U.S. ENVIRONMENTAL PROTECTION AGENCY
NATIONAL EUTROPHICATION SURVEY
WORKING PAPER SERIES
.
REPORT
ON
VIKING LAKE
MOMWERY COUNTY
IOWA
EPA REGION VII
WORKING PAPER No, 507
CORVALLIS ENVIRONMENTAL RESEARCH LABORATORY - CORVALLIS, OREGON
and
ENVIRONMENTAL MONITORING & SUPPORT LABORATORY - LAS VEGAS, NEVADA
&G.P.O. 699-440
-------
REPORT
ON
VIKING LAKE
MONTGOMERY COUNTY
IOWA
EPA REGION VII
WORKING PAPER No, 507
WITH THE COOPERATION OF THE
IOWA DEPARTMENT OF ENVIRONMENTAL QUALITY
AND THE
IOWA NATIONAL GUARD
AUGUST, 1976
-------
CONTENTS
Page
Foreword ii
List of Iowa Study Lakes 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
-------
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 eutroph-ication 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 Iowa Department of Environ-
mental Quality for professional involvement, to the Iowa National
Guard for conducting the tributary sampling phase of the Survey,
and to those wastewater treatment plant operators who voluntarily
provided effluent samples and flow data.
The staff of the Water Quality Division of the Department of
Environmental Quality 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 Joseph G. May, the Adjutant General of Iowa,
and Project Officer Colonel Cleadeth P. Woods, who directed the
volunteer efforts of the Iowa National Guardsmen, are also grate-
fully acknowledged for their assistance to the Survey.
-------
IV
LAKE NAME
Ahquabi
Big Creek Reservoir
Black Hawk
Clear
Darl ing
Lost Island
MacBride
Prairie Rose
Rathbun Reservoir
Red Rock Reservoir
Rock Creek
Silver
Spirit
Vi king
West Okoboji
NATIONAL EUTROPHICATION SURVEY
STUDY LAKES
STATE OF IOWA
COUNTY
Warren
Polk
Sac
Cerro Gordo
Washington
Clay, Palo Alto
Johnson
Shelby
Appanoose, Wayne
Marion
Jasper
Worth
Dickinson
Montgomery
Dickinson
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95*04
VIKING LAKE
(£> Tributary Sampling Site
X Lake Sampling Site
Scale
1M1-
-------
VIKING LAKE
STORE! NO. 1914
I. CONCLUSIONS
A. Trophic Condition:
Survey data indicate that Viking Lake is eutrophic. This
lake ranked eleventh in overall trophic quality when the 15
Iowa lakes and reservoirs sampled in 1974 were compared using
a combination of six parameters*. Nine of the water bodies had
less median total phosphorus, nine had less and one had the same
median dissolved phosphorus, four had less and one had the same
median inorganic nitrogen, 11 had less mean chlorophyll a^, and
five had greater mean Secchi disc transparency. Marked depression
of dissolved oxygen with depth occurred in July.
The field limnologists noted an algal bloom in the open-water
areas in September.
B. Rate-Limiting Nutrient:
There was a significant change in nutrients in the sample
from the time of collection to the beginning of the assay.
Therefore, the results are not considered representative of
conditions in the lake at the time the sample was taken (04/17/74).
The lake data indicate nitrogen limitation in April and Sep-
tember.
* See Appendix A.
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2
C. Nutrient Controllability:
1. Point sourcesThere were no known point sources
impacting Viking Lake during the sampling year, although
lakeshore park facilities may provide direct nutrient inputs
to the lake.
The present loading of 0.49 g/m2/year is somewhat more
than that proposed by Vollenweider (Volleweider and Dillon,
1974) as a eutrophic loading (see page 11). However, the
present trophic quality probably will be maintained if the
phosphorus loading is not increased.
2. Non-point sourcesThe phosphorus contribution of
the gaged tributary amounted to 10.0% of the total load reaching
Viking Lake during the sampling year. The estimated phosphorus
load from the ungaged drainage areas amounted to 86.7% of the
total load; however, the nutrient loads from these areas were
estimated using the loads in only one gaged tributary (see page
10), and more data are needed to determine the actual significance
of the nutrient contributions.
