U.S. ENVIRONMENTAL PROTECTION AGENCY
NATIONAL EUTROPHICATION SURVEY
WORKING PAPER SERIES
REPORT
ON
PICKEREL LAKE
DAY COUNTY
SOUTH DAKOTA
EPA REGION VIII
WORKING PAPER No, 618
CORVALLIS ENVIRONMENTAL RESEARCH LABORATORY - CORVALLIS, OREGON
and
ENVIRONMENTAL MONITORING & SUPPORT LABORATORY - LAS VEGAS, NEVADA
699-440
-------
REPORT
ON
PICKEREL LAKE
DAY COUNTY
SOUTH DAKOTA
EPA REGION VIII
WORKING PAPER No, 618
WITH THE COOPERATION OF THE
SOUTH DAKOTA DEPARTMENT OF ENVIRONMENTAL PROTECTION
AND THE
SOUTH DAKOTA NATIONAL GUARD
JANUARY/ 1977
-------
CONTENTS
Page
Foreward ii
List of South Dakota Study Lakes iv
Lake and Drainage Area Map v
Sections
I. Conclusions 1
II. Lake and Drainage Basin Characteristics 1
III. Lake Water Quality Summary 2
IV. Nutrient Loadings 3
V. Literature Reviewed 7
VI. Appendices 8
-------
11
FOREWORD
The National Eutrophication Survey was initiated in 1972 in
response to an Administration commitment to investigate the nation-
wide threat of accelerated eutrophication to freshwater lakes and
reservoirs.
OBJECTIVES
The Survey was designed to develop, in conjunction with state
environmental agencies, information on nutrient sources, concentrations,
and impact on selected freshwater lakes as a basis for formulating
comprehensive and coordinated national, regional, and state management
practices relating to point-source discharge reduction and non-point
source pollution abatement in lake watersheds.
ANALYTIC APPROACH
The mathematical and statistical procedures selected for the
Survey's eutrophication analysis are based on related concepts that:
a. A generalized representation or model relating
sources, concentrations, and impacts can be constructed.
b. By applying measurements of relevant parameters
associated with lake degradation, the generalized model
can be transformed into an operational representation of
a lake, its drainage basin, and related nutrients.
c. With such a transformation, an assessment of the
potential for eutrophication control can be made.
LAKE ANALYSIS
In this report, the first stage of evaluation of lake and water-
shed data collected from the study lake and its drainage basin is
documented. The report is formatted to provide state environmental
agencies with specific information for basin planning [§303(e)]5 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
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 Blaine Barker and Duane Murphy,
Department of Environmental Quality; Douglas Hansen, Department
of Game, Fish and Parks; and James Hayden, Director, State Lakes
Preservation Committee 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.
-------
1v
NATIONAL EUTROPHICATION SURVEY
STUDY LAKES
STATE OF SOUTH DAKOTA
LAKE NAME
Albert
Alvin
Angostura
Brant
Byron
Clear
Clear
Cochrane
Cottonwood
Deerfield
Enemy Swim
Herman
John
Kampeska
Madison
Mitchell
Norden
East Oakwood
West Oakwood
Pactola
Pickerel
Poinsett
Red Iron South
Richmond
Roy
Sand
Sheridan
Stockdale
East Vermillion
Wall
Waubay
COUNTY
Kingsbury
Lincoln
Fall River
Lake
Beadle
Marshall
Minnehaha
Deuel
Spink
Pennington
Day
Lake
Hamlin
Codington
Lake
Davidson
Hamlin
Brookings
Brookings
Pennington
Day
Brookings,
Marshall
Brown
Marshall
Brown
Pennington
Custer
McCook
Minnehaha
Day
Lake
-------
- cr"
97*18'
S. Dak.
Map Location
PICKEREL LAKE
X Lake Sampling Site
4 Km.
j
Scale
2 Mi
97*16'
97°14'
97"12'
45'32 —
45*30 —
97*10'
-------
PICKEREL LAKE
STORE! NO. 4621
I. INTRODUCTION
Pickerel lake was included in the National Eutrophication Survey
as a water body of interest to the South Dakota Departments of Environ-
mental Protection and Game, Fish and Parks. Tributaries and nutrient
sources were not sampled, and this report relates only to the lake
sampling data.
