U.S. ENVIRONMENTAL PROTECTION AGENCY
NATIONAL EUTROPHICATION SURVEY
WORKING PAPER SERIES
REPORT
ON
GREEN LAKE
KANDIYOHI COUNTY
MINNESOTA
REGION V
WORKING PAPER No, 101
PACIFIC NORTHWEST ENVIRONMENTAL RESEARCH LABORATORY
An Associate Laboratory of the
NATIONAL ENVIRONMENTAL RESEARCH CENTER • CORVALLIS, OREGON
and
NATIONAL ENVIRONMENTAL RESEARCH CENTER - LAS VEGAS, NEVADA
-------
REPORT
ON
GREEN LAKE
KANDIYOHI COUNTY
MINNESOTA
EPA REGION V
WORKING PAPER No, 101
WITH THE COOPERATION OF THE
MINNESOTA POLLUTION CONTROL AGENCY
AND THE
MINNESOTA NATIONAL GUARD
NOVEMBER, 1974
-------
1
CONTENTS
Page
Foreword ii
List of Minnesota Study Lakes iv, v
Lake and Drainage Area Map vi
Sections
I. Conclusions 1
II. Lake and Drainage Basin Characteristics 3
III. Lake Water Quality Summary 4
IV. Nutrient Loadings 9
V. Literature Reviewed 15
VI. Appendices 16
-------
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 fresh water 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)1, water
quality criteria/standards review [ 3O3(c)], clean lakes [ g3l4(a,b)],
and water quality monitoring [ lO6 and §305(b)] activIties mandated
by the Federal Water Pollution Control Act Amendments of 1972.
-------
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
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.
AC KNO WL EDGMENT
The staff of the National Eutrophication Survey (Office of
Research & Development, U. S. Environmental Protection Agency)
expresses sincere appreciation to the Minnesota Pollution Control
Agency for professional involvement and to the Minnesota National
Guard for conducting the tributary sampling phase of the Survey.
Grant J. Merritt, Director of the Minnesota Pollution Control
Agency, John F. McGujre, Chief, and Joel G. Schilling, Biologist,
of the Section of Surface and Groundwater, Division of Water Quality,
provided invaluable lake documentation and counsel during the course
of the Survey; and the staff of the Section of Municipal Works, Divi-
sion of Water Quality, were most helpful in identifying point sources
and soliciting municipal participation in the Survey.
Major General Chester J. Moeglein, the Adjutant General of
Minnesota, and Project Officer Major Adrian Beltrand, who directed
the volunteer efforts of the Minnesota National Guardsmen, are also
gratefully acknowledged for their assistance to the Survey.
-------
iv
NATIONAL EUTROPHICATION SURVEY
STUDY LAKES
STATE OF MINNESOTA
LAKE NAME COUNTY
Albert Lea Freeborn
Andrusia Beltrami
Badger Polk
Bartl ett Koochi chi ng
Bear Freeborn
Bemidji Beltrami
Big Stearns
Big Stone Big Stone, MN; Roberts,
Grant, SD
Birch Cass
Bl ackduck Bel trami
Blackhoof Crow Wing
Budd Martin
Buffalo Wright
Calhoun Hennepin
Carlos Douglas
Carrigan Wright
Cass Beltrami, Cass
Clearwater Wright, Stearns
Cokato Wright
Cranberry Crow Wing
Darling Douglas
Elbow St. Louis
Embarass St. Louis
Fall Lake
Forest Washington
Green Kandiyohi
Gull Cass
Heron Jackson
Leech Cass
Le Home Dieu Douglas
Lily Blue Earth
Little Grant
Lost St. Louis
-------
V
LAKE NAME COUNTY
Madison Blue Earth
Malmedal Pope
Mashkenode St. Louis
McQuade St. Louis
Minnetonka Hennepin
Minnewaska Pope
Mud Itasca
Nest Kandiyohi
Pelican st. Louis
Pepin Goodhue, Wabasha, MN;
Pierce, Pepin, WI
Rabbit Crow Wing
Sakatah Le Sueur
Shagawa St. Louis
Silver McLeod
Six Mile st. Louis
Spring Washington, Dakota
St. Croix Washington, MN; St. Croix,
Pierce, WI
St. Louis Bay st. Louis, MN; Douglas, WI
Superior Bay st. Louis, MN; Douglas, WI
Swan Itasca
Trace Todd
Trout Itasca
Wagonga Kandiyohi
Walimark Chisago
White Bear Washington
Winona Douglas
Wolf Beltrarni, Hubbard
Woodcock Kandiyohi
Zumbro Olmstead, Wabasha
-------
Map Location
GREEN LAKE
Tributary Sampling Site
Lake Sampling Site
Direct Drainage Area Limits
Indirect Drainage Area
Sewage Treatment Facility
940 52’
-------
GREEN LAKE
STORET NO. 27B2
I. CONCLUSIONS
A. Trophic Condition:
Survey data indicate Green Lake is meso—eutrophic, although
water quality is relatively good. Of the 60 Minnesota lakes
sampled in the fall when essentially all were well-mixed, only
two had less mean total phosphorus, only three had less mean
dissolved phosphorus, but 18 had less mean inorganic nitrogen.