-------
II. LAKE AND DRAINAGE BASIN CHARACTERISTICS1"
A. Lake Morphometry :
1. Surface area: 0.61 kilometers2.
2. Mean depth: 5.8 meters.
3. Maximum depth: 12.5 meters.
4. Volume: 3.538 x 106 m3.
5. Mean hydraulic retention time: 1.6 years.
B. Tributary and Outlet:
(See Appendix C for flow data)
1. Tributaries -
Drainage Mean flow
Name area (km2)* (m3/sec)*
Unnamed Creek B-l 1.0 0.01
Minor tributaries &
immediate drainage - 8.7 0.06
Totals 9.7 0.07
2. Outlet -
Unnamed Creek A-l 10.3** 0.07
C. Precipitation***:
1. Year of sampling: 74.2 centimeters.
2. Mean annual: 87.2 centimeters.
t Table of metric conversionsAppendix B.
tt Harrison, 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
Viking 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 a
number of depths at one station on the lake (see map, page v). During
each visit, a single depth-integrated (4.6 m to surface) sample was
collected for phytoplankton identification and enumeration; a similar
sample was taken for chlorophyll a_ analysis. During the first visit,
a single 18.9 liter depth-integrated sample was collected for algal
assays. The maximum depth sampled was 11.0 meters.
The sampling results are presented in full in Appendix D and are
summarized in the following table (the July nutrient samples were
not preserved properly and were not analyzed).
-------
PARAMETER
TEMP
DISS OXY (MGXL)
CNDCTVY (MCROMO)
PH (STAND UNITS)
TOT ALK
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)
CHLKPYL A (UG/L)
SECCHI (METERS)
A. SUMMARY OF PHYSICAL AND CHEMICAL CHARACTERISTICS FOR VIKING LAKE
STORET CODE
1ST SAMPLING ( 4/17/74)
1 SITE
2ND SAMPLING ( 7/ 2/74)
1 SITE
3RD SAMPLING ( 9/25/74)
1 SITE
RANGE MEAN MEDIAN RANGE MEAN MEDIAN
9.5 - 11.3 10.7 11.0 18.0 - 24.7 23.3 24.6
10.0 - 10. 8 10.3 10.0 0.8 - 7.6 6.0 7.2
64. - 191. 138. 148. 299. - 302. 300. 300.
»»*« -***»«*»«*«« 7.7 . 9.5 a.3 8.4
0.030
0.011
0.070
0.060
0.700
0.130
0.790
29.8
0.7
- uc*
- 0.034
- 0.017
- 0.100
- 0.070
- 1.000
0.170
- 1.070
- 29.8
0.7
101.
0.032
0.014
0.090
0.062
0.850
0.152
0.940
29.8
0.7
g.060 _***»*»***«»**
29.8 15.4 - 15.4 15.4 15.4
0.7 1.5 - 1.5 1.5 1.5
RANGE
17.1 - 18.5
6.6 - 8.6
219. - 225.
7.8 - 8.3
075
0.017
0.020
0.060
1.000
1.020
32.9
0.9
0.018
- 0.100
- 0.120
- 1.500
- 0.220
- 1.520
- 32.9
0.9
MEAN
17.5
7.2
220.
8.0
0.080
0.018
0.042
0.082
1.180
0.124
1.222
32.9
0.9
MEDIAN
17.3
6.8
219.
7.9
0.018
0.020
0.080
1. 100
0.110
1.120
32.9
0.9
-------
B. Biological characteristics:
1. Phytoplankton -
Sampling
Date
04/17/74
07/02/74
09/25/74
Dominant
Genera
1.
2.
3.
4.
5.
1.
2.
3.
4.
5.
1.
2.
3.
4.
5.
Asterionella sp.
Aphanizomenon sp.
Flagellates
Dinobryon sp.
Cryptomonas sp.
Other genera
Total
Frag il aria sp.
Anabaena sp.
Aphanizomenon sp.
Cryptomonas sp.
Schroederia sj).
Other genera
Total
Coelosphaerium sp.
Frag el 1 ates
Aphanizomenon sp.
Microcystis sp.
Anabaena sp.
Other genera
Algal Units
per ml
49,981
3,617
767
329
219
110
55,023
1,719
700
641
262
233
389
3,944
1,684
1,500
398
184
183
306
2. Chlorophyll a_ -
Sampli ng
Date
04/17/74
07/02/74
09/25/74
Total
Station
Number
1
1
1
4,255
Chlorophyll a
(yg/D
29.8
15.4
32.9
-------
7
C. Limiting Nutrient Study:
There was a significant change in nutrients in the algal
assay sample from the time of collection to the beginning of the
assay. Therefore, the results are not considered representative
of conditions in the lake at the time of sampling (04/17/74).