II. CONCLUSIONS
A. Trophic Condition:
Survey data indicate that Pickerel Lake is eutrophic. It
ranked eighth in overall trophic quality when the 31 South Dakota
lakes sampled in 1974 were compared using a combination of six
parameters*. Eight of the lakes had less median total phosphorus
and inorganic nitrogen, three had less and two had the same
median dissolved orthophosphorus, 11 had less mean chlorophyll
a_, and ten had greater mean Secchi disc transparency.
Survey limnologists noted an algal bloom in progress in
September.
B. Rate-Limiting Nutrient:
Because of significant changes in nitrogen and phosphorus
levies in the algal assay samples, the results are not consi-
dered representative of conditions in the lake at the times the
samples were collected (04/25/74 and 09/19/74).
The lake data indicate nitrogen limitation each sampling
time.
* See Appendix A.
-------
III. LAKE AND DRAINAGE BASIN CHARACTERISTICS1"
4-4-
A. Lake Morphometry :
1. Surface area: 3.86 kilometers2.
2. Mean depth: 6.1 meters.
3. Maximum depth: 13.2 meters.
4. Volume: 23.546 x 106 m3.
B. Precipitation*:
1. Year of sampling: 31.3 centimeters,
2. Mean annual: 51.0 centimeters.
t Table of metric equivalents—Appendix B.
tt Murphey, 1974.
* See Working Paper No. 175, "...Survey Methods, 1973-1976",
-------
IV. LAKE WATER QUALITY SUMMARY
Pickerel 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 paramters were collected from two
stations on the lake and from a number of depths at each station (see
map, page v). During each visit, a single depth-integrated (4.6 m to
surface) sample was composited from the stations for phytoplankton
identification and enumeration; and during the first and third visits,
18.9-liter depth-integrated samples were 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 6.1 meters at station 1 and 8.5 meters at station 2.
The sampling results are presented in full in Appendix C and are
summarized in the following table.
-------
PARAMETER
TEMP (C)
OISS OXY (MG/L)
CNDCTVY (MCROMO)
PH (STAND UNITS)
TOT AUK
TOT P (MG/L)
ORTHO P (MG/L)
N02»N03 (MG/L)
AMMONIA (MG/L)
KJEL N (MG/L)
INORG N (MG/L)
TOTAL N (MG/L)
CHLRPYL A (UG/L)
SECCHI (METERS)
A. SUMMARY OF PHYSICAL AND
1ST SAMPLING ( 4/25/74)
2 SITES
RANGE MEAN MEDIAN
7.2 - 9.4 8.2 8.1
10.0 - 11.6 10.7 10.7
323. - 339. 331. 331.
«««*»« -«e»»»««e»»«««»a»»««««*
194. - 226. 210. 208.
0.038 - 0.410 0.142 0.079
0.004 - 0.025 0.011 0.009
0.030 - 0.070 0.049 0.045
0.020 - 0.050 0.036 0.035
0.800 - 2.000 1.187 0.950
0.050 - 0.120 0.085 0.080
0.840 - 2.070 1.236 0.995
9.8 - 10.7 10.2 10.2
1.3 - 1.5 1.4 1.4
CHEMICAL CHARACTERISTICS FOK PICKEREL LAKE
STORET COOE -»621
2ND SAMPLING ( 7/11/74)
2 SITES
RANGE
23.5
5.4
561.
8.6
242.
O.OJ9
0.013
0.050
0.060
0.800
0.110
0.850
6.3
1.5
- 24.6
7.0
- 564.
8.9
- 250.
- 0.067
- 0.022
- 0.080
- 0.140
- 1.700
- 0.200
- 1.780
- 25.5
2.5
MEAN
24.0
6.3
562.
8.7
246.
0.050
0.019
0.062
0.103
1.017
0.165
1.076
15.9
2.0
MEDIAN
24.0
6.4
562.
8.7
246.
0.049
0.019
0.060
0.110
0.900
0.175
0.960
15.9
2.0
3RD SAMPLING ( 9/19/74)
2 SITES
RANGE MEAN MEDIAN
15.2 - 15.7 15.4 15.4
•8.6 - 9.2 9.0 9.2
389. - 395. 392. 392.
8.6 - 8.6 8.6 8.6
228. - 635. 330. 273.
