U.S. ENVIRONMENTAL PROTECTION AGENCY
NATIONAL EUTROPHICATION SURVEY
WORKING PAPER SERIES
REPORT
ON
SEBASTICOOK LAKE
PENOBSCOT COUNTY
MAINE
EPA REGION V
WORKING PAPER No, 9
PACIFIC NORTHWEST ENVIRONMENTAL RESEARCH LABORATORY
An Associate Laboratory of the
NATIONAL ENVIRONMENTAL RESEARCH CENTER - CORVALLIS, OREGON
and
NATIONAL ENVIRONMENTAL RESEARCH CENTER - LAS VEGAS, NEVADA
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REPORT
ON
SEBASTICOOK LAKE
PENOBSCOT COUNTY
MAINE
EPA REGION V
WORKING PAPER No, 9
WITH THE COOPERATION OF THE
MAINE DEPARTMENT OF ENVIRONMENTAL PROTECTION
AND THE
MAINE NATIONAL GUARD
JUNE, 1974
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CONTE NTS
Page
Foreword ii
List of Maine Study Lakes iv
Lake and Drainage Area Map v
Sections
I. Conclusions 1
II. Introduction 2
III. Lake and Drainage Basin Characteristics 3
IV. Lake Water Quality Sunu iary 4
V. Nutrient Loadings 9
VI. Literature Reviewed 17
VII. Appendices 18
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ii
FOREWORD
The National Eutrophication Survey was initiated in 1972 as a
research project In response to an Administration commitment to
investigate the nationwide 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 fresh water 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, in fact, 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
This report documents the first stage of evaluation of lake and
watershed data collected from the study lake and its drainage basin.
It is formatted to provide state environmental agencies with specific
Information for basin planning [ 3O3(e)], water quality criteria!
standards review [ 3O3(c)J, clean lakes [ 314(a,b)], and water quality
monitoring [ 1O6 and §305(b)] activities mandated by the Federal Water
Pollution Control Act Amendments of 1972.
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11•1
Beyond the single lake analysis, broader based correlations
between nutrient concentrations (and loading) and trophic
condition 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.
ACKNOWLEDGMENT
The staff of the National Eutrophication Survey (Office of
Research & Development, U. S. Environmental Protection Agency)
expresses sincere appreciation to the Maine Department of
Environmental Protection for professional involvement and to the
Maine National Guard for conduct of the tributary sampling phase
of the Survey.
William R. Adams, Commissioner of the Department of Environmental
Protection, and William P. Hinckley and Matthew Scott of the Division
of Lakes and Biological Studies, provided invaluable lake documentation
and counsel during the course of the study.
Major General Edwin W. Heywood (Retired), then the Adjutant
General of Maine, and Project Officer Lieutenant Colonel Earl B. Adams
who directed the volunteer efforts of the forty-one participating Maine
National Guardsmen are also gratefully acknowledged for their assistance
to the Survey.
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iv
NATIONAL EUTROPHICATION SURVEY
STUDY LAKES
STATE OF MAINE
LAKE NAME COUNTY
Moosehead Lake Piscataquis, Somerset
Estes Lake York
Long Lake Cumberl and
Bay of Naples & Sebago Lake Cumberland
Rangeley Lake Franklin
Long Lake Aroos took
Mattawamkeag Lake Aroostook
Sebasticook Lake Penobscot
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V
SEBASTICOOK LAKE
X Lake Sampling Site
0 Tributary Sampling Site
Sewage Treatment Facility
.7 Direct Drainage area Boundary
9 1
(
n e
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SEBASTICOOK LAKE
STORET NO. 2312
I. CONCLUSIONS
A. Trophic Condition:
Sebasticook Lake is a eutrophic water’ body. Reportedly. nui-
sance blooms of algae have occurred periodically in the lake for
many years.
B. Rate—Limiting Nutrient:
The algal assay results and lake data indicate Sebasticook
Lake was nitrogen limited at the time the assay sample was col-
lected. Lake data also indicate nitrogen limitation during the
other sampling periods.
C. Nutrients; Controllability:
1 . Point sources--The survey data indicated that the comniuni-
ties of Dexter and Corinna contributed about 70% of the total annual
phosphorus load to Sebasticook Lake. If 80% removal of total phos-
phorus at these two point sources were instituted, the total annual
phosphárus load to Lake Sebasticook would be reduced to 44% of its
present level.
It is believed that this degree of reduction of the total phos-
phorus load would result in a persistent phosphorus limitation and
would reduce or eliminate nuisance algal blooms.
2. Non-point sources--Of the total non-point source input, the
greatest contribution is made by drainage from the East Branch of the
Sebasticook River which inputs 15% of the annual phosphorus load
and 32% of the annual nitrogen load.
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2
II. INTRODUCTION
Sebasticook Lake is located on the East Branch of the Sebasticook
River in south-central Maine (see map, page v). The watershed is
primarily rolling hills, and the vegetation cover is mainly mixed
soft- and hardwood forests. Lake uses are reported to be boating,
domestic water supply, fishing, hunting, trapping, and swinii ing.
The lake has experienced nuisance algal blooms for many years
along with excessive weed growths. Reportedly, chemical control
with sodium arsenite (1959, 1960, and 1962) and copper sulfate (1964)
has been done for the Sebasticook Lake Association by a private con-
sulting firm.
Past studies have indicated excessive amounts of nutrients enter-
ing Lake Sebasticook via the East Branch of the Sebasticook River
(Anonymous, 1966; Mackenthun, et. al., 1968).
Sebasticook Lake is classified as a eutrophic lake and water qual-
ity is said to have changed little during the past decade.
