U.S. ENVIRONMENTAL PROTECTION AGENCY
NATIONAL EUTROPHICATION SURVEY
WORKING PAPER SERIES
REPORT
ON
LAKEUMOURE
UMOURE COUNTY
NORTH DAmiA
EPA REGION VI11
WORKING PAPER No, 571
CORVALLIS ENVIRONMENTAL RESEARCH LABORATORY - CORVALLIS, OREGON
and
ENVIRONMENTAL MONITORING & SUPPORT LABORATORY - LAS VEGAS, NEVADA
^TG.P.O. 699-440
-------
REPORT
ON
LAKE LATOURE
LdOJRECQUNIY
NORTH DAKOTA
EPA REGION VI11
WORKING PAPER No, 571
WITH THE COOPERATION OF THE
NORTH DAKOTA STATE DEPARTMENT OF HEALTH
AND THE
NORTH DAKOTA NATIONAL GUARD
OCTOBER, 1976
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CONTENTS
Page
Foreword 11
List of North Dakota Study Lakes and Reservoirs 1v
Lake and Drainage Area Maps v, vi
Sections
I. Conclusions 1
II. Lake and Drainage Basin Characteristics 3
III. Lake Water Quality Summary 4
IV. Nutrient Loadings 8
V. Literature Reviewed 12
VI. Appendices ^
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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 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)], 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.
-------
m
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 North Dakota State Depart-
ment of Health for professional involvement, to the North Dakota
National Guard for conducting the tributary sampling phase of the
Survey, and to those North Dakota wastewater treatment plant oper-
ators who voluntarily provided effluent samples and flow data.
Norman L. Peterson, Director, and the staff of the Division
of Water Supply and Pollution Control of the Department of Health,
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 LaClair A. Mel house, the Adjutant General of
North Dakota, and Project Officer Colonel Irvin M. Sande, who
directed the volunteer efforts of the North Dakota National
Guardsmen, are also gratefully acknowledged for their assistance
to the Survey.
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IV
NATIONAL EUTROPHICATION SURVEY
STUDY LAKES AND RESERVOIRS
STATE OF NORTH DAKOTA
NAME COUNTY
Ashtabula Barnes, Griggs
Audubon McLean
Brush McLean
Darling Renville, Ward
Devils Benson, Ramsey
Jamestown Stutsman
LaMoure LaMoure
Matejcek Walsh
Metigoshe Bottineau
Pelican Bottineau
Sakakawea Dunn, McKenzie,
McLean, Mercer,
Mountrail, Wil-
liams
Spiritwood Stutsman
Sweet Briar Morton
Whitman Nelson, Walsh
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I
98M9
I
98*18
I
98*17'
98*16
r
r
.
I
\
Nevermore
Lake
N. Dak.
Map Location
46-19 —
LAKE La MOURE
® Tributary Sampling Site
X Lake Sampling Site
1 Km.
j
Scale
dam
46'18—
\
-------
f
— 46*30'
— 46*15'
^ .Jud
"7"'^-
'"" /~
/••
V
Dersem "^ ••
Medberry
LAKE La MOURE
® Tributary Sampling Site
X Lake Sampling Site
10
is Km.
2
Scale
6 a Mi.
N. Dak.
Map Location
LAKE
LA MOURE
99*00'
I
98*45'
98'30'
98*15'
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LAKE LaMOURE
STORE! NO. 3807
I. CONCLUSIONS
A. Trophic Condition:
Survey data indicate that Lake LaMoure is eutrophic. It
ranked twelfth in overall trophic quality when the 14 North
Dakota lakes sampled in 1974 were compared using a combination
of six lake parameters*. Twelve of the lakes had less median
total phosphorus, dissolved orthophosphorus, and inorganic
nitrogen; six had less mean chlorophyll a_; and four had greater
mean Secchi disc transparency. Marked depression or depletion
of dissolved oxygen with depth occurred at sampling station 1
in April and July.
Survey limnologists reported algal blooms and abundant
submerged macrophytes in July and September.
