U.S. ENVIRONMENTAL PROTECTION AGENCY
NATIONAL EUTROPHICATION SURVEY
WORKING PAPER SERIES
REPORT
ON
WHITMAN LAKE
NELSON AND WISH COUNTIES
NORTH DAKOTA
EPA REGION VI11
WORKING PAPER No, 578
CORVALLIS ENVIRONMENTAL RESEARCH LABORATORY - CORVALLIS, OREGON
and
ENVIRONMENTAL MONITORING & SUPPORT LABORATORY - LAS VEGAS, NEVADA
•&G.P.O. 699-44O
-------
REPORT
ON
WHITMAN LAKE
NELSON AND WLSH COUNTIES
NORTH DAKOTA
EPA REGION VIII
WORKING PAPER No, 578
WITH THE COOPERATION OF THE
NORTH DAKOTA STATE DEPARTMENT OF HEALTH
AND THE
NORTH DAKOTA NATIONAL GUARD
OCTOBER, 1976
-------
CONTENTS
Page
Foreword ii
List of North Dakota Study Lakes and Reservoirs iv
Lake and Drainage Area Map v
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 13
-------
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 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)L 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. Melhouse, 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
-------
v^ -,
)
s
s •!. 'O
} ">
t- 1
%
\ ~. \x- <-
^ N - ^.
x i * /
WHITMAN LAKE
® Tributary Sampling Site
X Lake Sampling Site
0 ' 4 6 .Km.
| i 1 1 1 i i i i
1 1 1
0 2 4 Mi .
Scale
y - ) , :> ^^
1 V\T V
/ 1
•v i ? -
\..
V J
\
\
N. Dak. |
Map Location
"T.
v\
M10'
Whilmon
98 00'
-------
WHITMAN LAKE
STORE! NO. 3815
I. CONCLUSIONS
A. Trophic Condition:
Survey data indicate that Whitman Lake is eutrophic. It
ranked eleventh in overall trophic quality when the 14 North
Dakota lakes sampled in 1974 were compared using a combination
of six parameters*. Nine of the lakes had less and one had the
same median total phosphorus, 11 had less median dissolved ortho-
phosphorus, nine had less median inorganic nitrogen, seven had
less mean chlorophyll a^ and all of the other lakes had greater
mean Seechi disc transparency. Depletion of hypolimnetic dis-
solved oxygen was not observed but has been reported to occur
(Peterson, 1975).
Survey limnologists noted the presence of emergent aquatic
vegetation near both sampling stations on all three sampling
occasions (however, the vegetation observed in April was dead).
Heavy algal blooms were observed in the lake in July and Sep-
tember.
B. Rate-Limiting Nutrient:
The algal assay results indicate that the lake was nitrogen
limited in April and September when the assay samples were col-
lected. The lake data indicate nitrogen limitation all three
sampling times.
* See Appendix A.
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2
C. Nutrient Controllability:
1. Point sources—No significant point sources are known
to impact Whitman Lake.
2. Non-point sources—Non-point sources accounted for an
estimated 99% of the total phosphorus load received by the lake
during the sampling year. Most of this (about 89%) was con-
tributed by the Middle Branch of the Forest River.
The estimated phosphorus loading of 0.83 g/mz/yr is over
two times that proposed by Vollenweider (Vollenweider and Dillon,
1974) as a eutrophic loading (see page 11). A large reduction
in this loading probably would be necessary to improve the tro-
phic condition of the lake noticeably. However, since much of
the phosphorus load results from agricultural practices (Peter-
son, 1974), this may be difficult to achieve.
