U.S. ENVIRONMENTAL PROTECTION AGENCY
NATIONAL EUTROPHICATION SURVEY
WORKING PAPER SERIES
REPORT
ON
BRANCHED OAK RESERVOIR
LANCASTER COIMTY
NEBRASKA
EPA REGION VII
WORKING PAPER No, 554
CORVALLIS ENVIRONMENTAL RESEARCH LABORATORY - CORVALLIS, OREGON
and
ENVIRONMENTAL MONITORING & SUPPORT LABORATORY - LAS VEGAS, NEVADA
•&G.V.O. 699-440
-------
REPORT
ON
BRANCHED OAK ESERVDIR
LANCASTER COIMTY
NEBRASKA
EPA REGION VII
WORKING PAPER No, 554
WITH THE COOPERATION OF THE
NEBRASKA DEPARTMENT OF ENVIRONMENTAL CONTROL
AND THE
NEBRASKA NATIONAL GUARD
AUGUST, 1976
-------
CONTENTS
Page
Foreword ii
List of Nebraska Study 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
-------
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.
-------
Ill
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 Nebraska Department of
Environmental Control for professional involvement, to the
Nebraska 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 Pollution Control Division, Department
of Environmental Control, 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 Francis L. Winner, the Adjutant General of Nebraska,
and Project Officer Colonel Burl M. Johnson, who directed the volun-
teer efforts of the Nebraska National Guardsmen, are also gratefully
acknowledged for their assistance to the Survey.
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IV
NATIONAL EUTROPHICATION SURVEY
STATE OF NEBRASKA
RESERVOIR NAME COUNTY
Branched Oak Lancaster
Harlan County Harlan
Harry D. Strunk Frontier
Hugh Butler Frontier, Red Willow
Johnson Dawson, Gosper
McConaughy Keith
Pawnee Lancaster
Sherman Sherman
Swanson Hitchcock
-------
41 10 —
BRANCHED OAK RESERVOIR
<8> Tributary Sampling Site
X Lake Sampling Site
Drainage Area Boundary
Land Subject to Inundation
-------
BRANCHED OAK RESERVOIR
STORE! NO. 3101
I. CONCLUSIONS
A. Trophic Condition:
Survey data indicate that Branched Oak Reservoir is eutro-
phic. It ranked second in overall trophic quality when
the nine Nebraska reservoirs sampled in 1974 were compared using a
combination of six parameters*. One of the other reservoirs had
less median total phosphorus, three had less median dissolved phos-
phorus, none of the others had less median inorganic nitrogen,
six had less mean chlorophyll a_, and three had greater mean Secchi
disc transparency. Survey limnologists noted a phytoplankton
bloom in progress at station 1 in April.
Branched Oak Reservoir receives runoff water high in dissolved
nutrients principally from cultivated farmland, and the reservoir
has had symptoms of eutrophy since the second year of impoundment
(Hammer and Hergenrader, 1974).
B. Rate-Limiting Nutrient:
Because of nutrient losses in the samples, the algal assay
results are not considered indicative of conditions in the reser-
voir at the times of sampling (04/17/74 and 09/26/74). The reser-
voir data indicate nitrogen limitation at both sampling times.
C. Nutrient Controllability:
1. Point sources—No known point sources impacted Branched
* See Appendix A.
-------
2
Oak Reservoir during the sampling year. Nonetheless, the
present phosphorus loading of 0.72 g/m2/yr is more than twice
that proposed by Vollenweider (Vollenweider and Dillon, 1974)
as a eutrophic loading (see page 11). Any reduction of nutrient
inputs to the reservoir will require control of non-point source
contributions (see below).
2. Non-point sources—The phosphorus loads of the two gaged
tributaries amounted to 63.5% of the total load reaching the
reservoir. The estimated phosphorus load of the ungaged streams
amounted to 34.1% of the total load.
Because of the lack of point sources and the agricultural
practices in the watershed (Sheets, 1975), reduction of nutrient
inputs is dependent on improved land-use practices in the drainage
area.
The phosphorus export rates of Oak and Middle Oak creeks (see
page 10) compare well with those of unimpacted Middle Creek and
Unnamed Stream B-l, tributaries of nearby Pawnee Reservoir* (26
kg/km2/yr).
Working Paper No. 560.