0.040 - 0.050 0.045 0.045
0.006 - 0.00? O.OOtt 0.007
0.020 - 0.140 0.040 0.020
0.020 - 0.030 0.023 0.020
0.900 - 1.600 1.133 1.100
0.040 - 0.160 0.063 0.045
1.020 - 1.620 1.173 1.120
17.7 - 25.0 21.3 21.J
1.1 - 1.2 1.2 1.2
-------
B. Biological characteristics:
1. Phytoplankton -
Sampling
Date
04/25/74
07/11/74
09/19/74
2. Chlorophyll a_ -
Sampling
Date
04/25/74
07/11/74
09/19/74
Dominant
Genera
1.
2.
3.
4.
5.
1.
2.
3.
4.
5.
1.
2.
3.
4.
5.
Asterionella sp.
Chroomonas SJD.
Fragilaria sp.
Microcystis sp.
Crucigenia SJD.
Other genera
Total
Chroomonas sp.
Melosira sp.
Microcystis sp_.
Oscillatoria sp.
Schroederia sp.
Other genera
Total
Anabaena sp.
Fragilaria sp.
Flagellates
Microcystis sp.
Phormiduim sp.
Other genera
Total
Station
Number
1
2
1
2
1
2
Algal Units
per ml
15,938
3,637
898
359
180
628
21,640
1,290
6,612
Chlorophyll a_
(yg/D '
9.8
10.7
6.3
25.5
25.0
17.7
-------
C. Limiting Nutrient Study:
Significant changes in nitrogen and phosphorus levels
occurred in the assay samples during shipment from the field to
the laboratory, and the results are not considered representative
of conditions in the lake at the times the samples were taken
(04/25/74 and 09/19/74).
The lake data indicate nitrogen limitation at all sampling
times, i.e., the mean inorganic nitrogen/orthophosphorus ratios
were 9/1 or less, and nitrogen limitation would be expected.
-------
V. LITERATURE REVIEWED
Murphey, Duane G., 1974. Personal communication (lake morphometry)
SD Dept. of Env. Prot., Pierre.
Petri, Lester R., and L. Rodney Larson, 1966(7). Quality of water
in selected lakes of eastern South Dakota. Rept. of Inv. #1,
SD Water Res. Corran., Pierre.
-------
VI. APPENDICES
8
APPENDIX A
LAKE RANKINGS
-------
LAKE DATA TO BE USED IN RANKINGS
LAKE
CODE LAKE NAME
4601 LAKE ALBERT
4602 ALVIN LAKE
4603 ANGOSTURA RESERVOIR
4604 BRANT LAKE
4605 LAKE BYRON
4606 CLEAR LAKE
4607 CLEAR LAKE
4608 COCHRANE LAKE
4609 COTTONWOOO LAKE
4610 DEERFIELO RESERVOIR
4611 ENEMY SWIM LAKE
4612 LAKE HERMAN . J
4613 ST JOHN LAKE
4614 LAKE KAMPESKA
4615 MADISON LAKE
4616 LAKE MITCHELL
4617 LAKE NOROEN
4618 OAKWOOO LAKE EAST
4619 OAKWOOO LAKE WEST
4620 PACTOLA RESERVOIR
4621 PICKEREL LAKE
4622 LAKE POINSETT
4623 LAKE RED IRON SOUTH
4624 RICHMOND LAKE
4625 ROY LAKE
4626 SAND LAKE
4627 SHERIDAN LAKE
4628 STOCKADE LAKE
MEDIAN
TOTAL P
0.321
0.067
0.019
0.194
0.443
0.027
1.400
0.037
0.685
0.033
0.037
0.340
0.348
0.220
0.250
0.099
0.256
0.146
0.181
0.011
0.049
0.115
0.042
0.187
0.034
0.489
0.053
0.233
MEDIAN
INORG N
0.170
0.970
0.160
0.130
0.370
0.075