The lake data indicate nitrogen limitation in April and
September; i.e., the mean inorganic nitrogen to orthophosphorus
ratios were 11 to 1 and 7 to 1, respectively.
-------
8
IV. NUTRIENT LOADINGS
(See Appendix E for data)
For the determination of nutrient loadings, the Iowa 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, May, and June when two samples were collected.
Sampling was begun in August, 1974, and was completed in July, 1975.
Through an interagency agreement, stream flow estimates for the
year of sampling and a "normalized" or average year were provided by
the Iowa 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 B-l, in kg/km2/year, and multiplying by the ZZ area in km2.
No known point sources impacted Viking Lake during the sampling
year.
* See Working Paper No. 175.
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9
A. Waste Sources:
1. Known municipal - None
2. Known industrial - None
B. Annual Total Phosphorus Loading - Average Year:
1. Inputs -
kg P/ % of
Source ^r total
a. Tributaries (non-point load) -
Unnamed Stream B-l 30 10.0
b. Minor tributaries & immediate
drainage (non-point load) - 260 86.7
c. Known municipal STP's - None
d. Septic tanks - Unknown ?
e. Known industrial - None
f. Direct precipitation* - 10 3.3
Total 300 100.0
2. Outputs -
Lake outlet - Unnamed Stream A-l 170
3. Net annual P accumulation - 130 kg.
* See Working Paper No. 175.
-------
10
C. Annual Total Nitrogen Loading - Average Year:
1. Inputs -
Source
kg N/
yr
a. Tributaries (non-point load) -
Unnamed Stream B-l 385
b. Minor tributaries & immediate
drainage (non-point load) - 3,350
c. Known municipal STP's - None
d. Septic tanks - Unknown ?
e. Known industrial - None
f. Direct precipitation* - 660
Total 4,395
2. Outputs -
Lake outlet - Unnamed Stream A-l 2,785
.3. Net annual N accumulation - 1,610 kg.
D. Non-point Nutrient Export by Subdrainage Area:
Tributary kg P/km2/yr
Unnamed Stream B-l 30
E. Mean Nutrient Concentrations in Ungaged Stream;
Tributary
Unnamed Stream C-l
Mean Total P
Cone, (mg/1)
0.127
% of
total
8.8
76.2
15.0
100.0
kg N/km2/yr
385
Mean Total N
Cone, (mg/1)
1.513
* 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 0.49 0.21 7.2 2.6
Vollenweider phosphorus loadings
(g/m2/yr) based on mean depth and mean
hydraulic retention time of Viking Lake:
"Dangerous" (eutrophic loading) 0.38
"Permissible" (oligotrophic loading) 0.19
-------
12
V. LITERATURE REVIEWED
Harrison, Harry, 1975. Personal communication (lake morphometry),
IA Cons. Comm., Des Moines.
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
APPENDIX A
LAKE RANKINGS
-------
LAKE DATA TO BE USED IN RANKINGS
LAKE
CODE LAKE NAME
1901 LAKE ACOUAdl
1902 8IG CREEK RESERVOIR
1903 BLACK HAWK LAKE
1904 CLEAR LAKE
1905 LAKE DARLING
1906 LOST ISLAND LAKE
1907 LAKE MACBRIDE
1908 PRAIRIE ROSE LAKE
1909 RATHBUN RESERVOIR
1910 RED ROCK LAKE
