U.S. ENVIRONMENTAL PROTECTION AGENCY
NATIONAL EUTROPHICATION SURVEY
WORKING PAPER SERIES
REPORT
ON
BAY OF NAPLES AND SEBAGO LAKE
CUMBERLAND COUNTY
NAINE
EPA REGION I
WORKING PAPER No, 5
PACIFIC NORTHWEST ENVIRONMENTAL RESEARCH LABORATORY
An Associate Laboratory of the
NATIONAL ENVIRONMENTAL RESEARCH CENTER - CORVALLIS, OREGON
and
NATIONAL ENVIRONMENTAL RESEARCH CENTER - LAS VEGAS, NEVADA
& GPO 697-O32
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REPORT
ON
BAY OF IWLES AND SEBAGO LAKE
CUMBERLAND COUNTY
MAINE
EPA REGION I
WORKING PAPER No, 5
WITH THE COOPERATION OF THE
MAINE DEPARTMENT OF ENVIRONMENTAL PROTECTION
AND THE
MAINE flATioNAL GUARD
MAY, 1974
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1
CONTENTS
Page
Foreword ii
List of Maine Study Lakes iv
Lake and Drainage Area Map v & vi
Sections
I. Conclusions 1
II. Introduction 2
III. Lake and Drainage Basin Characteristics 3
IV. Lake Water Quality Summary 6
V. Nutrient Loadings 13
VI. Literature Reviewed 21
VII. Appendices 22
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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 oarameters
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 [ g303(e)], water quality criteria!
standards review [ 3O3(c)], clean lakes [ 3l4(a,b)], and water quality
monitoring [ lO6 and §305(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
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 Aroostook
Mattawamkeag Lake Aroostook
Sebasticook Lake Penobscot
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V
(
0
I ,
BAY OF NAPLES
Tributary SarnpJing
Sampling
ai fl e
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vi
SEBAGO LAKE
X Lake Sampling Site
® Tributary Sampling Site
7Direct Drainage Area Boundary
0
Scale
10 Mi.
/
Maine
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THE BAY OF NAPLES and SEBAGO LAKE, MAINE
STORET NOS. 2314 and 2311
I. CONCLUSIONS
A. Trophic Condition:
Based on the data collected during the Survey, the Bay of
Naples and Sebago Lake are considered to be oligotrophic.
Personnel of the Maine Department of Environmental Protection
concur in this assessment.
B. Rate-Limiting Nutrient:
The results of the algal assays indicate that phosphorus
was limiting in both lakes at the time the assay sample was
collected.
C. Nutrient Sources; Controllability:
1. Point Sources - The only point sources of nutrients that
can affect the Bay of Naples and Sebago Lake are those impacting
Long Lake just upstream in the Presumpscot River chain. Inclusion
of phosphorus removal at the planned regional waste treatment
facility at Long Lake would minimize the effect of the source
on the Bay of Naples and Sebago Lake.
2. Non-Point Sources - Over 75% of calculated phosphorus
and nitrogen loading to each lake comes from surface runoff.
At present, septic tank contributions to both lakes are not
believed to be significant. However, comparison of total P
loading with the Vollenweider model suggest that slight increases
may result in degradation in water quality. Thus, as lakeshore
and watershed development progresses in response to increasing
recreational needs, re-evaluation of diffuse sources should be made.
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II. INTRODUCTION
The Bay of Naples (see map, page v) is situated between Long Lake and
Sebago Lake in the upper Presumpscot River drainage system. The lake
supports numerous kinds of fish, both cold- and warmwater species, and is
a thoroughfare for many species moving between Long Lake and Sebago Lake.
The lake has a high summer recreational use, including boating, swimming,
and fishing.
Sebago Lake (see map, page vi) is the deepest lake in Maine and is situ-
ated at the end of the chain (Long Lake, Bay of Naples, and Sebago Lake).
The lake is reported to be one of the most suitable lakes in the country
for the management of salmon and is the home of the famed landlocked salmon,
Salmo salar . Other fish species, such as smalimouth bass and whitefish,
have recently gained popularity with the fisherman, and lake trout ( Salve-
linus namaycush ) have been recently introduced.
Sebago Lake is the main source of the public water supply for the City
of Portland,and is the largest single-source water supply in the State of
Maine.
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III. LAKE AND DRAINAGE BASIN CHARACTERISTICS
A. BAY OF NAPLES :
1. Lake Morphonietry:
a. Surface area: 762 acres.
b. Mean depth: 14 feet.
c. Maximum depth: 44 feet.
d. Volume: 10,668 acre/ft.
e. Mean hydraulic retention time: 26 days.
2. Tributary and Outlet:
(See Appendix A for flow data)
a. Tributaries -
Name Drainage area Mean flow ’
Long Lake outlet 114.0 mi 2 194.8 cfs
Minor tributaries & 2
immediate drainage - 3.8 mi 10.2 cfs
Totals 117.8 mi 2 205.0 cfs
b. Outlet -
Songo River 119.0 mi 2 * 205.0 cfs
3. Precipitation**:
a. Year of sampling: 50.1 inches.
b. Mean annual: 42.8 inches.