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3
III. LAKE AND DRAINAGE BASIN CHARACTERISTICS
A. Lake Morphometry:
1. Surface area: 4,288 acres.
2. Mean depth: 19.7 feet.
3. Maximum depth: 58 feet.
4. Volume: 84,473 acre/feet.
5. Mean hydraulic retention time: 200 days.
B. Tributary and Outlet:
(See Appendix A for flow data)
1. Tributaries -
Name Drainage areat Mean Flowt
Sebasticook River - East 2
Branch 55.8 mi 94.3 cfs
Stetson Stream 13.4 mi 2 22.4 cfs
Mulligan Stream 20.8 mi 2 37.2 cfs
Minor tributaries & 2
immediate drainage - 29.0 mi 58.6 cfs
Totals 119.0 mi 2 212.5 cfs
2. Outlet -
Sebasticook River - East 126.0 mi 2 * 212.5 cfs
Branch
C. Precipitation**:
1. Year of sampling: 48.5 inches.
2. Mean annual: 38.2 inches.
* Includes area of lake.
** See Working Paper No. 1, “Survey Methods”.
1- Drainage areas are accurate within ±1% and mean annual flows within ±5%.
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4
IV. LAKE WATER QUALITY SUMMARY
Sebasticook 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 three stations on
the lake and from a number of depths at each station (see map, page v).
During each visit a single depth-integrated (near bottom to surface) sample
was composited from the three stations for phytoplankton identification
and enumeration; and during the last visit, a single five-gallon depth-
integrated sample was collected for algal assay. Also each time, depth-
integrated samples were collected at the stations for chlorophyll a anal-
ysis. Maximum depths sampled were 10 feet at station 1, 14 feet at sta-
tion 2, and 10 feet at station 3.
It should be noted that the Survey Secchi disc values are consistently
less than those observed by the Maine Department of Environmental Protection.
Such variations could be attributed to fluctuations in cloud cover or sun
angle (ambient light conditions), observer technique, water surface dis-
turbance, or may, in fact, be the result of short-term water clarity dif-
ferences.
The results obtained are presented in full in Appendix B, and the data
for the fall sampling period, when the lake was essentially well-mixed, are
sumarized below. Note, however, the Secchi disc sun nary 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
(10/03/72)
Parameter Minimum Mean Median Maximum
Temperature (Cent.) 15.1 15.8 15.8 16.0
Dissolved oxygen (mg/i) 7.5 9.0 9.0 10.0
Conductivity (pmhos) 140 140 140 140
pH (units) 7.3 7.6 7.7 8.0
Alkalinity (mg/i) 29 29 29 30
Total P (mg/i) 0.075 0.081 0.075 0.092
Dissolved P (mg/i) 0.026 0.028 0.028 0.030
NO + NO (mg/i) 0.040 0.040 0.040 0.040
Arn onia ?mg/1) 0.050 0.063 0.050 0.090
ALL VALUES
Secchi disc (inches) 31 44 39 72
B. Biological characteristics:
1 . Phytoplankton* -
Sampling Dominant Number
Date Genera per ml
06/08/72 1. Fragilaria 122
2. Melosira 95
3. Cryptomonas 45
4. Stephanodiscus 27
5. Synedra 7
Other genera 31
Total 327
10/03/72 1 . Fragilaria 3,660
2. Flagellates 1,283
3. Chroococcus 906
4. Anabaena 528
5. Dinobryon 453
Other genera 2,378
Total 9,208
* The August phytoplankton sample was lost in transit.
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6
2. Chlorophyll a -
(Because of instrumentation problems during the 1972 sampling,
the following chlorophyll values may be in error by plus or
minus 20 percent.)
Sampl ing
Date ________ _______________
06/08/72
ting Nutrient Study:
Autoclaved, filtered, and nutrient spiked -
Ortho P Inorganic N
___________ Conc. (mg/i) Conc. (mg/i ) _____________
0.037 0.280
0.043 0.280
0.049 0.280
0.061 0.280
0.097 0.280
0.097 10.280
0.037 10.280
Station
Number
01
02
03
01
02
03
01
02
03
08/07/72
10/03/72
Chlorophyll a
(pg/l) ______
5.0
63.9
22.9
96.1
21 .3
15.8
98.9
80.0
41.2
Maximum Yield
( mg/i-dry wt. )
8.3
8.7
9.0
9.0
8.1
25.6
13.3
C. Limi
1.
Spike (mg/i ) _________ _________ _____________
Control
0.006 P
0.012 P
0.024 P
0.060 P
0.06 P + 10.0 N
10.0 N
2. Discussion—
The control yield of the assay alga, Se enastrum capri-
cornutum , indicates that the potential primary productivity
of Sebasticook Lake was high at the time the assay sample
was collected.
The yield response to increased levels of orthophosphorus
was not significantly different from the control yield, but
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7
the addition of nitrogen produced a significant increase in
yield. This indicates that the lake was nitrogen limited at
the time the sample was collected. This conclusion is sub-
stantiated by the lake data which indicate nitrogen-to-phos-
phorus ratios to be less than 14:1 at all sampling periods
(nitrogen limitation would be expected with N/P ratios of less
than 14:1).
Data from a previous study (Mackenthun, et. al., 1968) in-
dicate nitrogen was limiting in the October-November samples
and in the profundal waters in February, but that phosphorus
was limiting at all other times of the year.
Data from another study (Hall, 1974) indicate nitrogen lim-
itation from June throu h October in 1971. Phosphorus limita-
tion was indicated for the winter and spring months of 1971 in
surface waters, and nitrogen was limiting in the deeper waters
during the same period of time.