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II. LAKE AND DRAINAGE BASIN CHARACTERISTICS1"
A. Lake Morphometry :
1. Surface area: 7.28 kilometers2.
2. Mean depth: 5.5 meters.
3. Maximum depth: 11.0 meters.
4. Volume: 40.040 x 106 m3.
5. Mean hydraulic retention time: 2.8 years (based on outflow),
B. Tributary and Outlet:
(See Appendix C for flow data)
1. Tributaries -
Drainage Mean flow
Name area (km2)* (m3/sec)*
Oak Creek 73.8 0.26
Middle Oak Creek 60.6 0.22
Minor tributaries &
immediate drainage - 73.0 0.28
Totals 207.4 0.76
2. Outlet -
Oak Creek 214.7** 0.46
C. Precipitation***:
1. Year of sampling: 60.4 centimeters.
2. Mean annual: 67.7 centimeters.
t Table of metric conversions—Appendix B.
tt Adamovich, 1975; Hartung, 1974.
* For limits of accuracy, see Working Paper No. 175, "...Survey Methods,
1973-1976".
** Includes area of reservoir.
*** See Working Paper No. 175.
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4
III. LAKE WATER QUALITY SUMMARY
Branched Oak Reservoir 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 three stations on the reservoir and from a number of depths
at each station (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 third 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 10.7 meters at station 1, 7.6 meters at station 2,
and 6.1 meters at station 3.
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).
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A. SUMMARY OF PHYSICAL AND CHEMICAL CHARACTERISTICS FOR BRANCHED OAK
STORET CODE 3101
PARAMETER
TEMP (C)
DISS OXY (MG/L)
CNDCTVY (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)
1ST SAMPLING ( 4/17/74)
3 SITES
2ND SAMPLING ( 7/ 2/74)
3 SITES
RANGE
9.1
10.2
343.
218.
0 .025
0.004
0.020
0.020
0.600
0/\f. n
• UHU
0.660
10.4
1.4
9.7
- 10.6
- 348.
- 226.
~ 0.044
- 0.013
- 0.060
~ 0.050
•" 0.900
v n 1 1 n
0 . 1 10
- 0.950
- 12.9
1.4
MEAN
9.4
10.5
346.
222.
0*031
0.009
0.045
0.038
0.782
Oft B i
• OB J
0.826
11.4
1.4
MEDIAN
9.4
10.6
345.
222.
0.030
0.009
0.050
0.040
0. 800
0 .090
0.840
11.0
1.4
RANGE MEAN
22.7 - 23.5 23.2
5.6 - 6.2 5.9
468. - 475. 472.
MEDIAN
23.4
6.0
471.
7.8 - 8.0 7.8 f.o
oooooo -eo«e«oeooeaa«a»e*«o*»*
eoaeao .aooaeooooeaooooaoaoooo
«««**« -»«00»000»»tt»»»»OOOO»«t«
6.4 - 27.5 14.6
0.9 - 0.9 0.9
9.8
0.9
0.9 -
1.1
0.081
0.044
0.910
0.125
0.991
25.1
1.0
8.5
406.
7.8
274.
3RD SAMPLING ( 9/26/74)
3 SITES
RANGE
17.1 - 18.1
7.4 - 9.2
403. - 412.
7.7 - 7.8
242. - 290.
0.059 - 0.096
0.023 - 0.030
0.020 - 0.620
0.040 - 0.050
0.700 - 1.200
0.060 - 0.670
0.720 - 1.520
21.1 - 32.1
MEAN MEDIAN
17.5 17.3
8.5
407.
7.8
271.
0.076 0.078
0.026 0.025
0.020
0.040
0.900
0.060
0.970
22.1
1.1
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B. Biological characteristics:
1. Phytoplankton -
Sampling
Date
04/17/74
07/02/74
09/26/74
2. Chlorophyll a_ -
Sampling
Date
04/17/74
07/02/74
09/26/74
Dominant
Genera
1. Asterionella sp.
2. Flagellates
3. Dinobryon sp.
4. Cryptomonas sp.
5. Ankistrodesmus sp.
Other genera
Total
Car ten'a sp.
Flagellates
Cryptomonas sp.
Cysts
Aphanizomenon sp.
Other genera
Total
1. Melosira sp.
2. Cryptomonas sp.
3. Aphanizomenon sp.
4. Flagellates
5. Coelosphaerium sp.
Other genera
Total
Algal Units
per ml
15,728
2
1,
192
334
572
191
381
20,398
1.
2.
3.
4.
5.
1
,541
572
396
308
220
926
Station
Number
1
2
3
1
2
3
1
2
3
3,963
5,603
580
515
322
258
773
8,051
Chlorophyll a
(ug/D
10.4
11.0
12.9
27.5
9.8
6.4
22.1
32.1
21.1
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7
C. Limiting Nutrient Study:
There was a significant change in nutrients in the algal
assay samples from the time of collection to the beginning of
the assays. Therefore, the results are not considered repre-
sentative of conditions in the reservoir at the times of sam-
pling.
