U.S. ENVIRONMENTAL PROTECTION AGENCY
NATIONAL EUTROPHICATION SURVEY
WORKING PAPER SERIES
PACIFIC NORTHWEST ENVIRONMENTAL RESEARCH LABORATORY
An Associate Laboratory of the
NATIONAL ENVIRONMENTAL RESEARCH CENTER • CORVAUIS, OREGON
and
NATIONAL ENVIRONMENTAL RESEARCH CENTER - LAS VEGAS, NEVADA
-------
REPORT
ON
LAKE LE HOITE DIEU
DOUGLAS COUNTY
MINNESOTA
EPA REGION V
WORKING PAPER No, 106
WITH THE COOPERATION OF THE
MINNESOTA POLLUTION CONTROL AGENCY
AND THE
MINNESOTA NATIONAL GUARD
NOVEMBER, 1974
-------
CONTENTS
Pa9e
Foreword Ii
list of Minnesota Study Lakes iv, v
lake and Praina. e Area Map vi
Oi t. lO r iS
1 ( on 1 u I ons I
11. I ako and Pra inane P asin I Iiara torki i s
I 11 I ako Wafer ( iia 11 tv iinouary 4
1V. N if riont I oad inqc
V I if rafiir Roviewed
V I Ai irnd I (
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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 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 0 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)J, 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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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.
ACKNOWLEDGMENT
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. McGuire, 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.
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iv
NATIONAL EUTROPHICATION SURVEY
STUDY LAKES
STATE OF MINNESOTA
LAKE NAME COUNTY
Albert Lea Freeborn
Andrusia Beltrami
Badger Polk
Bartlett Koochiching
Bear Freeborn
Bemidji Beltrami
Big Stearns
Big Stone Big Stone, MN; Roberts,
Grant, SD
Birch Cass
Blackduck Beltrami
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 Homme Dieu Douglas
Lily Blue Earth
Little Grant
Lost St. Louis
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V
LAKE NAME COUNTY
Madison Blue Earth
Malniedal 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 Beltrami, Hubbard
Woodcock Kandiyohi
Zumbro Olmstead, Wabasha
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Map Locati
r
X03
X02
-4 -:
(
EXANDR IA
K
LAKE LE HOMME DIEU
® Tributary Sampling Site
X Lake Sampling Site
9
Direct Drainage Area Limits
t/2
Scale
1 Mi
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LAKE LE HOMME DIEU
STORET NO. 27B5
I. CONCLUSIONS
A. Trophic Condition:
Survey data indicate Lake Le Honime Dieu is eutrophic,
although water quality is relatively good. Of the 80 Minne-
sota lakes studied, only 11% had less mean total phosphorus,
only 6% had less mean dissolved phosphorus, and only 6% had
less algal assay control yield. However, 34% of the study
lakes had less mean inorganic nitrogen, 16% had greater
transparency, and 42% had less mean chlorophyll a. Marked
depression of dissolved oxygen with depth was noted at all
stations in July, and oxygen depletion at station 1 and near-
depletion at station 2 occurred in August.
A small area of the lake was chemically treated for the
control of rooted aquatic vegetation in 1971 (Bonnema and
Johnson, 1972).
B. Rate-Limiting Nutrient:
The results of the algal assay show the lake was phosphorus
limited at the time the sample was collected.
The lake data indicate phosphorus limitation in September
but nitrogen limitation in July.
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2
C. Nutrient Controllability:
1. Point sources--The elimination of the Alexandria Main
plant discharge to Upper Lake Winona should result in a reduc-
tion of the present mesotrophic loading rate to Lake Le Homme
Dieu (see “Report on Lake Winona”, Working Paper No. 135, and
page 13 of this report).
2. Non-point sources (see page 13)--The non-point nutrient
exports to Lake Le Home Dieu were exceptionally low because of
nutrient entrapment in the water bodies tributary to this lake.
In all, non-point sources are estimated to have contributed
about 43% of the total phosphorus load and about 75% of the total
nitrogen load to the lake during the sampling year.