Of the 80 lakes sampled, 7 had greater Secchi disc transparency,
and 6 had less mean chlorophyll a. However, depression of dis-
solved oxygen with depth occurred in July and late August, parti-
cularly at station 1, and blue—green algae were present in all
phytoplankton samples.
Survey limnologists observed a light algal bloom in progress
in July, 1972.
B. Rate-Limiting Nutrient:
The algal assay results show that Green Lake was phosphorus
limited at the time the assay sample was collected. The lake
data indicate phosphorus limitation in late August (N/P ratio =
28/1) but nitrogen limitation in July (N/P ratio = <1/1).
-------
2
C. Nutrient Controllability:
1. Point sources--There are no known nutrient point-sources
impacting Green Lake directly. The waste treatment facilities of
the villages of Belgrade and New London are discussed in “Report
on Nest Lake”, Working Paper No. 117, and the Spicer STP dis-
charges to Woodcock Lake which has a high-water overflow to
Green Lake.
During the sampling year, Green Lake received a total phos-
phorus load at a rate a little less than that proposed by Vollen-
weider (in press) as “permissible”; i.e., an oligotrophic rate
(see page 14).
The Minnesota Pollution Control Agency has stipulated phos-
phorus removal at the villages of Belgrade and New London and
the City of Spicer (Schilling, 1974). Although the primary
receiving waters (Nest and Woodcock lakes) probably will bene-
fit most, the resulting reduction in loading to Green Lake should
improve the trophic condition there as well.
2. Non-point sources (see page 14)--The nutrient exports
of the Nest Lake outlet were quite low because of entrapment
in Nest Lake.
In all , non-point sources are estimated to have contributed
nearly 49% of the total phosphorus load to Green Lake during the
sampling year.
-------
3
II. LAKE AND DRAINAGE BASIN CHARACTERISTICS
A. Lake Morphometry t :
1. Surface area: 5,406 acres.
2. Mean depth: 21 feet.
3. Maximum depth: 110 feet.
4. Volume: 113,526 acre/feet.
5. Mean hydraulic retention time: 3.7 years.
B. Tributary and Outlet:
(See Appendix A for flow data)
1. Tributaries -
Name Drainage areatt Mean flowtt
Nest Lake outlet 123.0 mi 2 37.5 cfs
Woodcock Lake outlet* ? ?
Minor tribuaries & 2
immediate drainage - 6.6 ml 4.9 cfs
Totals 129.6 mi 2 42.4 cfs
2. Outlet —
Middle Fork, Crow River 138.0 m 1 2 ** 42.4 cfs
C. Precipitation***:
1. Year of sampling: 28.1 inches.
2. Mean annual: 24.5 inches.
t DNR lake survey map (1970); mean depth by random-dot method.
ft Drainage areas are accurate within ±5%; mean daily flows are accurate
within ±10%; and ungaged flows are accurate within ±10 to 25% for
drainage areas greater than 10 mi 2 .
* Woodcock Lake has a high-water overflow to Green Lake (Lang, 1972), but
the volume is not known.
** Includes area of lake.
See Working Paper No. 1, “Survey Methods”.
-------
4
III. LAKE WATER QUALITY SUP1 lARY
Green Lake was sampled three times during the open-water season
of 1972 by rieans of a pontoon-equipped Huey helicopter. Each time,
samples for physical and chemical parameters were collected from two
stations on the lake and from a number of depths at each station (see
map, page vi). During each visit, a single depth-integrated (15 feet
to surface) sample was composited from the stations for phytoplanktori
identification and enumeration; and during the last visit, a single
five-gallon 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 44 feet at station 1 and 50 feet at station 2.