B. Rate-Limiting Nutrient:
The algal assay results indicate that the lake was nitrogen
limited in September. The lake data indicate nitrogen limita-
tion at all sampling times.
C. Nutrient Controllability:
1. Point sources—No known point sources impacted Lake
LaMoure during the sampling year.
2. Non-point sources—Non-point sources contributed the
* See Appendix A.
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2
entire phosphorus loading to the lake during the sampling year.
Cottonwood Creek was the major source and contributed about 93%
of the phosphorus loading. Minor tributaries and immediate
drainage contributed an estimated 6% of the loading.
The estimated phosphorus loading of 1.35 g/m2/year is over
four times that proposed by Vollenweider (Vollenweider and Dil-
lon, 1974) as a eutrophic loading (see page 11). A large reduc-
tion in this loading would be necessary to significantly improve
the trophic condition of the lake. However, since much of the
phosphorus load is the result of agricultural practices (Peter-
son, 1974), this may be difficult to achieve.
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II. LAKE AND DRAINAGE BASIN CHARACTERISTICS1"
,t..li
A. Lake Morphometry :
1. Surface area: 2.0 kilometers2.
2. Mean depth: 5.0 meters.
3. Maximum depth: 12.2 meters.
4. Volume: 9.962 x 106 m3.
5. Mean hydraulic retention time: 1.9 years (based on outflow)
B. Tributary and Outlet:
(See Appendix C for flow data)
1. Tributaries -
Drainage Mean flow
Name area (Jon2)* (m3/sec)*
Cottonwood Creek 334.1 0.171
Minor tributaries &
immediate drainage - 21.3 0.011
Totals 355.4 0.182
2. Outlet -
Cottonwood Creek 357.4** 0.165
C. Precipitation***:
1. Year of sampling: 66.5 centimeters.
2. Mean annual: 53.5 centimeters.
t Table of metric conversions—Appendix B.
tt Hoetzer, 1976.
* For limits of accuracy, see Working Paper No. 175, "...Survey Methods,
1973-1976".
** Includes area of lake.
*** See Working Paper No. 175.
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4
III. LAKE WATER QUALITY SUMMARY
Lake LaMoure was sampled three times during the open-water season
of 1974 by means of a pontoon-equipped Huey helicopter. Except for
the first time, samples for physical and chemical parameters were
collected from two or more depths at two stations on the lake (see
map, page v). During each visit, a single depth-integrated (4.6 m
or near bottom to surface) sample was composited from the stations
for phytoplankton identification and enumeration; and during the last
visit, a single 18.9-liter depth-integrated sample was composited
for algal assays. Also each time, a depth-integrated sample was col-
lected from each of the stations for chlorophyll a, analysis. The
maximum depths sampled were 6.7 meters at station 1 and 0.9 meters
at station 2.
The sampling results are presented in full in Appendix D and are
summarized in the following table.
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PARAMETER
TEMP (C)
DISS OXY (MG/L)
CNOCTVY (MCROMO)
PH (STAND UNITS)
TOT ALK (MG/L)
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 ( 4/29/74)
1 SITES
RANGE MEAN MEDIAN
14.0 - 14.0 14.0 14.0
7.6 - 8.0 7.8 7.B
333. - 335. 334. 334.
7.8 - 7.8 7.8 7.8
128. - 132. 130. 131.
0.129 - 0.147 0.136 0.131
0.032 - 0.035 0.033 0.03J
0.020 - 0.180 0.087 0.060
0.030 - 0.060 0.043 0.040
1.400 - 1.600 1.500 1.500
0.050 - 0.240 0.130 0.100
1.460 - 1.780 1.587 1.520
8.6 - 8.6 8.6 8.6
0.8 - 0.8 0.8 0.8
CHEMICAL CHARACTERISTICS FOH LAKE LA MOURE
STORET CODE 3807
2NO SAMPLING ( 7/10/74)
2 SITES
RANGE
15.4
0.0
552.
7.7
238.
0.459
0.357
0.070
0.220
1.600
0.290
1.680
2.6
1.8
- 2?. i.
6.2
- 733.
8.4
- 290.