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II. LAKE AND DRAINAGE BASIN CHARCTERISTICS
A. Lake Morphometry :
1. Surface area: 1,744 acres.
2. Mean depth: 21 feet.
3. Maximum depth: 85 feet.
4. Volume: 36,624 acre/feet.
5. Mean hydraulic retention time: 7.9 years.
B. Tributary and Outlet:
(See Appendix A for flow data)
1. Tributaries -
Name Drainage area* Mean flow*
Lake Geneva outlet 29.2 mi2 4.5 cfs
o
Krueger's Slough outlet 0.8 mi 0.1 cfs
Minor tributaries & 2
immediate drainage - 9.6 mi 1.8 cfs
Totals 39.6 mi2 6.4 cfs
2. Outlet -
Lake Carlos inlet 42.3 mi2** 6.4 cfs
C. Precipitation***:
1. Year of sampling: 22.9 inches.
2. Mean annual: 22.6 inches.
t Anonymous, 1969.
* 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.
** Includes area of lake.
*** See Working Paper No. 1, "Survey Methods".
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4
III. LAKE WATER QUALITY SUMMARY
Lake Le Homme Dieu 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 three 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 three 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 46 feet at station 1, 42 feet at station 2, and 45 feet at
station 3.
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.
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5
A. Physical and chemical characteristics:
FALL VALUES
(10/28/7 2)
Parameter Minimum Mean Median Maximum
Temperature (Cent.) 6.0 6.2 6.1 6.4
Dissolved oxygen (mg/i) 9.4 10.3 10.3 11.2
Conductivity (pmhos) 290 299 300 310
pH (units) 7.7 7.9 8.0 8.0
Alkalinity (mg/i) 162 170 168 216
Total P (mg/i) 0.014 0.017 0.016 0.034
Dissolved P (mg/i) 0.004 0.008 0.008 0.010
NO + NO (mg/i) 0.020 0.076 0.080 0.100
AJonia mg/1) 0.070 0.092 0.080 0.140
ALL VALUES
Secchi disc (inches)
48 91
72 144
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6
B. Biological characteristics:
1. Phytoplankton -
Sampling Dominant Number
Date Genera per ml
07/06/72 1. Anabaena 3,261
2. Microcystis 2,319
3. Dinobryon 1,413
4. Cyclotella 254
5. Scenedesmus 145
Other genera 796
Total 8,188
09/02/72 1. Microcystis 4,493
2. Merismopedia 906
3. Chroococcus 833
4. Lyngbya 580
5. Dinobryon 362
Other genera 761
Total 7,935
10/28/72 1. Flagellates 2,264
2. Dinobryon 1 ,585
3. Scenedesmus 1 ,472
4. Pediastrum 981
5. Anabaena 377
Other genera 1 ,396
Total 8,075
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7
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
Date ________ _______________
07/06/ 72
02
13.7
03
6.9
10/28/72
01
02
03
26.6
14.7
5.3
C. Limiting Nutrient Study:
1. Autoclaved, filtered, and nutrient spiked -
Ortho P Inorganic N
___________ Conc. (mg/l) Conc. (mg/i )
0.004 0.139
0.010 0.139
0.016 0.139
0.028 0.139
0.064 0.139
0.064 10.139
0.004 10.139
2. Discussion —
The control yield of the assay alga, Selenastrum capri-
cornutum , indicates that the potential primary productivity
of Lake Le Homme Dieu was low at the time the sample was
collected. Also, the increasing yields with increasing
Station
Number
01
02
03
Chlorophyll a
(jig/i) —
5.3
6.4
4.3
Spike (mg/i )
Control
0.006 P
0.012 P
0.024 P
0.060 P
0.060 P + 10.0 N
10.0 N
Maximum yield
Jl -dry wt. )
0.2
2.4
3.6
3.4
3.7
34.3
0.2
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8
increments of orthophosphorus (to about 0.020 mg/i) show
that the lake was phosphorus limited at the time the sample
was collected. Note that the addition of only nitrogen pro-
duced a yield not significantly different than the control
yield.
