U.S. ENVIRONMENTAL PROTECTION AGENCY
NATIONAL EUTROPHICATION SURVEY
WORKING PAPER SERIES
REPORT
ON
LAKE DARLING
RENVILLE AND WARD COUNTIES
NORTH DAKOTA
EPA REGION VIII
WORKING PAPER No, 568
CORVALLIS ENVIRONMENTAL RESEARCH LABORATORY - CORVALLIS, OREGON
and
ENVIRONMENTAL MONITORING & SUPPORT LABORATORY - LAS VEGAS, NEVADA
699-440
-------
REPORT
ON
DARLING
RENVILLE AND WARD COUNTIES
NORTH DAKOTA
EPA REGION VIII
WORKING PAPER No, 568
WITH THE COOPERATION OF THE
NORTH DAKOTA STATE DEPARTMENT OF HEALTH
AND THE
NORTH DAKOTA NATIONAL GUARD
OCTOBER, 1976
-------
CONTENTS
Page
Foreword i i
List of North Dakota Study Lakes and Reservoirs iv
Lake and Drainage Area Map v
Sections
L 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 13
-------
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.
-------
iii
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 Renvilie/ 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
-------
f
— 4845
0
X
0
0
LAKE DARLING
Tributary Sampling Site
Lake Sampling Site
? 10 is 20 Km.
s 10 Mi .
Scale
Tolle
N. Dak.
Map Location
4830
10200
10145
Souris River
ft/am / ioi"30
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LAKE DARLING
STORE! NO. 3804
I. CONCLUSIONS
A. Trophic Condition:
Survey data indicate that Lake Darling is eutrophic. It
ranked last in overall trophic quality when the 14 North
Dakota lakes sampled in 1974 were compared using a combination
of six parameters*. Eleven of the lakes had less median total
phosphorus, ten had less median dissolved orthophosphorus,
eight had less median inorganic nitrogen, all of the others had
less mean chlorophyll a_, and ten had greater mean Secchi disc
transparency.
Field limnologists noted algal blooms and surface scums
at all sites during the July and September sampling periods.
B. Rate-Limiting Nutrient:
The algal assay results indicate the lake was nitrogen limited
at the times the samples were taken (04/30/74 and 09/13/74).
The lake data indicate nitrogen limitation in July as well.
C. Nutrient Controllability:
1. Point sources—No known domestic or industrial point
sources impacted Lake Darling during the sampling year.
The present phosphorus loading of 0.48 g/m2/yr is 1.6 times
that proposed by Vollenweider {Vollenweider and Dillon, 1974)
as a eutrophic loading (see page 11).
* See Appendix A.
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2
2. Non-point sources—The phosphorus contribution of the
Souris River accounted for 91% of the total load to Lake Darling
during the sampling year. The ungaged drainage areas were esti-
mated to have contributed 5.3% of the total load.
Land use in the Lake Darling drainage is mainly agriculture,
and any reductions in nutrients would involve improved land-use
practices. However, the phosphorus export rate of the Souris
River was only 2 kg/km2 during the sampling year (see page 10).
Nutrient loads from waterfowl are thought to be minimal
since the lake proper is not prime waterfowl habitat as compared
to neighboring refuge areas.
-------
II. LAKE AND DRAINAGE BASIN CHARACTERISTICS1"
A. Lake Morphometry :
1. Surface area: 40.06 kilometers2.
2. Mean depth: 3.4 meters.
3. Maximum depth: 7.9 meters.
4. Volume: 136.204 x 106 m3.
5. Mean hydraulic retention time: 1.4 years (based on outflow)
B. Tributary and Outlet:
(See Appendix C for flow data)
1. Tributaries -
Drainage Mean flow
Name area (km2)* (m3/sec)*
Souris River 7,873.6 3.081
Minor tributaries &
immediate drainage - 503.8 0.193
Totals 8,377.4 3.274
2. Outlet -
Souris River 8,417.5** 3.150
C. Precipitation***:
1. Year of sampling: 49.4 centimeters.
2. Mean annual: 41.9 centimeters.
t Table of metric conversions—Appendix B.
tt Henegar, 1975.
