U.S. ENVIRONMENTAL PROTECTION AGENCY
NATIONAL EUTROPHICATION SURVEY
WORKING PAPER SERIES
REPORT
ON
SWAN LAKE
ITASCA COUNTY
MINNESOTA
EPA REGION V
WORKING PAPER No, 129
PACIFIC NORTHWEST ENVIRONMENTAL RESEARCH LABORATORY
An Associate Laboratory of the
NATIONAL ENVIRONMENTAL RESEARCH CENTER - CORVALLIS, OREGON
and
NATIONAL ENVIRONMENTAL RESEARCH CENTER - LAS VEGAS, NEVADA
•ifOFO— 697-O3Z
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REPORT
ON
SWAN LAKE
ITASCA COUNTY
MINNESOTA
EPA REGION V
WORKING PAPER No, 129
WITH THE COOPERATION OF THE
MINNESOTA POLLUTION CONTROL AGENCY
AND THE
MINNESOTA NATIONAL GUARD
DECEMBER, 1974
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1
CONTENTS
Page
Foreword ii
List of Minnesota Study Lakes iv, v
Lake and Drainage Area Map vi
Sections
I. Conclusions 1
II. Lake and Drainage Basin Characteristics 3
III. Lake Water Quality Summary 4
IV. Nutrient Loadings 9
V. Literature Reviewed 14
VI. Appendices 15
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11
FOREWORD
The National Eutrophication Survey was initiated in 1972 in
response to an Administration commitment to investigate the nation-
wide threat of accelerated eutrophication to fresh water 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 [ 3O3(e)], water
quality criteria/standards review [ 5303(c)], clean lakes [ 5314(a,b)],
and water quality monitoring [ lO6 and 5305(b)] activities mandated
by the Federal Water Pollution Control Act Amendments of 1972.
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•111
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
fresh water 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.
ACKNOWL E DGMENT
The staff of the National Eutrophication Survey (Office of
Research & Development, U. S. Environmental Protection Agency)
expresses sincere appreciation to the Minnesota Pollution Control
Agency for professional involvement and to the Minnesota National
Guard for conducting the tributary sampling phase of the Survey.
Grant J. Merritt, Director of the Minnesota Pollution Control
Agency, John F. McGuire, Chief, and Joel G. Schilling, Biologist,
of the Section of Surface and Groundwater, Division of Water Quality,
provided invaluable lake documentation and counsel during the course
of the Survey; and the staff of the Section of Municipal Works, Divi-
sion of Water Quality, were most helpful in identifying point sources
and soliciting municipal participation in the Survey.
Major General Chester J. Moeglein, the Adjutant General of
Minnesota, and Project Officer Major Adrian Beltrand, who directed
the volunteer efforts of the Minnesota National Guardsmen, are also
gratefully acknowledged for their assistance to the Survey.
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iv
NATIONAL EUTROPHICATION SURVEY
STUDY LAKES
STATE OF MINNESOTA
LAKE NAME COUNTY
Albert Lea Freeborn
Andrusia Beltrami
Badger Polk
Bartlett Koochiching
Bear Freeborn
Bemidji Beltrami
Big Stearns
Big Stone Big Stone, MN; Roberts,
Grant, SD
Birch Cass
Blackduck Beltrami
Blackhoof Crow Wing
Budd Martin
Buffalo Wright
Calhoun Hennepin
Carlos Douglas
Carrigan Wright
Cass Beltrami, Cass
Clearwater Wright, Stearns
Cokato Wright
Cranberry Crow Wing
Darling Douglas
Elbow St. Louis
Embarass St. Louis
Fall Lake
Forest Washington
Green Kandiyohi
Gull Cass
Heron Jackson
Leech Cass
Le Homme Dieu Douglas
Lily Blue Earth
Little Grant
Lost St. Louis
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V
LAKE NAME COUNTY
Madison Blue Earth
Malmedal Pope
Mashkenode St. Louis
McQuade St. Louis
Minnetonka Hennepin
Mirmewaska Pope
Mud Itasca
Nest Kandiyohi
Pelican St. Louis
Pepin Goodhue, Wabasha, MN;
Pierce, Pepin, WI
Rabbit Crow Wing
Sakatah Le Sueur
Shagawa St. Louis
Silver McLeod
Six Mile St. Louis
Spring Washington, Dakota
St. Croix Washington, MN; St. Croix,
Pierce, WI
St. Louis Bay St. Louis, MN; Douglas, WI
Superior Bay St. Louis, MN; Douglas, WI
Swan Itasca
Trace Todd
Trout Itasca
Wagonga Kandlyohi
Wailmark Chisago
White Bear Washington
Winona Douglas
Wolf Beltrami, Hubbard
Woodcock Kandiyohi
Zumbro Olmstead, Wabasha
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VI
1 MIle
STP near
Nashwavk
p.02
AN
LAKE
07
J 7
)
Trib. Sampling
Site: #A1
SWAN LAKE
Tributary Sampling Site X Lake Sampling Site
La ...- Direct Drainage Area
Minnesota
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SWAN LAKE
STORET NO. 2788
I. CONCLUSIONS
A. Trophic Condition:
Survey data indicate that Swan Lake is mesotrophic. Of the
60 Minnesota lakes sampled in the fall of 1972, when essentially
all were well-mixed, two had less mean total phosphorus, three
had less mean dissolved phosphorus, and three had less mean inor-
ganic nitrogen. Of the 80 Minnesota lakes sampled, one had
greater Secchi disc transparency, and one had less mean chlorophyll
a. Depression of oxygen with depth occurred during the summer
sampling.
Survey limnologists did not observe any aquatic nuisances
during the three sampling visits.
B. Rate-Limiting Nutrient:
The results of the algal assay indicate nitrogen limitation
at the time the sample was collected.
The lake data indicate phosphorus limitation in July and nitro-
gen limitation in September and October.
C. Nutrient Controllability:
1. Point sources—-During the sampling year, Swan Lake received
a total phosphorus load at a rate in excess of the rate proposed by
Vollenweider (in press) as “dangerous”; i.e., a eutrophic rate (see
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2
page 13). It is calculated that three point sources--Nashwauk,
Keewaten, and Cooley--collectively contributed about 64% of the
load.
A reduction of 80% in the municipal point-source phosphorus
loads would reduce the loading rate to about 2 lbs/acre/yr or
0.23 g/m 2 /yr. This rate is an oligotrophic rate and, if achieved,
should result in a significant improvement in the trophic condi-
tion of Swan Lake.
2. Non-point sources (see page 13)--The phosphorus exports
of the Swan Lake tributaries were comparatively low during the
sampling year.