The lake data indicate phosphorus limitation in September
as well (N/P ratio = 30/1) but nitrogen limitation in July
(N/P ratio = 10/i).
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9
IV. NUTRIENT LOADINGS
(See Appendix C for all 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 months
of April and May, when two samples were collected, and the colder months
when ice cover and low flows prevented sampling. 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 “normalized” 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
tributaries and immediate drainage” (“ZZ” of U.S.G.S.) were estimated by
using the nutrient loads, in lbs/mi 2 /year, in Krueger’s Slough outlet at
station B-i and multiplying by the ZZ area in mi 2 .
The operator of the Alexandria Main wastewater treatment plant provided
monthly effluent samples and corresponding flow data. The Alexandria
plant discharges to Upper Lake Winona and thence to Lake Agnes to Lake
Henry to a marsh area and, finally, to Lake Le Homme Dieu. Therefore,
in the following loading tables, it is assumed that 95% of the Alexandria
* See Working Paper No. 1.
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10
Main plant nutrient loads do not reach Lake Le Homme Dieu (it is known
that the outflow of Lake Henry is intermittant*, but the duration of
overflow periods is not known). The “at-the-plant” loads measured for
the sampling year were 14,920 lbs P and 55,810 lbs N.
A. Waste Sources:
1. Known municipal -
Pop. Mean Receiving
Name Served Treatment Flow (mgd) Water
Alexandria 5,090 trickling 0.664 Upper Lake
Main filter Winona
2. Known industrial* -
Mean Receiving
Name Treatment Flow (mgd) Water
Land-0—Lakes (cooling water) ? Upper Lake
Creamery, Alexandria Winona
* Bishop and McGuire, 1968.
t Estimated 73% of Alexandria population (1970 Census) served by this
plant.
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11
B. Annual Total Phosphorus Loading - Average Year:
1. Inputs -
lbsP/ %of
Source yr total
a. Tributaries (non-point load) -
Lake Geneva outlet 340 19.8
Krueger’s Slough outlet 10 0.6
b. Minor tributaries & immediate
drainage (non-point load) — 120 7.0
c. Known municipal -
Alexandria (Main Plant) 750 43.6
d. Septic tanks* - 230 13.4
e. Known industrial -
Land-0-Lakes Creamery -
f. Direct precipitation** - 270 15.6
Total 1,720 100.0
2. Outputs -
Lake outlet - Lake Carlos inlet 370
3. Net annual P accumulation - 1,350 pounds
* Estimated 371 dwellings on shoreline; see Working Paper No. 1.
** See Working Paper No. 1.
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12
C. Annual Total Nitrogen Loading - Average Year:
1. Inputs -
lbs NI % of
Source yr total
a. Tributaries (non—point load) -
Lake Geneva outlet 14,750 31.4
Krueger’s Slough outlet 300 0.6
b. Minor tributaries & immediate
drainage (non-point load) - 3,600 7.7
c. Known municipal -
Alexandria (Main Plant) 2,790 5.9
d. Septic tanks* - 8,720 18.6
e. Known industrial -
Land-0-Lakes Creamery ? -
f. Direct precipitation** - 16,800 35.8
Total 46,960 100.0
2. Outputs -
Lake outlet - Lake Carlos inlet 17,860
3. Net annual N accumulation - 29,100 pounds
* Estimated 371 dwellings on shoreline; see Working Paper No. 1.
** See Working Paper No. 1.
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13
D. Mean Annual Non-point Nutrient Export by Subdrainage Area:
Tributary lbs P/mi 2 /yr lbs N/mi 2 /yr
Lake Geneva outlet 12 505
Krueger’s Slough outlet 12 375
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
lbs/acre/yr 1.1 0.9 29.9 19.7
grams/m’/yr 0.12 0.10 3.4 2.2
Vollenweider loading rates for phosphorus
(g/m 2 /yr) based on mean depth and mean
hydraulic retention time of Lake Le Homme Dieu:
“Dangerous” (eutrophic rate) 0.18
“Permissible” (oligotrophic rate) 0.09
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14
V. LITERATURE REVIEWED
Anonymous, 1969. Report on water quality investigation of Long
Prairie River and lakes Carlos, Le Homme Dieu, and Osakis.