* 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 Darling was sampled three times during the open-water season
of 1974 by means of a pontoon-equipped Huey helicopter. Each time,
samples for physical and chemical parameters were collected from two
or more depths at two stations in April and three stations in July
and September (see map, page v). During each visit, a single depth-
integrated (near bottom to surface) sample was composited from the
stations for phytoplankton identification and enumeration; and during
the April and September visits, a single 18.9-liter depth-integrated
sample was composited for algal assays. Also each time, a depth-
integrated sample was collected from each of the stations for chlorophyll
a_ analysis. The maximum depths sampled were 4.3 meters at station
1, 5.5 meters at station 2, and 5.8 meters at station 3.
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)
CNDCTVY (MCHOMO)
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/LI
INORG N (MG/L)
TOTAL N (MG/L)
CHLRPYL A (UG/L)
SECCHI (METERS)
A. SUMMARY OF PHYSICAL AND
1ST SAMPLING ( 4/30/74)
2 SITES
RANGE MEAN MEDIAN
4.2 - 11.9 7.5 4.6
8.0 - 8.ft 8.3 d.2
246. - 318. 278. 255.
7.6 - 8.0 7.7 7.7
86. - 11*. 95. 89.
0.123 - 0.143 0.133 0.132
0.040 - 0.059 0.047 0.046
0.340 - 0.450 0.^08 0.^30
0.090 - 0.210 0.156 0.190
0.900 - 1.300 1.060 1.000
0.430 - 0.660 0.564 0.630
1.240 - 1.680 1.468 1.450
6.9 - 19.3 13.1 13.1
0.4 - 0.6 0.5 0.5
CHEMICAL CHARACTERISTICS FOK LAHE OARLING
STOKET CODE 3804
2ND SAMPLING ( 7/17/74)
3 SITES
RANGE
23.2 - 24.3
3.4 - 9.6
540. - 1005.
8.2 - 9.1
166. - 286.
0.265 - 0.414
0.180 - 0.312
0.040 - 0.080
0.080 - 0.380
1.400 - 2.900
0.120 - 0.460
1.450 - 2.950
11.7 - 69.4
1.0 - 1.5
MEAN
23.9
7.0
794.
8.9
226.
0.327
0.222
0.063
0.186
1.722
0.249
1.786
36.1
1.2
MEDIAN
23.9
7.8
850.
9.0
244.
0.304
0.215
0.070
0.180
1.400
0.240
1.480
27.3
1.0
3RU SAMPLING ( 9/13/74)
3 SITES
RANGE MEAN MEDIAN
10.tt - 12.0 11, 4 11. *
6.6 - 10.". 9.0 9.b
445. - 597. 518. 511.
8.7 - 9.3 9.0 9.2
190. - 288. 242. 258.
0.172 - 0.359 0.266 0.263
0.054 - 0.200 0.133 0.157
0.020 - 0.160 0.074 0.040
0.040 - 0.120 0.072 0.050
1.100 - 2.600 1.889 2.000
0.070 - 0.280 0.147 0.090
1.260 - 2.630 1.963 2.040
13.1 - 262.4 115.3 70.5
0.4 - 1.3 0.8 O./
in
-------
B. Biological characteristics:
1. Phytoplankton -
Sampling
Date
04/30/74
07/17/74
09/13/74
Dominant
Genera
1. Cyclotella sp.
2. Chroomonas sp.
3. Cryptomonas SJD.
4. Chlamydomonas sp.
5. Stephanodiscus s£.
Other genera
Total
1. Aphanizqmenon s£.
2. Phormidium sp.
3. Chroococcus sp.
4. Chroomonas ji£.
5. Flagellates
Other genera
Total
1. Apham'zomenon sj>.
2. Anabaena s£.
3. Stephanodiscus s£
4. Chroomonas sp_.
5. Microcystis sj>.
Other genera
Total
Algal Units
per ml
9,068
585
553
488
130
259
11,083
8,017
13,938
691
479
266
53
48
15,475
2. Chlorophyll a_ -
Sampling
Date
04/30/74
07/17/74
09/13/74
Station
Number
1
2
3
1
2
3
1
2
3
Chlorophyll a_
(ug/1)
6.9
19.3
11
69
27
.7
.4
.3
13.1
70.5
262.4
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C. Limiting Nutrient Study:
1. Autoclaved, filtered, and nutrient spiked -
a. April sample -
Spike (mg/1)
Control
0.050 P
0.050 P + 1.0 N
1.0 N
b. September sample -
Ortho P
Cone, (mg/1)
Inorganic N
Cone, (mg/1)
Maximum yield
(mg/1-dry wt.)