D. Trophic Condition:
Sebasticook Lake has been eutrophic for many years. A Federal
Water Pollution Control Agency report (Anonymous, 1966) character-
ized the lake as having almost continuous blooms of nuisance algae,
rather high concentrations of chlorophyll a, and depression or deple
tion of dissolved oxygen with depth.
During the Survey sampling year, the lake exhibited essentially
the same characteristics noted above. Heavy algal blooms were
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8
observed during the August and October sampling visits, chloro-
phyll a concentrations were high, and dissolved oxygen was depressed
with depth.
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9
V. NUTRIENT LOADINGS*
(See Appendix C for data)
For the determination of nutrient loadings, from September, 1972,
through August, 1973, the Maine National Guard collected monthly near-
surface grab samples from the tributary sites indicated on the map (page
v), except for the high runoff months of April and May, when two samples
were collected, and the colder months of the year when one or more sam-
ples were omitted, depending on the site.
Stream flow estimates were provided by the Maine District Office of
the U.S. Geological Survey through an interagency agreement.
In this report, tributary loads were calculated using mean concentra-
tions and mean flows. The loadings for unsampled “minor tributaries and
immediate drainage” (“ZZ” of U.S.G.S.) were calculated from the mean con-
centrations of the unnamed stream at site B-i and mean “ZZ” flows.
Discharges from the Corinna wastewater treatment plant were sampled
by personnel of the Maine Department of Environmental Protection on a
monthly basis, and flow data were provided. However, the untreated
sewage discharge from the town of Dexter was not sampled during the
survey, and nutrient loadings were based on literature coefficients
and estimated contributing population. In this report, it is assumed
that all of the loads measured or estimated reached Sebasticook Lake
during the sampling year, although Keup (1968) noted a loss of about
29% of the phosphorus in Dexter wastes in a four-mile stretch of the
East Branch of the Sebasticook River.
* Based on sampling frequency and variations in concentrations, single
tributary loadings for gaged sites are believed to be within ±16% of
the true value 67% of the time and within ±32% of the true value 95%
of the time.
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10
Industrial effluents were not sampled. However, these contributions
to the loadings of Sebasticook Lake were included in the loads in the
East Branch at site E-3.
A. Waste Sources:
1. Municipal -
Pop. Mean Receiving
Name Served Treatment Flow (mgd) Water
Corinna S.D. 2,000 Act. sldg. 1.232 E. Br., Sebasticook
River
Dexter 3,725 None - E. Br., Sebasticook
River
2. Industrial
Mean Receiving
Name Product Treatment Flow (mgd) Water
Eastland textiles Corinna ? E. Br., Sebasticook
Woolen Co. STP River
Eastland textiles bypass ? E. Br., Sebasticook
Woolen Co. River
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11
B. Annual Total Phosphorus Loading - Average Year:
1 . Inputs -
lbsP/ %of
Source yr total
a. Tributaries (non-point load) -
E. Br., Sebasticook River 3,900 15.0
Stetson Stream 620 2.4
Mulligan Stream 1,240 4.8
b. Minor tributaries & imediate
drainage (non-point load) - 1 ,200 4.6
c. Municipal SIP’s -
Corinna 5,180 19.9
Dexter* 13,040 50.1
d. Septic tanks** - 190 0.7
e. Industrial -
Eastland Woolen Co. bypass -
f. Direct Precipitation* 670 2.6
Total 26,040 100.0
2. 0 tputs-
Lake outlet (E. Br., Sebasticook
River) 18,430
3. Net annual P accumulation - 7,610 pounds
* Estimated; see Working Paper No. 1 , “Survey Methods”.
** Estimated 300 residences on lakeshore.
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12
C. Annual Total Nitrogen Loading - Average Year:
(See discussion, •page 13)
1. Inputs -
lbs NI % of
Source yr total
a. Tributaries (non-point load)
E. Br., Sebasticook River 203,170 32.5
Stetson Stream 31,780 5.1
Mulligan Stream 70,760 11.3
b. Minor tributaries & immediate
drainage (non-point load) - 65,670 10.5
c. Municipal SIP’s -
Corinna 169,440 27.1
Dexter* 35,020 5.6
d. Septic tanks** - 7,050 1 .1
e. Industrial -
Eastland Woolen Co. bypass ? -
f. Direct precipitation* - 41,310 6.6
Total 624,200 100.0
2. Outputs -
Lake outlet (E. Br., Sebasticook
River 463,700
3. Net annual N accumulation - 160,500 pounds
* Estimated; see Working Paper No. 1, “Survey Methods”.
** Estimated 300 residences on lakeshore.
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13
D. Calculation of Nitrogen Loadings:
For the sampling year, it is calculated that the combined
nitrogen load from the Corinna STP, the untreated Dexter dis-
charge, and the non-point contribution of the drainage system
above the point sources totaled 273,880 pounds; but the N-load
at the inlet to the lake was 407,603 lbs/yr--a difference of
133,750 lbs. Part of this difference can be attributed to
runoff from the intervening drainage, but some of the differ-
ence was probably due to the woolen mill bypassing wastes.
However, the N-load given in the table for the East Branch
is that measured at station E-l plus the difference of 133,750
lbs.
It is noted that on a per capita basis, there should have
been about 15,000 lbs/yr of nitrogen in the Corinna effluent;
but, during the sampling year, it is calculated that the con-
tribution from this source was 169,440 lbs/yr. The difference
of 154,440 lbs/yr is attributed to the woolen mill discharges
to the Corinna system.
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E. Mean Annual Non-point Nutrient Export by Subdrainage Area:
Tributary lbs P/mi 2 /yr lbs N/mi 2 /yr
E. Br., Sebasticook River 70 3,641
Stetson Stream 46 2,372
Mulligan Stream 60 3,402
F. Yearly Loading Rates:
In the following table, the existing phosphorus loading
rates are compared to those proposed by Vollenweider (1973).