MPCA, Minneapolis.
Bishop, Kyle M., and John F. McGuire, 1968. Report on pollution
of lakes Winona, Agnes and Henry. MPCA, Minneapolis.
Bonnema, Kenneth, and William G. Johnson, 1972. Control of aquatic
vegetation, algae, leeches, and swimmer’s itch in 1971. MN
Dept. of Nat. Resources, Minneapolis.
Vollenweider, Richard A., (in press). Input-output models. Schwiez.
A. Hydrol.
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15
VII. APPENDICES
APPENDIX A
TRIBUTARY FLOW DATA
-------
T”TiJTA’- Y FLOI. 1jFOO 1Ifl J FO Mp NLSOTA
10/30/74
LA< Cfl1 ?7 ,
L’ ’ LV .-. MFOI.-,
TOTAL Af iAC, A4FA or LAf h
T OT AL t A I NA (,F A1. A OF LAKE =
a S ) —()PA I AC L AIJEAS
I-WA ‘J 1O iTHLY FLO c AN I )A ILY FL t.S
r. I-1JTA.’i 4ON1—I YJ 0
lEos FL 1 ’ . AY
I-Low DAY
FLOW DAY FLOW
SIJIn—D - A1 At
T Trl1JTA Y APl A
‘4A ‘lay
ND MALIZED FLOWS
JUN JUL AUG
?7 - o0A!
? 1 .. ’ ’
0.
3 ,
‘.-‘
3.S
1’. 9
7.1.1
9.7?
5.29
3.09
1.97
4.00
3.01
1.09
4.47
?70S- I
‘). fl
O.fl
n.: I
0.30
0.?’
0.’5
0.15
0.O
0.07
0.12
0.08
0.03
0.12
?7 CI
42.30
0. S
•. ?
6.5
I-.
1l.3
13.M0
F.
4.56
2.77
5.R5
4.48
1.46
6.41
?7 — /7
12.1)
1.1.0
S.u’
1.21.
‘ .. 13
?.20
1.?)
0.87
1.63
1.14
0.50
1.82
oTF * T. II I Cl=i -1CI
SEP OCT NOV DEC MEAN
SUMM A1.Y
1.?.33
TOTAL
FLOW
IN
76.81
4?.3 0
TOTAL
FLOW
OUT
=
76.80
?7 - lSt 1I
10
72
IL. 0
1’.
11.70
I I
7’
Q., 1
iS
. 1.1.0
I’
7’
.
15
‘..S’)
1
7 l
1.11
‘
13
3 .F”
71
1 .A0
3
73
1 -’.30
13
1 4.Or
6
7 °
IS.71 1
5
70.00
3
ii
1 ’. 0
3
15.00
1.
F3
3,
11.00
7
73
6.1 .0
11
f.?1
0
“ ‘
3.°7
?1
.!7
7
1.J-
1
2.5k
?7 l Sr l I
I I
3
17
I
7
1
1.
c
,
7
.
(4
7
7 ’
77
73
71
74
7
71
(1
71
73
73
0.13
0.’6
0.11
0. S
L. ‘ S
.‘S
0.37
0.1A
0. ”
Ii.I
3.10
(;.Il
14
1-,
IS
?l
Ii
3
-
II
)1
1
0.4J
0. 0
0.I0
0.05
j• 10
j•5I)
0.40
0.1C
O. lr
•i.13
3•qQ
15.00
12.00
0.40
0 • 30
11
-------
TRI,3UTa Y FLOW INFOI” MATION FOP MINNESOTA
10/30/74
L F COF)E 27H5
LAKE LE HOMME PIFU
MEAN MONTHLY FLOWS oN’) DAILY FLOWS
MONTH YEAR
MEAN FLOW
IP IBLJTAPY
?7 5C 1
?7957?