0.045
0.095
0.095
0.045
0.436
0.436
1.436
1.436
11.5
14.4
29.4
18.0
Spike (mg/1)
Control
0.050 P
0.050 P + 1.0 N
1.0 N
Ortho P
Cone, (mg/1)
0.120
0.170
0.170
0.120
Inorganic N
Cone, (mg/1)
0.403
0.403
1.403
1.403
Maximum yield
(mg/1-dry wt.)
16.1
18.6
38.2
34.5
2. Discussion -
The control yields of the assay alga, Selenastrum capri-
cornutum, indicate that the potential primary productivity
of Lake Darling was very high at the times the samples were
collected (04/30/74 and 09/13/74).
There was a significant increase in yield when only
nitrogen was added (the slight increase when only phosphorus
was added is not considered significant). Based on these
results, nitrogen limitation is indicated by both assays.
The lake data indicate nitrogen limitation at all sampling
times; the mean inorganic nitrogen to orthophosphorus ratios
were 12 to 1 or less, and nitrogen limitation would be expected.
-------
8
IV. NUTRIENT LOADINGS
(See Appendix E for data)
For the determination of nutrient loadings, the North Dakota National
Guard collected monthly near-surface grab samples from each of the
tributary sites indicated on the map (page v), except for the high
runoff months of April and May when two samples were collected.
Sampling was begun in September, 1974, 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
estimated using the nutrient loads at station A-2, in kg/km2/year,
and multiplying by the ZZ area in km2.
No known wastewater treatment plants impacted Lake Darling during
the sampling year.
A. Waste Sources:
1. Known municipal - None
2. Known industrial - None
* See Working Paper No. 175.
-------
9
B. Annual Total Phosphorus Loading - Average Year:
1. Inputs -
kg P/ % of
Source ^r total
a. Tributaries (non-point load) -
Souris River 17,380 91.0
b. Minor tributaries & immediate
drainage (non-point load) - 1,010 5.3
c. Known municipal STP's - None
d. Septic tanks - None
e. Known industrial - None
f. Direct precipitation* - 700 3.7
Total 19,090 100.0
2. Outputs -
Lake outlet - Souris River 10,720
3. Net annual P accumulation - 8,370 kg.
* See Working Paper No. 175.
-------
10
C. Annual Total Nitrogen Loading - Average Year:
1. Inputs -
kg N/ % of
Source yr total
a. Tributaries (non-point load) -
Souris River 190,060 77.5
b. Minor tributaries & immediate
drainage (non-point load) - 12,090 4.9
c. Known municipal STP's - None
d. Septic tanks - None
e. Known industrial - None
f. Direct precipitation* - 43,250 17.6
Total 245,400 100.0
2. Outputs -
Lake outlet - Souris River 163,400
3. Net annual N accumulation - 82,000 kg.
D. Non-point Nutrient Export by Subdrainage Area:
Tributary kg P/km2/yr kg N/km2/yr
Souris River 2 24
E. Mean Nutrient Concentrations in Ungaged Stream:
Mean Total P Mean Total N
Tributary Cone, (mg/1) Cone, (mg/1)
Mackobee Coulee 0.163 2.505
* See Working Paper No. 175.
-------
11
F. 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/m2/yr 0.48 0.21 6.1 2.0
Vollenweider phosphorus loadings
(g/m2/yr) based on mean depth and mean
hydraulic retention time of Lake Darling:
"Dangerous" (eutrophic loading) 0.30
"Permissible" (oligotrophic loading) 0.15
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12
V. LITERATURE REVIEWED
Henegar, Dale, 1975. Personal communication (lake morphometry).