In all, it is estimated that non—point sources contributed
about 34% of the total phosphorus load to Swan Lake during the
sampling year.
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II. LAKE AND DRAINAGE BASIN CHARACTERISTICS
A. Lake Morphemetry :
1. Surface area: 2,615 acres.
2. Mean depth: 39.8 feet.
3. Maximum depth: 60 feet.
4. Volume: 104,077 acre/feet.
5. Mean hydraulic retention time: 2.4 years.
B. Tributary and Outlet:
(See Appendix A for flow data)
1. Tributaries -
Name Drainage area* Mean flow*
Hay Creek 25.1 mi? 13.9 cfs
O'Brien Creek 42.9 mi^ 23.5 cfs
Pickerel Creek 1.2 mi' 0.6 cfs
Oxhide Creek 7.7 mi2 3.5 cfs
Snowball Creek 6.6 mi? 3.3 cfs
Unnamed Creek (B-l) 12.5 mi' 7.0 cfs
Minor tributaries & 2
immediate drainage - 13.2 mi 8.6 cfs
Totals 109.2 mi2 60.4 cfs
Outlet -
Swan River 113.3 mi2** 60.4 cfs
C. Precipitation***:
1. Year of sampling: 22.6 inches.
2. Mean annual: 25.7 inches.
t McGuire, 1973; mean depth by random-dot method.
* Drainage areas are accurate within ±5%; mean daily flows are accurate
within ±10%; and ungaged flows are accurate within ±10 to 25% for
drainage areas greater than 10 mi2.
** Includes area of lake; adjusted to equal sum of subdrainage areas
*** See Working Paper No. 1, "Survey Methods".
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4
III. LAKE WATER QUALITY SUMMARY
Swan Lake was sampled three times during the open-water season of
1972 by means of a pontoon-equipped Huey helicopter. Each time, samples
for physical and chemical parameters were collected from at least two
stations on the lake and from a number of depths at each station (see
map, page vi); a total of eight stations were sampled during the September
period. During each visit, a single depth-integrated (15 feet or near
bottom to surface) sample was composited from the two stations (eight
stations in September) for phytoplankton identification and enumeration;
and during the last visit, a single five-gallon 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 45 feet at station 1, 54 feet at station 2,
49 feet at station 3, 10 feet at station 4, 12 feet at station 5, 34 feet
at station 6, 50 feet at station 7, and 25 feet at station 8.
The results obtained are presented in full in Appendix B, and the
data for the fall sampling period, when the lake essentially was well-
mixed, are summarized below. Note, however, the Secchi disc summary is
based on all values.
For differences in the various parameters at the other sampling
times, refer to Appendix B.
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5
A. Physical and chemical characteristics:
FALL VALUES
(10/22/ 72)
Parameter Minimum Mean Median Maximum
Temperature (Cent.) 6.9 7.0 7.0 7.2
Dissolved oxygen (mg/i) 10.0 10.2 10.2 10.2
Conductivity (pmhos) 180 191 190 200
pH (units) 8.0 8.1 8.1 8.1
Alkalinity (mg/i) 78 79 79 81
Total P (mg/i) 0.003 0.014 0.015 0.017
Dissolved P (mg/l) 0.002 0.009 0.009 0.013
NO + NO (mg/l) 0.040 0.041 0.040 0.050
Am onia mg/1) 0.040 0.043 0.040 0.050
ALL VALUES
Secchi disc (inches) 70 115 120 144
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6
B. Biological characteristics:
1. Phytoplankton -
Sampling Dominant Number
Date Genera per ml
07/12/72 1. Microcystis 1,103
2. Anabaena 452
3. Flagellates 253
4. Dinobryon 190
5. Cyclotella 90
Other genera 290
Total 2,378
09/09/72 1 . Microcystis 600
2. Dinobryon 398
3. Melosira 282
4. Flagellates 116
5. Cyclotella 51
Other genera 325
Total 1 ,772
10/22/72 1. Flagellates 1,533
2. Anabaena 1 ,382
3. Chroococcus 1 ,231
4. Fragilaria 427
5. Dinobryon 352
Other genera 2,110
Total 7,035
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7
2. Chlorophyll a -
(Because of instrumentation
the following values may be
01
02
01
02
03
04
05
06
07
08
01
02
problems during the 1972 sampling,
in error by plus or minus 20 percent.)
*
*
1.9
2.3
1.1
3.4
5.1
1 .8
2.8
4.8
7.3
7.6
1. Autoclaved, filtered, and nutrient spiked -
Ortho P
Conc. (mg/i )
Inorganic N
Conc. (mg/l )
Maximum yield
( mg/i-dry wt. )
N/P
Ratio
Sampling
Date
07/12/72
Station
Number
Chlorophyll a
(pg/i)
09/09/72
10/22/72
C. Limiting Nutrient Study:
Spike (mg/i )
Control
0.015
0.070
2.0
5/i
0.005P
0.020
0.070
2.4
4/i
0.010
P
0.025
0.070
1.9
3/1
0.020
P
0.035
0.070
2.1
2/i
0.050
P
0.065
0.070
2.3
1/1
0.050
P ÷ 10.0 N 0.065
10.070
29.2
155/i
* Samples lost.
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8
2. Discussion -
The control yield of the assay alga, Selenastrum capri-
cornutum , indicates that the potential primary productivity
of Swan Lake was moderate at the time the assay sample was
collected. The lack of increase in yield with increased ortho-
phosphorus, and the significant increase in yield when both
nitrogen and phosphorus were added, indicate nitrogen limi-
tation (note the N/P ratios). The customary 10.0 nig/l nitro-
gen spike was set up for this assay, but a lack of growth
response in the sample indicates the nitrogen spike was in-
advertently omitted.
The lake data indicate nitrogen limitation in September
(N/P ratio = 10/1) and October (N/P = 9/1) but phosphorus
limitation in July (N/P = 14/1).
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9
IV. NUTRIENT LOADINGS
(See Appendix C for data)
For the determination of nutrient loadings, the Minnesota National
Guard collected monthly near-surface grab samples from each of the tribu-
tary sites indicated on the map (page vi), except for the high runoff
months of April and May when two samples were collected. Sampling was
begun in October, 1972, and was completed in October, 1973.
Through an interagency agreement, stream flow estimates for the year
of sampling and a “normalized” or average year were provided by the Minne-
sota District Office of the U.S. Geological Survey for the tributary sites
nearest the lake.
In this report, nutrient loads for sampled tributaries were deter-
mined by using a modification of a U.S. Geological Survey computer
program for calculating stream loadings*. Nutrient loadings for unsam-
pled “minor tributaries and immediate drainage” (“ZZ” of U.S.G.S.) were
estimated by using the means of the nutrient loads, in lbs/mi 2 /year, at
stations B-i, C-i, and J-l and multiplying the means by the ZZ area in
mi 2 .