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II. LAKE AND DRAINAGE BASIN CHARACTERISTICS1"
A. Lake Morphometry :
1. Surface area: 0.58 kilometers2.
2. Mean depth: 2.7 meters.
3. Maximum depth: 7.7 meters.
4. Volume: 1.566 x 106 m3.
5. Mean hydraulic retention time: 255 days (based on outflow).
B. Tributary and Outlet:
(See Appendix C for flow data)
1. Tributaries -
Drainage Mean flow
Name area (km2)* (m3/sec)*
Middle Branch Forest River 101.0 0.074
Minor tributaries &
immediate drainage - 9.8 0.007
Totals 110.8 0.081
2. Outlet -
Middle Branch Forest River 111.4** 0.071
C. Precipitation***:
1. Year of sampling: 31.7 centimeters.
2. Mean annual: 44.7 centimeters.
t Table of metric conversions—Appendix B.
ft 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
Whitman Lake was sampled three times during the open-water season
of 1974 by means of a pontoon-equipped Huey helicopter. Each time,
samples for physical and chemical 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 first and last visits, single 18.9-
liter depth-integrated samples were composited for algal assays. Also
each time, a depth-integrated sample was collected from each of the
stations for chlorophyll a_analysis. The maximum depths sampled were
4.9 meters at station 1 and 2.4 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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AMtTER
P
S OXY (MG/L>
CTVY (MCROMO)
(STAND UNITS)
ALK (MG/D
H (MG/U
MO P (MG/L)
•N03 (MG/L)
ONI A (MG/L>
L N (MG/L)
RG N (MG/L)
AL N (MG/D
RPYL A (OG/L)
CHI (METE»S)
A. SUMMAKY OF PHYSICAL AND
1ST SAMPLING ( 4/29/74)
? SITES
3ANGE MEAN MEDIAN
8.7 - 11.0 9.8 9.6
5.8 - 9.0 7.y 8.4
263. - 300. 281. 278.
7.6 - 7.8 7.7 7.7
96. - 105. 100. 101.
0.233 - 0.272 0.254 0.257
0.180 - 0.203 0.190 0.185
1.110 - 1.450 1.306 1.330
0.200 - 0.240 0.218 0.220
1.000 - 1.600 1.180 1.100
1.330 - 1.690 1.524 1.540
2.330 - 2.710 2.486 2.460
3.5 - 3.7 3.6 3.6
0.5 - 0.5 0.5 0.5
CHEMICAL CHAWACTEHISTICS FOU WHITMAN LAKE
STOMEf CODE 3815
2ND SAMPLING I 7/16/74)
2 5>ITES
MANGE
21.9 - 23. b
5.8 - 7.8
501. - 520.
8.3 - 8.7
181. - 186.
0.261 - 0.347
0.235 - 0.259
0.060 - 0.110
0.040 - 0.180
0.800 - 1.100
0.100 - 0.280
0.890 - 1.160
9.0 - 77.2
0.5 - 0.9
MEAN MEDIAN
22.6 22.0
6.0
6.7
509.
8.5
183.
0.316
503.
8.5
182.
0.315
0.243 0.240
0.082 0.090
0.122 0.170
0.880 0.800
0.204 0.260
0.962 0.910
43.1 43.1
0.7 0.7
3RD SAMPLING ( 9/16/74)
2 SITES
rtANGE MEAN MEDIAN
12.4 • 14.5 13.4 13.3
8.6 - 10.0 9.4 9.4
403. - 413. 407. 409.
6.8 - 8.9 8.8 8.8
197. - 238. 223. 228.
0.216 - 0.285 0.24V 0.245
0.131 - 0.150 0.141 0.145
0.020 - 0.020 0.020 0.020
0.030 - 0.100 0.044 0.030
1.200 - 1.900 1.440 1.300
0.050 - 0.120 0.064 0.050
1.220 - 1.920 1.460 1.320
32.1 - 36.9 34.5 34.5
0.5 - 0.6 0.5 0.5
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B. Biological Characteristics:
1. Phytoplankton -
Sampling
Date
04/29/74
07/16/74
09/16/74
2. Chlorophyll a^ -
Sampling
Date
04/29/74
07/16/74
09/16/74
Dominant
Genera
1.
2.
3.
4.
5.
1.
2.
3.
4.
5.
1.
2.
3.
4.
5.
Chlamydomonas sp_.
Cryptomonas sp.
Melosira sj).
Nitzschia sp.
Stephanodiscus sp.
Other genera
Total
Anabaena sp_.
Aphanizomenon sp.