* Includes area of lake.
** See Working Paper No. 1, “Survey Methods”.
I Drainage areas are accurate within ±1% and mean annual flows within ±5%.
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B. SEBAGO LAKE :
1 . Lake Morphometry:
a. Surface area: 28,771 acres.
b. Mean depth: 101 feet.
c. Maximum depth: 316 feet.
d. Volume: 2,905,871 acre/ft.
e. Mean hydraulic retention time: 5.4 years.
2. Tributary and Outlet:
(See Appendix A for flow data)
a. Tributaries -
Name _______________
Rich Mill Pond outlet
Northwest River
Muddy River
Crooked River
Songo River
Thomas Pond outlet
Panther Run - Panther
Pond outlet
Minor tributaries &
immediate drainage - __________
Totals
Drainage area
6.2 m i 2
22.0 mi 2
16.0 mi 2
153.0 mi 2
119.0 mi 2
5.3 mi 2
29.9 mi 2
44.6 mi 2
396.0 mi 2
Mean flowt
11.0 cfs
36.2 cfs
27.5 cfs
263.3 cfs
205.0 cfs
8.6 cfs
46.4 cfs
140.8 cfs
738.8 cfs
Drainage areas are accurate within ±1% and mean annual flows within ±5%.
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Name Drainage area Mean flow
b. Outlet -
Presumpscot River 441 .0 mi 2 * 738.8 cfs
3. Precipitation**:
a. Year of sampling: 50.1 inches.
b. Mean annual : 42.8 inches.
* Includes area of lake.
** See Working Paper No. 1, “Survey Methods”.
-I See preceding page.
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IV. LAKE WATER QUALITY SUMMARY
The Bay of Naples and Sebago Lake were sampled three times during
the open-water season of 1972 by means of a pontoon-equipped Huey heli-
copter. Each time, samples for physical and chemical parameters were
collected from stations on the lakes and from a number of depths at
the stations (see maps, pages V and vi). During each visit a single
depth-integrated (15 feet or near bottom to surface) sample was composited
from the stations for phytoplankton identification and enumeration; and
during the last visit, a single five-gallon depth-integrated sample was
composited from each lake for algal assays. Also, each time depth-
integrated samples were collected at the stations for chlorophyll a
analyses. For the Bay of Naples, the maximum depth sampled at the
single station was 19 feet. The maximum depths sampled in Sebago Lake
were 75 feet at station 1, 60 feet at station 2, 10 feet at station 3,
50 feet at station 4, and 8 feet at station 5.
It should be noted that the Survey Secchi disc values are con-
sistently 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 disturbance, or may, in fact, be
the result of short-term water clarity differences.
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
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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.
A. Physical and chemical characteristics:
1 . BAY OF NAPLES -
FALL VALUES
(10/02/72)
Parameter Minimum Mean Median Maximum
Temperature (Cent.) 16.6 16.6 16.6 16.6
Dissolved oxygen (mg/i) 8.7 8.7 8.7 8.7
Conductivity (pmhos) 50 50 50 50
pH (units) 6.3 6.3 6.3 6.3
Alkalinity (mg/i) 10 10 10 10
Total P (mg/i) 0.007 0.009 0.009 0.012
Dissolved P (mg/i) 0.006 0.006 0.006 0.007
NO + NO (mg/i) 0.020 0.030 0.030 0.040
Am onia mg/i) 0.050 0.060 0.060 0.070
ALL VALUES
Secchi disc (inches) 96 126 126 156
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2. SEBAGO LAKE -
FALL VALUES
(10/02/72)
Parameter Minimum Mean Median Maximum
Temperature 8.6 15.1 15.7 15.8
Dissolved oxygen 9.0 9.4 9.4 10.0
Conductivity 50 50 50 50
pH 6.3 6.8 6.8 7.0
Alkalinity 10 11 10 13
Total p 0.006 0.008 0.008 0.010
Dissolved p 0.005 0.007 0.007 0.009
NO + NO 0.040 0.098 0.100 0.160
Am onia 0.040 0.059 0.055 0.110
ALL VALUES
Secchi disc 60 199 216 288
B. Biological characteristics:
1 . BAY OF NAPLES -
a. Phytoplankton* -
Sampling Dominant Number
Date Genera per ml
10/02/72 1. Fragilaria 2,792
2. Dinobryon 1,208
3. Flagellates 1,208
4. Anabaena 1,057
5. Melosira 1,019
Other genera 7,284
Total 9,736
* The other phytoplankton samples were lost in transit.
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b. Chlorophyll a -
(Because of instrumentation problems during the 1972
sampling, the following values may be in error by plus
or minus 20 percent.)
Sampling Station Chlorophyll a
Date Number ( pg/l )
06/08/72 01 1 .7
08/07/72 01 1.9
10/02/72 01 1.9
2. SEBAGO LAKE -
a. Phytoplankton* -
Sampling Dominant Number
Date Genera per ml
06/03/72 1. Asterionella 45
2. Dinobryon 37
3. Synedra 25
4. Nitzschia 22
5. Navicula 20
Other genera 55
Total 204
10/02/72 1 . Dinobryon 397
2. Flagellates 266
3. Melosira 241
4. Synedra 75
5. Fragilaria 50
Other genera 344
Total 1 ,376
* The August phytoplankton sample was lost in transit.