The reservoir data indicate nitrogen limitation; i.e., the
mean inorganic nitrogen to orthophosphorus ratios were less
than 10 to 1 both sampling times, and nitrogen limitation would
be expected.
-------
IV. NUTRIENT LOADINGS
(See Appendix E for data)
For the determination of nutrient loadings, the Nebraska 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 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 Nebraska District Office of the U.S. Geological Survey for the
tributary sites nearest the reservoir.
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 shown are
those measured minus point-source loads, if any.
Nutrient loads for unsampled "minor tributaries and immediate
drainage" ("ZZ" of U.S.G.S.) were estimated using the means of the
nutrient loads, in kg/km2/year, at stations A-2 and B-l and multiplying
the means by the ZZ area in km2.
No known point sources impacted Branched Oak Reservoir during the
Survey 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 yr total
a. Tributaries (non-point load) -
Oak Creek 1,955 37.2
Middle Oak Creek 1,380 26.3
b. Minor tributaries & immediate
drainage (non-point load) - 1,790 34.1
c. Known municipal STP's - None
d. Septic tanks - None
e. Known industrial - None
f. Direct precipitation* - 125 2.4
Total 5,250 100.0
2. Outputs -
Lake outlet - Oak Creek 1,035
3. Net annual P accumulation - 4,215 kg.
* See Working Paper No. 175.
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10
C. Annual Total Nitrogen Loading - Average Year:
1. Inputs -
kg N/
Source yj;
a. Tributaries (non-point load) -
Oak Creek 15,670
Middle Oak Creek 15,290
b. Minor tributaries & immediate
drainage (non-point load) - 16,935
c. Known municipal STP's - None
d. Septic tanks - None
e. Known industrial - None
f. Direct precipitation* - 7,860
Total 55,755
2. Outputs -
Lake outlet - Oak Creek 16,065
3. Net annual N accumulation - 39,690 kg.
D. Non-point Nutrient Export by Subdrainage Area:
Tributary kg P/km2/yr
Oak Creek
Middle Oak Creek
26
23
E. Mean Nutrient Concentrations in Ungaged Streams:
Tributary
Oak Creek (station A-3)
Unnamed Stream C-l
Mean Total P
Cone, (mg/1)
0.206
0.248
% of
total
28.1
27.4
30.4
14.1
100.0
kg N/km2/yr
212
252
Mean Total N
Cone, (mg/1)
2.069
2.779
* See Working Paper No. 175.
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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.
Tot a 1[ P hosjjhorus Total Nitrogen
TotaH Accumulated Total Accumulated
grams/m2/yr 0.72 0.58 7.7 5.5
Vollenweider phosphorus loadings
(g/m2/yr) based on mean depth and mean
hydraulic retention time of Branched Oak Reservoir:
"Dangerous" (eutrophic loading) 0.28
"Permissible" (oligotrophic loading) 0.14
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12
V. LITERATURE REVIEWED
Adamovich, Ted, 1975. Personal conmunication (reservoir mor-
phometry). NE Dept. of Environ. Contr., Lincoln.
Hammer, Mark J., and Gary L. Hergenrader, 1974. Eutrophication
of small reservoirs in eastern Nebraska. Trans. NE Acad.
Sci., vol II.
Hartung, Ray, 1974. Personal communication (reservoir morphometry).
NE Dept. of Environ. Contr., Lincoln.
Hergenrader, Gary L., and Mark J. Hammer, 1973. Eutrophication of
small reservoirs in the Great Plains. In: Man-made lakes:
Their problems and environmental effects (W. C. Ackerman, G. F.
White, & E. B. Worthington, eds\). Geophys. Monogr. Ser.,
vol. 17.
Sheets, Wes, 1975. Personal communication (general watershed infor-
mation). NE Game & Parks Comm., Lincoln.
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
3101 BRANCHED OAK
3102 HARLAN COUNTY RESERVOIR
3103 HARRY D. STRUNK (MEDICIN
3104 HUGH BUTLER (RED WILLOW)
3105 JOHNSON RESERVOIR
3106 LAKE MCCONAUGHY
3107 PAWNEE LAKE
3108 SHERMAN COUNTY RESERVOIR
3110 SWANSON RESERVOIR
MEDIAN
TOTAL P
0.044
0.112
0.064
0.061
0.075
0.027
0.060
0.067
0.067
MEDIAN
INORG N
0.070
0.365
0.460
0.090
0.340
0.585
0.175
0.090
0.090
500-
MEAN SEC
456.444
476.111
470.500
468. d75
477.667
409.555
453.000
451.167
466. J33
MEAN
CHLORA
17.033
27.822
14.367
16.61?