DAY FLOW PAY FLOW DAY FLOW
10
72
17. ”O
14
19.00
11
72
15.10
15
15.00
17
72
7.01
15
6.70
1
73
2.54
2
73
5.46
?1
2.50
3
73
23.00
13
20.00
4
73
25.70
5
32.00
1
24.00
5
73
21.00
3
24.00
17
20.00
f
73
1 .80
8
18.00
i
13
10.30
11
9.95
8
73
9.67
23
8.51
9
71
4.85
30
3.98
10
72
4.43
14
4.70
11
72
3.47
15
3.40
1
72
2.15
15
2.10
1
73
0.83
2
73
1.54
21
0.80
3
73
6.30
13
5.40
4
73
6.14
5
7.70
19
5.80
5
73
5.35
3
6.20
17
5.10
)
73
4.21
8
4.80
7
73
?.66
Ii
2.58
8
73
2.30
23
2.02
9
73
1.37
18
1.12
30
1.12
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APPENDIX B
PHYSICAL and CHEMICAL DATA
-------
STDRET PETRIEVAL DATE 74/10/10
278501
‘.5 55 ‘0.0 095 21 55.0
LE HOMME DIEU
27 MINNESOTA
1 LEPALES
3
2111202
0042 FEET DEPTH
OAT E
F•f. OM
TO
72/0 7/0 b
72109/07
77/10/24
TIME OE°TH
OF
OAY FEET
12 42 0000
lb 05 0000
09 ic 0000
3’21 7
C,- LRPHYL
A
IJ1 /L
5.3J
4. 3J
00010
)03OO
00071
00094
00400
00410
00630
00610
00665
00666
DATE
TIME
l)EPT’-l
WATER
DO
TPANSP
CNOUCTVY
PH
T
ALK
N02&N03
NH3-N
PHOS—TOT
PHOS—DIS
FROM
OF
TEMP
SECCHI
FIELD
CACO3
N—TOTAL
TOTAL
TO
DAY
FEET
CENT
AC /L
INCHES
HICRONHO
SU
IIG/L
MG/L
MG/L
HGIL P
MG/L P
72/07/0€
12 42 0000
44
305
8.50
172
0.060
0.070
0.020
0.009
1 42 0004
21.0
Q•5
305
8.50
175
0.050
0.050
0.012
0.007
I 4? 0015
19.4
9.7
325
7.80
188
0.040
0.060
0.024
0.011
12 42 0020
11.0
1? 4? 002?
13.0
6.2
340
7.50
164
0.060
0.030
0.036
0.014
1? 42 003’
9.0
2.4
340
7.50
187
0.050
0.050
0.044
0.014
77/09/02
16 05 0000
72
302
8.50
144
0.140
0.170
0.015
0.012
16 05 000’
19.6
9.1
100
8.60
143
0.150
0.160
0.013
0.012
16 05 0015
19.?
4.2
290
8.55
144
0.150
0.160
0.017
0.010
lb OS 0022
18.2
2.6
315
8.05
146
0.140
0.140
0.016
0.014
16 05 0030
11.1
0.3
360
7.40
187
0.120
0.310
0.022
0.009
16 05 0038
9.3
0.0
358
7.35
186
0.160
0.680
0.015
0.011
16 05 0046
7.9
0.0
370
7.30
190
0.120
1.170
0.028
0.018
77/10/24
09 35 0000
144
290
8.00
165
0.060
0.130
0.014
0.009
09 35 0004
6.4
10.4
300
8.00
170
0.050
0.120
0.015
0.008
09 35 0015
6.4
10.2
300
8.00
169
0.050
0.130
0.015
0.008
09 15 0025
6.4
9.4
300
8.00
173
0.060
0.140
0.015
0.005
09 35 0032
6.4
11.?