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b. Chlorophyll a -
(Because of instrumentation problems during the 1972
sampling, the following values may be in error by plus
or minus 20 percent.)
Sampling
Date
06/03/7 2
Station
Number
01
02
03
04
05
01
02
03
04
05
01
02
03
04
05
Chlorophyll a
(pg/l)
1 .0
2.4
1 .4
2.3
2.7
2.0
1 .0
0.9
0.9
1.6
1.3
1.1
1.1
1.1
1.5
b. Discussion -
The control yield of the assay alga, Selenastrum capri-
cornutum , shows that the potential primary productivity of
08/07 / 72
10/02/72
C. Limiting Nutrient Study:
1 . BAY OF NAPLES -
a. Autoclaved, filtered, and nutrient spiked -
Ortho P
Inorganic N Maximum yield
Spike (mg/l) Conc. (mg/i)
Conc. (mg/i) (mg/i-dry wt.)
Control
0.006
0.012
0.024
0.060
0.060
10.0 N
P
P
P
P
P+l0.O N
0.002
0.036
0.2
0.008
0.036
0.5
0.014
0.036
0.8
0.026
0.036
0.7
0.062
0.036
0.7
0.062
10.036
39.2
the Bay of Naples was relatively low at the time the sample
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was collected. Also, the increasing yields with the in-
creasing increments of orthophosphorus (up to about 0.014
mg/i) show that the Bay of Naples was phosphorus limited.
At ortho-P concentrations higher than about 0.014 mg/i
however, yields do not increase until nitrogen is also
added which indicates the lake would become nitrogen lim-
ited if ortho-P concentrations were increased beyond 0.014
mg/i . Note that the addition of only nitrogen produced a
yield not significantly different than the control yield.
2. SEBAGO LAKE -
a. Autoclaved, filtered, and nutrient spiked -
Ortho P Inorganic N
___________ Conc. (mg/l) Conc. (mg/i ) ____ ______
0.004 0.061
0.010 0.061
0.016 0.061
0.028 0.061
0.064 0.061
N 0.064 10.061
0.004 10.061
Maximum yield
( mg/l y wt. )
0.1
1 .4
1.6
1.6
1.7
30.5
0.1
Spike (m g/1 ) ____________ ____________ _____ ______
Control
0.006 P
0.012 P
0.024 p
0.060 p
0.060 P+l0.0
10.0 N
b. Discussion -
The control yield of the assay alga, Selenastrum capri-
cornutum , shows that the potential primary productivity of
Sebago Lake was relatively low at the time the sample was
collected. The yield did not increase significantly with
increasing increments of orthohphosphorus until nitrogen
was also added. At ortho-P concentrations higher than
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about 0.010 mg/i , yields do increase significantly until
nitrogen is also added which indicates the lake would be-
come nitrogen limited if ortho-P concentrations were in-
creased beyond 0.010 mg/i. Note that the addition of only
nitrogen produced a yield not significantly different than
the control yield.
D. Trophic Condition:
1 . BAY OF NAPLES -
Based on Survey data, the Bay of Naples is considered oligo-
trophic. Dissolved oxygen ranged from 8.4 mg/i to 10.5 mg/i for
all samples taken. Nutrient levels were low when compared to
the other 1972 Survey lakes. When ranking the Bay of Naples with
other 1972 Survey lakes on nutrient levels (i.e., total and dis-
solved phosphates and inorganic nitrogen) at least 98 percent
of all the lakes had higher levels of the above nutrients.
Chlorophyll a values were quite low with a range from 1.7 pg/i
to 1 .9 pg/i
2. SEBAGO LAKE -
Based on the data collected during the Survey, Sebago Lake
is considered oligotrophic. Dissolved oxygen ranged from 8.6
mg/i to 14.0 mg/i with a mean of 10.6 mg/i for all samples
taken. None of the samples taken in the hypolimnion were be-
low 10.0 mg/i.
Nutrient levels were very low, and the mean chlorophyll a
level was 1.5 pg/i for all samples taken.
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V. NUTRIENT LOADINGS*
(See Appendix B for data)
For the determination of nutrient loadings, from September, 1972,
through August, 1973, the Maine National Guard collected near-surface
grab samples from each of the tributary sites indicated on the maps
(pages i and ii), except for the high runoff months of April and May
when two samples were collected at most stations.
Through an interagency agreement, estimated flows for the year of
sampling and a “normalized” or average year were provided by the Maine
District Office of the U.S. Geological Survey for the tributary sites
nearest the lakes*.
There are no sewage treatment plants impacting directly on the Bay
of Naples or Sebago Lake.