Essentially, his “dangerous” rate is the rate at which the
receiving waters would become eutrophic or remain eutrophic;
his “permissible” rate is that which would result in the
receiving water remaining oligotrophic or becoming oligo-
trophic if morphometry permitted. A mesotrophic rate would
be considered one between “dangerous” and “permissible”.
Total Phosphorus Total Nitrogen
Units Total Accumulated Total Accumulated
lbs/acr /yr 6.1 1.8 145.6 37.4
grams/m /yr 0.68 0.20 16.3 4.2
Vollenweider loading ‘ates for phosphorus (g/m 2 /yr) based on the
mean depth and mean hydraulic retention time of Sebasticook Lake:
“Dangerous” (eutrophic rate) 0.64
“Permissible” (oligotrophic rate) 0.32
G. Controllability of Nutrients:
It is calculated that during the sampling year, the total
phosphorus loading to Sebasticook Lake from all sources exceeded
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that proposed by Vollenweider as dangerous (i.e., a eutrophic
rate). Of that loading, the communities of Corinna and Dexter
contributed about 70%.
In the following table, the total phosphorus loading rates
that can be achieved by specified levels of phosphorus removal
at Corinna and Dexter are shown and compared to Vollenweider’s
suggested loading rates.
Total P Loading
% P Removal lbs/acre/yr g/m 2 /yr
Existing 6.1 0.68
50 3.9 0.44
70 3.1 0.35
80 2.7 0.30
90 2.2 0.25
100 1.8 0.20
Vol lenwei der:
“Dangerous”
“Permissible”
(eutrophic rate)
(oligotrophic rate)
0.64
0.32
I t will be noted that 70% removal would reduce the loading
rate to just over the permissible level . This degree of reduc-
tion would be expected to result in significant improvement of
the trophic condition of Sebasticook Lake. However, in view of
of the phosphorus resources in the lake it appears that a higher
level of removal would be required to shorten the recovery time
of the lake.
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Matthew Scott of the Maine Department of Environmental
Protection advises that the provision of secondary treatment
at Dexter has priority over nutrient removal at Corinna.
Dexter will probably be funded for preparation of plans in
FY 1976, but funding for preparation of plans for nutrient
removal at Corinna is not scheduled until FY 1977 with funding
for nutrient removal at Dexter some time after that.
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VI. LITERATURE REVIEWED
Anonymous, 1966. Fertilization and algae in Lake Sebasticook, Maine.
F.W.P.C.A., Robert A. Taft San. Engr. Center, Cincinnati.
Hall, Millard W., 1974. Personal communication (unpublished data).
Environmental Studies Center, U. of Maine, Orono.
Hinckley, William P., 1973. Personal communication (Corinna waste
treatment facilities). Dept. of Environmental Protection, Augusta.
Ketelle, Martha J., and Paul D. Uttormark, 1971. Problem lakes in the
United States. EPA Water Pollution Control Res. Series, Proj.
10610 EHR.
Keup, Lowell E., 1968. Phosphorus in flowing waters. Water Research,
Vol. 2, pp. 373-386.
Mackenthun, Kenneth M., Lowell E. Keup, and R. Keith Stewart, 1968.
Nutrients and algae in Lake Sebasticook, Maine. Jour. Water
Poll. Contr. Fed. 40(2), R72-R8l.
Scott, Matthew, 1974. Personal communication (trophic state of Sebas-
ticook Lake; STP construction priorities). Dept. of Environmental
Protection, Augusta.
Vollenweider, Richard A., 1973. Input-output models. MS, Canada Centre
for Inland Waters, Burlington, Ontario.
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VII. APPENDICES
APPENDIX A
TRIBUTARY FLOW DATA
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TPIBUTANY FLOW INFORMATION FOR MAINE
6/25/74
LA(E CODE 2312
SEBASTICOOK LAKE
TOTAL DRAINAGE AREA OF LAKE 126.00
TOTAL DRAINAGE AREA OF LAKE =
SUM OF SUB—DRAINAGE AREAS =
TRTB(JIARY MONTH YEAR
MEAN FLOW DAY FLOW DAY
9 72 11.00 16
10 77 7.90
II 72 50.00
17 7? 35.00
1 73 37.00
7 73 72.00
3 73 209.00
4 73 81.00
5 73 29.00
6 73 12.00
7 73 16.00
8 73 20.00
9 72 58.00
10 72 43.00
II 72 237.00
1? 72 145.00
73 145.00
2 73 237.00
3 73 706.00
4 73 376.00
S 73 145.00
6 73 62.00
7 73 90.00
8 73 100.00
5.20
14 6.10
4 43.00
2 56.00
6 26.00
3 104.00
3 48.00
7 45.00
5 26.00
2 23.00
14 7.50
I I 36.00
16 27.00
14 33.00
204.00
2 232.00
6 100.00
3 341.00
3 162.00
7 208.00
5 129.00
2 119.00
14 42.00
11 178.00
FLOW DAY
FLOW
SIJEI—DRAINAGE
TRIBUTARY ARFA
NORMALIZED FLOWS
JAN FEB MAR APR MAY JUN JUL AUG
?1I?AI
11.40
22.00
22.00
71.00
65.00
20.00
9.30
2.90
2.00
3.40
5.20
25.00
22.00
22.45
23 1?F)
5 5.60
66.OU
73.00
240.00
302.00
101.00
48.00
16.00
10.00
18.00
28.00
119.00
92.00
94.29
2 1 1?E4
126.00
213.00
170.00
509.00
648.00
245.00
113.00
41.00
27.00
42.00
66.00
257.00
225.00
212.78
?11?FI
20.60
33.00
23.00
50.00
122.00
54.00
22.00
10.00
6.90
10.00
16.00
49.00
43.00
37.21
21127?