300
8.00
216
0.020
0.100
0.017
0.007
J VALUF KNOWN TO BE IN ERROR
-------
STOPET RETRIEVAL DATE 74/10/30
27 3502
45 55 22.0 095 20 27.0
LE HOMME DIEIJ
27 MINNESOTA
11EPALES 2111202
3 0040 FEET DEPTH
00010
00100
00077
00094
00400
00410
00630
00610
00665
00666
DATF
TIME DEPTH
WATER
DO
TRANSP
CNDIJCTVY
PH
1 ALK
N02&N03
Nf-43—N
PHOS—TOT
PI-4OS—DIS
FROM
OF
TEMP
SECCHI
FIELD
CACO3
N—TOTAL
TOTAL
TO
DAY FEET
CFNT
MG/L
INCHES
MICROMI-sO
SU
MG/L
MG/L
MG/L
H6/L P
HG/L P
72/07/07
15 30 0000
72
320
8.50
15 10 0004
21.5
11.8
164
0.030
0.050
0.022
0.009
15 30 0015
18.0
9.4
3?0
8.40
175
0.040
0.020
0.023
0.011
15 30 0027
17.0
F,.2
345
8.00
175
0.040
0.010
0.030
0.011
15 10 0036
8.5
2.2
355
7.40
182
0.070
0.070
0.031
0.014
72/09/0 ?
16 35 0000
72
305
H.53
145
0.120
0.140
0.023
0.014
16 35 0004
19.5
9.0
300
8.55
144
0.100
0.120
0.022
0.012
16 35 0015
19.1
.2
302
8.50
144
0.080
0.130
0.021
0.011
16 35 0022
19.1
7.2
300
8. 50
144
0.080
0.130
0.018
0.014
16 35 0010
15.1
0.3
320
7.58
170
0.100
0.140
0.016
0.010
16 15 00’.?
9.2
0.3
360
7.40
180
0.150
0.750
0.054
0.028
72/10/28
10 70 0000
136
300
7.90
167
0.090
0.080
0.015
0.008
10 ?0 0004
6.2
10.8
295
8.00
162
0.080
0.080
0.020
0.010
10 ?0 0015
6.2
9.4
290
8.00
163
0.080
0.080
0.014
0.009
10 20 0025
6.1
10.3
295
8.00
164
0.080
0.070
0.018
0.004
10 ?0 0035
6.1
100
8.00
165
0.090
0.080
0.018
0.008
DATE
TIME DE°TH
32217
CHLPPHYL
FROM
OF
A
TO
DAY FEET
IJG/L
72/07/07
15 30 0000
2 8.8J
77/09/07
16 15 0000
13.7J
77/10/2
10 20 0000
6.9J
J VALUE KNOWN TO BE IN ERROI
-------
STOPET PEIQIEVAL DATE 74/l0/ 0
?7H5 03
45 56 06.0 095 20 40.0
LE ‘- OMME OIEU
27 MINNESOTA
I 1EPALES
3
2111202
0034 FEET DEPTH
DATF
TO
72/07/07
72/09/0 ?
7?/ J/2fl
TIME I)FPT I
OF
DAY FEET
16 00 0000
17 05 0000
10 o 0000
1 1 7
ChL PHYL
A
‘K,/L
?6 •
14. 7J
5. 3J
00010
00100
0)077
00094
00400
00410
00630
00610
00665
00666
DATE
TIVF
DEPTP-l
wATF ’
00
T ANSP
CNDUCTVY
PH
1 AL
N024NJ03
N83—N
PrIOS—TOT
PriOS—DIS
FPOM
OF
TEUP
SECCHI
FIELD
CACO3
N—TOTAL
TOTAL
TO
DAY
FEET
CEMT
M4/L
INCHES
MICROMHO
SU
MG/L
MG/L
MG/L
MG/L P
MG/L P
72/07/07
16 00 0000
76
125
8.40
164
0.060
0.060
0.016
0.008
16 00 0004
21.6
1?.6
162
0.050
0.230
0.019
0.009
16 00 0015
20.0
9.8
360
8.20
169
0.060
0.070
0.016
0.014
16 00 0020
19.0
16 00 002?