Note that Snowball Creek was sampled during the Survey; but this stream
joins the Swan River at or below the physical outlet of the lake, and the
nutrient loads do not affect the lake and are not shown in the loading
tables. However, since the “outlet” sampling station (A—l) was down-
stream from the confluence of Snowball Creek the nutrient loads attributed
* See Working Paper No. 1.
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10
to the Swan Lake outlet are those measured at station A-i minus the Snow-
ball Creek loads.
The calculated nutrient loadings at station D-1 on O’Brien Creek were
about equal to the measured loadings from the Nashwauk wastewater treatment
plant. Therefore, background loadings for O’Brien Creek were based on the
mean loadings obtained at stations C-i and B-i. All of the nutrients from
the Nashwauk wastewater treatment plant were assumed to have reached the
lake during the sampling year.
The operator of the Nashwauk wastewater treatment plant provided
monthly effluent samples and corresponding flow data. However, the
villages of Keewatin and Cooley did not participate in the Survey, and
nutrient loads were estimated at 2.5 lbs P and 7.5 lbs N/capita/year for
Keewatin and 3.5 lbs P and 9.4 lbs N/capita/year for Cooley.
The Village of Pengilly has no municipal system and was assumed to
be served by septic tanks.
A. Waste Sources:
1. Known municipalt -
Pop. Mean Receiving
Name Served Treatment Flow (mgd) Water
Nashwauk 1,341 act. sludge 0.252 O’Brien Creek
Keewatin 1,382 trickling 0.138* Welcome Creek
filter
Cooley 33 none 0.003* Pickerel Creek
2. Known industrial - None
t McGuire, 1973.
* Estimated at 100 gal/capita/day.
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11
B. Annual Total Phosphorus Loading - Average Year:
1. Inputs —
lbs P t % of
Source yr total
a. Tributaries (non—point load) —
Hay Creek 1,210 11.0
O’Brien Creek 1,310 11.9
Pickerel Creek 30 0.3
Oxhide Creek 120 1.2
Unnamed Creek (B-l) 240 2.2
b. Minor tributaries & immediate
drainage (non-point 1oad) - 400 3.6
c. Known municipal SIP’s —
Nashwauk 3,460 31.5
Keewatin 3,460 31.5
Cooley 120 1.2
d. Septic tanks* - 210 1.9
e. Known industrial - None — -
f. Direct precipitation** - 410 3.7
Total 10,970 100.0
2. Outputs —
Lake outlet - Swan River 2,320
3. Net annual P accumulation - 8,650 pounds
* Estimate based on 308 shoreline dwellings plus 1970 Pengilly population
of 80; see Working Paper No. 1.
** See Working Paper No. 1.
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12
C. Annual Total Nitrogen Loading - Average Year:
1. Inputs -
lbsN/ %of
Source yr total
a. Tributaries (non—point load) -
Hay Creek 40,550 22.8
O’Brien Creek 45,930 25.7
Pickerel Creek 1,430 0.8
Oxhide Creek 11,960 6.7
Unnamed Creek (B-i) 10,110 5.7
b. Minor tributaries & immediate
drainage (non-point load) - 14,130 7.8
c. Known municipal SIP’s -
Nashwauk 10,810 6.0
Keewatin 10,360 5.8
Cooley 310 0.2
d. Septic tanks* - 7,990 4.5
e. Known industrial - None - -
f. Direct precipitation** - 25,190 14.0
Total 178,770 100.0
2. Outputs -
Lake outlet - Swan River 74,010
3. Net annual N accumulation - 104,760 pounds
Estimate based on 308 shoreline dwellings plus 1970 Pengilly population
of 80; see Working Paper No. 1.
** See Working Paper No. 1.
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13
0. Mean Annual Non-point Nutrient Export by Subdrainge Area:
Tributary lbs P/mi 2 /yr lbs N/mi 2 /yr
Hay Creek 47 1 ,628
Pickerel Creek 25 1,192
Oxhide Creek 25 1,516
Snowball Creek 26 744
Unnamed Creek (B-i) 18 794
E. Yearly Loading Rates:
In the following table, the existing phosphorus loading
rates are compared to those proposed by Volienweider (in press).
Essentially, his “dangerous” rate is the rate at which the
receiving water would become eutrophic or remain eutrophic; his
“permissible” rate is that which would result in the receiving
water remaining oligotrophic or becoming oligtrophic if mor-
phometry permitted. A mesotrophic rate would be considered one
between “dangerous” and “perfihi ssi bl e”.
Total Phosphorus Total Nitrogen
Units Total Accumulated Total Accumulated
lbs/acre/yr 4.2 3.3 68.4 40.1
grams/mt/yr 0.47 0.37 7.7 4.5
Vollenweider loading rates for phosphorus
(g/m 2 /yr) based on mean depth and mean
hydraulic retention time of Swan Lake:
“Dangerous” (eutrophic rate) 0.44
“Permissible” (oligotrophic rate) 0.22
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14
V. LITERATURE REVIEWED
Anonymous, 1974. Wastewater disposal facilities inventory. MPCA,
Minneapolis.
McGuire, John F., 1973. Personal communication (point sources;
physical and biological characteristics of Swan Lake). MPCA,
Minneapolis.
Miller, Richard D., 1962. Report on investigation of pollution of
Swan Lake, Itasca County. Dept. of Health, Minneapolis.
Schilling, Joel, 1974. Personal communication (lake map). MPCA,
Minneapolis.