26.133
8.644
15.367
6.717
14.450
15-
MIN DO
9.400
12.200
14.200
14.400
8.600
11.400
8.800
11.800
11.000
MEDIAN
DISS OrtlHO f
0.013
0.061
0.009
O.OU
O.OOsi
0.004
0.020
0.050
0.016
-------
PERCENT OF LAKES .KITH HIGHER VALUES (NUMBER OF LAKES XlTH HIGHEK VALUES)
LAKE
CODE LAKE NAME
3101 BRANCHED OAK
3103 HARLAN COUNTY RESERVOIK
3103 HARRY 0. STRUNK (MEDICIN
3104 HUGH BUTLER (RED WILLO*)
3105 JOHNSON RESERVOIR
3106 LAKE MCCONAUGHY
3107 PAWNEE LAKE
3108 SHERMAN COUNTY RESERVOIR
3110 SWANSON RESERVOIR
MEDIAN
TOTAL P
SB (
0 (
50 (
63 (
13 (
100 (
75 (
38 (
as (
7)
0)
4)
5)
1)
8)
6)
3)
2>
MEDIAN
INOKG
100 (
as <
13 (
75 (
38 (
0 (
50 (
75 (
75 (
N
8)
2)
1)
5)
3)
0)
4)
5)
5)
500-
MEAN SEC
63 (
13 (
as <
38 (
0 (
100 (
75 (
88 (
50 (
5)
1)
2)
3)
0)
8)
b)
7)
4)
MEAN
CHLORA
25 (
0 <
75 (
38 I
13 (
88 (
50 (
100 (
63 (
2)
0)
6)
3)
1)
7)
4)
8)
S)
15-
MIN DO
75 (
25 (
13 (
0 (
100 (
50 (
88 (
38 f
63 (
6)
2)
1)
0)
8>
4)
7)
3)
5)
MEuIAN
DISS OkTHO P
63 (
0 (
81 (
50 (
81 (
100 (
25 (
13 (
38 (
5)
0)
6)
4)
6)
8)
2)
1)
3)
1NJEX
NO
<*14
63
257
264
245
4J8
363
3*2
314
-------
LAKES RANKED BY INDEX NOS.
RANK LAKE CODE LAKE NAME INDEX NO
1 3106 LAKE MCCONAUGHY 438
2 3101 BRANCHED OAK 414
3 3107 PAWNEE LAKE 363
4 3108 SHERMAN COUNTY RESERVOIR 352
5 3110 SWANSON RESERVOIR 314
6 3104 HUGH SUTLER (RED WILLOW) 264
7 3103 HARRY D. STRUNK (MEDICIN 257
8 3105 JOHNSON RESERVOIR 245
-------
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 FLOW INFORMATION FOR NEBRASKA
LAKE CODE 3101 BRANCHED OAK LAKE
TOTAL DRAINAGE AREA OF LAKE(SO KM) 214.7
12/23/75
SUB-DRAINAGE
TRIBUTARY AREAfSQ KM)
JAN
FEB
MAR
APR
MAY
NORMALIZED FLOWS(CMS)
JUN JUL AUG
SEP
OCT
NOV
DEC
MEAN
3101A1
3101A2
3101B1
310 HZ
214.7
73.8
60.6
80.3
0.37 0.62 0.76 0.82
0.24 0.31 0.45 0.40
0.1* 0.25 0.37 0.34
0.25 0.34 0.48 0.42
0.71
0.48
0.40
0.54
0.51
0.26
0.22
0.28
0
0
0
0
.22
.13
.10
.13
0.08
0.07
0.06
0.08
0.08
0.13
0.10
0.14
0
0
0
0
.74
.34
.27
.34
0.34
0.20
0.16
0.21
0.31
0.16
0.13
0.17
0.46
0.26
0.22
0.28
SUMMARY
OTAL DRAINAGE AREA OF LAKE =
>UM OF SUB-DRAINAGE AREAS =
214.7
214.7
TOTAL FLOW
TOTAL FLOW
IN =
OUT «
9.15
5.56
MEAN MONTHLY FLOWS AND DAILY FLOWS(CMS)
TRIBUTARY MONTH YEAR
3101A1
MEAN FLOW DAY
3101A2
8
9
10
11
12
1
2
3
4
5
6
7
8
8
9
10
11
12
1
2
3
4
5
6
7
74
74