The results obtained are presented in full in Appendix B, and the
data for.the fall sampling period, when the lake was essentially well-
mixed, are summarized below. Note, however, the Secchi disc summary
is based on all values.
For differences in the various parameters at the other sampling
times, refer to Appendix B.
-------
II. LAKE AND DRAINAGE BASIN CHARACTERISTICS
A. Lake Morphometry :
1. Surface area: 5,406 acres.
2. Mean depth: 21 feet.
3. Maximum depth: 110 feet.
4. Volume: 113,526 acre/feet.
5. Mean hydraulic retention time: 3.7 years.
B. Tributary and Outlet:
(See Appendix A for flow data)
1. Tributaries -
tt tt
Name Drainage area Mean flow
Nest Lake outlet 123.0 mi2 37.5 cfs
Woodcock Lake outlet* ? ?
Minor tribuaries & 2
immediate drainage - 6.6 mi 4.9 cfs
Totals 129.6 mi2 42.4 cfs
2. Outlet -
Middle Fork, Crow River 138.0 mi2** 42.4 cfs
C. Precipitation***:
1. Year of sampling: 28.1 inches.
2. Mean annual: 24.5 inches.
t DNR lake survey map (1970); mean depth by random-dot method.
tt Drainage areas are accurate within ±5%; mean daily flows are accurate
within ±10%; and ungaged flows are accurate within ±10 to 25% for
drainage areas greater than 10 mi2.
* Woodcock Lake has a high-water overflow to Green Lake (Lang, 1972), but
the volume is not known.
** Includes area of lake.
*** See Working Paper No. 1, "Survey Methods".
-------
4
III. LAKE WATER QUALITY SUMMARY
Green Lake was sampled three times during the open-water season
of 1972 by means of a pontoon—equipped Huey helicopter. Each time,
samples for physical and chemical parameters were collected from two
stations on the lake and from a number of depths at each station (see
map, page vi). During each visit, a single depth-integrated (15 feet
to surface) sample was composited from the stations for phytoplankton
identification and enumeration; and during the last visit, a single
five—gallon 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 44 feet at station 1 and 50 feet at station 2.
The results obtained are presented in full in Appendix B, and the
data for.the fall sampling period, when the lake was essentially well-
mixed, are summarized below. Note, however, the Secchi disc summary
is based on all values.
For differences in the various parameters at the other sampling
times, refer to Appendix B.
-------
5
A. Physical and chemical characteristics:
FALL VALUES
(10/25/72)
Parameter Minimum Mean Median Maximum
Temperature (Cent.) 7.8 7.9 7.8 8.0
Dissolved oxygen (mg/l) 5.4 9.2 9.5 11.2
Conductivity (jimhos) 324 341 345 360
pH (units) 8.3 0.4 8.4 8.4
Alkalinity (nig/l) 171 175 175 178
Total P (mg/i) 0.014 0.016 0.016 0.020
Dissolved P (mg/l) 0.006 0.009 0.009 0.012
NO 9 + N0 (mg/l) 0.090 0.091 0.090 0.100
Ani flonia ‘ (mg/i) 0.030 0.040 0.040 0.050
ALL VALUES
Secchi disc (inches)
90 110
105 138
-------
6
B. Biological characteristics:
1. Phytoplankton -
Sampling Dominant Number
Date Genera per ml
07/02/72 1. Microcystis 1,826
2. Dinobryon 1,808
3. Fragilaria 669
4. ChroococcuS 344
5. Pediastrum 235
Other genera 398
Total 5,280
08/21/72 1. Dinobryon 675
2. Microcystis 476
3. Anabaena 139
4. Merismopedia 120
5. Flagellates 84
Other genera 260
Total 1,754
10/25/72 1. Fragilaria 1,491
2. Flagellates 738
3. Dinobryon 572
4. Anabaena 527
5. Melosira 301
Other genera 1,491
Total 5,120
-------
7
08/31/72 01
02
10/25/72 01
02
ting Nutrient Study:
Autoclaved, filtered, and nutrient spiked -
Ortho P Inorganic N
___________ Conc. (mg/i) Conc. (mci/i )
0.011 0.118
0.016 0.118
0.021 0.118
0.031 0.118
0.061 0.118
0.061 10.118
0.011 10.118
C. Limi
1.