In this report, tributary loads for both lakes were calculated using
mean concentrations and mean flows. The loadings for unsampled “minor
tributaries and immediate drainage” (“ZZ” of U.S.G.S.) for the Bay of
Naples were estimated using mean ZZ flows there and the mean concentrations
in the Northwest River (Sebago Lake tributary) at station C-l . The ZZ
loadings for Sebago Lake were calculated using mean ZZ flows there and
mean concentrations in the Northwest River at station C-i
*Based on sampling frequency and variations in concentrations, single
tributary loadi g 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 tim
**Flow data reported by U.S.G.S. at Sebago Lake outlet for the last 10 years
are within 6% error of the 85 year record. These data (Appendix A) are
adjusted from 616.99 cfs to 738.8 cfs mean annual flow so that the mean
annual inflow equals the mean annual outflow.
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A. BAY OF NAPLES :
1. Annual Total Phosphorus Loading - Average Year -
a. Inputs -
lbsP/ %of
Source yr total
(1) Tributaries (non-point load) -
Long Lake outlet 3,060 88.2
(2) Minor tributaries &
immediate drainage
(non-point load)*_ 200 5.8
(3) Municipal STP’s -
None -
(4) Septic tanks** - 90 2.6
(5) Industrial —
None -
(6) Direct Precipitation* - 120 3.4
Total 3,470 100.0
b. Outputs -
Lake outlet - Songo River 2,820
c. Net annual P accumulation - 650 lbs.
* Estimated; see Working Paper No. 1, “Survey Methods”.
** Estimated 147 dwellings w/in 100 yards of lake, including camps.
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2. Annual Total Nitrogen Loading - Average Year -
a. Inputs -
lbs N I % of
Source yr total
(1) Tributaries (non-point load) -
Long Lake outlet 173,660 87.5
(2) Minor tributaries &
immediate drainage
(non-point load)*_ 13,990 7.1
(3) Municipal STP’s -
None - -
(4) Septic tanks** - 3,450 1 .7
(5) Industrial -
None - -
(6) Direct precipitation* - 7,340 3.7
Total 198,440 100.0
b. Outputs -
Lake Outlet - Songo River 268,370
c. Net annual N loss - 69,930 lbs.
* Estimate; see Working Paper No. 1, “Survey Methods”.
** Estimated 147 dwellings w/in 100 yards of lake, including camps.
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B. SEBAGO LAKE :
1 . Annual Total Phosphorus Loading - Average Year -
a. Inputs -
lbsP/ %of
Source yr total
(1) Tributaries (non-point load) -
Songo River 2,820 13.8
Crooked River 6,220 30.5
Northwest River 780 3.8
Muddy River 650 3.2
Rich Mill Pond outlet 390 1.9
Panther Run - Panther
Pond outlet 730 3.6
Thomas Pond outlet 150 0.7
(2) Minor tributaries &
immediate drainage
(non-point load)* - 3,050 14.9
(3) Municipal STP’s -
None -
(4) Septic tanks** — 1,140 5.6
(5) Industrial -
None - -
(6) Direct Precipitation* - 4,490 22.0
Total 20,420 100.0
b. Outputs -
Lake outlet 8,730
c. Net annual P accumulation - 11,690 lbs.
* Estimated; see Working Paper No. 1, “Survey Methods”.
** Estimated 1800 dwellings w/in 100 yds of lake, including camps.
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2. Annual Total Nitrogen Loading - Average Year -
a. Inputs -
lbs NI % of
Source yr total
(1) Tributaries (non-point load) -
Songo River 268,370 22.2
Crooked River 242,580 20.1
Northwest River 49,740 4.1
Muddy River 27,390 2.3
Rich Mill Pond outlet 18,670 1.5
Panther Run - Panther
Pond outlet 74,170 6.1
Thomas Pond outlet 13,560 1 .1
(2) Minor tributaries &
immediate drainage
(non-point load)* - 193,470 16.1
(3) Municipal STP’s -
None - -
(4) Septic tanks** - 42,890 3.6
(5) Industrial -
None - -
(6) Direct precipitation* - 277,180 22.9
Total 1,208,020 100.0
b. Outputs -
Lake Outlet 1,063,180
c. Net annual N accumulation - 144,840 lbs.
* Estimated; see Working Paper No. 1, “Survey Methods”.
** Estimated 1800 dwellings w/in 100 yds of lake, including camps.
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C. Mean Annual Non-point Nutrient Export by Sub-drainage Area:
1. BAY OF NAPLES
Tributary lbs P/mi 2 /yr lbs N/mi 2 /yr
Long Lake outlet 27 1 ,523
2. SEBAGO LAKE
Tributary lbs P/mi 2 /yr lbs N/mi 2 /yr
Songo River 24 2,255
Crooked River 41 1 ,585
Northwest River 35 2,261
Muddy River 41 1,712
Rich Mill Pond outlet 63 3,011
Panther Pond outlet 24 2,481
Thomas Pond outlet 28 2,558
D. Yearly Loading Rate:
In the following tables, 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 oligotrophic
if morphometry permitted. A mesotrophic rate would be considered
one between “dangerous” and “permissible”.
