of
water in selected lakes of eastern South Dakota. Rept. of
mv. #1, SD Water Res. Comm., Pierre.
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9
VI. APPENDICES
APPENDIX A
LAKE RANKINGS
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LAICE DATA TO BE USED IN RANKINGS
LAKE MED iAN MEDIAN 500- MEAN 15— MEDIAN
CODE LAKE NAME TOTAL P It i0rtG N MEAN SEC CHLORA 11114 00 0155 0?tnO P
4601 LAKE ALBEPIT 0.321 0.110 489.111 106.289 9.200 0.01;
4602 ALVIN LAKE O.0b7 0.973 442,833 4 ,700 .4OO 0.0 17
4603 ANGOSTURA RESERVOIR 0.019 0.160 423 .333 3.111 13.000 0.005
4604 BRANT LAKE 0.194 0. 130 432.833 34.150 11.800 0.113
4605 LAKE BYRON 0.443 0.310 488.333 149.350 9.003 0.146
4606 CLEAR LAKE 0.021 0.075 430.167 11.983 8.600 0.009
4607 CLEAR LAKE 1.400 0.270 495.333 691.000 7.000 0.468
4608 COCHRANE LAKE 0.031 0.150 446.000 15.683 15.000 0.008
4609 COTTONWOOD LAKE 0.685 0.265 490.333 1 12.017 8.600 0.417
4610 OEERFIELO RESERVOIR 0.033 0.080 303.333 3.650 15.000 0.022
4611 ENEMY SWIM LAKE 0.031 0.085 442.600 14.200 8.200 0.013
4612 LAKE HERMAN 0.3 40 0.155 485.000 58. 133 8 .600 0.114
4613 ST JOHN LAKE 0.349 0.080 489.400 120.880 9.800 0-.025
4614 LAKE KAMPESKA 0.220 0.105 468.889 20.567 8.200 0.128
4615 MADISON LAKE 0.253 0.090 445.555 22.518 14.000 0.107
4616 LAKE MiTChELL 0.099 0.065 465.833 14.883 13.800 0.015
4617 LAKE WaRDEN 0.256 0.165 488.661 46.800 10.000 0.050
4618 OAKWOOD LAKE EAST 0.146 0.175 487.000 113.600 10.000 0.009
4619 OAKW000 LAKE WEST 0.181 0.135 465.833 159.667 9.aOo 0.021
4620 PACTOLA RESERVOIR 0.011 0 .070 248.444 1.478 11.000 0.006
4621 PICKEREL LAKE 0.049 0.095 439.833 15.633 9.600 0.009
4622 LAKE POINSETT 0.115 0.315 468.444 40.211 10.000 0.023
4623 LAKE REO IRON SOUTH 0.042 0.130 430.333 6.883 7.600 0.010
4624 RICHMOND LAKE 0.187 0.150 410.000 18.461 10.000 0.144
4625 ROY LAKE 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
4627 SHERIDAN LAKE 0.053 0.105 394.000 15.433 15.000 0.016
4628 STOCKAOE LAKE 0.233 0.150 432.000 25.400 15.000 0.109
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LAKE DATA TO BE USED IN RANKINGS
LAKE MEDIAN MEDIAN 500- MEAN iS- MEDIAN
CODE LAKE NAME TOTAL P IIiOk (, N MEAN SEC C’1LO A MIN DO DISS O Tr.O
4629 LAKE VERMILLION 0.21 1 0.100 472.833 100.800 9.200 0.092
4630 WALL LAKE 0.194 0.160 441.667 55.267 7.400 0.076
4631 WAUBAY LAKE NORTH 0.09d 0.145 469.555 127.033 11.400 0.023
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PERCEPIT 0F LAKES WITrtH IGpiER VALUES (NUMaER OF LAKES WITH HIGHEP VALUES)
LAKE MEDIAN MEDIAN 500— MEAN MEDIAN INDEX
CODE LAKE NAME TOTAL P INORG N MEAN SEC CHLORA MIN DO DISS ORTHO P NO