74
74
74
75
75
75
75
75
75
75
75
74
74
74
74
74
75
75
75
75
75
75
75
0.03
0.0
0.0
0.0
0.0
O.U
0.06
0.68
1.22
0.82
0.74
0.25
0.08
0.15
0.05
0.13
0.06
0.08
0.11
0.14
0.37
0.48
0.27
0.42
0.06
24
21
19
15
7
12
2
11
12
4
7
12
25
22
20
16
14
19
22
16
13
2
8
FLOW DAY
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.42
1.22
1.22
0.34
0.14
0.05
0.05
0.03
0.06
0.05
0.0
0.0
0.11
0.13
0.06 17
0.07 22
FLOW DAY
FLOW
0.05
0.06
-------
LAKE CODE 3101
TRIBUTARY FLOW INFORMATION FOR NEBRASKA
BRANCHED OAK LAKE
12/23/75
MEAN MONTHLY FLOWS AND DAILY FLOWS(CMS)
TRIBUTARY MONTH fEAR MEAN FLOW DAY
310161
3101ZZ
8
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
0.12
0.04
0.10
0.05
0.07
0.09
0.11
0.31
0.40
0.22
0.34
0.05
0.16
0.05
0.14
0.06
0.08
0.12
0.15
0.40
0.54
0.28
0.45
0.06
25
22
20
16
14
19
22
16
13
2
8
25
22
20
16
14
19
22
16
13
2
8
FLOW DAY
FLOW DAY
FLOW
0.04
0.08
0.05
0.06
0.05
0.0
0.0
0.07
0.08
0.07
0.05
0.06
0.08
0.05
0.07
0.06
0.0
0.0
0.11
0.12
0.08
0.07
17
22
17
22
0.05
0.07
0.06
0.08
-------
APPENDIX D
PHYSICAL and CHEMICAL DATA
-------
STORE! RETRIEVAL DATE 75/12/33
310101
40 58 14.0 096 51 16.0
BRANCHED OAK
31109 NEBRASKA
DATE
FROM
TO
74/04/17
74/07/02
74/09/26
TIME DEPTH
OF
DAY FEET
10 35
10 35
10 35
10 35
10 25
10 25
10 25
10 25
13 45
13 45
13 45
13 45
0000
0005
0015
0035
0000
0005
0015
0028
0000
0005
0015
0027
00010
WATER
TEMP
CENT
9.7
9.7
9.7
9.5
23.5
23.4
23.4
23.3
18.1
18.1
17.8
17.2
HEP ALES
00300
DO
MG/L
10.6
10.6
10.6
5.6
6.0
6.0
5.6
9.0
8.2
9.0
7.4
00077
TRANSP
SECCHI
INCHES
54
36
36
00094
CNDUCTVY
FIELD
MICROMHO
348
348
348
347
474
474
474
475
412
412
410
406
3
00400
PH
SU
7.90
8.00
7.90
7.80
7.85
7.84
7.80
7.66
00410
T ALK
CAC03
MG/L
220
220
222
218
278
284
276
266
2111202
0040
00610
NH3-N
TOTAL
MG/L
0.040
0.050
0.030
0.040
0.040
0.050
0.050
0.050
FEET DEPTH
00625
TOT KJEL
N
MG/L
0.600
0.700
0.800
0.800
1.100
1.000
0.900
0.800
00630
N02&N03
N-TOTAL
MG/L
0.060
0.060
0.020
0.060
0.020
0.020
0.620
0.020
00671
PHOS-DIS
ORTHO
MG/L P
0.004
0.009
0.013
0.009
0.028
0.030
0.025
0.023
00665
DATE TIME DEPTH PHOS-TOT
FROM OF
TO DAY FEET MG/L P
74/04/17
74/07/02
74/09/26
10
10
10
10
10
10
13
13
13
13
13
35
35
35
35
25
25
45
45
45
45
45
0000
0005
0015
0035
0000
0008
0000
0005
0007
0015
0027
0.
0,
0,
0.
0,
0,
0.