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1 . BAY OF NAPLES -
Total Phosphorus Total Nitrogen
Units Total Accumulated Total Accumulated
1bs/acr /yr 4.6 0.9 260.4 loss
grams/rn /yr 0.52 0.10 29.2 -
Vollenweider loading rates for phosphorus (g/m 2 /yr) based on mean
depth and mean hydraulic retention time of Bay of Naples:
“Dangerous” (eutrophic rate) 1.48
“Permissible” (oligotrophic rate) 0.74
2. SEBAGO LAKE -
Total Phosphorus Total Nitrogen
Units Total Accumulated Total Accumulated
lbs/acr /yr 0.7 0.4 42.0 5.0
grams/rn /yr 0.08 0.04 4.7 0.6
Vollenweider loading rates for phosphorus (g/rn 2 /yr) based on mean
depth and mean hydraulic retention time of Sebago Lake:
“Dangerous” (eutrophic rate) 0.48
“Permissible”(oligotrophic rate) 0.24
E. Nutrient Controllability:
At this time, both the Bay of Naples and Sebago Lake are re-
ceiving phosphorus loadings at rates below those proposed by
Vollenweider as “permissible” (i.e., an oligotrophic rate), but
both lakes are threatened. For example, if phosphorus loadings
to the Bay of Naples were increased by only 2 ibs/acre/yr, or
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1,530 lbs/yr for the entire lake, the permissible limit would be
reached. As for Sebago Lake, because of its much greater retention
time, an increase of only 1.5 lbs/acre/yr (ca. 43,000 lbs/yr for
the entire lake) would result in a phosphorus loading rate exceeding
the permissible limit.
The only point sources of nutrients, other than septic tanks,
that can affect the Bay of Naples and Sebago Lake are those im-
pacting Long Lake just upstream in the upper Presumpscot River
chain (see Working Paper No. 4). Inclusion of phosphorus removal at
the planned regional waste treatment facility at Bridgeton would
minimize the effect of the source on the Bay of Naples and Sebago
Lake and prevent a dangerous increase in phosphorus loading rates.
At present, septic tank contributions to the Bay of Naples and
Sebago Lake are not believed to be a problem. However, as lake-
shore development around these lakes progresses in response to in-
creasing recreational demands, these sources may become significant.
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VI. LITERATURE REVIEWED
Anonymous, 1913. Fourth annual report. State of Maine Water Storage
Comm., Waterville.
Anonymous, 1963. Bay of Naples survey report. Dept. of Inland
Fisheries & Game, Augusta.
Anonymous, 1963. Sebago Lake survey report. Dept. of Inland Fisheries
& Game, Augusta.
Anonymous, 1974. Report on Long Lake, Cumberland County Maine.
U. S. Environmental Protection Agency, National Eutrophication
Survey, Working Paper No. 4, Washington, D. C.
Hinckley, William P., 1973. Personal communication (recre tiona1
activities; industrial inputs to the Bay of Naples and Sebago
Lake). Dept. of Environmental Protection, Augusta.
Scott, Matthew, 1973. Personal communication (uses and trophic
states of the Bay of Naples and Sebago Lake). 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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TRIBUTARY FLOW INFORMATION FOR MAINE
6/25/74
LA’
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TRIBUTARY FLOW INFORMATION FOR MAINE 6/25/74
LAcE CODE 2311 SE8AGO LAKE