ND Game & Fish Dept., 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.
-------
VI. APPENDICES
13
APPENDIX A
LAKE RANKINGS
-------
LAKE DATA TO BE USED IN BANKINGS
LA
-------
OF LAKFS "IH HlGriEP VALUES (NUMBED 0^ LAKES wlTn HIGHEK VALUES)
LAKE
CODE LAKE. NAME
JhUl LAMl
3902 LAKE AiJDDeJON
3803 B^ubrt LAKE
380<* LAKE JAHLING
3H05 DEVILS LAn.E
380b JAMESTOWN RESERVOIR
3807 LAKE LA MOlME
3808 MATEJCEK LAKE
3809 LAKE METIGOSHE
3811 PELICAN LAKE
3812 LAKE SAKAKA4EA (GARRISON
3813 SPIRIT WOOD LAKE
381* SWEET HRIAR RESEKVOI*
3815 WHITMAN LAKE
MEDIAN
TOTAL P
?7 (
63 <
77 (
15 (
0 (
54 »
8 (
38 (
92 (
85 <
100 (
46 (
62 (
27 (
Jl
9)
10)
2)
0)
7)
1)
5)
12>
11)
13)
6)
8)
3)
MEDIAN
INOUG
b4 (
46 t
n (
38 (
69 (
15 <
8 (
0 (
92 <
100 (
62 <
23 »
85 (
31 (
N
7)
b)
10)
5)
9)
2)
1)
0)
12)
13)
8)
3)
11)
4)
500-
MEAN iE
15 C
46 t
J8 (
23 <
31 (
62 (
69 (
8 (
92 (
100 (
8b <
77 (
54 (
0 (
MEAN
X CHLOKA
2)
b)
b)
3)
4)
m
9)
n
12>
13)
11)
10)
7)
0)
a i
69 (
38 <
0 (
23 (
62 (
b4 <
100 I
85 I
77 (
92 (
31 (
15 (
46 (
1'
9)
5)
0)
3)
8>
7>
13>
11>
10)
12)
4)
2>
6)
15-
MIN
62 (
46 <
81 (
38 <
15 (
96 (
4 (
23 1
81 1
31 (
54 1
4 1
96 1
69 1
Me 01 AN
00
8)
b>
10>
5)
2)
12)
0)
3)
10)
! 4)
; 7)
! 0)
1 12)
! 9)
OI5S G^THC r>
3S (
69 (
81 (
23 <
0 (
54 (
8 (
31 (
81 <
100 <
92 <
46 (
62 (
15 (
5>
<*>
10)
3)
0)
7)
1»
4)
10)
13)
12)
6)
8)
2)
INOLK
NO
204
345
392
137
1J8
343
151
200
523
493
485
227
374
188
-------
LAKE5 RANivED BY INDEX NOS.
HAN* LAKE CODE LAKE NaME 1NOC* NO
LAC.F.
^ 3ill ^ELlCtr. LAM!
J 3A12 LAr^E SAKAKArfEA
i, 3803 BRUSH LAKE 3-)2
5 3S1« SWEET brtlArt SEbtHVOIK 37<*
b 3803 LAKE AUOU8CM 345
7 3806 JAfiESTOWN SESESVOIK 343
8 3B13 SPIRIT KOOO LAKE 237
9 3801 LAKE ASHTABULA
10 3808 MATEJCEK LAKE
11 3815 WHITMAN LAKE 188
12 3807 LAKE LA MOUWt 151
13 3905 DEVILS LAKE 138
14 3804 LAKE OAKLING 137
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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
-------
FLCrf INFORMATION FOH NQPTH DAr\OTA
03/16/7A
LA*E CODE 3834 OA«LING L««E
TOTAL JKAINAGE A«tA OF LAi\£(50 ".M>
THIHUTA^Y APFACSQ KMI
3804A1
3804A2
8417.5
7873.6
49«*.7
JAM
O.H2
0.062
0.003
Ftd
0.71
0.068
0.006
!.!>«• 11.36
3.<»*3 17.670
0.227 l
.UEU FLOtfSCCMS)
MAY JON JUL AOG SCP
10.b^ 4.19 3.26 l.bJ 1.03
B.212 3.5<*0 2.350 0.623 0.340
0.510 0.227 0.142 0.0*0 0.023
SUMMARY
fl<«17.5
8368.3
TOTAL DRAINAGE ARtA OF LAK£
SUM OF SUB-ORAINAGE AREAS
MEAN MONTHLY FLOwS AND DAILY FLOrtS(CMS)
TRldJTAKY MONTH YE Art MEAN FLOW DAY FLO* (JAY
3804A1
TOTAL FLO* IN
TOTAL FLO* OUT
OCJ
0.7b
0.27H
0.017
37.