0,
,025
,044
,034
,030
.087
,096
.077
,059
32217 00031
CHLRPHYL INCDT LT
A REMNING
UG/L PERCENT
10.4
27.5
22.1
1.0
1.0
-------
STORET RETRIEVAL DATE 75/12/23
310102
40 SB 45.0 096 52 12.0
BRANCHED OAK
31109 NEBRASKA
DATE
FROM
TO
74/04/17
74/07/02
74/09/26
DATE
FROM
TO
74/04/17
74/07/02
74/09/26
TIME DEPTH
OF
DAY FEET
11 05 0000
11 05 0005
11 05 0015
11 05 0020
11 00 0000
11 00 0005
11 00 0015
11 00 0025
13 30 0000
13 30 0005
13 30 0015
TIME DEPTH
OF
DAY FEET
11 05 0000
11 05 0005
11 05 0015
11 05 0020
11 00 0000
11 00 0005
13 30 0000
13 30 0004
13 30 0005
13 30 0015
00010
WATER
TEMP
CENT
9.4
9.4
9.4
9.4
23.5
23.5
23.5
23.4
17.6
17.5
17.2
00665
PHOS-TOT
MG/L P
0.028
0.030
0.030
0.028
0.083
0.082
0.066
00300
DO
MG/L
10.6
10.6
10.6
6.0
6.0
6.0
6.0
8.6
9.2
8.6
32217
CHLRPHYL
A
UG/L
11.0
9.8
32.1
00077
TRANSP
SECCHI
INCHES
56
36
42
00031
INCDT LT
REMNING
PERCENT
1.0
1.0
00094
CNDUCTVY
FIELD
MICROMHO
343
345
345
346
472
470
470
475
406
405
403
11EPALES
3
00400 00410
PH T ALK
CAC03
SU Mli/L
222
220
222
226
7.90
7.90
7.80
7.80
7.79 278
7.78 260
7.76 260
2111202
0030
00610
NH3-N
TOTAL
MG/L
0.030
0.050
0.020
0.050
0.050
0.040
0.040
FEET DEPTH
00625
TOT KJEL
N
MG/L
0.700
0.800
0.900
0.800
1.200
1.000
0.900
00630
N02&N03
N-TOTAL
MG/L
0.030
0.060
0.020
0.060
0.030
0.020
0.020
00671
PHOS-DIS
ORTHO
MG/L P
0.009
0.008
0.011
0.012
0.030
0.027
0.025
-------
STORE! RETRIEVAL DATE 75/12/23
310103
40 57 25.0 096 52 19.0
BRANCHED OAK
31109 NEBRASKA
DATE
FROM
TO
74/04/17
74/07/02
74/09/26
TIME DEPTH
OF
DAY FEET
11 30 0000
11 30 0005
11 30 0012
11 20 0000
11 20 0005
11 20 0015
11 20 0020
14 15 0000
14 15 0005
14 15 0010
00010
WATER
TEMP
CENT
9.2
9.2
9.1
22.9
22.8
22.8
22.7
17.2
17.1
17.1
11EPALES
00300
00
MG/L
10.2
10.4
6.0
5.8
5.8
6.2
8.4
8.4
8.0
00077
TRANSP
SECCHI
INCHES
54
36
42
00094
CNDUCTVY
FIELD
MICROMHO
344
344
343
469
469
468
469
406
404
404
3
00400
PH
SU
7.80
7.80
7.80
7.80
7.73
7.73
7.74
00410
T ALK
CAC03
MG/L
226
226
224
290
242
272
2111202
0017
00610
NH3-N
TOTAL
MG/L
0.040
0.040
0.030
0.040
0.040
0.040
FEET DEPTH
00625
TOT KJEL
N
MG/L
0.900
0.800
0.800
0.800
0.700
0.700
00630
N02&N03
N-TOTAL
MG/L
0.050
0.040
0.030
0.020
0.020
0.020
00671
PHOS-OIS
ORTHO
MG/L P
0.005
0.005
0.009
Oc023
0.023
Oo023
00665 32217 00031
DATE TIME DEPTH PHOS-TOT CHLRPHYL INCDT LT
FROM OF A REMNING
TO DAY FEET MG/L P UG/L PERCENT
74/04/17 11 30 0000 0.038 12.9
11 30 0005 0.031
11 30 0012 0.028
74/07/02 11 20 0000 6.4
11 20 0006 1.0
74/09/26 14 15 0000 0.068 21.1
14 15 0005 0.079
14 15 0007 1.0
14 15 0010 0.067
-------
APPENDIX E
TRIBUTARY DATA
-------
STORET RETRIEVAL DATE 76/01/27
3101A1
40 57 59.0 096 50 30.0
OAK CREEK
31029 7.5 RAYMOND
0/BRANCHED OAK LAKE
SEC RO 8RDG .7 MI SE OF BR OAK LAKE DAM
HEPALES 2111204
4 0000 FEET DEPTH
DATE
FROM
TO
74/08/24
74/09/21
74/10/19
74/11/15
74/12/07
75/01/12
75/02/02
75/03/11
75/04/12
75/05/04
75/06/07
75/07/12
00630 00625
TIME DEPTH N02&N03 TOT KJEL
OF N-TOTAL N
DAY FEET
09
10
10
17
13
09
10
12
13
09
13
14
15
45
45
00
20
30
30
20
20
30
35
40
MG/L
0,
0,
0.