Cryptomonas sp.
Trachelomonas sp_.
Schroederia S£.
Other genera
Total
Aphanizomenon sp.
Anabaena sp_.
Oocystis sp_.
Dactylococcopsis sp_.
Stephanodiscus sp.
Other genera
Algal Units
per ml
163
122
82
82
82
203
734
1,006
931
782
261
186
1.156
4,322
9,542
585
410
176
176
468
Total 11,357
Station
Number
1
2
1
2
1
2
Chlorophyll a
(ug/1)
3.7
3.5
9.0
77.2
32.1
36.9
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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 Maximum yield
Cone, (mg/1) (mg/1-dry wt.)
0.145
0.195
0.195
0.145
1.335
1.335
2.335
2.335
28.8
32.4
60.0
48.6
Spike (mg/1)
Control
0.050 P
0.050 P + 1.0 N
1.0 N
Ortho P
Cone, (mg/1)
0.150
0.200
0.200
0.150
Inorganic N Maximum yield
Cone, (mg/1) (mg/1-dry wt.)
0.222
0.222
1.222
1.222
3.6
3.3
15.1
13.4
2. Discussion -
The control yields of the assay alga, Selenastrum capri-
cornutum. indicate that the potential primary productivity
of Whitman Lake was high at the times the assay samples
were collected (04/29/74 and 09/16/74). Also, significant
increases in yield with the addition of nitrogen alone indi-
cate that the lake was limited by nitrogen at those times.
Note that the addition of phosphorus alone resulted in yields
not significantly greater than those of the controls.
The lake data also indicate nitrogen limitation; i.e.,
the mean inorganic nitrogen to orthophosphorus ratios were
9 to 1 or less each sampling time.
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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 v),
except for the high runoff month of 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
calculated using mean annual concentrations and mean annual flows.
Nutrient loads for unsampled "minor tributaries and immediate
drainage" ("ZZ" of U.S.G.S.) were estimated using the mean concen-
trations in the Middle Branch Forest River at station A-2 and the
mean annual ZZ flow.
A. Waste Sources:
1. Known municipal - None
2. Known industrial - None
-------
9
B. Annual Total Phosphorus Loading - Average Year:
1. Inputs -
kg P/ % of
Source yr total
a. Tributaries (non-point load) -
Middle Branch Forest River 425 88.5
b. Minor tributaries & immediate
drainage (non-point load) 40 8.3
c. Known municipal STP's - None
d. Septic tanks* - 5 1.1
e. Known industrial - None
f. Direct precipitation** - 10 2.1
Total 480 100.0
2. Outputs -
Lake outlet - Middle Branch
Forest River 520
3. Net annual P loss - 40 kg.
* Estimate based on three shoreline picnic areas; see Working Paper No. 175.
** See Working Paper No. 175.
-------
10
C. Annual Total Nitrogen Loading - Average Year:
1. Inputs -
kg N/ % of
Source y_r total
a. Tributaries (non-point load) -
Middle Branch Forest River 4,200 78.6
b. Minor tributaries & immediate
drainage (non-point load) - 410 7.7
c. Known municipal STP's - None
d. Septic tanks* - 105 2.0
e. Known industrial - None
f. Direct precipitation** - 625 11.7
Total 5,340 100.0
2. Outputs -
Lake outlet - Middle Branch
Forest River 5,340
3. Net annual N accumulation - none.
D. Non-point Nutrient Export by Subdrainage Area:
Tributary kg P/km2/yr kg N/km2/yr
Middle Branch Forest River 4 42
* Estimate based on three shoreline picnic areas; see Working Paper No. 175.
** 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/m2/yr 0.83 loss* 9.2 none
Vollenweider phosphorus loadings
(g/m2/yr) based on mean depth and mean
hydraulic retention time of Whitman Lake:
"Dangerous" (eutrophic loading) 0.38
"Permissible" (oligotrophic loading) 0.19
* There was an apparent loss of phosphorus during the sampling year. This
may have been due to sol utilization of previously sedimented phosphorus,
unknown and unsampled point sources discharging directly to the lake, or
underestimation of the minor tributary and immediate drainage load.