- 1.380
- 0.868
- 0.160
- 2.170
- 3.300
• 2.330
- 3.460
- 25.5
3.7
MEAN
23.3
2.4
664.
8.1
261.
0.628
0.468
0.095
0.612
2.083
0.707
2.178
14.0
2.7
MEDIAN
23.7
1.2
663.
8.0
264.
0.478
0.393
0.080
0.325
1.850
0.415
1.940
14.0
2.7
3RD SAMPLING ( 9/17/7*)
a SITES
RANGE MEAN MEDIAN
14.4 - 15.6 15.2 15.J
6.2 - 9.0 7.4 7.
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B. Biological Characteristics:
1. Phytoplankton -
Sampling
Date
04/29/74
07/10/74
09/17/74
Dominant
Genera
1.
2.
3.
4.
5.
1.
2.
3.
4.
5.
1.
2.
3.
Cyclotella sp.
Ankistrodesmus sp.
Synedra sp.
Chroomonas SJK
Cryptomonas sp.
Other genera
Total
Rhodomonas sp.
Cryptomonas sj) .
Aphanizomenon sp_.
Anabaena sp.
Ankistrodesmus sp.
Other genera
Total
Aphanizomenon j>p_.
Chroomonas sp.
Cryptomonas sp.
Algal Units
per ml
5,208
2,559
1,594
853
539
1,055
11,808
1,772
405
354
101
51
152
2,835
2,402
129
43
2. Chlorophyll a^ -
Sampli ng
Date
04/29/74
07/10/74
09/17/74
Total 2,574
Station
Number
1
2
1
2
1
2
Chlorophyll a
(ug/1)
8.6
2.6
25.5
39.2
22.7
-------
0.290
0.340
0.340
0.290
0.646
0.646
1.646
1.646
18.5
19.0
43.0
43.7
7
C. Limiting Nutrient Study:
1. Autoclaved, filtered, and nutrient spiked -
Ortho P Inorganic N Maximum yield
Spike (mg/1) Cone, (mg/1) Cone, (mg/1) (mg/1-dry wt.)
Control
0.050 P
0.050 P + 1.0 N
1.0 N
2. Discussion -
The control yield of the assay alga, Selenastrum capri-
cornutum, indicates that the potential primary productivity
of Lake LaMoure was high at the time the assay sample was
collected (09/17/74). Also, the significant increase in
yield with the addition of nitrogen alone indicates that
the lake was limited by nitrogen at that time. Note that
the addition of phosphorus alone did not result in a sig-
nificant increase in yield.
The lake data also indicate nitrogen limitation; i.e.;
the mean inorganic nitrogen/orthophosphorus ratios were 4/1
or less at all sampling times.
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8
IV. NUTRIENT LOADINGS
(See Appendix E for data)
For the determination of nutrient loadings, when possible the
North Dakota National Guard collected monthly near-surface grab samples
from each of the tributary sites indicated on the map (page vi), except
for the high runoff month of May when two samples were collected.
Sampling was begun in March, 1975, and was completed in August, 1975.
Through an interagency agreement, stream flow estimates for the
year of sampling and a "normalized" or average year were provided by
the North Dakota 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 loads for unsampled
"minor tributaries and immediate drainage" ("ZZ" of U.S.G.S.) were esti-
mated using the nutrient loads at station A-2, in kg/km2/year, and multi-
plying by the ZZ area in km2.
A. Waste Sources:
1. Known municipal - None
2. Known industrial - None
* See Working Paper No. 175.
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9
B. Annual Total Phosphorus Loading - Average Year:
1. Inputs -
kg P/ % of
Source yr total
a. Tributaries (non-point load) -
Cottonwood Creek 2,505 93.1
b. Minor tributaries & immediate
drainage (non-point load) - 150 5.6
c. Known municipal STP's - None
d. Septic tanks - None
e. Known industrial - None
f. Direct precipitation* - 35 1.3
Total 2,690 100.0
2. Outputs -
Lake outlet - Cottonwood Creek 1,580
3. Net annual P accumulation - 1,110 kg.
* See Working Paper No. 175.