0,
0.
1,
1,
0,
0.
.820
.830
,736
.880
,830
.400
.720
.062
.070
0.030
0,
0.
,075
,105
MG/L
0.400
0.300
0.400
0.300
0.500
1.900
1.100
1.200
0.950
0.950
1.000
1.100
00610 00671 00665
NH3-N PHOS-DIS PHOS-TOT
TOTAL ORTHO
MG/L
0.050
0.040
0.050
0.065
0.085
0.144
0.212
0.058
0.075
0.035
0.105
0.100
MG/L P
0
0
0
0
0
0
0
0
0
.310
.280
.360
.330
.300
.320
.180
.031
.015
0.020
0
0
.055
.070
MG/L P
0.340
0.300
0.420
0.350
0.440
0.600
0.240
0.070
0.070
0.040
0.090
0.100
-------
STORET RETRIEVAL DATE 76/01/27
3101A2
41 00 33.0 096 54 40.0
OAK CREEK
31 7.5 VLPRAISO SW
T/BRANCHEO OAK LAKE
CO RD BRDG 8 MI ME OF GARLAND
11EPALES 2111204
4 0000 FEET DEPTH
DATE
FROM
TO
74/08/25
74/09/22
74/10/20
74/11/16
74/12/14
75/03/16
75/04/13
75/05/02
75/05/17
75/06/08
75/06/22
TIME DEPTH
OF
DAY FEET
10 00
10 20
10 00
15 15
10 05
15 00
14 30
14 40
09 47
14 30
14 00
00630
N02&N03
N-TOTAL
MG/L
1.010
1.080
0.240
1.060
0.990
0.935
0.490
0*310
0.670
0.440
0.610
00625
TOT KJEL
N
MG/L
0.500
1.100
0.500
0.500
0.400
2.000
0.900
1.350
0.350
1.250
2.400
00610
NH3-N
TOTAL
MG/L
0.075
0.165
0.035
0.085
0.045
0.169
0.220
0.095
0.200
0.165
0.120
00671
PHOS-DIS
ORTHO
MG/L P
0.200
0.175
0.055
0.040
0.090
0.175
0.125
0.130
0.190
0.210
0.345
00665
PHOS-TOT
MG/L P
0.230
0.195
0.140
0.110
0.140
0.230
0.180
0.190
0.348
0.350
0.750
-------
STORE! RETRIEVAL DATE 76/01/27
3101A3
41 05 23.0 096 57 24.0
OAK CREEK
31 7.5 VLPRAISO S*
T/BRANCHEO OAK LAKE
SEC RD BROG 3.5 MI ENE OF DMIGHT
11EPALES 2111204
4 0000 FEET DEPTH
DATE
FROM
TO
74/08/25
74/09/22
74/10/20
74/11/16
74/12/14
75/03/16
75/04/13
75/05/02
75/05/17
75/06/08
75/06/22
TIME DEPTH
OF
DAY FEET
09 20
09 45
09 30
14 35
09 35
14 30
14 05
14 10
09 30
14 05
13 37
00630
N02&N03
N-TOTAL
MG/L
0.840
1.920
0.736
1.060
1.240
0.764
0.540
0.370
1.100
0.750
0.510
00625
TOT KJEL
N
MG/L
0.300
0.900
0.400
1.700
1.000
2.700
1.150
1.150
0.650
1.250
1.730
00610
NH3-N
TOTAL
MG/L
0.015
0.120
0.027
0.055
0.065
0.089
0.165
0.315
0.185
0.065
0.220
00671
PHOS-DIS
ORTHO
MG/L P
0.160
0.230
0.180
0.080
0.115
0.184
0.105
0.115
0.080
0.145
0.220
00665
PHOS-TOT
MG/L P
0.164
0.240
0.210
0.160
0.150
0.210
0.140
0.160
0.260
0.370
-------
STORE! RETRIEVAL DATE 76/01/27
310181
40 58 48.0 096 55 45.0
MIDDLE OAK CREEK
31 7.5 GARLAND
T/BRANCHED OAK LAKE
CO RD BROG 5.2 MI NE OF GARLAND
11EPALES 2111204
4 0000 FEET DEPTH
DATE
FROM
TO
74/08/25
74/09/22
74/10/20
74/11/16
74/12/14