Vollenweider, Richard A., (in press). Input-output models. Schweiz
A. Hydrol.
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15
VII. APPENDICES
APPENDIX A
TRIBUTARY FLOW DATA
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T 1r31JTA Y FLO* 1NF0 MAT1ON FOR WIMNESOTA 10/30/74
LA’(F CO )E ?7 SWAN LA <
TOTAL fl AJNAGF A9EA OF LAKE 114.00
StIM-DRAINAG I- “IORrIALIZED FLOWS
TPIP IJTA Y ñRFA JAfJ FEP4 MAR A ’R MAY JUN JUL AUG SEP OCT NOV DEC MEAN
27F 1RAI 114.00 p3.70 ?0.64 2 .22 220.6R 137.33 94.62 38.36 22.16 19.03 52.57 36.94 30.97 60.36
17. 50 P . 5 2•30 3.37 2 .90 16.20 11.20 4.65 2.55 2.65 6.41 4.05 4.17 6.95
27MRCI 2 5.10 5.4) 4•44 6.64 47.70 37.40 2.30 9.24 5.09 4.99 12.50 8.23 7.70 13.87
?7RRDI 4?.QO 9.lO 8.00 10.90 86.10 53.90 36.60 14.90 8.60 7.40 20.50 14.40 12.00 23.52
?7SRC,1 1.21 0.19 0.1? 0.37 2.00 1.41 1.13 0.41 0.17 0.24 0.44 0.24 0.29 0.58
278891 7.74 0.63 0.46 1.45 13.80 R.84 b.97 2.49 1.06 1.29 2.60 1.59 1.21 3.53
?78 8JI 6.57 0. 7 0.74 1.39 11.70 .23 5.92 2.34 1.19 1.35 3.00 1.83 1.65 3.36
?78877 17.30 1.71 2.47 —.r32 31.00 19.50 15.00 5.72 2.81 3.07 7.02 4.43 4.45 8.56
SUMMARY
TOIAL 1, -tA1NAOF Ar EA OF LANE = 114.00 TOTAL FLOW IN = 724.65
SU ’ .l OF 5 119—DRAINAGE AREAS = 113.34 TOTAL FLOW OUT = 724.72
ME4N MOI THLY c i)yj ANtI )AILY FLOWS
T Tl-tIJTA9Y M ONT ’-l YEA ’ EAN FLOW DAY FLOW DAY FLOW DAY FLOW
27P8A ( 10 7? 25.40 14 19.00
I I 7? 41.30 19 39.00
1? 77 40.70
11 48. 30 9 48.00
2 71 6’ .’ —O 1% ‘ .3.00
1 73 6?.90 17 93.00
4 71 79.4’) 72.00 19 62.00
5 73 J ’I. fl ‘ 3.Of, 20 (09.00
6 7. 7Q• ,rj 34 69.00
7 7 . - ‘. 2’-’ 31.u O
9 71 ?.1- 2’) ,4.0O
9 13
278841 (0 7’ ‘.- 14 2.20
I I 7’ 4•77 1’ - 4.OJ
17 72
1 7’ S. ’ 1 ‘ 5. 0
7 7 3 4. ’7 19 4•50
3 71 7.11 17 10.00
1. 73 6. .47 c 1.00 19 6.00
5 73 I ..O S .00 ‘0 12.00
6 7 ‘. ‘ 6 14 7. O
7 13 4.14 26 4.79
4 7 5.68 2’)
9 73 3 . 1
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1Ql.-4IITA- Y FIG ’ . 1NFO ’AT1ON lOW M INN ESOt A 10/30/74
LA
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TQI-4’JT Y FL1) : P’JFO MATTON FU M JNES0TA
10/30/74
LA
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APPENDIX B
PHYSICAL and CHEMICAL DATA
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STORET RETRIEVAL DATE 74/10/30
278801
47 19 29.0 093 11 12.0
SWAN LME
27 MINNESOTA
UEPALES 2111202
3 0037 F(ET DEPTH
00010 00300 00077 00094 00400 00410 00630 00610 00665 0066
DATE TIME DEPTH WATER 00 TRANSP CNDUCTVY PH 1 ALK N02&N03 NH3—N P1405—TOT PHOS—OlS
FROM OF TEMP SECCI4I FIELD CACO3 N—TOTAL TOTAL
TO DAY FEET CENT HC,/L INCHES HICPOMHO SU HG/L HG/L 14G/L MG/L P MG/L P
7 2/07/1 ? 20 15 0000 120
20 15 0004 ‘1.3 8.0 170 7.70 79 0.040 0.050 0.016 0.007
?O 15 0015 17.3 2.4 170 6.80 74 0.180 0.050 0.022 S.009
20 15 0030 10.0 ‘.6 170 6.40 75 0.180 0.050 0.014 0.010
- 20 15 0044 6.’. 170 6.30 78 0.300 0.080 0.047 0.031
7?/09/09 08 20 0000 132 198 7 .?Oh 83 0.040 0.040 0.010 0.008
08 ?O 0004 17.1 7.6 195 7.70 82 0.040 0.030 0.011 0.008
08 20 0015 17.’ 7.7 195 7.75 82 0.030 0.030 0.011 0.008
08 20 0024 17.2 7.8 193 7.70 82 0.040 0.030 0.011 0.008
OR 20 0033 14.9 3.2 193 7.10 80 0.080 0.050 0.011 0.008
72/10/22 16 00 0000 87 200 8.10 81 0.040 0.040 0.017 0.010
16 00 0004 7.’ 10.2 190 8.10 79 0.040 0.040 0.017 0.011
16 00 0015 7.2 10.2 190 8.00 78 0.040 0.040 0.015 0.003
16 00 0025 7.2 10.0 190 8.00 79 0.050 0.050 0.003 0.002
16 00 0045 7.2 10.1 190 8.00 78 0.040 0.050 0.013 0.009
3?’I 7
DATE TIME r) PT-1 CHL PHYL
FROM OF A
TO DAY FEET JG/L
77/OQ/09 08 20 0000 1.9J
7?/IO/2? 16 00 0000 7.1j
J VALUE (NOWN TO U’
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STORET RETRIEVAL DATE 74/10/30
DATE
FROM
TO
32217
rI-IL PHYL
A
‘I
2. 3J
7 • hJ
278802
47 18 45.0 093 10 55.0
SWAN LAKE
27 MINNESOTA
1 1EPALES
3
2111202
0058 FEET DEPTH
00010
00333
00077
00094
00400
00410
00630
00610
00665
00666
DATE
TIME
DEPTH
IATER
00
TRANSP
CNDUCTVY
PH
T
ALK
N02&N03
NH3—N
PHOS—TOT
PHOS—DIS
EPOM
OF
TEMP
SECCHI
FIELD
CACO3
N—TOTAL
TOTAL
TO
DAY
FEET
CENT
HG/L
INCHES
MICRONHO
SU
MG/L
MG/I
MG/L
MG/L P
MG/I P
72/07/I?
20 40
0000
120
20 40
0004
21.5
7.6
160
7.70
70
0.050
20 40
0015
21.3
6.0
170
7.70
70
0.010K
20 40
0041
6.6
0.4
175
6.40
75
0.300
72/09/09
OR 55
0000
144
197
7.80
83
0.040
08 55
0004
17.5
199
7.78
83
0.030
08 55
0015
17.5
193
7.80
84
0.030
08 55
0022
17.5
‘.R
190
7.80
83
0.030
08 c5
0029
16.7
6.?
190
7.50
81
0.040
OR cc
0035
12.9
1.1
190
6.95
78
0.120
OR cs
0041
9.4
0.5
190
6.90
77
0.170
OR 55
0048
7.’