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10
C. Annual Total Nitrogen Loading - Average Year:
1. Inputs -
kg N/ % of
Source y_r total
a. Tributaries (non-point load) -
Cottonwood Creek 7,695 74.4
b. Minor tributaries & immediate
drainage (non-point load) - 490 4.7
c. Known municipal STP's - None
d. Septic tanks - None
e. Known industrial - None
f. Direct precipitation* - 2,160 20.9
Total 10,345 100.0
2. Outputs -
Lake outlet - Cottonwood Creek 9,040
3. Net annual N accumulation - 1,305 kg.
D. Non-point Nutrient Export by Subdrainage Area:
Tributary kg P/km2/yr kg N/km2/yr
Cottonwood Creek 7 23
* See Working Paper No. 175.
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11
E. Yearly Loads:
In the following table, the existing phosphorus loadings
are compared to those proposed by Vollenweider (Vollenweider
and Dillon, 1974). Essentially, his "dangerous" loading is
one at which the receiving water would become eutrophic or
remain eutrophic; his "permissible" loading is that which
would result in the receiving water remaining oligotrophic
or becoming oligotrophic if morphometry permitted. A meso-
trophic loading would be considered one between "dangerous"
and "permissible".
Note that Vollenweider's model may not be applicable to
water bodies with short hydraulic retention times.
Total Phosphorus Total Nitrogen
Total Accumulated Total Accumulated
grams/mVyr 1.35 0.56 5.2 0.7
Vollenweider phosphorus loadings
(g/m2/yr) based on mean depth and mean
hydraulic retention time of Lake LaMoure:
"Dangerous" (eutrophic loading) 0.32
"Permissible" (oligotrophic loading) 0.16
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12
V. LITERATURE REVIEWED
Hoetzer, Steve, 1976. Personal communication (lake morphometry).
ND State Water Comrn., Bismarck.
Peterson, Norman L., 1974. Personal communication (nutrient sources
in the Lake LaMoure drainage basin). ND Dept. of Health, Bismarck.
Vollenweider, R. A., and P. J. Dillon, 1974. The application of
the phosphorus loading concept to eutrophication research.
Natl. Res. Council of Canada Publ. No. 13690, Canada Centre
for Inland Waters, Burlington, Ontario.
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13
VI. APPENDICES
APPENDIX A
LAKE RANKINGS
-------
LA*E DATA TO BE USED IN HANK INGS
LAKE
CODE LAKE NAME
3301 LAKE ASHTABULA
380Z LAKE AUDUttON
3803 BRUSH LAKE
3804 LAKE DARLING
3805 DEVILS LAnE
3806 JAMESTOWN RESEKVOIR
3807 LAKE LA MOURE
3808 MATEJCEK LAKE
3609 LAKE METIGOSHE
3811 PELICAN LAKE
3812 LAKE SAKAKAWEA (GARRISON
3813 SPIRIT WOOD LAKE
381* SWEET BRIAR RESERVOIR
3815 WHITMAN LAKE
MEDIAN
TOTAL P
0.260
0.067
0.06b
0.274
0.6JO
0.144
0.438
0.228
0.032
0.034
0.016