0.270
0.150
0.265
0.080
0.085
• 0.155
0.080
0.105
0.090
0.085
0.165
0.175
0.135
0.070
0.095
0.315
0.110
0.150
0.070
0.110
0.105
0.150
500-
MEAN SEC
489.111
442.833
423.333
432.833
488.333
430.167
495.333
446.000
490.333
303.333
442.600
485.000
489.400
468.889
445.555
465.833
488.667
487.000
485.833
248.444
439.833
468.444
430.333
410.000
.431.000
471.800
394.000
432.000
MEAN
CHLORA
106.289
4.700
3.717
34.150
149.350
11.983
691.000
15.683
112.017
3.650
14.200
58.733
120.880
20.567
22.578
14.883
46.800
113.600
159.667
1.478
15.833
40.211
6.883
18.467
13.333
65.790
15.433
25.400
15-
MIN DO
9.200
9.400
13.000
11.800
9.000
8.800
7.000
15.000
8.600
15.000
8.200
8.600
9.800
8.200
14.000
13.800
10.000
10.000
9.600
11.000
9.600
10.000
7.600
10.000
11.000
12.800
15.000
15.000
MEDIAN
DISS ORTriO P
0.019
0.017
0.005
0.113
0.146
0.009
0.468
0.008
0.417
0.022 -
0.013
0.174
0.025
0.128
0.107
0.015
0.050
0.009
0.021
0.006
0.009
0.023
0.010
0.144
0.010
0.288
0.016
0.109
-------
LAKE DATA TO BE USED IN RANKINGS
LAKE
CODE LAKE NAME
4629 LAKE VERMILLION
4630 WALL LAKE
WAUBAY LAKE NORTH
MEDIAN
TOTAL P
0.211
0.194
0.093
MEDIAN
INORG N
0.100
0.160
0.145
500-
MEAN SEC
472.833
441.667
469.555
MEAN
CMLORA
100.800
55.267
127.033
15-
MIN DO
9.200
7.400
11.400
MEDIAN
DISS ORTHO
0.092
0.076
0.023
P
-------
PERCENT OF LAKES WITH HIGHER VALUES (NUMBER OF LAKES WITH HIGHER VALUES)
LAKE
CODE LAKE NAME
4601 LAKE ALBERT
4602 ALVIN LAKE
4603 ANGOSTURA RESERVOIR
4604 BRANT LAKE
4605 LAKE BYRON
4606 CLEAR LAKE
4607 CLEAR LAKE
4608 COCHRANE LAKE
4609 COTTONWOOD LAKE
4610 DEERFIELD RESERVOIR
4611 ENEMY SWIM LAKE
4612 LAKE HERMAN
4613 ST JOHN LAKE
4614 LAKE KAMPESKA
4615 MADISON LAKE
4616 LAKE MITCHELL
4617 LAKE NQROEN
4618 OAKWOOD LAKE EAST
4619 OAKWOOD LAKE WEST
4620 PACTOLA RESERVOIR
4621 PICKEREL LAKE
4622 LAKE POINSETT
4623 LAKE RED IRON SOUTH
4624 RICHMOND LAKE
4625 ROY LAKE
4626 SAND LAKE
4627 SHERIDAN LAKE
4628 STOCKADE LAKE
MEDIAN
TOTAL P
20 (
67 (
97 (
40 (
10 <
93 <
0 (
83 1
3 1
90 1
80 . 1
17 1
13 <
33 <
27 1
60 (
23 I
53 <
50 i
100
73 i
57 i
77
47
87
7
70
30
6)
: 20)
: 29)
: 12)
: 3)
: 28)
: o)
1 25)
I 1)
[ 27)
[ 24)
[ 5)
! 4)
I 10)
! 8)
! 18)
1 7)
( 16)
t 15)
t 30)
I 22)
( 17)
( 23)
( 14)
( 26)
( 2)
( 21)
( 9)
MEDIAN
INORG N
20 <
0 <
30 <
53 <
3 (
93 (
10 <
40 I
13 (
88 1
82 (
33 <
88 1
65 <
77 1
82 <
23 1
17 I
50 I
98 i
73 1
7 <
58 <
40
98
58
65
40
6)
0)
9)
: 16)
: i)
: 28)
: 3)
: ID
: 4)
: 26)
; 24)
: 10)
; 26)
; 19)
1 23)
I 24)
; 7)
I 5)
; is)
t 29)
t 22)
I 2)
( 17)
( 11)
( 29)
( 17)
( 19)
( 11)
500-
MEAN SEC
10 (
57 <