0.4
200
6.95
86
0.160
OR 55
0054
7.2
0.4
200
7.00
85
0.150
72/10/??
15 30
0000
70
200
8.10
79
0.040
15 10
0004
11.2
190
8.10
78
0.040
15 10
0015
10.2
190
8.10
79
0.040
ic 10
0020
lu.2
180
8.10
79
0.040
15 10
0015
Ifl.2
190
8.10
79
0.040
TIME
DE°T-l
OF
DAY
FEET
7?/09/0
08 55
OOflO
72/10/2?
15 JO
0000
0.030
0.012
0.011
0.010K
0.014
0.009
0.050
0.034
0.023
0.040
0.012
0.009
0.030
0.014
0.008
0.030
0.040
0.012
0.011
0%008
0.009
0.050
0.010
0.006
0.070
0.012
0.009
0.100
0.023
0.018
0.210
0.052
0.043
0.240
0.075
0.064
0.040
0.012
0.009
0.040
0.015
0.009
0.040
0.015
0.012
0.040
0.016
0.012
0.050
0.016
0.013
K VALUF KNOWN TO BE LESS
THAN INDICATED
J VALUE I
-------
STORET V
-------
STORET PETRftVaL DATE 7’./10/J0
278804
47 17 22.0 093 12 18.0
SWAN LAKE
27 MINNESOTA
LIEPALES 2111202
3 0014 FEET DEPTH
00010 00300 00077 00094 00400 00410 00630 00610 00665 00666
DATE TIME r)R°T -1 WATFP DO TRANSP CNDUCTVY PH 1 ALK NO2 NO3 NH3—N P1105—TOT PHOS—DIS
F•ROM oF TF .iP SECCHI FIELD CACO3 NTOTAL TOTAL
TO PaY FEET CF ’IT MG/L INCHES MICPOMt-IO SU MG/L P4G/L MG/L MG/L P MG/L P
7?/09/OQ 11 ?0 0000 9 195 7.80 82 0.030 0.040 0.017 0.010
11 20 fl004 17.€ P.S 188 7.90 80 0.030 0.050 0.021 0.008
11 20 0 l0 17.3 9.4 188 7.85 78 0.020 0.050 0.023 0.009
32217
DATE TIMF DEPTH Cr1LF HYL
POM OF A
TO OAY FEET Jr /L
7?/09/09 11 ?0 0030
J V\LIJE K UaI TO c: i
-------
STOPET RETRIEVAL DATE 7’./10/30
278805
47 17 06.0 093 11 33.0
SWAt ’ LAKE
27 MINNESOTA
L1EPALES 2111202
3 0016 FEET DEPTH
00010 00300 00077 00094 00400 00410 00630 00610 00665 00666
DATE TIME Df TH WATER 00 TRANISP CNDIJCTVY PH T ALK N02&N03 NH3—N PHOS—TOT PI OS—DIS
FROM OF TEMP SECCNI FIELD CACO3 N—TOTAL TOTAL
TO DAY FEET CENT lG/L INCHES MICROMMO SIJ MG/L MG/I MG/I MG/I P MG/I P
7?/09/09 11 35 0000 10 193 7.83 82 0.020 0.030 0.013 0.008
11 35 0004 17.? 10.8 190 7.80 80 0.030 0.030 0.018 0.009
II 35 0017 17.7 P.2 185 7.80 80 0.030 0.040 0.016 0.009
17?1 7
DATE TIME OE°TH C- LR MYL
OM OF A
TO DAY FEET t) /L
7?/oq/Oq 11 35 0000
J V LUF K’J0, 1 ’L TI’ E I
-------
STORET RETRIEVAL DATE 74/10/30
Tj’ iE DEPT-I
OF
DAY FEET
3??l 1
Ct-$L °HYL
A
UG/L
2 7 06
47 17 30.0 093 11 30.0
SWAN LAKE
27 MINNESOTA
11 EPALES
3
2111202
0038 FEET DEPTH
00010
00300
00077
00094
00400
00410
00630
00610
00665
00666
DATE
TIME
DEPTH
WATER
DO
TRANSP
CNOUCTVY
PH
T ALK
N0?&N03
NH3—N
PHOS—TOT
PHOS—DIS
FROM
OF
TEMP
SECCHI
FIELD
CACO3
N—TOTAL
TOTAL
TO
DAY
FEET
CENT
MG/L
INCHES
MICROMHO
SU
MG/L
MG/L
MG/L
MG/L P
MG/L P
7?/09/09
11 50 0000
132
198
7. 5
79
0.030
0.040
0.012
0.008
11 50 0004
17.5
7.7
190
7.80
79
0.030
0.020
0.013
0.009
11 50 0015
17.4
7.7
198
7.70
79
0.040
0.040
0.012
0.008
Ii 50 0022
17.0
.5
190
7.55
79
0.060
0.040
0.012
0.007
11 50 0027
16.7
fl.5
190
6.95
77
0.160
0.090
0.020
0.014
11 50 0034
10.5
0.1
193
6.95
fl
0.140
0.110
0.029
0.016
DATE
FROM
TO
7?/Oq/Oq II 50 0000
I •
j V Lu: V -
-------
STORET RETRIEVAL DATE 74/10/30
278807
47 17 45.0 093 10 00.0
LAKE
SWAN
?7
1 1EPALES
3
MINNESOTA
2111202
0054 FEET DEPTH
DATE
FROM
TO
TIME 1)EPTH
OF
DAY FEET
3 ?l7
CHLRPHYL
A
UG/L
00010
1)0300
00077
00094
004U0
00410
00630
00610
00665
00666
DATE
TIME
DEPTH
WATER
DO
TRANSP
CNDLJCTVY
T ALK
NO2&N03
NH3—N
PHOS—TOT
PHOS—DIS
FROM
OF
TEMP
SECCHI
FIELD
CACO3
N—TOTAL
TOTAL
TO
DAY
FEET
CENT
MG/L
INCHES
MICROMMO
SU
MG/L
MG/L
MG/L
MG/L P
MG/L P
7?/09/09
12 20 0000
120
198
7.82
83
0.030
0.050
0.012
0.006
12 20 0004
17.8
8.’.
198
7.B
80
0.020
0.050
0.015
0.006
12 20 0015
17.7
8.?
190
7.80
82
0.020
0.040
0.012
0.007
12 20 002?