1911 ROCK CREEK LAKE
1912 SILVER LAKE
1913 SPIRIT LAKE
1914 VIKING LAKE
1915 WEST LAKE OKOBOJI
MEDIAN
TOTAL ^
0.062
0.046
0.185
0.059
0.077
0.146
0.061
0.056
0.071
0.180
0.065
0.193
0.041
0.075
0.046
MEDIAN
INO«G N
0.3J5
6.465
0.130
0.070
1.475
0.065
2.035
0.210
1.170
1.880
1.400
0.565
0.090
0.130
0.060
500-
MEAN SEC
469.333
438.500
488.167
465.125
482.500
421.167
458.444
463.667
475.889
473.400
480.500
482.667
422.667
459.000
380.444
MEAN
CHLOHA
8.600
16.867
49.740
17.400
13.817
36.100
17.067
17.350
12.039
14.730
18.367
95.300
12.622
26.033
7.722
15-
MIN DO
8.200
14.800
15.000
8.600
9.200
8.400
15.000
8.600
14.000
14.000
8.400
10.000
9.000
14.200
15.000
MEDIAN
OISS OKTnO P
0.009
0.011
0.020
0.010
0.012
0.021
0.010
0.010
0.008
0.104
0.007
0.034
0.007
0.017
0.017
-------
PERCENT OF LAKES WITH HIGHER VALUES (NUMBER OF LAKES WITH HIGHER VALUES)
LAKE
CODE LAKE NAME
1901 LAKE ACOUAdI
1902 BIG CREEK RESERVOIR
1903 BLACK HAWK LAKE
1904 CLEAR LAKE
1905 LAKE OASLING
1906 LOST ISLAND LAKE
1907 LAKE M4C8HIDE
1908 PRAIRIE ROSE LAKE
1909 RATHBUN RESERVOIR
1910 RED ROCK LAKE
1911 ROCK CREEK LAKE
1912 SILVER LAKE
1913 SPIRIT LAKE
191<» VIKING LAKE
1915 WEST LAKE
MEDIAN
TOTAL P
57 (
89 (
7 t
71 (
29 (
21 (
64 <
79 (
43 (
1* (
50 (
0 (
100 (
36 (
89 (
8)
12)
1)
10)
4)
3)
9)
11)
6)
2)
7)
0)
14)
5)
12)
MEDIAN
INO*G N
50
0
68
86
21
93
7
57
36
14
29
43
79
68
100
( 7)
( 0)
( 9)
( 12)
( 3)
( 13)
( 1)
( 8)
( 5)
< 2)
( 4)
( 6)
( 11)
( 9)
( 14)
500-
MEAN SEC
43 (
79 (
0 (
50 (
14 (
93 (
71 (
57 (
29 (
36 (
21 (
7 (
86 (
64 (
100 (
6)
11)
0)
7)
2)
13)
10)
8)
4)
5)
3)
1)
12)
9)
14)
MEAN
CHLORA
93 (
57 (
7 (
J6 (
71 (
!<* <
50 <
43 (
86 (
64 (
29 (
0 (
79 (
21 (
100 (
13)
8)
1)
5)
10)
2)
7)
6)
12)
9)
4)
0)
11>
3)
14)
15-
MIN DO
100 (
21 (
7 (
75 (
57 (
89 (
7 (
75 (
39 (
39 (
89 (
50 (
64 (
29 (
7 (
14)
3)
0)
10)
8)
12)
0)
10)
5)
5)
12)
7)
9)
4)
0)
MEDIAN
DISS ORThO P
79 (
50 (
21 (
64 (
43 (
14 (
64 (
64 (
86 (
0 (
96 (
7 (
96 (
32 (
32 (
11)
7)
3)
6)
6)
2)
8)
8)
12)
0)
13)
1)
13)
4)
4)
INDEX
NO
422
296
110
382
235
324
263
375
319
167
314
107
504
250
428
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LAKES RANKED BY INDEX NOS.
RANK LAKE CODE LAKE NAME INDEX NO
1 1913 SPIRIT LAKE 504
2 1915 WEST LAKE OK080JI 428
3 1901 LAKE ACOUABI 422
4 1904 CLEAR LAKE 382
5 1908 PRAIRIE ROSE LAKE 375
6 1906 LOST ISLAND LAKE 324
7 1909 RATHBUN RESERVOIR 319
8 1911 ROCK CREEK LAKE 3J4
9 1902 BIG CREEK RESERVOIR 296
10 1907 LAKE MACBRIDE 263
11 1914 VIKING LAKE 250
12 1905 LAKE DARLING 235
13 1910 RED ROCK LAKE 167
14 1903 BLACK HAWK LAKE 110
15 1912 SILVER LAKE 107
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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 IOWA
12/23/75
LAKE CODE 1914
VIKING LAKE
SUB-DRAINAGE
TRIBUTARY AREA(SO KM)
1914A1
1914B1
1914ZZ
10.3
1.0
9.3
OF LAKE (SO KM) 10.
JAN
0.03
0.00
0.02
FEB
0.04
0.00
0.04
MAR
0.10
0.01
0.09
.3
AHR
0.
0.
0.