-------
12
V. LITERATURE REVIEWED
Henegar, Dale, 1975. Personal communication (lake morphometry).
ND Game & Fish Dept., Bismarck.
Peterson, Norman L., 1974. Personal communication (nutrient
sources in the Whitman Lake drainage basin). ND Dept. of
Health, Bismarck.
, 1975. Personal communication (ND lake
trophic rankings). 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
-------
A*£ DATA TO BE USED IN RANKINGS
A
-------
'ESCENT OP LAKES KITH HIGHER VALUES (NUMBER OF LAKES WITH HIGHE* VALUES)
AKE
,OOE LAKL NAME
IBUl LAKE ASMTABULA
180? LAKE AUDlldON
1803 BWUiH LAKE
IftO* LAKE JAHLING
IA05 DEVILS LAKE
ISOtt JAMESTOWN RESEHVOIR
1807 LAKE LA MOURE
1808 MATEJCEK LAKE
)809 LAKE METIGOSHE
1811 PELICAN LAKE
1812 LAKE SAKAKA4EA (GARRISON
IB1J SPIRIT WOOD LAKE
181* SWEET HRIAR
1815 WHITMAN LAKE
MEDIAN
TOTAL
27 (
69 (
77 (
15 (
0 (
54 (
8 (
38 (
92 <
85 (
100 (
46 (
62 (
27 (
P
3)
9)
10)
2)
0)
7)
1)
5)
12)
11)
13)
6)
8)
3)
MEDIAN
INOWG N
b4 (
46 (
77 (
38 (
69 (
15 <
8 1
0 (
92 1
100 1
62 <
23 I
85 i
31
7)
b)
10)
5)
! 9)
: 2)
! 1>
[ 0)
! 12)
I 13)
I 8)
I 3)
t 11)
( 4)
500-
MEAN
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)
CHLOWA
8 (
69 (
38 I
0 (
. 23 (
62 (
54 (
100 1
85 4
77 <
92 (
31 1
IS I
46 I
1)
9)
5)
0)
3)
8)
7)
13)
11)
: io>
( 12)
! 4)
[ 2)
I 6)
15-
MIN
62 (
46 (
81 (
38 (
15 (
96 (
4 <
23 (
81 1
31 1
54 1
4 1
96 i
69
MEDIAN
00
8>
b)
10)
5)
2)
12)
! 0)
i 3)
1 10)
[ 4)
[ 7)
I 0)
I 12)
( 9)
DISS i
36
69
81
23
0
54.
8
31
81
100
92
46
62
15
OH
(
<
(
(
(
(
(
(
(
(
(
(
(
<
ITHO P
5)
9)
10)
3)
0)
7)
1)
4)
10)
13)
12)
6)
8)
2)
INOtX
NO
204
345
392
137
138
343
151
200
523
493
485
227
374
188
-------
LAKES RANKED sr INDEX NOS.