NOV
O.V3
0.2b2
0.017
OcC
0.82
0.113
0.006
MEAN
3.15
3.oei
0.193
3B04A2
3804Z2
9
10
11
12
1
2
3
4
5
6
7
8
9
10
11
12
1
2
3
4
5
6
7
ft
9
10
11
12
1
2
3
4
5
6
7
a
7*
74
74
74
75
75
75
75
75
75
75
75
74
It
74
74
75
75
75
75
75
75
75
75
74
7«»
74
7*
75
75
75
75
75
75
75
75
FLO* DAY
FLOW
1.487
0.861
0.929
0.864
0.702
0.5*1
1.354
22.257
120.120
32.2P5
6.683
2.1)8
0.283
0.229
0.241
0.167
0.161
0.144
0.164
35.085
114.796
19.539
3.710
1.104
0.017
0.014
0.014
0.014
0.014
0.014
O.OP8
2.832
2.265
1.274
0.708
0.283
22
21
18
20
21
21
18
5
7
22
22
20
22
21
18
20
21
18
5
7
^3
22
20
1.699
0.850
0.934
0.850
O.blO
0.481
1.104
1.812 20
121.196 18
33.980
3.483
2.690
0.144
0.266
0.235
0.176
0.156
0.184
0.170 20
183.493 lb
14.413
2.265
0.878
15.801
146.115
48.705
110.719
-------
APPENDIX D
PHYSICAL and CHEMICAL DATA
-------
STUHET kETSIEVAL OATC 7b/CJ/l6
380401
48 ZJ 32.0 101 3b 14.0 3
LAKE 0AftLINO
33101 NORTH DAKOTA
UEKALES
0015 FEtT
DEPTH
ail 1203
CLASS GO
DATE
FROM
TO
70/04/30
74/07/17
74/09/13
DATE
FROM
TO
74/04/30
74/07/17
74/09/13
TIME DEPTn
OF
DAY FEET
14 55 1)000
14 55 00 Ob
14 55 0011
11 25 0000
11 25 0005
11 25 0011
16 45 0000
16 45 0010
16 45 0014
TIME DEPTH
OF
DAY FEET
14 55 0000
14 55 0005
14 55 0011
11 25 0000
11 2S 0005
11 ?S 0009
11 25 0011
16 45 0000
16 45 0002
16 45 0008
16 45 0010
16 45 0011
16 45 0014
GOOIO
WATER
fEM13
CfcNT
0.6
o.P
4.2
24.0
2<».0
23.8
12.0
11.9
11.9
00665
PHOS-TOT
MG/L P
0.126
0.123
0.132
G.296
0.336
0.414
C.27-,
0.274
0.247
00300
00
*G/L
1.2
8.0
5.4
o.2
J.4
6.8
7.0
7.2
32217
CHLRPHITL
A
UG/L
6.9
11.7
13.1
00077
TRANSP
SECCHI
INCHES
24
60
50
00031
INCOT LT
REMNING
PERCENT
1.0
50.0
S.C
1.0
00094
CNOUCTVY
FIELD
Mlc^OHi-iO
255
246
251
541
540
544
447
446
445
00400
PH
su
7.60
7.60
a.oo
9.00
9.00
8.90
8.67
8.67
8.69
00410
T ALK
CAC03
MG/L
88
86
171
166
178
191
190
193
00610
NH3-N
TOTAL
MG/L
0.200
0.190
0.210
0.180
0.220
0.380
0.120
0.120
0.110
00625
TOT KJEL
N
MG/L
.100
.000
.000
.600
.400
.400
1.400
1.400
1*100
00630
N02&N03
N-TOTAL
MG/L
0.430
0.440
0.450
0.070
0.060
0.080
0.150
0.160
0.160
00671
PHOS-OIS
OUT MO
MG/L P
0.042
0.040
0.046
0.244
0.180
0.312
0.200
0.194
0.181
-------