2. Chlorophyll a -
(Because of instrumentation problems during the 1972 sampling,
the following values may be in error by plus or minus 20
percent.)
Sampling Station Chlorophyll a
Date — Number ( pg/i )
07/02/72 01 5.7
02 6.4
5.5
4.1
3.5
4.0
Maximum yield
_________ - ( mg/l —dry wt. )
1.3
2.6
3.1
3.2
3.4
24.5
1.5
Spike (mg/i ) _________ _________
Control
0.005 P
0.010 P
0.020 P
0.050 P
0.050 P + 10.0 N
10.0 N
2. Discussion -
The control yield of the assay alga, Selenastrum capri—
cornutum , indicates that the potential primary productivity
of Green Lake at the time the sample was collected was mod-
erate. Also, the increasing yields with increasing incre-
ments of orthophosphorus (to about 0.020 mg/i) show that
-------
8
Green Lake was phosphorus limited at the time the sample was
collected in October, 1972. Note that the addition of only
nitrogen produced a yield not significantly different than
the control yield.
Lake data indicate phosphorus limitation in the lake
in August (N/P ratio = 28/1) but nitrogen limitation in July
(N/P ratio = <1/1).
-------
9
IV. NUTRIENT LOADINGS
(See Appendix C for data)
For the determination of nutrient loadings, the Minnesota National
Guard collected monthly near—surface grab samples from each of the tribu-
tary sites indicated on the map (page vi), except for the high runoff month
of May when two samples were collected, and January when the Nest Lake
outlet was not sampled because of low flows. Sampling was begun in October,
1972, and was completed in September, 1973.
Through an interagency agreement, stream flow estimates for the year of
sampling and a “norrnalized or average year were provided by the Minnesota
District Office of the U.S. Geological Survey for the tributary sites nearest
the lake.
In this report, nutrient loads for sampled tributaries were determined
by using a modification of a U.S. Geological Survey computer program for
calculating stream loadings*. Nutrient loadings for unsampled “minor tribu-
taries and immediate drainage” (“ZZ” of U.S.G.S.) were estimated by using
the means of the nutrient loads, in lbs/mi 2 /year, in streams tributary to
nearby Big Stone Lake at stations 2709D-l, E-1, F-l, and G-l and multiplying
the means by the Green Lake ZZ area in mi 2 .
The operator of the Belgrade wastewater treatment plant provided
monthly effluent samples and corresponding flow data; however, the Village
of New London declined participation in the Survey and nutrient loads were
estimated at 2.5 lbs P and 7.5 lbs N/capita/year. Since Nest Lake, tribu-
tary to Green Lake, retained 56% of the total phosphorus load and 16% of
* See Working Paper No. 1.
-------
10
the total nitrogen load, the nutrient loads attributed to these point
sources are 44% of the phosphorus and 84% of the nitrogen measured or
estimated at the STP’s.
The loads attributed to the Nest Lake outlet are measured loads minus
the point-source loads.
The effluent of the City of Spicer wastewater treatment plant is
discharged to Woodcock Lake, and there is a high—water overflow to
Green Lake (Lang, 1972). The overflow was not sampled during the Survey
year, and the nutrient loads to Green Lake attributed to the City of
Spicer were estimated at 2.5 lbs P and 7.5 lbs N/capita/year; it was
assumed that Woodcock Lake had the same degree of nutrient retention
as Nest Lake and overflowed in March, April, and May of the sampling year.
A. Waste Sources:
1. Known municipal —
Pop. Mean Receiving
Name Served* Treatment Flow (mgd) Water
Belgrade 713 act. sludge 0.131 Middle Fork,
Crow River
New London 736 prim. 0.129** Middle Fork,
clarifier Crow River
Spicer 586 trickling 0.192 Woodcock Lake
filter to Green Lake
* 1970 Census.
** Beaton and McGuire, 1969.
t Lang, op. cit.
-------
11
2. Known industrial* -
Name
New London
Creamery Assoc.
Gordhammer ‘s
Food Mkt.
Farmers Coop.
Assoc.
Engwall Bros.
Locker, Spicer
Treatment
New London SIP
Belgrade STP
Belgrade SIP
septic tank &
soil absorb.
Mean
Flow (mgd )
Receiving
Water
(Crow River)
(Crow River)
(Crow River)
no discharge
* Beaton and McGuire, 1969.