35.70
71.00
52.00
140.00
159.00
71.00
33.00
12.00
7.90
10.00
16.00
64.00
68.00
58.63
MEAN MONTHLY FLOWS AND DAILY FLOWS
SEP OCT NOV DCC MEAN
SUMMARY
126.00
TOTAL
FLOW
IN
=
2553.60
125.70
TOTAL
FLOW
OUT
=
2556.00
731261
231 2F 3
21 105.00
19 27.00
21 491.00
19 135.00
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TRIBUTARY FLOW INFORMATION FOR MAINE 6/25/74
LAKE COOE 2112 SEBASTICOOK LAKE
MEAN MONTHLY FLOWS AND DAILY FLOWS
TRIBUTARY MONTH YEAR MEAN FLOW DAY FLOW DAY FLOW DAY FLOW
23 12E4 9 72 135.00 16 63.00
10 72 100.00 14 77.00
11 72 511.00 4 439.00
12 72 356.00 2 570.00
1 73 360.00 6 248.00
2 73 552.00 3 795.00
3 73 1500.09 3 345.00
4 73 810.00 7 446.00 21 1050.00
5 73 353.00 5 314.00 19 328.00
6 73 147.00 2 282.00
7 73 231.00 14 109.00
8 73 270.00 11 481.00
231?F1 9 72 32.00 16 15.00
10 72 24.00 14 18.00
11 72 98.00 4 84.00
1? 72 68.00 2 109.00
1 73 56.00 6 39.00
2 73 75.00 3 108.00
3 73 171.00 3 39.00
4 73 152.00 7 84.00 21 198.00
5 73 78.00 5 69.00 19 73.00
6 73 29.00 2 56.00
7 73 56.00 13 21.00
8 73 69.00 11 123.00
2312ZZ 9 72 32.00
10 7 24.00
11 72 127.00
12 72 107.00
1 73 120.00
2 73 169.00
3 73 412.00
4 73 199.00
5 73 102.00
6 73 43.00
7 73 68.00
8 73 79.00
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APPENDIX B
PHYSICAL and CHEMICAL DATA
K - Value is less than indicated
J - Value known to be in error
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STOPET RETRIEVAL DATE 74/06/25
231201
44 51 30.0 069 13 00.0
SEAASTICOOK LAKE
23 MAINE
I IEPALES 2111202
5 0010 FEET DEPTH
00010 00300 00077 00094 00400 00410 00630 00610 00665 00666
DATE TIME DEPTH WATER 00 TRANSP CNDUCTVY PH T ALK N02&N03 NH3-N PHOS—TOT PHOS—DIS
FROM OF TEMP S€CCHI FIELD CACO3 N-TOTAL TOTAL
TO DAY FEET CENT MG/I INCHES MICROMNO SO MG/I MG/I MG/I MG/L P MG/L P
72/06/08 08 28 0000 18.5 9.8 72 120 7.40 24 0.020 0.060 0.032 0.022
08 28 0010 17.4 6.5 130 7.10 30 0.020 0.180 0.044 0.024
72/08/07 10 30 0000 40 150 8.80 29 0.040 0.050 0.059 0.030
10 30 0004 22.8 10.4 145 8.90 28 0.050 0.060 0.072 0.030
10 30 0008 22.8 10.4 140 8.90 29 0.060 0.080 0.062 0.029
72/10/03 07 35 0000 33 140 7.80 29 0.040 0.090 0.092 0.030
07 35 0004 16.0 10.0 140 8.00 29 0.040 0.050 0.075 0.026
07 35 0010 16.0 9.0 140 7.60 30 0.040 0.050 0.075 0.028
32217
DATE TIME DEPTH CHLRPHYL
TROM OF A
TO DAY FEET UG/L
72/06/08 08 28 0000 5.OJ
72/08/07 10 30 0000 96.1J
72/10/03 07 35 0000 98.9J
-------
STORET RETRIEVAL DATE 74/06/25
231202
44 52 48.0 069 15 3o.o
SERASTICOOK LAKE
23 MAINE
I1EPALES 2111202
3 0005 FEET DEPTH
00010 00300 00077 00094 00400 00410 00630 00610 00665 00666
DATE TIME DEPTH WATER DO TRANSP CND*JCTVY PH T *1K N02&N03 NH3—N PHOS—TOT PHOS—DIS
FROM OF TEMP SECCHI FIELD CACO3 N—TOTAL TOTAL
TO DAY FEET CENT MG/L INCHES MICROMHO So MG/L MG/I MG/L MG/L P MG/I P
72/06/08 08 47 0000 18.4 7.2 48 140 7.10 36 0.050 0.150 0.050 0.026
08 47 0005 18.5 6.6 140 7.10 35 0.040 0.130 0.064 0.028
72/08/07 10 50 0000 36 150 8.30 30 0.040 0.090 0.048 0.0?0
10 50 0004 21.9 9.0 150 8.30 30 0.050 0.090 0.050 0.020
72/10/03 07 55 0000 31 140 7.40
07 SS 0004 15.8 9.0 140 7.30
07 55 0014 15.8 7.5 140 7.40
32217
DATE TINE DEPTH ciitRPMY L
FROM OF A
TO DAY FEET UG/L
72/06/08 08 47 0000 63.9J
72/08/07 io so oooo 21.3.)