TOTAL DRAINAGE AREA OF LAKE 441.00
SUN-DRAINAGE NORMALIZED FLOWS
TRIRUTARY AREA JAN FEB MAR APR MAY JUN JUL aUG SEP OCT NOV DEC MEAN
231 1A1 441.00 598.00 645.00 652.00 676.00 733.00 696.00 548.00 653.00 578.00 569.00 531.00 528.00 616.99
23 1 1R 1 6.24 12.00 8.00 18.00 32.00 17.00 7.70 3.10 2.20 2.80 4.10 12.00 13.00 10.99
231 1C 1 22.00 36.00 27.00 71.00 105.00 58.00 27.00 9.50 6.00 7.80 12.00 37.00 38.00 36.18
231101 16.00 27.00 18.00 36.00 76.00 55.00 24.00 10.00 6.80 7.10 11.00 27.00 32.00 27.50
211 1E1 153.00 206.00 144.00 361.00 814.00 530.00 247.00 91.00 53.00 71.00 116.00 289.00 238.00 263.31
2 1IF1 119.00 202.00 161.00 449.00 458.00 27.00 35.00 48.00 33.00 90.00 207.00 408.00 344.00 205.06
23 1 1G1 5.?9 11.00 8.00 18.00 22.00 12.00 5.70 2.10 1.50 1.60 2.40 7.80 11.00 8.59
23 1 1H 1 29.90 55.00 44.00 101.00 119.00 68.00 35.00 12.00 7.40 8.70 13.00 42.00 52.00 46.39
2311ZZ 90.30 208.00 208.00 556.00 304.00 89.00 60.00 12.00 6.10 11.00 15.00 111.00 114.00 140.84
SUMMARY
TOTAL DRAINAGE AREA OF LAKE = 441.00 TOTAL FLOW IN = 8872.38
SUM OF SUB—DRAINAGE AREAS 441.73 TOTAL FLOW OUT = 7407.00
MEAN MONTHLY FLOWS AND DAILY FLOWS
TRIRUTAPY MONTH YEAR MEAN FLOW DAY FLOW DAY FLOW DAY FLOW
231 1A 1 9 72 811.00 16 819.00
10 72 819.00 14 818.00
II 72 815.00 4 794.00
1? 72 802.00 3 806.00
I 73 811.00 7 819.00
? 73 820.00 3 819.00
3 73 819.00 4 831.00
4 73 798.00 7 781.00 21 781.00
5 73 1533.00 5 1470.00 19 1700.00
6 73 1069.00 2 805.00
7 73 1244.00 14 1390.00
73 825.00 12 831.00
?31 1R 9 72 4.40 16 3.S0
10 72 4.00 14 4.40
II 72 ‘3.00 4 17.00
1? 72 24.00 3 29.00
1 73 24.00 7 12.00
2 73 24.00 3 72.00
3 73 51.00 4 9.70
4 73 27.00 7 29.00 21 22.00
5 73 34.00 5 22.00 19 48.00
6 73 21.00 2 21.00
7 73 21.00 14 13.00
8 73 19.00 12 14.00
-------
T J3JTA2y FLO. 1’ FO 4aT!ON F IAINE
6/25/74
_A• CO) 3) 11
LAcE
‘ E MQ lT4LY LO 5 A i) )A!L’ FLOUS
13.00
1 ) 73 12.00
Ii 72 70.30
I’ 7? “9.00
I 73 71.00
3 73 83.00
3 73 200.00
4 73 ‘ 9.30
5 73 115.30
A 73 72.00
7 73 55.00
52.00
73 11.00
10 73 11.00
I I 7? 51.00
1’ 7?
1 73 53.00
73 55.00
3 73 101.00
4 7 ) 55.00
5 73 109.00
73 “4.00
7 73 59.00
73 S9. )0
7’ 111.00
10 7? 114.00
II 72 545.00
I’ 73 433.00
1 71 408.00
? 73 “1.00
3 ‘3 1010.00
4 7) 692.30
5 73 1050.00
4 73 659.00
7 73 27.00
7) ‘ 51.J0
S ‘‘ 57.00
I) 2 252.00
Ii 2 603.00
I? “.1.00
1 73 315.00
3 73 353.03
3 73 1I..0. 0
73 330.00
5 73
A 3 344.00
73 311.00
73 3?4.00
16 9.50
1 ’. 13.00
4 53.00
3 b 3 o
7 34.00
3 248.00
4 38.00
7 95.00
S 75.0)
2 73.00
1’ .0.00
12 39.00
8.70
1’ 12.00
4 39.00
3 10.00
7 25.00
3 1 54.00
4 19.00
7 70.00
5 71.00
2 55.00
14 43.00
12 44.00
16 e.oo
14 125.00
4 415.00
3 520.00
7 195.00
3 1320.00
4 192.00
7 747.00
5 62.00
2 572.00
1 ’. 399.00
I ? 345.00
15 53.00
I ’ 2 5Q.00
4 504.00
3 588.00
7 128.00
3 1340.00
132.00
7 3 ”1.00
5 387.00
2 ) 1.00
1 ’. 205.00
1? 252.00
567.00
1490.00
T I jTA ”’ ‘O’.T-’ EA ‘EAN FLOW DAy
FLOW DAY
FLOW DAY FLOW
?1 l I
23 1 1 )1
211 l’ I
211 Fl
21 73.00
19 163.00
21 53.00
19 155.00
21
19
21 228.00
IS 846.00
-------
TRIBUTARY FLOW Ii’WORMATION FOR MAINE 6/25/74
LAcE CODE 21)1 SEBAGO LAKE
MEAN MONTHLY FLOWS AND DAILY FLOWS
TRIBUTARY MONTH YEAR MEAN FLOW DAY FLOW DAY FLOW DAY FLOW
211161 9 72 2.50 16 2.00
10 72 2.40 14 2.60
11 7? 15.00 4 11.00