17.6
7.9
195
7.75
83
0.030
0.050
0.011
0.007
12 20 0030
12.7
0.7
190
6.95
76
0.140
0.070
0.016
0.011
12 20 0036
9.8
0.4
197
6.95
81
0.200
0.120
0.035
0.025
12 20 0043
7.9
0.4
197
6.93
82
0.140
0.240
0.066
0.047
I? 20 0050
7.3
0.2
200
6.95
2
0.140
0.240
0.066
0.047
7?/09/09 17 20 0000
J V L’)F K O. I
-------
STORET RETRIEVAL DATE 74/10/30
278808
47 17 10.0 093 09 35.0
SWAN LAKE
27 MINNESOTA
2111202
0029 FEET DEPTH
DATE
FROM
TO
TIME DF°TH
O-
DAY FFET
3’?17
CHLPPHYL
A
U(,/L
1 IEPALES
3
00010
00300
00077
00094
00400
00410
00630
00610
00665
00666
DATE
TIME
DEPT9
W4T P
DO
TRANSP
CNDUCTVY
PH
1 ALK
N02&N03
NH3—N
P 1105—TOT
PHOS—DIS
FROM
OF
TEMP
SECCHI
FIELD
CACO3
N—TOTAL
TOTAL
TO
DAY
FEET
CENT
MG/L
INCHES
MICROMHO
SU
MG/L
MG/L
MG/L
HG/L P
MO/L P
7?/09/09
10 10 0000
198
7.83
78
0.030
0.060
0.010
0.006
10 10 0004
17.8
R.6
195
7.85
77
0.030
0.050
0.013
0.008
10 10 0015
17.7
8.3
188
7.82
81
0.030
0.060
0.013
0.006
10 10 0020
17.5
7.6
190
7.68
79
0.040
0.060
0.010
0.005
10 10 0025
17.!
9.9
188
7.60
76
0.040
0.060
0.010
0.005
7?/OQ/09 tO 10 0000
4. Mi
J VALUE KNOwN TO u ,
-------
APPENDIX C
TRIBUTARY and WASTEWATER
TREATMENT PLANT DATA
-------
STOPFT PETRIEVAL DATE 74/10/30
27 Al LS27MRAI
47 17 00.0 093 16 00.0
SWAN RIVER
7.5 CALUMET
O/S .AN LAKE
R i) NPDG 2.5 MI S OF CALUMET
1IEPALES 2111204
4 0000 FEET DEPTH
00 1’) 00675 00610 00671 00665
DATE T I’1F DE°T-I O NO3 TOT KJFL NH3—N PHOS—DIS PHOS—TOT
F )M N—TOTAL TOTAL OPT-lO
TO O FE T MG/L 1G/L Mr,/L MG/L P MG/L P
72/10/14 09 -‘0 ).0 6 0.4 0 0.056 0.00 5K 0.022
7?/H/19 14 ?0 G.5?3 Ci.O4f i 0.009 0.016
73/01/17 13 .t) ‘ .I 0 0.’.?0 0. 0 ’2 0.014 0.020
73/04/05 (j(.) 05 O.01 1. 60 u.014 0.005K 0.025
73/0 /19 fl9 55 C i.0 4 0.650 0.056 0.007 0.030
73/05/05 10 30 0 . OIOK L.0 4 2 0.005K 0.015
73/05/20 11 15 .O13 0.4 ’O o. Oosfrc 0.00 0.035
71/06/1410 15 (.01JK 1. 00 0.015 0.025
71/07/26 l 45 (‘.01 0. +0 0.025 0.01? 0.025
73/0F4/20 13 5 .01’ -, C.4 0 0.019 0.011 0.C1?0
71/10/031470 0.O10’( 1. 0 “.097 0.009 0.020
K V LU KNOWN TO RE LESS
THAN INDICATED
-------
STOPET RFTP!EVAL AT 74/10/30
‘788t l LS278RE31
41 16 30.0 091 09 30.0
UNNAMEn OUTLET OF -fA T LAKE
27 7.5 PENGILLEY
T/SWAN LAKE
CO HWY 12 Bó DC, UPSTR€:AM OF SWAN LAKE
11FP LES 2111204
4 0000 FEET OEPTH
iO ’10 00671 0CM 5
r)e TE I p f r;F T’- Jt 7 .NO3 TOT c JFL NH3— I Pr-f()S— )IS PHOS—TOT
FP 3M OF N—TOTA l N p TOTAL OPT -sO
TO ) Y FEEr MG/I /L MG/L -1c,/L P MG/L
72/10/1411 iS .03’ 0.450 O.(, 5 0.006K 0.014
77/11/1 11 10 O.01 s O.’.40 0.O 4 0.006 0.01
71/01/17 ii 00 ,.154 .‘ l) 0 l,.04P 0.O Of’ i ,.015
73/0 /05 11 05 ‘ .fl’? .).010 0.005K 0.025K
71/04/1 1’ 15 0.037 1.f- O) 0.046 0.006 0.035
71/OS/OS 17 45 (.015 O. ?0 0.021 0.005K 0,020
73/95/?O 1? 00 0.0)4 0.420 0.005K 0.00 5K 0.020
71/O /1 11 30 (.010K 0.7’O 3.011 0.O OB 0.01
71/07/2 2026 ( ‘.010 ’ s O. -?0 ).01 5 O.00 0.015
71/OM/?O 1 15 ‘.013K 1 . - (j u. ,?7 0.OO l ( ,.O10
71/10/O 1- 15 3.01) ’c 0,’-30 0.034 0.007 0.010
K VALUE KNOwN TO E LESS
T’-4AN INDrcATED
-------
STO FT PET cvAL DATF 74/10/30
27 3RC1 LS278E C1
47 17 30.0 093 09 00.0
i-lAY CREEK
27 7.5 PENGILLY
T/SwA”J LAKE
Co HWY 12 HRDG .25 Ml UPSTREAM SWAN LAKE
1 IEPALES 2111204
4 0000 FEET DEPTH
00f 25 00F 10 00671 006f ’5
OATF TIr F OFPT’-l ‘ O Nt)3 TOT KJ L N’-13—N PHOS—DIS PHOc—TOT
FROM 0F N—T( ’T. L i TOTAL OPTHO
TO I)AY FF T kI(./I MG/L MG/L UG/L P MG/L P
7?/10/14 11 10 J.03 0.’ 5Q 0.063 0.013 0.040
7?/I /19 )4 Ofl O.03 4 ( l.r40 0.071 0.010 0.034
71 /04/O’- 10 S5 ).07f ?. lOfl jeOô O 0.014 0.060
71/04/1 1? 10 c.oi ?. 00 0.073 0.0?? 0.080
71/05/0 1’ 10 (.015 1.050 0.O?0 0.0DM 0.040
73/Q5/2Ø i (;.0)- ’ 1.150 0.023 0.00 0.040
73/0f- /14 II 15 v.0’’ 1. JJ t’.034 i) .0) 0.040
71/07/?b 7 Ø 27 0.010K 0.c 0 0.020 O. O1R 0.040
7 /QJ /?n 1 . 1-, 0.01 .70, .‘77 0.02? 0.04U
73/10/01 ic 0 0.0I ( 1.’ 9(. 0.C5’ - 0.0?3 0.040
K Vi LU l NOW’J TO bE LESS
THAN INDICATED
-------
ST()T PFTPIEVAI DATE 74/10/30
27d 13 01 LS278801
47 18 30.0 093 10 00.0
O’ PIEN CNEEK
27 7.5 PENGILLY
I/SWAN LAKE
Co riwY 12 3i DG 2 MI SE PENGILLY
I1EPALES 2111204
4 0000 FEET DEPT -1
üO6ii 00665
l) TE TI ME FWP T’-i ‘JO ‘ NO T r r JFL Nri —N P OS ) 5 PHOS—TO I
FPOM OF 1—TOTAL TOTAL OPT-il)
TO DAY rEET M ,/L l(/L c,/L 1 ,/L P MG/L
7?/ 10/J40q 0 () !. ‘ ( 10 ( . 1 5) 0.100 0.060 0.130
7?/H/1 10 5 J.117 0. o’s? 0.024 0.063
73/03/17 1(1 45 1. O 0.157 0.080 0.170
73/04/05 10 (10 ).‘- ‘.u 9.046 0.023 0.075
71/04/IQ 1? ?O (i.011 1. 9 ) 0.042 0.016 0.07?