72/10/03 07 55 0000 80.OJ
-------
STORET RETRIEVAL DATE 74/06/25
231203
44 50 48.0 069 16 36.0
SE8ASTICOOK LAKE
23 MAINE
1 1EPALES 2111202
3 0010 FEET DEPTH
00010 00300 00077 00094 00400 00410 00630 00610 00665 00666
DATE TIME DEPTH WATER DO TRANSP CNDUCTvY PH T ALK NO2 NO3 NH3-N PHOS—TOT PHOS—DIS
FROM OF TEMP SECCHI FIELD CACO3 N—TOTAL TOTAL
TO DAY FEET CENT HG/L INCHES MICRONHO SU MG/L MG/L MG/L UG/L P MG/I P
72/06/08 09 00 0000 17.5 54 130 7.50 30 0.020 0.020 0.025 0.011
09 00 0010 17.3 140 7.90 29 0.010 0.040 0.020 0.012
72/08/07 11 II 0000 150 7.30 29 0.050 0.060 0.045 0.017
11 Ii 0004 20.8 6.4 150 7.00 31 0.050 0.060 0.040 0.021
11 II 0008 20.8 6.0 150 7.20 30 0.040 0.060 0.038 0.020
72/10/03 08 15 0000 38 140 7.75
08 15 0004 15.1 9.4 160 7.80
32217
DATE TIME DEPTH CHLRPHYL
FROM OF A
TO DAY FEET UG/L
72/06/08 09 00 0000 22.9J
72/08/07 11 Ii 0000 15.8J
72/10/03 08 15 0000 41.2J
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APPENDIX C
TRIBUTARY and WASTEWATER
TREATMENT PLANT DATA
K - Value is less than indicated
J - Value known to be in error
-------
STORET RETRIEVAL DATE 74/06/25
2312A1 LS2312A1
46 53 30.0 069 08 30.0
STETSON STREAM
23 15 STETSON
T/SEBASTICOOK LAKE
ST HWY 143 BRDG S OF STETSOW
11EPALES 2111204
4 0000 FEET
DEPTH
DATE
TIME
DEPTH
NO2 .NO3
TOT KJEL
NH3—N
PHOS—DIS
PHOS—TOT
FROM
OF
N—TOTAL
N
TOTAL
ORTHO
TO
DAY
FEET
MG/L
MG/L
MG/L
MG/L P
MG/L P
72/09/16
13 30
0.037
1.980
0.052
0.005K
0.012
72/10/14
11 30
0.065
0.600
0.078
0.005K
0.013
72/11/04
09 55
0.022
0.670
0.050
0.005K
0.017
72/12/02
11 00
0.010K
0.?90
0.009
0.005K
0.015
73/01/06
13 30
0.026
0.500
0.023
0.005K
0.009
73/02/03
14 00
0.039
0.370
0.026
0.005K
0.0 15
73/03/03
14 00
0.105
0.460
0.066
0.00 5K
0.005K
73/04/07
12 45
0.048
0.260
0.009
0.005K
0.010
73/04/21
10 15
0.011
1.700
0.058
0.005K
0.020
73/05/05
10 00
0.016
1.200
0.063
0.005K
0.010
73/05/19
10 00
0.010K
0.270
0.036
0.005K
0.010
73/06/02
13 00
0.010K
0.320
0.019
0.007
0.015
73/07/14
13 00
0.011
0.580
0.033
0.005K
0.025
73/08/LI
09 56
0.0 10K
0.460
0.021
0.005K
0.020
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STORET RETRIEVAL DATE 74/06/25
231281 LS2312B1
44 53 30.0 069 10 00.0
STREAM DRAINING GREENRUSH SWAMP
23 15 STETSON
T/SEBASTICOOK LAKE
ST HWY 222 BRDG W OF STETSON
11EPALES 2111204
4 0000 FEET DEPTH
00630 00625 00610 00671 00665
DATE TIME DEPTH NO2 NO3 TOT KJEL P*13—N PHOS—DIS PHOS—TOT
FROM OF N—TOTAL N TOTAL ORTHO
TO DAY FEET MG/L MG/L MG/L MG/L P MG/L P
72/09/16 13 45 0.096 0.550 0.091 0.005K 0.011
72/10/14 11 10 0.034 0.450 0.054 0.005K 0.008
72/11/04 09 45 0.028 0.420 0.026 0.005K 0.008
73/02/03 12 00 0.105 1.080 0.042 0.005K 0.010
73/04/07 1) 15 0.075 0.150 0.007 0.005K 0.005K
73/04/21 10 00 0.010K 0.370 0.013 0.005K 0.005K
73/05/05 10 00 0.029 1.200 0.052 0.005K 0.010
73/05/19 09 30 0.019 0.230 0.014 0.005K 0.010
73/06/02 10 30 0.020 0.600 0.020 0.005K 0.007
73/07/14 12 15 0.010K 0.345 0.011 0.005K 0.005K
73/08/11 09 50 0.010K 0.440 0.010 0.00 5K 0.025
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STOPET RETRIEVAL DATE 74/06/25
2312C1 L 52312C1
44 53 30.0 069 11 30.0
STREAM DRAINING BROOKS POND
23 15 STETSON
T/SFBASTICOOK LAKE
ST HWY 222 BROG W OF STETSON
11EPALES 2111204
4 0000 FEET DEPTH
00630 00625 00610 00671 00665
DATE TIME DEPTH N02&N03 TOT KJEL NH3-N PHOS—DIS PHOS—TOT
FROM OF N—TOTAL N TOTAL ORTHO
TO DAY FEET MG/L MG/L MG/L MG/L P MG/L P
72/09/16 13 55 0.190 0.880 0.063 0.005K 0.012