18.5
5.8
335
8.20
184
0.040
0.080
0.026
0.010
16 00 003’
16.5
0.4
340
7.60
164
0.040
0.020
0.047
0.010
72/09/02
17 05 0000
60
309
8.6’)
142
0.130
0.150
0.022
0.010
17 05 0004
20.3
10.1
320
8.60
142
0.140
0.150
0.023
0.015
Ii 05 0015
IQ.S
7.3
300
8.50
142
0.120
0.150
0.022
0.011
17 05 0027
19.3
6.5
305
8.40
144
0.120
0.140
0.022
0.013
17 05 00’9
19.
6.7
105
8.40
143
0.080
0.150
0.022
0.012
7?/10/2P
10 50 0000
140
310
7.70
166
0.100
0.080
0.015
0.007
10 50 0004
6.0
10.5
300
7.90
169
0.090
0.080
0.016
0.007
10 60 0fl15
6.0
300
7.90
168
0.080
0.070
0.016
0.008
10 50 0075
6.0
h.3
300
7.90
170
0.090
0.080
0.020
0.008
10 0 0035
6.0
lfl.!
300
7.90
171
0.100
0.080
0.017
0.008
10 50 0045
6.0
10.3
300
8.00
167
0.090
0.080
0.034
0.007
J VALUE KNOWN TO BE [ ‘ ERRO4
-------
APPENDIX C
TRIBUTARY and WASTEWATER
TREATMENT PLANT DATA
-------
STO FT PFTRTFVAL DATE: 74/1(1/30
795A1 LS27’35A1
4 j 55 00.0 095 20 00.0
LK LL HOP4ME DIEU/LK GENEVA CONN
27 7.5 ALEXANI)RIA E
I/LAKE LE HOMME DIEU
ST HWY 2 8’ DG 2 MI NE OF ALEXANDRIA
11EPALES 2111204
4 0000 FEET DEPTH
1067S 00610 00671 00665
DATF TIMF DF TH ‘JO? .NO3 TOT KJFL P-f3-N PHOS—DIS PHOS—TOT
FPOM OF J—TOT L N TOTAL URT f0
TO DAY FRET /L lG/L lG/L MG/L P MG/L P
7?/10/14 11 15 0.075 O. gO 3.066 0.006 0.041
7?/1I/1 15 10 0.120 3.600 3.290 0.017 0.036
71/02/21 12 15 0.07’ 0.795 0.05? 0.005K 0.030
71/01/13 IS 4(1 0.1 ’0 0.R40 0.147 0.011 0.025
71/04/05 15 iS 0.0’-6 ?.flOC 0.033 0.005K 0.030
71/04/1Q 15 40 0.013 3.100 0.053 0.012 0.0M5
71/05/01 15 30 0.017 0.740 fl.O OR 0.006 0.030
71/05/17 15 £.Ø i.OIOK 1.000 0.0Le 0.OOP 0.040
71/06/OP 11 30 .010K 0.540 0.005K 0.005K 0.020
71/07/11 15 20 3.01! O . MO 0.04R 0.012 0.025
7 1/0 /73 r o1y .100 0.370 0.015 0.050
71/09/1 !5 50 &.0I’i( 1.200 0.054 0.005K 0.0’S
K VALUE PcNO N TO BE LESS
THAN INDICATED
-------
STOPET ETRTEVAL DATE 74/Li/JO
27H5B1 LS27B5 1
45 56 30.0 095 20 00.0
OUTLET OF KPUEGE S SLOUGH
27 7.5 ALEXANDRIA E
1/LAKE LE HOMME DIEIJ
Co HWY 20 XINc, 2.75 MI SW OF CARLOS
IIEPALES 2111204
4 0000 FEET DEPTH
J 30 (O’-.25 d 0 610 0O€ 7) 00665