4601 LAKE ALBERT 20 C 6) 20 C 6) 10 C 3) 23 C 7) 68 C 20) 60 C 18) 201
4602 ALVIN LAKE 67 C 20) 0 C 0) 57 C 17) 90 C 27) 63 C 19) 63 C 19) 340
4603 ANGOSTURA RESERVOIR 97 C 29) 30 C 9) 87 C 26) 93 C 28) 20 ( 6) 100 1 30) 427
4604 BRANT LAKE 40 C 12) 53 C 16) 70 C 21) 47 C 14) 27 C 8) 23 C 7) 260
4605 LAKE BYRON 10 ( 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 C 25) 77 C 23) 90 C 27) 519
4607 CLEAI LAKE 0 C 0) 10 C 3) 0 C 0) 0 C 0) 100 C 30) 0 C 0) 110
4608 COCHRANE LAKE 83 C 25) 40 C 11) 50 C 15) 67 C 20) 5 C 0) 93 C 28) 338
4609 COTTONwOOD LAKE 3 C 1) 13 C 4) 3 C 1) 20 C 6) 82 C 24) 3 ( 1) 124
4610 DEERFIELD RESERVOIR 90 C 27) 88 C 26) 97 C 29) 97 C 29) 5 C 0) 53 1 16) 430
4611 ENEMY SWIM LAKE 80 C 24) 82 C 24) 60 C 18) 77 1 23) 88 C 26) 73 1 22) 460
4612 LAKE HERMAN 17 C 5) 33 1 10) 27 C 8) 33 C 10) 82 ( 24) 10 1 3) 202
4613 ST JOHN LAKE 13 C 4) 88 C 26) 7 1 2) 13 C 4) 53 1 16) 43 C 13) 217
4614 LAKE KAMPESKA 33 1 10) 5 1 19) 40 C 12) 57 C 17) 88 C 26) 20 C 6) 303
4615 MADISON LAKE 27 C 8) 77 1 23) 53 C 16) 53 1 16) 13 C 4) 30 1 9) 253
4616 LAKE MITCHELL 60 1 18) 82 C 24) 47 C 14) 73 4 22) 17 C 5) 70 C 21) 349
4617 LAKE NORDEN 23 C 7) 23 C 7) 13 C 4) 40 C 12) 45 C 12) 40 C 12) 184
4618 OAKWOO() LAKE EAST 53 4 16) 17 C 5) 20 4 6) 17 4 5) 45 C 12) 85 C 25) 237
4619 OAKW000 LAKE WEST 50 C 15) 50 C 15) 23 C 7) 3 4 1) 58 4 17) 57 4 17) 241
4620 PACTOt..A RESERVOIR 100 4 30) 98 4 29) 100 C 30) 100 C 30) 35 C 10) 97 C 29) 530
4621 PICKEREL LAKE 73 C 22) 73 ( 22) 67 C 20) 63 C 19) 58 C 17) 85 C 25) 419
4622 LAKE POINSETT 57 4 17) 7 C 2) 43 4 13) 43 4 13) 45 C 12) 47 4 14) 242
4623 LAKE RED IRON SOUTH 77 4 23) 58 4 17) 80 C 24) 87 4 26) 93 C 28) 78 C 23) 473
4624 RICHMOND LAKE 47 C 14) 40 C 11) 90 4 27) 60 ( 18) 45 ( 12) 17 C 5) 299
4625 ROY LAKE 87 4 26) 98 4 29) 77 C 23) 80 4 24) 35 C 10) 78 C 23) 455
4626 SAND LAKE 7 4 2) 58 C 17) 33 C 10) 30 C 9) 23 C 7) 7 4 2) 158
4627 SHERIDAN LAKE 70 ( 21) 65 C 19) 93 C 28) 70 C 21) 5 C 0) 67 C 20) 370
- 28 KA - iCE 30 - C 7 !2) -0 ‘ 27 ‘ ‘ ) 22
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PEQCEI.IT OF LAKES WITH HIGhER VALUES (NUMaER OF LAKES WITH MIGMEW ‘!ALUES)
LME MEL) IAN MEDIAN 500— MEAt’ 15 MEDIAN INDEX
CODE LAKE NAME TOTAL P LNOQG N MEAN SEC 2PILORA MIN DO DISS ORTr’O P NO
‘.629 LAKE VERMILLION 37 ( 11) 70 ( 21) 30 C 9) 27 C 8) 68 ( 20) 33 1 10) 265
4630 WALL LAKE 43 C 13) 27 ( 8) 63 C 19) 37 C 11) 97 ( 29) 37 C 11) 304
4631 WAUBAY LAi E NORTH 63 C 19) 47 C 14) 37 C 11) 10 C 3) 30 1 9) 50 C 15) 237
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LAKES RANKED BY INDEX NOS.