72/10/14 11 00 0.250 0.400 0.115 0.005K 0.008
72/11/04 09 40 0.190 0.440 0.031 0.005K 0.008
72/12/02 09 00 0.300 0.290 0.013 0.005K 0.012
73/01/06 12 00 0.625 0.420 0.022 0.005K 0.008
73/04/07 11 00 0.530 0.180 0.021 0.005K 0.005K
73/04/21 09 20 0.320 0.730 0.019 0.005K 0.005K
73/05/05 09 30 0.390 1.380 0.061 0.005K 0.005K
73/05/19 09 10 0.336 0.320 0.060 0.005K 0.010
73/06/02 10 00 0.336 0.300 0.009 0.010 0.010
73/07/14 11 45 0.580 0.460 0.014 0.005K 0.005K
73/08/11 09 45 0.410 0.335 0.009 0.005K 0.015
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STORET RETRIEVAL DATE 74/06/25
2312E1 LS2312E1
45 01 30.0 069 17 30.0
E BR SEBASTICOOK RIVER
23 15 GUILFORD
1/SEBASTICOOK LAKE
1ST BRDG BELO LK WASSOOKEEGOUTLET
11EPALES 2111204
4 0000 FEET DEPTH
00630 00625 00610 00671 00665
DATE TIME DEPTH N02&N03 TOT KJEL NH3-N PHOS—DIS PHOS—TOT
FROM OF N—TOTAL N TOTAL ORTHO
TO DAY FEET MG/L MG/L MC./L MC /L P HG/L P
72/09/16 12 35 0.034 0.044 0.005K 0.010
72/10/14 10 45 0.091 0.400 0.096 0.005K 0.008
72/12/02 14 30 0.052 0.190 0.008 0.005K 0.012
73/02/03 15 50 0.273 0.480 0.058 0.032 0.115
73/03/03 14 45 0.132 0.190 0.052 0.005K 0.005K
73/04/07 14 30 0.210 0.200 0.022 0.005K 0.015
73/04/21 11 15 0.138 0.300 0.018 0.005K 0.005K
73/05/05 11 30 0.084 0.190 0.014 0.005K 0.010
73/05/19 10 00 0.042 0.330 0.012 0.00 5K 0.015
73/06/02 14 30 0.020 0.240 0.013 0.008 0.015
73/07/14 14 30 0.016 0.400 0.024 0.005K 0.010
73/08/11 10 50 0.010K 0.230 0.007 0.005K 0.020
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STORET RETRIEVAL OATE 74/06/25
2312E2 L52312E2
44 57 03.0 069 15 03.0
E BR SEBASTICOOK RIVER
23 15 PITTSFIELD
I/SEBASTICO0I( LAKE
BRDG AT LINCOLN MILLS BELO DEXTER STP
1IEDALES 2111204
4 0000 FEET DEPTH
00630 00625 00610 00671 00665
DATE TIME DEPTH NO2 NO3 TOT KJEL NH3-N PI40S—OIS PHOS—TOT
FROM OF N—TOTAL N TOTAL ORTHO
TO DAY FEET MG/L MG/L MG/I MG/L P MG/L P
72/09/16 13 00 0.550 0.500 0.084 0.068 0.120
72/10/14 10 10 0.230 0.450 0.086 0.040 0.062
72/11/04 10 15 0.210 0.560 0.075 0.020 0.044
72/12/02 14 00 0.231 0.660 0.033 0.016 0.038
73/02/03 14 30 0.330 0.480 0.035 0.022 0.070
73/04/07 14 15 0.280 0.230 0.006 0.005K 0.020
73/04/21 10 45 0.200 0.560 0.021 0.020 0.040
73/05/05 11 00 0.210 2.780 0.097 0.022 0.057
73/05/19 09 45 0.105 1.050 0.039 0.024 0.065
73/06/02 14 00 0.105 0.370 0.024 0.038 0.070
73/08/11 10 20 0.280 0.460 0.033 0.150
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STORET RETRIEVAL DATE 74/06/25
2312(3 LS2312E3
44 53 00.0 069 15 00.0
E BR SEBASTICOOK RIVER
23 15 PITTSFIELD
1/SEBASTICOOK RIVER
BRDG S OF CORINNA BELOW CORINNA WST DISC
I1EPALES 2111204
4 0000 FEET DEPTH
00630 00625 00610 00671 00665
DATE TIME DEPTH NO2 NO3 TOT KJEL N113-N PHOS—DIS PHOS—TOT
FROM OF N—TOTAL N TOTAL ORTHO
TO DAY FEET MG/L MG/L MG/I MG/L P MG/L P
72/09/16 10 50 0.117 3.650 0.920 0.033 0.154
72/10/14 09 55 0.110 3.150 0.700 0.007 0.082
72/11/04 09 30 0.070 1.800 0.410 0.013 0.071
72/12/02 09 20 0.280 1.150 0.170 0.013 0.046
73/04/07 10 30 0.330 0.700 0.078 0.005K 0.030
73/04/21 09 00 0.154 1.150 0.131 0.005K 0.045
73/05/05 09 15 0.170 4.100 0.336 0.006 0.055
73/05/19 09 40 0.064 1.600 0.410 0.010 0.065
73/06/02 09 30 0.092 1.050 0.210 0.016 0.060
73/07/14 11 00 0.060 1.800 0.300 0.016 0.108
73/08/11 09 35 0.037 2.520 0.530 0.075 0.210
-------
STORET RETRIEVAL DATE 74/06/25
2312E4 LS2312E4
44 50 30.0 069 16 30.0
E BR SEBASTICOOpc RIVER