12 72 70.00 3 24.00
1 73 2?.00 7 11.00
2 73 ?4.00 3 72.00
1 73 51.00 4 9.70
4 73 19.00 7 21.00 21 16.00
S 71 24.00 5 16.00 19 14.00
6 73 15.00 2 15.00
7 73 14.00 14 8.70
H 73 13.00 12 9. 0
2311 -i1 9 72 14.00 16 11.00
10 72 13.00 14 14.00
11 7? 79.00 4 60.00
7? 95.00 3 1)4.00
1 73 109.00 7 52.00
? 73 135.00 3 404.00
1 73 ?84.00 4 54.00
4 73 101.00 7 109.00 21 83.00
5 73 135.00 5 88.00 19 192.00
6 73 43.00 2 95.00
7 73 83.00 14 51.00
8 73 64.00 12 48.00
231117 9 72 17.00
10 7? 15.00
11 7’ 210.00
1? 7? 207.00
1 73 412.00
7 73 636.00
3 73 1560.00
4 73 ?58.00
5 73 176.00
6 73 160.00
7 73 83.00
8 71 53.00
-------
APPENDIX B
PHYSICAL AND CHEMICAL DATA
K - Value is less than indicated
J - Value known to be in error
-------
STORET RETRIEVAL DATE 74/06/25
231401
43 58 00.0 070 36 00.0
BAY OF NAPLES
23 MAINE
1 IEPALES 2111202
5 0020 FEET DEPTH
00010 00300 00077 00094 00400 00410 00630 00610 00665 00666
DATE TIME DEPTH WATER 00 TRANSP CNOUCTVY PH T ALK N02&N03 NH3—N PHOS—TOT PHOS—OIS
FROM OF TEMP SECCHI FIELD CACO3 N—TOTAL TOTAL
TO DAY FEET CENT MG/L INCHES MICROUHO SU MG/L MG/L MG/L MG/L P MG/L P
72/06/08 14 55 0000 18.4 9.8 156 30 7.00 10K 0.050 0.010K 0.004 0.003
14 55 0005 18.4 9.8
14 55 0010 18.3 9.8
14 55 0015 17.9 9.9 30 7.00 10K 0.050 0.020 0.003 0.002K
14 55 0019 12.4 10.5 30 6.60 10K 0.050 0.020 0.003 0.002
72/08/07 1440 0000 22.6 96 50K 6.70 10K 0.040 0.050 0.007 0.005
14 40 0004 8.4 50K 6.70 10K 0.040 0.030 0.006 0.003
14 40 0015 22.6 8.6 50K 6.60 10K 0.030 0.040 0.005 0.003
72/10/02 12 00 0000 50K 6.25 10K 0.020 0.050 0.012 0.007
12 00 0004 16.6 8.7 50K 6.35 10K 0.040 0.070 0.007 0.006
32217
DATE TIME DEPTH CHIRPHYL
FROM OF A
TO DAY FEET UG/L
72/06/OR 14 55 0000 1.7J
72/08/07 14 40 0000 1.9 )
72/10/02 12 00 0000 1.7J
-------
STORET RETRIEVAL DATE 74/06/25
231101
43 46 00.0 070 31 24.0
SEBAGO LAKE
23 MAINE
1IEPALES 2111202
3 0030 FEET DEPTH
00010 00300 00077 00094 00400 00410 00630 00610 00665 00666
DATE TINE DEPTH WATER DO TRANSP CNDUCTVY PH T ALK N02&N03 NH3—N PHOS—TOT PHOS—DIS
FROM OF TEMP SECCHI FIELD CACO3 N—TOTAL TOTAL
TO DAY FEET CENT MG/I INCHES MICROMHO SU MG/L MG/L UG/L MG/I P MG/I P
72/06/03 14 30 0000 11.5 11.9 260K 20 6.90 10K 0.150 0.030 0.003 0.002K
14 30 0010 8.8 13.4 lOX 0.140 0.030 0.002K 0.002K
14 30 0015 8.3 14.0 lOX 0.140 0.030 0.003 0.002K
14 30 0030 7.7 11.9 20 6.80 lOX 0.140 0.020 0.003 0.002
72/08/07 17 55 0000 288 50K 6.70 10 0.100 0.040 0.003 0.003
17 55 0004 21.3 9.2 50K 6.70 LOX 0.110 0.060 0.003 0.003
17 55 0015 16.6 10.0 50K 6.60 lOX 0.130 0.050 0.004 0.004
17 55 0022 13.4 10.8 50K 6.50 10K 0.140 0.050 0.004 0.003
17 55 0035 11.2 11.6 50K 6.40 11 0.150 0.040 0.003 0.002
17 55 0050 8.3 11.4 50K 6.40 11 0.150 0.040 0.005 0.003
17 55 0075 7.2 11.2 50K 6.30 10 0.150 0.030 0.004 0.003
72/10/02 09 30 0000 276 50K 7.00 lOX 0.100 0.060 0.009 0.009
09 30 0004 15.7 9.6 50K 6.80 13 0.100 0.040 0.008 0.007
09 30 0015 15.7 9.4 50K 6.80 12 0.100 0.050 0.007 0.008
09 30 0025 15.7 9.1 50K 6.80
09 30 0030 15.7 9.4 50K 7.00 13 0.100 0.040 0.008 0.008
32217
DATE TIME DEPTH CHIRPHYL
FROM OF A
TO DAY FEET UG/L
72/06/03 14 30 0000 1.0)
72/08/07 17 55 0000 2.0)
72/10/02 09 30 0000 I.3J
-------
STORET RETRIEVAL DATE 74/06/25
231102
43 48 42.0 070 32 30.0
SEBAGO LAKE
23 MAINE