-------
12
B. Annual Total Phosphorus Loading - Average Year:
1. Inputs -
lbs P/ % of
Source yr total
a. Tributaries (non-point load) —
Nest Lake outlet 1 ,230 27.4
b. Minor tributaries & immediate
drainage (non-point load) - 130 2.9
c. Known municipal -
Belgrade (indirect) 890 19.8
New London (indirect) 810 18.0
Spicer (indirect) 160 3.6
d. Septic tanks* - 430 9.6
e. Known industrial (to municipal STP’s) -
f. Direct precipitation** 840 18.7
Total 4,490 100.0
2. Outputs -
Lake outlet - Middle Fork,
Crow River 1 ,460
3. Net annual P accumulation - 3,030 pounds
* Estimated 650 dwellings, 1 camp, & 3 resorts on lakeshore (Beaton &
McGuire, 1969); see Working Paper No. 1.
** See Working Paper No. 1.
-------
13
C. Annual Total Nitrogen Loading - Average Year:
1 . Inputs —
lbs NI % of
Source yr total
a. Tributaries (non—point load) -
Nest Lake outlet 107,710 57.3
b. Minor tributaries & immediate
drainage (non-point load) — 2,440 1.3
c. Known municipal —
Belgrade (indirect) 4,120 2.2
New London (indirect) 4,640 2.5
Spicer (indirect) 920 0.5
d. Septic tanks* - 16,140 8.6
e. Known industrial (to municipal STP’s) —
f. Direct precipitation** - 52,080 27.6
Total 188,050 100.0
2. Outputs -
Lake outlet - Middle Fork,
Crow River 85,800
3. Net annual N accumulation - 102,250 pounds
* Estimated 650 dwellings, 1 camp, & 3 resorts on lakeshore (Beaton &
McGuire, 1969); see Working Paper No. 1.
** See Working Paper No. 1.
-------
14
D. Mean Annual J ’lon-point Nutrient Export by Subdrainage Area:
Tributary lbs P/mi 2 /yr lbs N/mi 2 /yr
Nest Lake outlet 10 876
E. Yearly Loading Rates:
In the following table, the existing phosphorus loading
rates are compared to those proposed by Vollenweider (in press).
Essentially, his “dangerous” rate is the rate at which the
receiving waters would become eutrophic or remain eutrophic;
his “permissible” rate is that which would result in the
receiving water remaining oligotrophic or becoming oligo-
trophic if morphometry permitted. A mesotrophic rate would
be considered one between “dangerous” and “permissible”.
Total Phosphorus Total Nitrogen
Units Total Accumulated Total Accumulated
1bs/acr /yr 0.8 0.6 34.8 18.9
grams/rn /yr 0.09 0.06 3.9 2.1
Vollenweider loading rates for phosphorus
(g/m 2 /yr) based on mean depth and mean
hydraulic retention time of Green Lake:
“Dangerous” (eutrophic rate) 0.26
“Permissible” (oligotrophic rate) 0.13
-------
15
V. LITERATURE REVIEWED
Beaton, Perry 1., and John F. McGuire, 1969. Report memorandum
on water quality of Green Lake, Kandiyohi County. MPCA,
Minneapolis.
Lang, Derald E., 1972. Report on operation of wastewater treatment
works at Spicer, June, 1972. MPCA, Minneapolis.
Schilling, Joel, 1974. Personal communication (lake map; P removal
at Belgrade, New London, and Spicer). MPCA, Minneapolis.
Vollenweider, Richard A., (in press). Input-output models. Schweiz.
A. Hydrol.
-------
VII. APPENDICES
APPENDIX A
TRIBUTARY FLOW DATA
-------
T”IBIITA Y FLOW INFOHMATION F0 H1N ES0TA
10/30/74
LA(F COOF ?7R?