23 15 PITTSFIELD
0/SEBASTICOOK LAKE
BRDG IN NEWPORT AT DAM SPILLWAY
11EPALES 2111204
4 0000 FEET DEPTH
00630 00625 00610 00671 00665
DATE TIME DEPTH N02&N03 TOT KJEL NH3—N PHOS—DIS PHOS—TOT
FROM OF N—TOTAL N TOTAL ORTHO
TO DAY FEET MG/L MG/I MG/I MG/L P MG/I P
72/09/16 14 20 0.051 1.050 0.099 0.028 0.086
72/10/14 09 30 0.033 1.050 0.060 0.014 0.074
72/12/02 09 45 0.050 0.800 0.110 0.008 0.054
73/01/06 09 30 0.073 0.680 0.138 0.007 0.026
73/02/03 10 00 0.096 0.720 0.126 0.009 0.020
73/03/03 09 00 0.189 0.650 0.120 0.005K 0.020
73/04/07 09 30 0.460 0.540 0.046 0.005K 0.020
73/04/21 08 00 0.336 0.890 0.069 0.006 0.020
73/05/05 08 30 0.231 0.120 0.008 0.065
73/05/19 08 40 0.190 0.660 0.030 0.008 0.055
73/06/02 08 30 0.160 0.820 0.093 0.012 0.040
73/07/14 09 30 0.025 0.680 0.046 0.006 0.040
73/08/11 09 15 0.010K 1.050 0.052 0.017 0.055
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STORET RETRIEVAL DATE 74/06/25
2312Fl LS2312F1
44 53 30.0 069 16 30.0
MULLIGAN STREAM
23 15 PITTS FIELD
1/SEBASTICOOK LAKE
ST HWYS 7/11 BRDG 55W COP INA
11EPALES 2111204
4 0000 FEET DEPTH
00630 00625 00610 00671 00665
DATE TIME DEPTH N02&N03 TOT KJEL NH3—N PHOS—DIS PHOS—TOT
FROM OF N—TOTAL N TOTAL ORTHO
TO DAY FEET MG/L MG/L MG/L P’G/L P MG/L P
72/09/16 11 15 0.051 1.300 0.069 0.005K 0.016
72/10/14 09 50 0.056 1.200 0.062 0.005K 0.014
72/11/04 09 25 0.104 0.820 0.031 0.005K 0.014
72/12/02 10 00 0.339 0.026 0.005K 0.014
73/04/07 10 10 0.550 0.360 0.026 0.005K 0.010
73/04/21 08 30 0.350 0.720 0.032 0.005K 0.015
73/05/05 09 00 0.220 1.200 0.072 0.005K 0.015
73/05/19 08 45 0.138 0.400 0.027 0.005K 0.015
73/06/02 09 00 0.115 0.630 0.027 0.010 0.020
73/07/13 10 15 0.120 0.570 0.027 0.005K 0.020
73/08/11 08 30 0.010K 0.750 0.040 0.012 0.035
-------
STORET RETRIEVAL DATE 74/06/25
231250 AS23125 0 P000750
45 55 00.0 069 15 30.0
CORINNA
23 15 PITTSFIELD
T/SEBASTICOOK LAKE
SEBASTICOOK RIVER
1IEPALES 2141204
4 0000 FEET DEPTH
00630 00625 00610 00671 00665 50051 50053
DATE TIME DEPTH N02&N03 TOT KJEL NH3-N PHOS-DIS PP40S—TOT FLOW CONDUIT
FROM OF N-TOTAL N TOTAL ORTHO RATE FLOW—MGD
TO DAY FEET MG/L MG/L MG/L MG/L P MG/L P INST MGD MONTHLY
73/01/31 07 00
CP(T)— 0.120 27.300 1.200 0.065 0.595 1.480 1.430
73/02/0 1 06 00
73/02/15 07 00
CP(T)— 0.175 48.000 2.900 0.120 1.400 1.330 1.330
73/02/16 06 00
73/03/2 07 00
CP(T)— 0.170 34.000 2.600 0.140 0.620 1.450 1.300
73/03/23 06 00
73/04/24 07 00
CP(T)— 0.086 63.000 3.700 0.250 1.700 1.130
73/04/25 07 00
73/06/27 07 00
CP(T)— 0.115 6) .500 14.500 0.450 1.950 1.290 0.947
73/06/28 06 00
73/08/14 07 00
CP(T)— 0.168 47.000 7.900 0.610 1.580 1.400
73/08/15 06 00
73/08/27 07 00
CP(T)— 0.147 35.700 11.200 0.150 0.560 1.230 1.170
73/08/28 06 00
73/09/26 07 00
CP(T)— 0.250 43.000 4.400 0.390 3.000 1.400 1.300
73/09/27 07 00
73/11/06 07 00
CP(T)— 0.100 52.000 6.100 0.210 1.050 1.150 1.150
73/11/07 06 00
-------
STORET RETRIEVAL DATE 74/06/25
231251 AS231251 P002000
45 55 00.0 069 15 30.0
CORINNA BYPASS
23 15 PITTSFIELD
T/SEBASTICOOK LAKE
SEBASTICOOK RIVER
11EPALES 2141204
4 0000 FEET DEPTH
00630 00625 00610 00671 00665 50051 50053
DATE TIME DEPTH NO2&N03 TOT KJEL NH3—N PHOS—DIS PHOS—TOT FLOW CONDUIT
FROM OF N-TOTAL N TOTAL ORTHO RATE FLOW-HGD
TO DAY FEET MG/I MG/I MG/L MG/I P MG/L P INST MGD MONTHLY
73/01/31 07 00
CP(T)- 0.300 0.580 0.150 0.005K 0.045
73/02/0 1 06 00
73/02/15 07 00
CP(T)— 0.380 0.510 0.200 0.035 0.045
73/02/16 06 00
------- |