0.156
0.092
0.260
MEDIAN
INOHG N
0.160
0.220
0.095
0.250
0.140
0.365
0.380
0.44Q
0.080
0.070
0.150
0.290
0.090
0.260
500-
MEAN SEC
-72.250
446.222
44V. 143
466.750
.,49.333
438.667
421.400
475.167
389.167
36*. 500
408.733
417.833
440.800
478.333
MEAN
CHLCNA
40.892
11.322
29.114
60.075
38.508
19.400
19.720
2.683
10.367
10.950
6.883
34.667
39.000
27.067
15-
HIN 00
10.600
11.000
9.000
11.600
14.600
8.800
15.000
14.400
9.000
12.800
10.800
15.000
8.800
9.200
MEDIAN
DISS OHTMO
0.170
0.015
0.010
0.180
0.469
0.07B
0.290
0.179
0.010
0.006
0.007
0.082
0.031
0.185
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PERCENT OP LAKES *ITH HIGHER VALUES (NUMBER OK LAKES rflTh HIGrtEK VALUES)
LAKE
CODE LAKE NAME
3801 LAKt ASHTAbULA
3802 LAKE AUDUdON
3803 BXUSri LAKE
3804 LAKE JAHLING
3H05 DEVILS LAKE
3806 JAMESTOWN RESERVOIR
3BU7 LAKE LA HOLME
3808 MATEJCEK LAKE
3809 LAKE METIGOSHE
3811 PELICAN LAKE
3812 LAKE SAKAKA-4EA (GARRISON
381J SPIRIT WOOD LAKE
3814 SHEET BRIAR RESEKVOI*
3815 WHITMAN LAKE
MEDIAN
TOTAL P
27 (
69 (
77 (
15 (
0 (
54 (
8 (
38 (
92 (
85 I
100 (
46 (
62 (
27 (
3)
9)
10)
2)
0)
7)
1)
5)
12)
ID
13)
6)
8)
3)
MEDIAN
b4 (
<*6 <
77 (
38 (
69 (
15 I
8 <
0 (
92 <
100 <
62 '
23 i
85 '
31
7)
b)
10)
5)
: •*)
; 2>
! 1)
: o>
! 12)
I 13)
I 8)
I 3)
I 11>
( 4)
500-
MEAN SEC
15 (
46 <
J8 (
23 (
31 (
62 (
69 (
B (
92 (
100 (
85 (
77 (
54 (
0 (
2)
b)
b)
3)
4)
8)
9)
1)
12)
13)
ID
10)
7)
0)
MEAN
CHLOHA
8 (
69 (
38 I
0 <
23 (
62 (
b4 <
100 1
«b (
77 <
92 <
31 <
15 (
46 (
1)
9)
5)
0)
3)
8)
7)
13)
11)
10)
12)
4)
2>
6)
15-
MIN 00
62 (
46 <
81 (
38 (
IS (
96 (
4 (
23 (
81 (
31 <
54 (
4 (
96 (
69 (
8)
b)
10)
5)
2)
12)
0)
3)
10)
4)
7)
0)
12)
9)
MEDIAN
D1SS OUTHO P
3b (
69 <
81 <
23 <
0 (
54 <
8 I
31 <
81 (
100 (
92 (
46 (
62 <
15 (
5)
9>
10)
3)
0)
7)
1)
4)
10)
13)
12)
6)
8)
2)
INOLX
NO
204
345
392
137
138
343
151
200
523
493
485
227
374
188
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LAKES RANKED BY INDEX NOS.
*ANK LAKE CODE LAKE NAME INDE* NO
1 3H09 LAKE MtTlUOShE 523
J 3812 LAKE SAKAKAMEA
fa 3802 LAKE AUOUBON 345
7 3906 JAMESTOWN SESERVOIK 343
8 3»13 SPIRIT WOOD LAKE 227
9 3801 LAKE ASriTABULA 20
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APPENDIX B
CONVERSION FACTORS
-------
CONVERSION FACTORS
Hectares x 2.471 = acres
Kilometers x 0.6214 = miles
Meters x 3.281 = feet
-4
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 = Ibs/square mile
-------
APPENDIX C
TRIBUTARY FLOW DATA
-------
TRIBUTARY FLO* INFORMATION FOR NORTH DAKOTA
03/16/76
LAKE CODE 3807
LAKE LAMOUHE RES.
TOTAL DRAINAGE A*EA OF LAKE«SQ KM)
SU8-ORAINAGE
TRIb'JTARr AREA (SO KM)
JAN
FEB
3807A1
3807A2
38072Z
357.4
334.1
23.3
0.008 0.003
0.000 O.OOH
0.0 0.0
357.