RANK LAKE CODE LAKE NAME INDEX NO
1 4620 PACTOLA RESERVQ’IR 530
2 4606 CLEAR LAKE 519
3 4623 LAKE RED IRON SOUTH 473
4 4611 ENEMY SWIM LAKE 460
5 S’ 625 ROY LAKE 455
6 4610 DEERFIELD RESERVOIR 430
7 4603 ANGOSIURA RESERVOIR 427
8 4621 PICKEREL LAKE 419
9 4627 SHERIDAN LAKE 370
10 4616 LAKE MITCHELL 349
11 4602 ALVIN LAKE 340
12 4608 COCHRANE LAKE 338
13 4630 WALL. LAKE 304
14 4614 LAKE KAMPESKA 303
15 4624 RICpIMOND LAKE 299
16 4629 LAKE VERHILLION 265
17 4604 BRANT LAKE 260
18 4 5 MADISON LAKE 253
19 4622 LAKE POINSETT 242
20 4619 OAKW000 LAKE WEST 241
21 4631 WAUBAY LAKE NORTH 237
22 4618 OAKWOOD LAKE EAST 237
23 4628 STOCKADE LAKE 225
24 4613 ST JOHN LAKE 217
25 4612 LAKE HERMAN 202
26 4601 LAKE ALBERT 201
27 4617 LAKE NORDEN 184
28 SAl” ‘ KE
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LAKES RAIIKEO BY INDEX NOS.
RANK LAKE CODE LAKE NAME INDEX NO
29 4609 COTTONWOOD LAKE 124
30 4605 LAKE BYRON 123
31 4607 CLEAR LAKE 110
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APPENDIX B
CON YE RS TON 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 lbs/square mile
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APPENDIX C
PHYSICAL and CHEMICAL DATA
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STORET RETRIEVAL JATE 75/11/07
463101
‘.5 23 30.0 096 27 00.0
WAIJbAY LAr.E gOr’Tn
4603? SO u l OAKOT*
1 IEPALES
at
2111202
0008 FEET DEPTH
00665 32217
DEPTH P1105-TOT CtILRPHYL
A
MG/L P LIG/L
14/04/25 14 15 0000
14 15 0005
74/07/11 10 05 0000
10 05 0006
74/09/19 13 10 0000
13 10 0004
13 10 0005
13 10 0007
0.0 92
0.156
0.310
0.363
U .096
i i . 158
00031
ZICOT LT
REMNING
PERCENT
00010
00300
00017
0(.09
00400
00410
00610
00b2 5
00630
00671
DATE
T iME DEPTH
WATER
DO
TNANSP
CNDUCTVY
Ph
T ALK
Nr13—N
TOT KJEL
u402s1i03
PHOS—DIS
FROM
OF
TEMP
SECCH I
FIELD
CACO3
TOTAL
N
N—TOTAL
ORFriO
TO
DAY
FEET
CENT
MG/L
INCHES
MICROMMO
SU
MG/L
MG/L
MG/L
M (p/L
MG/L r’
14/04/25
14 15 0000
10.1
38
2161
314
0.010
2.800
0.080
0.0 14
14 15 0005
10.0
9.6
2096
215
0.06u
2.900
0.080
0.045
14/07/11
10 05 0000
25.2
3.6
12
3725
9.20
364
0.110
12.400
0.100
0.048
10 05 0006
25.2
3.8
3454
9.20
318
0.170
10.400
0.210
0.011
14/09/19
13 10 0000
15.2
8.4
30
3003
6.82
580
0.110
4.200
0.030
0.022
13 10 0005
15.2
8.8
3003
8.83
625
0.110
4.300
0.030
0.048
DATE
FROM
TO
TIME
OF