HANK LAKE CODE LAKE NAME INDE* NO
1 JriO* LAKE MtrioOanE 533
2 3^11 PELICAN LAKL
j jai2 LAKE SAKAKA«EA
* 3803 HRUSH LAKE 392
5 3»l
-------
APPENDIX B
CONVERSION FACTORS
-------
CONVERSION FACTORS
Hectares x 2.471 = acres
Kilometers x 0.6214 = miles
Meters x 3.281 = feet
Cubic meters x 8.107 x 10 = 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
-------
TSlduTARV FLO* TNFOMMATION FOR NORTH DAKOTA
03/16/76
A
-------
APPENDIX D
PHYSICAL and CHEMICAL DATA
-------
,TORET RETRIEVAL OAT£ 76/03/16
331301
43 11 06.0 098 04 30.0 4
•.HITMAN LAKE
33P63 MOUTH UAK01A
HEH^LtS 2111202
0020 FEET DE^TH CLASS
DATE
FROM
TO
74/04/29
74/07/16
74/09/16
DATE
FROM
TO
74/04/29
74/07/16
74/09/16
TIME DEPTH
OF
DAY FEET
10 10 0000
10 10 0005
10 10 0015
14 10 0000
14 10 0005
14 |0 0015
14 20 0000
14 20 0013
14 ?0 0016
TIME DEPTH
OF
OAY FEET
10 10 0000
10 10 0005
10 10 0015
14 10 0000
14 10 0005
14 10 0015
14 20 0000
14 20 0013
14 20 0016
00010
rfATEP
TEMP
CENT
8.7
8.7
8.7
22.0
21. o
21.9
13.8
13.3
12.9
00665
PHOS-TOT
MG/L P
0.260
0.257
0.272
0.347
0.300
0.281
0.285
0.245
0.24b
00300
DO
MG/L
9.0
5.8
6.0
6.0
5.8
10.0
9.0
8.6
32217
CHLRPHYL
A
UG/L
3.7
9.0
32.1
00077
TrtANSP
SECCHI
INCHES
18
36
22
00031
INCDT LT
REMNING
PERCENT
1.0
00094
CNOUCTVY
FIELD
MICROMHO
264
263
265
503
50!
502
413
409
403
00400
PH
SU
7.75
7.75
7.70
8.70
8.40
8.30
8.83
8.83
8.83
00410
T ALK
CAC03
MG/L
98
101
96
182
182
181
228
226
197
00610
NH3-N
TOTAL
MG/L
0.220
0.220
0.240
0.170
0.170
o.iao
0.030
0.030
0.100
00
00625
TOT KJEL
N
MG/L
1.600
1.100
1.000
0.800
0.800
o.aoo
1.900
1.300
1.200
00630
N02&N03
N-TOTAL
MG/L
1.110
1.360
1.450
0.110
0.090
0.090
0.020K
0.020K
0.020
00671
PHOS-UIS
OKTHO
MG/L P
0.184
0.203
0.197
0.259
0.244
0.235
0.148
0.150
0.145
K VALUE KNOWN TO HE
LESS THAN INDICATED
-------
IQftET KtTRlEVAl. UAlt.
381502
43 It 06.0 098 04 30.0 4
WHITMAN LAKF
38C6J NurtTr- UAIVOT4
DATE
FROM
TO
'4/0<»/29
'
-------
APPENDIX E
TRIBUTARY DATA
-------
TCMET RETRIEVAL (J*T£ 76/03/18
OATt TIME DEPTH N02kN03
FWOM OF
TO UAV FEET
'4/09/21
'4/10/21
rs/05/04
rs/os/20
rs/06/23
rs/07/21
75/08/23
10
12
10
11
11
10
0N03
OTAL
G/L
0.060
0.100
0.700
0.130
0.065
0.300
00625
TOT KJEL
N
MG/L
0.600
1.100
2.600
2.400
4.500
1.750
1.750
00610
NH3-N
TOTAL
MG/L
0.015
0.045
0.230
0.017
0.570
0.417
00671
Prios-nis
OKTrtO
MG/L P
0.050
0.103
0.220
0.035
0.270
0.125
0.230
00665
PHOb-TOT
MCa/L >>
0.100
0.115
0.280
0.200
0.440
0.200
0.240
-------
STOnt i
OH i c.
DATE TIME DEPTH NO2&N03
FROM OF
TO DAY FEET
75/05/20 11 15
75/06/23 11 40
75/07/21 11 18
3815A2
48 I* 15.0 098 06 35.0 4
MID riRANCri FOREST RIVER
38 7.5 WHITMAN
T/WHITMAN UAM
SEC RD 342 HROG 5.5 MI N OF WHITMAN
11EPALES 2111204
0000 FEET DEPTH CLASS 00
0630
'&N03
OTAL
IG/L
0.070
0.025
0.005
00625
TOT KJEL
N
MG/L
1.950
1.950
1.400
00610
NH3-N
TOTAL
MG/L
0.020
0.095
0.035
00671
PHOS-DIS
ORTHO
MG/L P
0.015
0.060
0.033
00665
PHOS-TOT
MG/L
------- |