G9EEN LAF C
TOTAL 094 1”JAC,F APEP OF LAP(E I1M.O0
1 1 .00 15.’O 17.00 26.90 11.90 97.50 $9.20 63.60 39.10 29.30 21.10 17.70 18.20 42.38
I?1.0t) 13.70 16.40 ?5.l10 t 4.6O $6.70 $0.50 56.60 33.90 26.00 18.30 15.10 15.80 37.63
15.00 43 7 45 2.3? 7.39 10.90 12.20 7.34 3.40 3.38 2.59 1.86 2.13 4.87
SUMMAPY
TOTAL D7AINAG€ APEA OF LA
-------
APPENDIX B
PHYSICAL and CHEMICAL DATA
-------
sT’)PEr ‘ ET 1EVAL F)ATF 74/1 1/
‘7’ 20I
4D 15 45.0 3Q6 55 47.0
‘i EFN LAI’
I INI’JESOTA
1 1E ALFS
211 1?02
0032 FEET DE°TH
01 ’
003W
3 1 177
0 1)094
00400
00410
00630
00610
00665
0fl 6
r)a c
TJ i r)ci-)T-,
wATF’
1O
T2A\JS •>
CI PLJCTVY
Pr-4
I ALK
N0 ? N03
NH3—N
p,-ios—ToT
p- os—’,js
P0M
or
T ?’-
SECC 11
Fj Lfl
CACO3
J—TOT L
TOTAL
TC
•)AY .FT
C-i’JT
‘ i(./I
IN(HFS
1IC OMH0
SU
MG/L
MG/L
MG/I
M6/L P
MC,/L P
7?/fl7/’L’
l 15 0000
I.)
1’.?
lOS
140
.30
175
0.070
0.040
0.015
0.011
15 IS 0’) IS
1 .C
14.0
340
7.90
1A 1
O.0’.0
0.010
0.C1-
0.010
15 15 O ’ )30
l7.)
.
450
P.Q0
244
0.110
0.150
0.1 38
0.720
7?/14/lj
IS 30 0000
)
340
.? 1 )
154
0.050
0.080
0.016
0.007
IS 4 1) 0004
?fl .5
7.L .
340
167
0.050
0.100
0.010
0.005
15 10 uOIS
‘0.4
7.
3R0
4 1.20
170
0.060
0.100
0.012
0.005
I’- 10 t’O’S
I9.
.4
340
8.05
170
0.060
0.130
0.012
0.004
IS 10 U’)lS
5.0
1 0
171
0.060
0.120
0.012
0.005
IS 10 0044
I’ .l
..0
4 O
7.80
175
(i.050
0.160
0.014
0.006
77/U)/2 ’
(7 11) “)00
l3
4 5
R.4c)
173
0.090
0.050
0.014
0. OOM
17 10 0004
7 l
124
172
0.090
0.030
0.020
0.010
17 11) 0)15
7.
...
325
8.4fl
171
0.090
0.030
0.020
0.012
17 10 0 ’ ) +(i
7.1
.S
124
H.4)
17?
0.090
0.030
0.015
0.006
‘)ATr
11Mw IFI-)T-1
3 ” I
CHL.-J- -1YL
F6 ’O”
OV
(_
TJ
L Y FF T
‘J,/L
72/07/0 ?
IS 15 0000
5.fJ
77/OM/1 (
IS 10 00)0
72/ 10/7 - ’
(7 10 0000
. 5
J VftLU I(’J(fl NJ TO dE I ‘ FPPD-
-------
STOPET FTPTEVAI OATI 7’.’l ’iu
27820?
4S 15 55.0 094 53 00.0
(,PEEN LAKE
27 MIN I JESOTA
I 1F’ ALES
3
i)A TF
FROM
TO
TIME r)F T9
0F
DAY FEET
77/O7/O 17 15 0000
17 iS 0075
7?/fl-4/11 16 00 0000
16 00 0004
16 00 0010
7?/I0/25 16 45 0000
16 45 0004
If. 45 0015
If’ 45 0030
If. 45 0050
211120?
0015 FEET DEPTI-I
0001k’
00300
00077
OQOQ4
00400
00410
00630
00610
00665
00666
ATEP
00
T A J5P
CNDUCTVY
P1-i
T ALK
N0?1.N03
Nl-43—M
PHOS—TOT
PHOS—0 15
TEMP
SECC’- 1 1
FIELD
CACO3
N—TOTAL
TOTAL
CENT
M(/L
INCHES
M1CI- ( MHO
SU
MG/L
MG/ I.
MG/L
MG/L P
MG/L P
13.?
104
3)0
6.30
175
0.030
0.010
0.014
0.006
7.8
90
350
340
8.00
8.25
174
165
0.040
0.100
0.010
0.130
0.030
0.015
0.012
0.013
7.4
340
8. 25
163
0.100
0.170
0.014
0.010
P . R
132
318
150
8.20
8.40
164
176
0.100
0.090
0.130
0.050
0.013
0.016
0.011
0.009
9.5
150
8.40
175
0.090
0.040
0.017
0.009
‘ .4
345
8.40
177
0.090
0.040
0.016
0.009
q .