05
01
05
MAY
0.08
0.01
0.07
NORMALIZED FLOWS (CMS)
JUN JUL AUG
0.31
0.03
0.28
0.05
0.00
0.04
0.04
0.00
0.04
SEP
0.06
0.01
0.06
OCT NOV DEC
0.02 0.03 0.02
0.00 0.00 0.00
0.02 0.02 0.01
MEAN
0.07
0.01
0.06
SUMMARY
rOTAL
;UM OF
DRAINAGE AREA OF LAKE =
SUB-DRAINAGE AREAS
10.3
10.3
TOTAL FLOW
TOTAL FLOW
IN =
OUT =
0.83
0.83
MEAN MONTHLY FLOWS AND DAILY FLOWS(CMS)
TRIBUTARY MONTH YEAR
1914A1
191481
19I4ZZ
8
9
10
11
12
1
2
3
4
5
6
7
a
9
10
11
12
' 1
2
3
4
5
6
7
8
9
10
11
12
1
2
3
4
5
6
7
74
74
74
74
74
75
75
75
75
75
75
75
74
74
74
74
74
75
75
75
75
75
75
75
74
74
74
74
74
75
75
75
75
75
75
75
MEAN FLO* DAY
0.0
0.00
0.00
0.00
0.00
0.00
0.01
0.12
0.06
0.02
0.05
0.01
0.0
0.0
0.0
0.0
0.0
0.0
c.oo
0.01
0.01
0.00
0.01
0.00
0.0
0.00
0.00
0.00
0.00
0.00
0.01
0.12
0.06
0.02
0.05
0.01
17
6
6
3
16
6
a
a
6
4
6
9
17
6
6
3
16
6
8
a
6
4
6
9
FLOW DAY
0.0
0.00
o.ob
0.00
0.00
0.00
0.02
0.02
0.06
0.03
0.01
0.02
0.0
0.0
0.0
0.0
0.0
0.0
0.00
0.00
0.01
0.00
0.00
0.00
FLOW DAY
FLOW
-------
APPENDIX D
PHYSICAL and CHEMICAL DATA
-------
STORET RETRIEVAL DATE 76/01/36
40 56 00.0 095 02 00.0
VIKING LAKE
32027 IOWA
DATE
FROM
TO
74/04/17
74/07/02
74/09/25
DATE
FROM
TO
74/04/17
74/07/02
74/09/25
TIME DEPTH
OF
DAY FEET
15
15
15
15
13
13
13
13
13
14
14
14
14
14
05
05
05
05
45
45
45
45
45
10
10
10
10
10
0000
0005
0015
0025
0000
0005
0010
0020
0025
0000
0005
0015
0025
0036
TIME DEPTH
OF
DAY
15
15
15
IS
13
14
14
14
14
14
14
FEET
05
05
05
05
45
10
10
10
10
10
10
0000
0005
0015
0025
0000
0000
0003
0005
0015
0025
0036
00010
MATER
TEMP
CENT
11.3
11.3
10.8
9.5
?4.7
24.7
24.6
34.5
18.0
18.5
17.6
17.3
17.2
17.1
00665
PHOS-TOT
MG/L P
0.034
0.032
0.033
0.030
0.091
0.082
0.075
0.077
0.077
00300
DO
MG/L
10
10
10
7
7
7
7
0
8
7
6
6
6
32217
00077 00094
TRANSP CNDUCTVY
SECCHI FIELD
INCHES MICROMHO
29
8
0
0
<> 60
t
2
a
8
6 34
2
8
6
6
00031
64
108
188
191
302
300
300
299
299
225
219
219
219
219
11EPALES 2111202
3 0028 FEET DEPTH
00400 00410 00610 00625 00630 00671
PH T ALK NH3-N TOT KJEL N02&N03 PHOS-OIS
CAC03 TOTAL N N-TOTAL ORTHO
SU MG/L MG/L MG/L MG/L MG/L P
8
8
8
8
7
8
8
7
7
7
.50
.40
.40
.30
.70
.33
.01
.93
.89
.85
132 0.060 1.000 0.070 0.017
132 0.060 0.700 0.090 0.012
132 0.060 0.900 0.100 0.011
126 0.070 0.800 0.100 0.017
120 0.060 1.500 0.020 0.018
117 0.060 1.300 0.050 0.018
116 0.080 1.100 0.020 0.018
116 0.090 1.000 0.020K 0.017
120 0.120 1.000 0.100 0.018
CHLRPHYL INCOT LT
A
UG/L
29
15
32
REMNING
PERCENT
8
4
9
1.0
K VALUE KNOWN TO 8E
LESS THAN INDICATED
-------
APPENDIX E
TRIBUTARY DATA
-------
STORE! RETRIEVAL DATE 76/01/27
1914A1
40 59 00.0 095 02 00.0
UNNAMED CREEK
19059 MONTGOMERY CO MP
0/VIKING LAKE
MED DTY RD BRDG AT W EDGE VIKING LK PARK
11EPALES 2111204
4 0000 FEET DEPTH
DATE
FROM
TO
74/08/17
74/09/06
74/10/06
74/11/03
74/12/16
75/01/06
75/02/22
75/03/08
75/04/06
75/04/24
75/05/04
75/05/20
75/06/06
75/06/28
75/07/09
00630 00625
TIME DEPTH N02&N03 TOT KJEL
OF N-TOTAL N
DAY FEET
10
19
09
09
12
17
17
14
17
16
09
17
17
08
18
30
00
10
30
00
15
00
35
15
00
30
10
00
45
00
MG/L
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
.016
.024
.008
.016
.200
.016
.015
.250
.115
.015
.025
.030
.020
.005
.025
MG/L
0.900
0.600
1.100
0.800
0.600
0.700
0.900
2.500
1.400
0.750
0.750
0.800
0.900
1.350
0.850
00610 00671 00665
NH3-N PHOS-DIS PHOS-TOT
TOTAL ORTHO
MG/L
0,
0.