STOHET RETRIEVAL OAT£ 7*>/G3/16
330402
48 36 45.0 101 37 02.0 3
LAKE DARLING
N(Wri UAKOT4
11EPALES
0012 FEET
DEPTH
2111202
CLASS 00
DATE
FROM
TO
74/0«4/30
7^/07/17
7«./09/13
DATE
FROM
TO
74/04/30
74/07/17
74/09/13
TIME DEPTH
OF
BAY FEET
15 20 0000
15 20 0008
10 55 0000
10 55 0005
10 55 00(3
15 20 0000
15 20 0005
15 20 0018
TIME DEPTH
OF
DAY FEET
15 20 0000
15 20 0008
10 55 0000
10 55 0005
10 55 0006
10 S5 0013
15 20 0000
15 20 0002
15 ?0 0004
15 20 0005
15 ?0 0006
15 ?0 0018
00010
WATER
TEHP
CENT
11.9
11.9
24.3
23.9
23.5
11. *
11.4
11.3
00665
PHOS-TOT
MG/L P
0.143
0.138
0.380
0.299
0.304
0.263
v.35?
0.344
00300
00
*G/L
8.8
tt.b
7.8
6.4
9.4
9.6
9.8
32217
CHLtfPHYL
A
UG/L
IV. 3
69.4
70.5
00077
TRAMSP
SECCHI
INCHES
14
39
26
00031
INCDT LT
REMNING
PERCENT
1.0
50.0
5.0
1.0
00094
CNDUCTVr
FIFLU
MICriOMHO
31U
318
866
M50
822
511
510
513
HH
su
7.80
7.70
9.10
9.00
9.00
9.21
9.19
9.21
T ALK
CAC03
MO/L
99
11*
256
244
254
2SB
260
-------
STORET KETrtlEVAL OATt 7^/03/16
380403
48 3d 48.0 101 40 46.0 3
LAKE 0AWL ING
3807^ NGuTrt DAKOTA
DATE
FROM
TO
74/07/17
74/09/13
DATE
FROM
TO
74/07/17
74/09/13
TIME DEPTH
OF
DAY FEET
10 ?5 0000
10 25 0005
10 25 0015
14 55 0000
14 55 0009
14 55 0019
TIME DEPTH
OF
UAY FEET
10 25 0000
10 25 0005
10 25 0015
14 55 0000
14 55 0001
14 55 0003
14 55 0004
14 55 0009
14 55 0019
00010
WATER
TEMP
CENT
24.?
23.6
23.2
11.2
10.4
10. A
00665
PHOS-TOT
MG/L P
0.360
0.2BS
0.265
0.172
0.25U
0.198
00300
DO
MG/L
8.8
9.6
8.4
10.4
1C. 4
10.2
32217
CHLRPHYL
A
UG/L
27.3
262.4
00077
TRANSP
SECCHl
INCHES
39
14
00031
1NCDT LT
REMNING
PERCENT
50.0
5.0
1.0
00094
CNDUCTVY
FIELU
MICROMMO
1005
993
982
595
595
597
11EPALES
211
OOlti FEET DEPTH CLASS
00400
PH
SU
9.10
4.00
8.20
9.29
9.17
9.33
00410
T ALK
CAC03
MG/L
210
2d6
268
250
262
264
00610
NHJ-N
TOTAL
MG/L
o.oao
0.180
0.180
0.050
0.050
0.040
1202
00
0062S
TOT KJEL
N
MG/L
2.200
1.400
1.400
1.900
2.300
2.600
00630
N02&NU3
N-TOTAL
MG/L
0.040
0.050
0.060
0.020
0.030
0.030
00671
PHOS-OIS
ORTHd
MG/L P
0.203
0.220
0.193
0.055
0.056
0.054
-------
APPENDIX E
TRIBUTARY DATA
-------
STORE! *ETK1EVAL OATE 76/03/18
3804A1
48 Z'f 25.0 101 35 15.0 4
SOU* IS HIYEH