87 <
70 <
17 1
83 <
0 (
50 <
3 1
97 1
60 (
27 1
7 1
40 (
53 I
47 1
13 I
20 *
23 i
100 i
67 i
43 '
80
90
77
33
93
73
: 3,
; 17)
! 26)
: 21)
: 5)
; 25)
: o>
: 15)
[ i)
: 29)
: 18)
: s>
[ 2)
! 12)
I 16)
I 14)
[ 4)
I 6)
t 7)
( 30)
( 20)
( 13)
( 24)
( 27)
( 23)
( 10)
( 28)
( 22)
MEAN
CHLORA
23 (
90 (
93 1
47 1
7 1
83 1
0 <
67 1
20 1
97 1
77 (
33 1
13 1
57 1
53 1
73 I
40 1
17 I
3 <
100
63 i
43
87
60
80
30
70
50
; 7)
1 27)
; 28)
; 14)
; 2)
! 25)
: o>
I 20)
; 6)
t 29)
; 23)
; 10)
[ 4)
I 17)
[ 16)
1 22)
1 12)
I 5)
I 1)
( 30)
( 19)
( 13)
( 26)
( 18)
( 24)
( 9)
( 21)
( 15)
15-
MIN DO
68 (
63 1
20 <
27 1
73 <
77 (
100 <
5 1
82 1
5 1
88 (
82 <
53 (
88 1
13 1
17 1
45 (
45 i
58 <
35 i
58 <
45
93
45
35
23
5
5
: 20)
; 19)
: 6)
; 8>
: 22)
: 23)
: 30)
; o>
i 24)
; o>
: 26)
; 24)
[ 16)
I 26)
1 4)
1 5)
I 12)
I 12)
t 17)
( 10)
( 17)
( 12)
( 28)
( 12)
( 10)
( 7)
< 0)
( 0)
MEDIAN
DISS ORTHO P
60 <
63 (
100 I
23 (
13 <
90 (
0 <
93 1
3 1
53 (
73 (
10 1
43 <
20 1
30 1
70 1
40 <
85 i
57 I
97 i
85 i
47 '
78
17
78
7
67
27
i 18)
1 19)
, 30)
: 7>
; 4)
27)
: o>
; 28)
: i)
; 16)
; 22)
; 3>
I 13)
: 6>
! 9)
1 21)
t 12)
[ 25)
I 17)
I 29)
1 25)
( 14)
( 23)
( 5)
( 23)
( 2)
< 20)
( 8)
INDEX
NO
201
340
427
260
123
519
110
338
124
430
460
202
217
303
253
349
184
237
241
530
419
242
473
299
455
158
370
225
-------
PERCENT OF LAKES WITH HIGHER VALUES (NUMBER OF LAKES WITH HIGHER VALUES)
LAKE
CODE LAKE NAME
4629 LAKE VERMILLION
4630 WALL LAKE
WAUBAY LAKE NORTH
MEDIAN
TOTAL P
37 (
43 (
63 (
11)
13)
19)
MEDIAN
INORG N
70
27
47
< 21)
( 8)
( 14)
500-
MEAN SEC
30
63
37
( 9)
( 19)
( 11)
MEAN
CHLORA
27
37
10
( 8)
( 11)
( 3)
15-
MIN 00
68
97
30
( 20)
( 29)
( 9)
MEDIAN
DISS ORTHO P
33
37
50
( 10)
( 11)
( 15)
INDEX
NO
265
304
237
-------
LAKES RANKED BY INDEX NOS.
RANK LAKE CODE LAKE NAME
INDEX NO
1
2
3
4
5
6
7
8
9
10
11
12
13
14
IS
16
17
18
19
20
21
22
23
24
25
26
27
28
4620
4606
4623
4611
4625
4610
4603
4621
4627
4616
4602
4608
4630
4614
4624
4629
4604
4615
4622
4619
4631
4618
4628
4613
4612
4601
4617
4626
PACTOLA RESERVOIR
CLEAR LAKE
LAKE RED IRON SOUTH
ENEMY SWIM LAKE
ROY LAKE
DEERFIELD RESERVOIR
ANGOSTURA RESERVOIR
PICKEREL LAKE
SHERIDAN LAKE
LAKE MITCHELL
ALVIN LAKE
COCHRANE LAKE
WALL LAKE
LAKE KAMPESKA
RICHMOND LAKE
LAKE VERMILLION
BRANT LAKE
MAOISON LAKE
LAKE POINSETT
OAKWOOD LAKE WEST
WAUBAY LAKE NORTH
OAKWOOD LAKE EAST
STOCKADE LAKE
ST JOHN LAKE
LAKE HERMAN
LAKE ALBERT
LAKE NORDEN
SAND LAKE
530
519
473
460
455
430
427
419
370
349
340
338
304
303
299
265
260
253
242
241
237
237
225
217
202
201
184
158
-------
LAKES RANKED BY INDEX NOS.