MA«
0.383
0.363
0.020
APR
MAY
0.906 0.340
0.906 0.3^0
0.057 0.023
MEAN MONTHLY FLOWS AND DAILY FLOWS(CMS)
TRIBUTARY MONTH YEAR MEAN FLOW OAY
3807A1
3807A2
380721
9
10
11
12
1
2
3
4
5
6
7
8
9
10
11
12
1
•>
3
4
5
6
7
8
9
10
11
12
1
2
3
4
5
6
7
8
74
74
74
74
75
75
75
75
75
75
75
75
74
74
74
74
75
75
75
75
75
75
75
75
74
74
74
74
75
75
75
75
75
75
75
75
0.0
0.0
0.0
0.0
0.0
0.0
0.0
1.331
0.040
0.119
2.945
0.042
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.396
0.054
0.023
2.775
0.054
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.085
0.003
0.008
0.193
0.003
21
19
18
21
18
21
5
2
22
19
22
21
19
18
21
18
21
5
2
22
19
22
NORMALIZED FLOHS(CMS)
JUN JUL AUG
0.198 0.113 0.042
0.227 0.142 0.048
0.014 0.008 0.003
SUMMARY
SEP
0.023
0.028
0.003
OCT
0.023
0.025
0.0
NOV
0.025
0.025
0.0
DEC
0.014
0.014
0.0
MEAN
0.165
0.171
0.011
TOTAL DRAINAGE AREA OF LAKE = 357.4
SUM UF SUB-DRAINAGE AREAS = 357.4
TOTAL FLO* IN
TOTAL FLOW OUT
2.18
1.99
FLOW DAY
FLOW DAY
FLOW
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.054
0.028
0.595
0.020
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.085
0.023
0.708
0.020
18
17
18
17
5.663
0.011
0.000
0.014
-------
APPENDIX D
PHYSICAL and CHEMICAL DATA
-------
STOHET kETKIEVAL UATE 76/03/16
00010
DATE TIME DEPTH WATER
FROM OF TEMP
TO DAY FEET CENT
74/04/29 09 40 0000 14.0
09 40 0005 14.0
09 40 0010 14.0
74/07/10 13 05 0000 23.8
13 05 0005 23.6
13 05 0015 23.0
13 05 0022 15.4
74/09/17 10 30 0000 15.b
10 30 0005 15.5
10 30 0011 15.3
380701
46 17 52.0 098 16 01.0 3
LAKE LA MOUNE
38045 NORTH IJAKOTA
HEP ALES
211
0015 FEET DEPTrt CLASS
00300
DO
MG/L
B.O
7.6
1.2
1.2
0.2
0.0
9.0
8.0
7.2
00077
TRANS*3
StCCHI
INCHES
33
144
72
00094
CNOUCTVY
FIELD
MICROMHO
335
334
333
666
660
646
552
607
610
608
00400
PH
Su
7.85
7.80
7.80
8.10
8.00
7.90
7.70
7.63
7.66
7.58
00410
T ALK
CAC03
MG/L
132
128
131
240
238
268
290
480
485
455
00610
NH3-N
TOTAL
MG/L
0.060
0.030
0.040
0.310
0.340
U.410
2.170
0.300
0.300
0.340
1202 '
00 ^
00625
TOT KJEL
N
MG/L
1.600
1.500
1.400
1.800
1.900
2.100
3.300
3.100
3.600
2.700
I/ — CX «•
\
00630
N02&N03
N-TOTAL
MG/L
0.180
0.020
0.060
0.080
0.100
0.080
0.160
o.oeo
0.080
0.070
-*»^ S wo
00o71
PHOS-LiIS
ORTHO
MG/L P
0.032
0.033
0.035
0.369
0.394
0.430
0.868
0.288
0.292
0.284
DATE
FROM
TO
74/04/29
74/07/10
74/09/17
0066S 32217 00031
TIME DEPTH PHOS-TOT ChLRPHYL INCOT LT
OF A REMNING
DAY FEET
09
09
09
13
13
13
13
10
10
10
10
40
40
40
05
05
05
05
30
30
30
30
0000