0,
0.
0.
0.
0,
0.
0.
.015
.015
.030
.040
.090
.056
.224
.330
.035
0.025
0.
0.
0.
0.
Or
.040
.045
.025
.035
.105
MG/L P
0.040
0.030
0.045
0.045
0.012
0.015
0.008
0.040
0.025
0.010
0.037
0.045
0.045
0.015
0.035
MG/L P
0.145
0.065
0.045
0.090
0.040
0.110
0.080
0.260
0.060
0.050
0.050
0.150
0.120
0.070
0.090
-------
STORE! RETRIEVAL DATE 76/01/27
1914B1
40 58 40.0 095 03 00.0
UNNAMED CREEK
19 MONTGOMERY CO MP
T/VIKING LAKE
VIKING LK PRK RD CLVRT 3 MI E OF STANTON
11EPALES 2111204
4 0000 FEET DEPTH
DATE
FROM
TO
74/11/03
75/01/06
75/04/06
75/04/24
75/05/04
75/05/20
75/06/06
75/06/28
TIME DEPTH
OF
DAY FEET
09 15
18 00
16 45
16 30
10 30
17 30
17 30
09 15
00630
N02&N03
N-TOTAL
MG/L
0.672
1.160
1.300
0.060
0.375
0.300
0.002
0.480
00625
TOT KJEL
N
MG/L
2.100
1.400
0.750
0.750
0.750
2.600
2.000
0.825
00610
NH3-N
TOTAL
MG/L
0.115
0*368
0.032
0.030
0.110
0.075
0.035
0.070
00671
PHOS-DIS
ORTHO
MG/L P
0.130
0.095
0.090
0.125
0.060
0.110
0.070
0.130
00665
PHOS-TOT
MG/L P
0.310
0.140
0.130
0.180
0.120
0.420
0.110
0.220
-------
STORET RETRIEVAL DATE 76/01/27
1914C1
40 59 20.0 095 02 50.0
UNNAMED CREEK
19 MONTGOMERY CO MP
T/VIKING LAKE
HWY 34 CULVERT 3.0 MI E OF STANTON
11EPALES 2111204
4 0000 FEET DEPTH
DATE
FROM
TO
75/01/06
75/02/22
75/03/08
75/04/06
75/04/24
75/05/04
75/05/20
75/06/06
75/06/28
75/07/09
TIME DEPTH
OF
DAY FEET
17 45
17 15
If 30
17 05
16 15
09 45
17 20
17 15
09 00
18 30
00630
N02&N03
N-TOTAL
MG/L
0.072
0.200
0.490
0.260
0.950
0.080
0.020
0.095
0.005
0.010
00625
TOT KJEL
N
MG/L
1.200
0.900
1.130
0.900
1.650
0.650
2.700
1.100
1.300
00610
NH3-N
TOTAL
MG/L
0.064
0.080
0.180
0.040
0.315
0.095
0.045
0.055
0.035
0.095
00671
PHOS-DIS
ORTHO
MG/L P
0.010
0.008
0.010
0.010
0.045
0.010
0.087
0.055
0.070
0.075
00665
PHOS-TOT
MG/L P
0.030
0.020
0.030
0.060
0.150
0.020
0.460
0.150
0.160
0.190
------- |