DATE TI 1E DEPTH ‘iO’ NO3 TOT KJFL ‘ J13—N PHOS—DIS PHOS—TOT
F OtA OF —TflTAL N TOTAL OPTHO
TO flAy FF T rlG/L Mr/L MG/L MG/L P MG/L P
7?/10/14 I I 05 ).05’ 0.H00 1.060 0.005K 0.015
72/11/IS 1515 ‘.0 l 0.660 0.03 0.005 u. OOR
7?/1?/15 11 45 O.04 0 .Q4 0 0.056 0.005K 0.013
71/03/1 1 45 ). 027 I. ’0) 0.550 0.009 0.055
71/04/OS 15 00 0.011 7.310 0.063 0.005K 0.0?0
71/04/1° 15 20 .0’3 1.540 0.095 0,005K 0.020
71/05/01 15 75 :.o 1i 0.630 0.008 0.006 0.015
71/05/1 1510 .O1 )K O.7Q(’ 0.OOSrc 0.00K 0.010
73/O6/0 11 25 3.01 c 0.7?0 L.04 0.005K 0.022
71/07/11 15 10 1.QPO 0.064 0.01? 0.030
71/9 i’23 ).017 o. ?o O.0 ’0 0.007 0.035
71/09/1 1515 0.010K 1.P9 0 0.075 0.00 5K 0.015
K VALUE KNOWN TO E LESS
THAN INDICATED
-------
5TO ET PETPIEVAL (lATE 74/10/30
0)630
PATE TIME r) P1I-1 • O2 NO3
FROM OF ‘i-TOTAL
TO PAY FEET
73/02/01 10 00
CP (1) —
73/02/01 15 00
71/01/01 10 0 0
CP IT) —
71/03/01 15 00
7 ’l/0 /01 tO h0
CP IT) —
71/04/01 IS 00
73/05/01 10 0
CP IT) —
73/05/01 15 00
71/06/04 10 Mo
CP (TI —
71/06/04 15 OC
71/OR/OP I D 0
C° IT) —
73/O /0I N 00
71/09/06 10 30
71/10/01 10 00
CP (1) —
71/10/01 15 00
71/1l/0 10 00
CP (TI -
73/1l/0 [ 5 00
73/12/0? 10 00
CP IT) —
71/12/07 [ 4 00
74/01/0’. 10 00
(‘P (TI —
74/01/04 14 01
74/02/07 10 00
C’ I TI —
27 S51 TF27B551
45 53 00.0 095 22 00.0
ALEXANDRIA
27 7.5 E ALEXANDRIA
1/LANE LE 1OUME DIU
U JKN0WN
I 1EPALES
4
P006973
2141204
0000 FEET DEPTH
t l(,/L
00675
TOT KJFL
N
G/L
00610
NH3— ? ’
TOTAL
IAG/L
00671
PHOS—DIS
ORTHO
MC,/L P
PROS—TOT
.iG/L
FLOW
RATE
INST MGD
CONDUIT
FLOW—HGO
MONTHLY
7.100
?.000
4.P00
5.100
7.900
0.662
0.658
11.300
5.200
0.570
4.100
4.100
0.69A
0.623
3.70’
74.fl00
5.?O0
4.300
7.500
0.640
0.623
1.600
19.000
7.100
5.500
6. 500
0.698
0.677
.400
16.000
0. 540
5.750
6.200
0.749
0.718
6.500
3.OOO
1.900
4.350
5.900
0.749
0.708
7.300
20.700
6.PO0
0.691
0.694
l .4OO
4.600
0.?90
Q.6 00
9.900
0.640
0.664
4.500
1Y.000
17.000
4.400
6.050
0.749
0.645
5.9)0
‘Q.uO(’
13.000
4.400
10.500
0.654
0.648
I0.lOfi
‘2.000
5.700
8.600
9. 50
0.691
0.673
74/02/07 14 00
h .90Q 26.500 6.3Sf) 6.300 8.000 0.619 0.673
------- |