73/05105 1 40 0.01)rc 0.7’O O.02S 0.0)9 0.060
71/05/70 11 0 ‘.01IJK (1.660 ).OOSK 0.021 0.055
71/06/IL. 11 35 “,. O lI ).Ico O.O3c 0.04 0.075
71/07/267(1 15 0.066 1. 3u fl.t)f 3 0.046 0.0 0
73/05/20 14 () ‘. Ofl 7. -0( .0h 0.046 0.070
71/10/01 14 7 (‘. Oh’K o.c 6o .03’ l 0.026 0.050
K V’ LUE rSNOWN TO E LESS
THAN [ “DICATED
-------
STOPET RETPIEVAL DATF 74/10/30
?flRE I LS2788E1
47 23 30.0 093 04 00.0
WELCOME CREEK
27 7.5 KEEWATIN
1/SWAN LAKE
Co HWY 16 XING SE KEEWATIN ABOVE STP
11EPALES 2111204
4 0000 FEET DEPTH
0063) 006?S (10610 (10671 0066 5
DATE TIME DE TH NO’ .NQ3 TOT KJEL NH3—N PHOS—DIS PHOS—TOT
OF N—TOTAL N TOTAL ORTHO
TO r y FEFT HG/L lG/L MG/L MG/L P MG/L P
72/10/14 11 45 0. 90 0.’ SO 0.066 0.005K 0.017
72/11/19 09 55 0.1 S 0.460 0.110 0.005K 0.01
73/04/05 (1 30 3.1’O 1.400 0.067 0.005K 0.025
73/04/19 10 25 0.115 1.71) 0.100 0.005K 0.020
71/05/05 10 cc 0.30 0 0.440 0.040 0.005K 0.015
73/05/20 11 1 0.600 0.790 0.014 o.oocK 0.020
71/06/14 ii 40 0.07? 1.30u O. 1f 9 0.052 0.100
71/07/26 70 1 u.O - 0.5’O 0.07P 0.013 0.07
73/09/2o 15 36 0. O SJ 0.50 l U.0 P 0.023 0.120
73/10/01 15 35 0.70(1 ?.O OIh 0.0?? 0.006 0.025
K VALUE KNOWN TO 3E LESS
THAN INDICATED
-------
STOf ET FT9IEVAL DATE 74/1( /30
?7 E2 LS2788E2
47 22 30.0 093 04 30.0
WELCOMF CP EEK
27 7.5 SILICA
T/S ’iAN LAKE
AT CULVERT 0.75 M I
11 EPALES
4
N Co RDS16 & 531
2111204
0000 FEET DEPTH
1C 630
0062 5
00610
00671
00665
)ATF
TIu
OFPTH
NO’&I\}03
TflI KJEL
NH3—’ ’
PHOS—DIS
PHOS—TOT
FI 0M
flF
\J—TOTAL
j
TOTAL
Q THO
TO
DAY
FFFT
Mr,/L
‘1(i/L
rlG/L
M&/L P
MG/L P
7?/10/14
17
SO
J.740
3.?S0
0.105
0.03
0.097
7?/11/1
10
00
0.SL)0
1.150
0.580
0.014
0.205
71/01/17
10
10
0. )
1.R90
0.730
0.050
0.260
71/04/05
09
35
3.410
7. 5 0
O.R30
0.054
0.335
71/04/19
10
30
0.3 0
3.400
0.615
0.027
0.180
73/05/05
11
05
0.450
1.400
0.600
0.036
0.260
73/D5/?0
13
30
0.760
O. O0
0.?5?
0.066
0.280
73/06/14
11
50
3.7 40
l. 1 0
0.410
0.071
0.250
73/07/2’
?0
56
0.360
1.100
O.?94
0.062
0.230
73/OR!?.)
if,
42
0.690
1.i0f)
0.505
0.04?