345
8.30
178
0.090
0.040
0.015
0.008
11.2
360
8.30
176
0.100
0.050
0.015
0.009
72 • C.,
18.)
?0 •
?0 • 7
8.0
7. -
7•4
7•
1 I 7
C 1.? P L
A
4. IJ
4 • (1 J
rO r-
FR
To
72/07/0)
7?/04/11
7?/ I 0/?S
TI ’iF DEPTH
OF
LJAY FF T
17 15 0000
16 00 0000
16 45 0000
J VALUE KN0 N TO IN ERROP
-------
APPENDIX C
TRIBUTARY DATA
-------
STaPFT PFT !FVAl PATE 7 +/10/30
?1R?A1 L ?7’1?AI
‘ .5 1’- 00.0 oc’ . 5 uO.0
1)’)L, FOr K CPOw P1V
7.- HA 1CK
(i/ E J’ L ’ F
CO H’ Y 4 r -ffl E Er)GE uF LA’cE
11 PALFS d111204
0000 FEET DEPT-I
r 3) )0 ?5 00610 iu1)’ 71
DATE TIME DEPTH NO .NO3 TOT KJEL NHIN HOS—L)IS p HOSjUT
FROM OF —TOTAL TOTAL u T - O
TO FiAT FEET MG/L MG/L “iG/L 11(/L MG/I P
7?/1u/l5 11 4c 0.O5 0. 6o 0. 05P 0.005K o.oiq
72/1 1/03 1’. 10 ).110 0 . e0 0.05? 0.011 O.u11
7?/l?/0 10 30 0.140 0.750 0.024 0.005K 0.015
73/0?/04 11 30 0.1’.7 0. ’ 70 o .oB O. ’JlC J.015
71/01/101115 0.110 0.60( 1 0.020 1.U0 - K 0.015
71/04/1 O9?5 0 •Ø3 0.710 0.010 0.015
71/05/06 I I 00 0.060 0.078 Q .30’ K 0.020
71/05/IQ OR 40 0.0?7 O. ’f0 0.017 (‘.(h K 0.u?O
73/06/10 1 ) 31 0.0IO 0.600 O.02 0.(JuSr 0.01
71/07/1411 30 J.010 1.000 u.?73 G. 0 14 0.025
71/O /11 11 35 0.010K 0.670 0.032 0.00 0.020
71/09/0 ’ 70 25 C.01 ’ 7. ’0) 0.f’ lO (j. O 1Y O.0 0
K VALUF KNOWN TO R LESS
THAN INOTCATED
-------
STORET RETRIEVAL DATE 74/10/30
L527 eR1
45 14 30.0 094 56 00.0
NEST L /(,r EFN LK CONNECTION
27 7.5 NEW LONF)ON
1/Gk TEN LAIKE
Co H ’IY XINu 1.5 MI NNE OF SPICFR
1 IEPALES 2111204
4 0000 FEET DEPTH
72/10/15 11 30
72/11/03 13 55
72/12/09 10 ?0
71/01/06 11 45
73/02/04 11 15
73/03/10 13 00
73/04/14 09 30
71/05/06 10 30
73/05/19 0 25
73/06/10 10 30
71/07/14 11 00
71/08/11 11 15
73/09/06 20 5
0.093
0.020
( .078
0.066
0 • 126
0.230 0.900
0.025 ? .100
0.046 1.900
0.0 )5 0.760
0.020 1.000
3.500
0.010K 1.200
0.027 4.000
K VALUE KNOWN TO BE LESS
THAN INDICATED
DATE
FROM
TO
TIME DEPTH
OF
DAY FEET
0(1630
N02&N03
N—TOTAL
MG/L
00610
NrI l-N
TOTAL
MG/L
006?5
TOT KJEL
N
MC,/L
1 • 680
0 • 840
0,950
1 • 150
00671
PrIOSf)IS
o ?T-1O
MG/L P
00665
PHI) S — TOT
MG/I P
0.120
0.039
0.054
0.007
0.032
0.072
0.010
0.021
0.110
0.019
0.u25
0.220
0.017
0.045
0.023
0.013
0.037
0.005K
J.00
0.030
0.026
0.007
0.015
0.019
Q Ø )L.
0.045
0.012
0.007
0.035
).180
0.020
o.oio
0.033
0.017
0.045
0.370
0.017
0.055
------- |