DAY FEET
30 • 1
900.4
42.1
50.0
1.0
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STORET RETRIEVAL DATE 75/11/07
463102
45 24 30.0 096 25 30.0
AUBAY LAr(E NO TM
46037 SO(TH OA c0TA
1IEPALES 2111202
0007 FEET DEPTH
00010 00300 u0077 00094 00400 00410 00610 00625 00630 00671
DATE TIME DEPTH WATER DO TRANSP CNDUCTVY PH T ALI( NPI3—N TOT i(JEL N02&N03 PrIOS-L)IS
FROM OF TEMP SECCHI FIELD CACO3 TOTAL N N—TOTAL ORTrIO
TO DAY FEET CENT MG/L INCHES MICROMHO SU MG/L MG/L MG/L MG/I M ,/L P
74/04/25 14 30 0000 10.3 33 3460 340 0.120 2.700 0.070 0.010
14 30 0005 8.2 8.6 3442 174 0.150 2.900 0.120 0.020
74/07/11 10 25 0000 24.7 6,6 24 7165 9.00 455 0.090 3.800 0.140 0.029
10 25 0005 24.7 6.8 7175 9.00 570 0.060 3.400 0.080 0.041
74/09/19 13 25 0000 15.7 9.0 23 5157 8.80 950 0.050 3.800 0.030 0.015
13 25 0005 15.8 9.0 5753 8.82 820 0.0’.0 3.300 0.020 0.023
00665 32217 00031
DATE TIME DEPTH PHOS—TOT CHLRPHYL INCDT LT
FROM OF A REMNING
TO DAY FEET MG/L P UG/L PERCENT
74/04/25 14 30 0000 0.080 3.9
14 30 0005 0.128
74/07/11 10 25 0000 0.103 67.8
10 25 0005 0.126
74/09/19 13 25 0000 0.069 13.1
13 25 0005 0.087
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SIORET RETRIEVAL DATE 75/11/07
463103
45 26 00 .0 096 22 30.0
WAU8AY LAKE NORTH
46031 SOUTH DAKOTA
I 1EPALES 2111202
4 0010 FEET DEPTH
00010 00300 00071 00094 00400 00410 00610 00625 00630 00671
DATE TIME DEPTH WATER DO TRANSP CNDUCTVY PH T ALK 1*13—N TOT KJEL N02&NO3 PHOS—DIS
FROM OF TEMP SECCHI FIELD CACO3 TOTAL N N—TOTAL ORTHO
TO DAY FEET CENT MG/L INCHES MICROM1IO S I ) MG/L MG/L MG/L MG/ I . MG/ I . P
74/04/25 14 45 0000 10.6 66 4310 310 0.230 3.300 0.100 0.010
14 45 0005 10.1 10.4 4292 128 0.230 3.300 0.080 0.018
74/07/11 10 45 0000 24.8 7.6 24 1134 8.90 380 0.050 3.900 0.010 0.030
10 45 0005 24.8 7.6 7134 8.90 520 0.060 4.000 0.090 0.029
14/09/19 13 SO 0000 15.2 9.2 24 5587 8.19 880 0.040 3.600 0.020 0.014
13 50 0005 15.1 9.2 5583 8.83 885 0.040 3.600 0.020 0.024
00665 322 17 00031
DATE TIME DEPTH PHOS—TOT CHLRPHYL INCDT LT
FROM OF A REMNING
TO DAY FEET MG/L P UG/L PERCENT
14/04/25 14 45 0000 0.053 1.4
14 45 0005 0.068
74/07/11 10 45 0000 0.111 78 .3
10 45 0005 0.101
74/09/19 13 50 0000 0.072 6.2
13 50 0004 50.0
13 50 0005 0.081
13 50 0008 4.0
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