75/03/16
75/04/13
75/05/02
75/05/17
75/06/08
75/06/22
TIME DEPTH
OF
DAY FEET
10 15
10 40
10 10
15 30
10 15
15 15
14 45
14 50
10 00
14 40
14 14
00630
N02&N03
N-TOTAL
MG/L
1.720
1.920
0.672
1.440
1.360
0.957
0.525
0.480
0.810
0.430
0.760
00625
TOT KJEL
N
MG/L
0.600
0.900
0.600
0.700
0.700
1.900
1.050
1.500
0.650
0.930
2.200
00610
NH3-N
TOTAL
MG/L
0.045
0.045
0.030
0.075
0.125
0.273
0.330
0.395
0.105
0.085
0.150
00671
PHOS-DIS
ORTHO
MG/L P
0.115
0.155
0.125
0.105
0.095
0.184
0.085
0.123
0.160
0.160
0.270
00665
PHOS-TOT
MG/L P
0.160
0.230
0°140
OoUO
0.140
0*300
0.190
0.180
0.222
0.210
0.500
-------
STORE! RETRIEVAL DATE 76/01/27
3101C1
41 01 00.0 096 54 32.0
UNNAMED CREEK
31 7.5 VLPRAISO SW
T/3RANCHEO OAK
AT SEC RO BRDG 4.0 MI W OF AGNEM
11EPALES 2111204
4 0000 FEET DEPTH
DATE
FROM
TO
74/08/25
74/09/22
74/10/20
74/11/16
74/12/14
75/02/22
75/03/16
75/04/13
75/05/02
75/05/17
75/06/08
75/06/22
TIME DEPTH
OF
DAY FEET
09 50
10 10
09 55
15 00
10 00
14 15
14 45
14 25
14 30
09 40
14 20
13 54
00630
N02&N03
N-TOTAL
MG/L
0.570
0.416
0.248
0.504
3.000
3.050
3.135
0.710
0.760
0.500
0.300
0.380
00625
TOT KJEL
N
MG/L
1.300
1.500
1.200
1.500
1.000
2.400
2.950
2.600
1.800
0.275
1.500
1.750
00610
NH3-N
TOTAL
MG/L
0.120
0.115
0.055
0.345
0.200
0.464
0.524
0.075
0.490
0.165
0.145
0.220
00671
PHOS-DIS
ORTHO
MG/L P
0.150
0.100
0.125
0.140
0.025
0.040
0.267
0.040
0.110
0.105
0.115
0.130
00665
PHOS-TOT
MG/L P
0.290
0.260
0.320
0.230
0.160
0.260
0.385
0.220
0.190
0.205
0.200
0.260
-------
STORET RETRIEVAL DATE 76/01/27
31011C
40 54 03.0 096 48 21.0
WEST OAK CREEK
31109 7.5 RAYMOND
T/BRANCHEO OAK LAKE
SEC WO 8ROG 3.1 MI E OF MALCOLM
11EPALES 2111204
4 0000 FEET DEPTH
DATE TIME DEPTH
FROM OF
TO DAY FEET
74/08/24 09 45
74/09/21 11 15
74/10/19 10 15
74/11/15 16 30
74/12/07 13 45
75/01/12 10 25
75/02/02 09 45
75/03/16 12 00
75/04/12 14 00
75/05/04 10 40
75/06/07 13 10
75/07/12 13 35
00630
N02&N03
N-TOTAL
MG/L
3.200
2.900
2.080
1.840
1.550
4.000
0.850
1.445
0.735
0.840
1.250
2.200
00625
TOT KJEL
N
MG/L
1.000
0.600
0.700
0.600
0.600
1.100
0.500
1.600
1.000
1.700
0.700
1.050
00610
NH3-N
TOTAL
MG/L
0.050
0.035
0.045
0.080
0.040
0.096
0.124
0.196
0.065
0.060
0.020
0.165
00671
PHOS-DIS
ORTHO
MG/L P
0.400
0.315
0.290
0.260
0.230
0.368
0.264
0.231
0.180
0.190
0.310
0.350
00665
PHOS-TOT
MG/L P
0.480
0.375
0.360
0.340
0.320
0.600
0.440
0.370
0.290
0.270
0.340
0.440
------- |