0005
0010
0000
0005
0015
0022
0000
0005
0008
0011
MG/L
0
0
0
0
0
0
1
0
0
0
•
•
•
•
•
•
•
•
•
•
P UG/L PERCENT
147 8.6
131
129
4S<3 2.6
490
511
380
438 39.2
436
10.0
387
-------
STOHET RETRIEVAL DATE 76/03/16
380702
46 17 49.0 098 17 31.0 3
LAKE LA MOURE
3804b NORTH DAKOTA
DATE
FROM
TO
74/07/10
74/09/17
TIME DEPTH
OF
DAY FEET
12 45 0000
12 45 0003
10 15 0000
10 15 0003
00010
WATER
TEMP
CENT
27.2
27.1
14.9
14.9
00300
DO
MG/L
6.2
5.6
6.4
6.2
11EPALES
211
0006 FEET DEPTH CLASS
00300
DO
MG/L
6.2
5.6
6.4
6.2
00077
TRANSP
SECCHI
INCHES
72
72
00094
CNDUCTVY
FIELD
MICKOMHO
726
733
608
608
00400
PH
su
B.40
8.40
7.58
7.60
00410
T ALK
CAC03
MG/L
270
260
395
515
00610
NH3-N
TOTAL
MG/L
0.220
0.220
0.320
0.290
1202
00
00625
TOT KJEL
N
MG/L
1.800
1.600
2.400
2.400
00630
N02&N03
N-TOTAL
MG/L
0.070
0.080
O.OBO
0.080
00671
PHOS-DIS
ORTHO
MG/L P
0.393
0.357
0.245
0.249
DATE
FROM
TO
74/07/10
74/09/17
00665
TIME DEPTH PHOS-TOT
OF
DAY FEET MG/L P
12 45 0000
12 45 0003
10 15 0000
10 15 0003
10 15 0006
0.467
0.459
0.365
0.361
32217 00031
CHLRPHYL INCDT LT
A REMNING
UG/L PERCENT
25.5
22.7
20.0
-------
APPENDIX E
TRIBUTARY DATA
-------
STORE.! RETRIEVAL
76/03/18
3807A1
46 17 45.0 098 45 50.
COTTONwOOD CREEK
3809J 7.5 LA MOUrtE
0/LftMUUHE kESESVOIK
brtOG ON FAS 243 b Ml
11EPALES
0 4
SE JCT wTH LA MOUKE
21112C4
ooco FEET DEPTH CLASS oo
DATE TIME DEPTH
FROM OF
TO DAY FEET
75/0<»/18 10 20
75/05/02 10 40
75/05/17 10 00
75/06/22 15 15
75/07/19 09 30
75/OB/22 14 00
00630
N-TOTAL
MG/L
0.155
0.780
0.790
0.375
0.020
0.110
00625
TOT KJEL
N
MG/L
0.800
2.300
2.600
1.850
1.700
2.100
00610
NH3-N
TOTAL
MG/L
0.045
0.390
0.270
0.130
0.035
0.135
00671
PHOS-DIS
OrfTHO
MG/L P
0.100
0.270
0.250
0.330
0.340
0.400
00665
PHOS-TOT
MG/L H
0.140
0.440
0.290
0.400
0.400
0.560
-------
STORE! RETRIEVAL DATE 76/03/18
DATE TIME DEPTH N02&N03
FROM OF
TO DAY FEET
75/03/21 13 30
75/04/18 10 35
75/05/02 11 00
75/05/17 10 28
75/06/22 15 45
75/07/19 09 *5
75/08/22 1* 15
3807A2
46 19 00.0 098 19 35.0 4
COTTONWOOD CHEEK
38 7.5 LA MOURt
T/LA MOURE RESERVOIR
BROG ON FAS 593 3.2 MI SW OF LA MOURE
11EPALES 2111204
0000 FEET DEPTH CLASS 00
0630
&N03
OTAL
IG/L
0.510
0.360
1.050
0.010
0.070
0.010
0.010
00625
TOT KJEL
N
MG/L
2.800
6.050
1.650
1.600
1.600
1.350
1.950
00610
NM3-N
TOTAL
MG/L
0.775
1.950
0.045
0.040
0.125
0.040
0.040
00671
PHOS-DIS
ORTrtO
MG/L P
0.345
0.420
0.120
0.170
0.430
0.575
0.875
00665
PHOs-TOT
MG/L P
O.B10
0.610
0.260
0.200
0.540
0.600
0.960
------- |