0.102
71/10/01
iS
40
0.910
1. OSC
0.?40
0.060
0.130
-------
STOPET RETRIEVAL DATE 74/10/30
?7 38G1 LS2788G1
47 20 00.0 093 11 30.0
PICKEREL CREEK
27 7.5 PENGILLY
T/SW N LAKE
CO HWY 12 CROSSING NE OF PENGILLY
11EPALES 2111204
4 0000 FEET DEPTH
00’ 30 00625 00610 00671 00665
DATE TT 1E flh Tr1 NO NO1 TOT $ JEL N i3N PHOSDIS PHOS—TOT
FROM 0F N—TOTAL N TOTAL ORTHO
TO (L Y FEET MG/L M(’/L MG/L MG/L P MG/L
7?/I0/14 10 50 0.377 .?O0 0.064 0.007 0.020
7?/11/ IQ 10 ‘+S 0.15’) 0.400 0.04P 0.00 0.019
71/03/17 tO 40 1.200 O.4 O 0.052 0.013 0.047
73/04/05 10 40 0.410 1.c4u 0.036 0.006 0.025
71/04/19 1 10 ‘).740 3.000 0.132 0.010 0.035
73/05/05 1 20 0.370 0.03? 0.009 0.025
73/0S/?0 11 45 0.09 i 0.”60 0.016 0.011 0.030
71/06/14 10 55 0. 0 1.056 0.021 0.035
71/07/26 0 0 O.O 0 0.440 0.035 0.013 0.030
73/0 /?0 1 50 0.14) 1.470 0.140 0.017 0.025
71/10/03 14 50 u.?40 1.150 0.027 0.011 0.030
-------
ST’)PET PET T VAL 1)ATE 7L./10/30
27MMr-11 LS278RH1
47 19 30.0 0Q3 12 00.0
OXHIDE CP EEK
21 7.5 PENGILLY
T/SWAN LAKE
AT ST HWY 65 XING S OF PENGILLY
1.ftPALES 2111204
4 0000 FEET DEPTH
00 ?5 006)0 00671 00665
1)ATE TT i r) TH ‘JO’ ”O3 TOT KJEL N -13-N PriOS—fliS ?HOS—TOT
FPOM o \J—TOTAL r j TOTAL ORTHO
TO )AY FFFT 1c,/L MG/L Mr /L ° lG/L P
7?/l0/14 13 45 :‘.P3s O.40 3.160 0.005K 0.015
7?/II/ IQ fl 0.9 1 0.- *1O i.1lS 0.005K 0.011
71/01 1)7 11 10 1.?LeJ 0.100 1.06? o.noq 0.030
73/04/06 10 35 1.’7 I . 4 J 0.035 0.005K 0.005K
71/04/1 12 ‘.5 1.16) 3.730 0.210 11.006 0.025
71/05/OS 13 00 1.0?fl c.c o 0.044 0.006 0.015
71/05/20 11 40 0.900 0.L 4 10 0.015 0.007 0.0?5
71/36/1 . 10 0 j.770 C . 540 0.044 0.009 0.015
71/07/?E ?0 CS ).3 O 0.4?O 0.029 0. OOQ 0.020
73/OR/20 iS 00 ‘. 4 0.’e 0 0.044 0.010 0.020
71/10/01 14 ‘45 1.100 0.025 0.11? 0.135
t3E LESS
K VALUE KNOWN TO
THAN INDICATFD
-------
ST)RET RFTQIEVAL OATE 74/Ifl/30
?7 RJ1 LS2788J1
47 19 30.0 093 14 00.0
SNOWBALL CNEEK
27 •7.5 PENGILLY
T/SwAN LAKE
Co HWY 529 *ING 1.5 M I WSW PENGILLY
I IEPALES 2111204
4 0000 FEET DEPTH
00 30 006?5 00610 00671 00665
DATE TIME OFPTH N0’&N03 TOT KJEL NH3—N PHOS—DIS PHOS—TOT
EPOM OF N-TOTAL N TOTAL OPTHO
TO 1)AY FEET M(,/L ‘IG/L MG/L MG/L P MG/L p
72/10/14 tO 30 0.450 0.1?P 0.00 0.023
7?/11/19 ii 30 u.16 4 0. 00 0.115 0.007 0.020
71/04/05 10 30 .0?4 1.050 0.015 0.005K 0.015
73/04/19 1? 50 1.100 Ø•P 4O 0.006 0.025
73/05/05 13 15 ci.0 4 0. ’ 0 0.02? 0.006 0.020
73/05/20 11 30 0.030 0. 0 0.07 0.007 0.030
73/06/14 tO 35 i.01B 0.900 0.020 0.015 0.025
71/07/2 0 00 0.05) 0.’ 0 0.025 0.019 0.035
73/OB/?0 14 10 C.0 0. 0’) 0.C50 0.027 0.040
73/10/03 14 37 0.04b 0.330 0.073 0.02? 0.035
K VALUE r
-------
S1)0 T ET . TLV L ‘1 T ‘u’l”/ ”)
27 0 5I A5278851 P001341
‘.7 23 00.0 093 10 00.0
N ASHw A UK
27 1.5 PENOILLY
T/S4AN LAKE
O R1EN CREEK
1IEP LFS 2 141204
4 0000 FEET DEPTH
1(f 3i 00 ’ .”, 00 I0 (10611 OOAOS 50051 50053
r)ATF T ’ PT’4 NO’ .N63 Tor KJEL N- ’3N “ .105—0 15 PHOS—TOT FLOW CONDUIT
r o’. 0 r ‘a-TOTAL N TOTAL ORTI-4O RATE FLOW—MOD
0’) OfaY F T ‘lolL ‘iI/L M 3/L ‘lOlL P MG/L P INST MOO MONTHLY
71 /07/07 10 30
C ”U)— •i.9 ”0 1 . O0 3•4Q(1 1.170 5.750
71/37/0? 1 10
71/07/7 10 0’)
I.9’ ’ 10.000 0.120 I.ISO 2.400 0.190 0.165
71/(17/7 I? ‘ 0
71/0N/? 13 00
CPU)— . ai’ l?.”OO 0.1’ 0 5.150 8.200 0.135
71/0M/? ’ I’ 00
71/09/17 10 (‘0
CPU)— ‘. ?(O I1.uOO 0.’Ou 6.I .cl 7.600
71/09/17 24 ( 1
71/10/24 II t 0
C P IT)— 1.6’1 O ’ 1.021 7(1fl 5.900 0.126 0.135
71/10/76 I l “0
71/II/?9 II 00
CP(fl— II. 33 5.”30 0.140 6.’00 5.300 0.108 0.116
71/I I/? ” Ii 30
71/ 17/?) 10 30
CPU)— h’.0(’ ’ l . ‘00 0.?7’) 6.400 ..700 0.228 0.162
71/l?/?l I? 1(’
1.,” 4.uS0 O.L .)O 3.000 4.050 0.?MR 0.269
74fe3/I ’ I I 10
CPU)— 7.0 ’h. ‘j.?SO 1.000 5.250 0.305 0.315
7’’Cl/l ” I’ lii
74 /0 /I 13 (‘0
C .’(l)— °. ‘0) ‘. ‘ fl 1.700 .3. 00 0. 95 0.212
74F -./I O. Of
74/Q5/7, I ’) 10
CL ’(fl— 1.?L I7. t ’(i 2 5ØC. 3.900 0.1 5 0.199
74/Ij’./ 0 I ? 40
7’.’o’-/l “1 if)
C°(T)- ‘.( I. ot 0•))4f ?• .Q() “.10° 0.I .3 0.390
7’./’)’./ I 7 II 40
74’07/I 09 40
C°U)— . i” .,.T5 ’ )’c 2.9(0 6.?Pf) 0.15 1 0.495
74’C7/l II 10
K VALUE hNOWN TO 00 LESS
THAN I’IDICATED
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