RANK LAKE CODE LAKE NAME INDEX NO
E9 4609 COTTONWOOD LAKE 134
30 4605 LAKE BYRON 123
31 4607 CLEAR LAKE 110
-------
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"4 = 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 s Ibs/square mile
-------
APPENDIX C
PHYSICAL and CHEMICAL DATA
-------
STOKEr *ET*IEvAL iJ:f->
CtNT
9.4
f*.6
7.4
23.5
23.5
23.5
15.7
15.5
15.5
i<0'6"
•SOS-TOT
•1G/L *>
0.0 3rt
0.049
0.410
0.039
0.04ti
J.051
0.046
00300
00
MG/L
10.4
11.0
5.8
5.6
5.4
9.2
9.2
e.B
32217
CHLPPMYL
A
UG/L
9.8
6.3
25.0
00077
TKANSP
SECCHl
INCHES
58
100
42
00031
INCOT LT
HEMNING
PERCENT
OCO?4
C.'MOUCTVY
FIELD
MICKOMHO
336
334
324
564
562
5b2
393
395
391
0.045
50.0
5.0
1.0
HEPALES
4
00400
Ph
su
8.70
8.60
6.60
8.63
e.61
8.61
OU41 j
T ALK
CAC03
MG/L
226
210
222
242
246
250
276
262
211
0020
00610
NH3-N
TOTAL
MG/L
0.040
0.030
0.050
0.140
0.130
0.140
O.G20
0.030
0.020
1202
FEET OE^Tn
00625
TOT KJEL
N
MG/L
0.900
0.800
2.000
1.000
0.800
0.300
1.600
1.100
1.000
00630
N02kN03
N-TOTAL
MG/L
0.060
0.040
0.070
0.060
0.050
O.ObO
0.020K
0.020K
0.020K
00671
PHOS-DIS
OKTHO
MG/L P
0.004
0.007
0.025
0.019
0.019
0.022
0.007
0.008
0.009
K VALUE KNOwN TO BE
LESS THAN INDICATED
-------
STORET RETRIEVAL JATE 75/11/25
462102
45 31 00.0 096 17 00.0
46037 SOUTH DAivuTA
DATE
FROM
TO
74/04/25
74/07/11
74/09/19
DATE
FROM
TO
74/04/25
74/07/11
74/09/19
TIME DEPTH
OF
DAY FEET
16 00 0000
16 00 0005
16 00 0015
16 00 0020
16 00 0025
13 45 0000
13 45 U015
13 45 0028
14 50 0000
14 50 0015
14 50 0025
TIME DEPTH
OF
DAY FEET
16 00 0000
16 00 0005
16 00 0015
16 00 0020
16 00 0025
13 45 0000
13 45 0015
13 45 0029
14 50 0000
14 50 0015
14 50 0025
00010
WATER
TLMP
CtNT
9.U
8.3
8.0
7.8
7.2
24.6
24.6
24.4
15.3
15.3
15.2
00665
PHOS-TOT
MG/L P
0.052
0.109
0.067
C.0^2
0.319
0.054
0.067
0.043
0.040
0.042
0.050
00300
DO
*IG/L
ic. a
11.6
1C. 6
10.0
7.0
7.0
7.0
9.2
9.2
8.6
32217
CHLRPHYL
A
UG/L
10.7
25.5
17.7
00077
TRaNSP
SECCHl
INCHES
52
60
49
00031
INCDT LT
SLMNING
PERCENT
00094
CNOUCTVY
FIELD
M1CROMHO
339
330
328
323
332
561
562
561
389
392
389
11EPALES
4
00400
r>n
su
8.90
8.90
8.70
8.63
8.61
8.61
00410
T ALK
CAC03
MG/L
206
194
204
200
214
248
246
242
270
306
228
211
0030
00610
NH3-N
TOTAL
Mo/L
0.020
0.030
0.030
0.040
0.050
0.090
O.ObO
0.060
0.030
0.020
0.020K
1202
FEET DEPTH
00625
TOT KJEL
N
MG/L
0.900
0.800
1.000
1.100
2.000
1.700
0.900
0.900
1.100
1.100
0.900
00630
N02&N03
N-TOTAL
MG/L
0.030
0.040
0.030
0.050
0.070
0.08U
0.070
0.050
0.020K
0.020K
0.140
00671
PHOS-DIS
URTHO
MG/L P
0.006
0.012
0.010
0.009
0.014
0.018
0.021
0.013
0.006
0.007
0.009
K VALUE KNOWN TO BE
LESS THAN INDICATED
------- |