36055 7.5 CAKPIO NE
LA*£
SAM O'F 5£C KO 932 AT -nASE OF
11EPALLS 211130s
0000 FEET DEPTH CLASS OC
0AM
DATE TIME OEPTrt "»02iN03
fhfOM OK
TO DAY FEET
7W03/22
7A/10/Z1
7WI2/20
75/31/21
75/0^/21
75/OW05
75/04/20
75/05/07
75/05/18
75/06/22
75/07/32
75/OB/20
0V 30
II "5
10 10
09 30
rJl 20
09 30
10 ?S
10 45
11 30
10 00
11 00
10 ?0
09 20
0630 006?5
S.N03 TOT KJEL
UTAL N
G/L MG/L
0.20a 1.600
0.152
0.04b
0.040
0.040
0.040
0.005
0.210
0.525
0.410
0.015
0.025
.<*00
.600
.500
.100
.700
.290
.250
.200
.tOO
.200
.550
0.020 4.400
00610
NH3-N
TOTAL
MG/L
0.080
0.035
0.045
9.045
0.120
0.103
0.100
0.200
0.125
O.ObO
0.035
0.025
0.090
00671
PHOS-iMS
OPT HO
MG/L P
0.130
0.035
0.015
0.030
0.020
O.Olb
0.015
0.035
0.040
0.050
0.045
0.280
0.310
0066S
PHOS-TOT
MG/L f
0.160
0.080
0.030
0.030
0.030
0.030
0.0<*0
0.060
0.090
0.090
0.110
0.340
0.540
-------
RETRIEVAL DATE 7b/03/18
3B04A2
48 59 24.0 101 57 28.0 4
SOUflS HUTtrt
J8 RENVILLE Cl> MAP
T/OARLING LAKE
END UF 2NOARY RO 16.0 Ml UNtf OF SrIEWWOOU
11EPALES 2111204
0000 FEET DEPTH CLASS 00
DATE TIME DEPTH N02&N03
FROM OF
TO DAY FEET
74/09/32
74/10/21
74/11/18
74/18/20
75/04/20
75/OS/07
75/05/18
75/06/23
75/07/22
75/08/20
12 JO
12 45
13 «50
11 00
12 ?0
12 15
12 00
13 10
11 45
12 00
0630 006PS
&N03 TOT KJEL
OTAL N
G/L MG/L
0.020 1.300
0.24R 0.950
0.024
0.264
0.870 i
0.500
U.340
0.360
0.260
0.470
.500
.700
>.ooo
.400
.?50
.780
.450
.800
00610
NH3-N
TOTAL
MG/L
0.010
0.040
0.045
0.128
0.155
0.030
0.060
0.040
0.050
0.075
00671
PHOS-OIS
OHTHO
MG/L P
0.045
0.020
0.015
0.025
0.100
0.045
0.125
0.105
0.090
0.070
0066S
PHOS-TOT
MG/L P
0.120
0.080
0.050
0.090
0.270
0.130
0.200
0.245
0.170
0.270
-------
STORE! RETRIEVAL DATE 76/03/18
DATE TIME DEPTH N02&N03
FROM OF
TO DAY FEET
75/05/07 11 45
75/06/33 11 15
75/08/20 09 40
380061
48 28 36.0 101 54 52.0 4
MACKOBEE COULEE
38 7.5 CARPIO NE
T/DAHLING LAKE
SEC HO BRDG 1.5 MI N OF DAM 83
11EPALES 2111204
0000 FEET DEPTH CLASS 00
0630
&N03
OTAL
G/L
1.800
0.060
0.005
00625
TOT KJEL
N
MG/L
2.100
1.750
1.800
00610
NH3-N
TOTAL
MG/L
0.375
0.04Q
0.027
00671
PHOS-OIS
OHTHO
MG/L P
0.025
0.045
0.025
00665
PHOS-TOT
MG/L »»
0.170
0.140
0.180
------- |