1 1EPALES 2111202
3 0050 FifT DEPTH
00010 00300 00077 00094 00400 00410 00630 00610 00665 00666
DATE TINE DEPTH WATER 00 TRANSP CNDUCTVY PH T *1K P4O2 N03 NH3—N PHOS—TOT PHOS—DIS
FROM OF TEMP SECCHI FIELD CACO3 N—TOTAL 0TAL
TO DAY FEET CENT ‘4G/L INCHES MICROMNO SU MG/ I. MG/I MG/I MG/L P NG/L P
72/06/03 15 10 0000 14.0 12.4 216 20 7.00 10K 0.130 0.050 0.002 0.002K
15 10 0010 11.9
15 10 0015 10.3 12.9 20 7.00 10K 0.140 0.040 0.003 0.002K
15 10 0025 7.5 13.8 20 6.90 10K 0.150 0.030 0.002K 0.002K
15 10 0050 5.6 12.4 20 6.90 10K 0.140 0.030 0.002K 0.002K
72/08/07 17 25 0000 288 50K 6.70 11 0.100 0.030 0.004 0.004
17 25 0004 21.2 8.8 50K 6.70 11 0.100 0.030 0.003 0.003
17 25 0015 21.1 8.6 50K 6.60 10 0.100 0.020 0.004 0.003
17 25 0022 21.0 10.2 50K 6.50 10 0.130 0.040 0.004 0.004
17 25 0030 13.8 10.2 50K 6.40 10 0.120 0.030 0.004 0.002
17 25 0035 9.9 11.2 50K 6.40 10K 0.150 0.040 0.003 0.003
72/10/02 10 00 0000 276 50K 6.80 lOX 0.100 0.060 0.010 0.008
10 00 0004 15.4 9.4 50K 6.75 10K 0.100 0.060 0.006 0.007
10 00 0015 15.4 9.4 50K 6.80 lOX 0.100 0.050 0.007 0.008
10 00 0030 15.3 9.4 50K 6.70 10K 0.100 0.050 0.007 0.005
10 00 0060 8.6 10.0 50K 6.35 10K 0.160 0.060 0.008 0.007
32217
DATE TIME DEPTH CHL.RPNYL
FROM OF A
TO DAY FEET UG/L
72/06/03 15 10 0000 2.4J
72/08/07 17 25 0000 1.OJ
72/10/02 10 00 0000 1.1)
-------
STORET RETRIEVAL DATE 74/06/25
231103
43 51 24.0 070 37 30.0
SEBAGO LAKE
23 MAINE
11EPALES 2111202
3 0012 FEET DEPTH
00010 00300 00077 00094 00400 00410 00630 00610 00665 00666
DATE TIME DEPTH WATER DO TRANSP CNDUCTVY PH T ALK N02&N03 NH3—N PHOS—TOT PHOS—DIS
FROM OF TEMP SECCHI FIELD CACO3 N-TOTAL TOTAL
TO DAY FEET CENT MG/L INCHES MICPOMHO SU MG/L MG/L MG/L MG/L P M6/L P
72/06/03 15 50 0000 14.7 12.1 120 20 7.00 10K 0.110 0.0 10K 0.004 0.002K
15 50 0010 13.3 11.3 20 7.00 10K 0.110 0.010 0.002K 0.002K
72/08/07 17 10 0000 168 50K 6.70 10 0.100 0.030 0.003 0.003
17 10 0004 21.6 8.6 50K 6.70 10K 0.100 0.030 0.003 0.002
17 10 0009 21.6 12.6 50K 6.60 10K 0.100 0.030 0.004 0.003
72/10/02 ii 40 0000 144 50K 6.70 10K 0.120 0.100 0.007 0.008
11 40 0004 15.8 9.4 50K 6.75 10K 0.100 0.050 0.006 0.007
11 40 0008 15.8 9.5 50K 7.00 10K 0.100 0.070 0.007 0.006
32217
DATE TIME DEPTH CHLRPHYL
FROM OF A
TO DAY FEET UG/L
72/06/03 15 50 0000 1.4J
72/08/07 17 10 0000 0.9. )
72/10/02 11 40 0000 1.1.)
-------
STORET RETRIEVAL DATE 74/06/25
231104
43 53 24.0 070 28 42.0
SE8AGO LAKE
23 MAINE
1 IEPALES
3
2111202
0050 FEET DEPTH
DATE TIME DEPTH
FROM Of
TO DAY FEET
72/06/03 16 10 0000
72/08/07 16 00 0000
72/10/02 10 30 0000
32217
C ML R PH V L
A
UGh
2.3J
0.9J
1.1)
00010
00300
00077
00094
00400
00410
00630
00610
DATE
TIME DEPTH WATER
DO
TRANSP
CNDUCTVY
PH
T ALK
N02&NO3
NH3—N
PHOS—TOT
PHOS—DIS
FROM
OF
TEMP
SECCHI
FIELD
CACO3
N—TOTAL
TOTAL
TO
DAY FEET
CENT
MG/L
INCHES
MICPOMHO
SU
MG/I
MG/L
MG/I
MG/L P
MG/I P
72/06/03
16 10 0000
17.4
10.9
146
20
7.10
10K
0.110
0.010
16 10 0010
15.5
12.0
20
7.00
10K
0.110
0.010
0.003
0.002K
16 10 0020
13.5
12.4
20
7.00
10K
0.120
0.010K
0.002K
0.002K
16 10 0030
7.3
13.5
20
7.00
10K
0.140
0.010K
0.002K
0.002K
16 10 0050
5.6
12.6
20
6.90
10K
0.140
0.010
0.002K
0.002K
72/08/07
16 00 0000
252
50K
6.70
10K
0.130
0.070
0.005
0.003
16 00 0004
22.1
8.8
50K
6.70
10K
0.100
0.030
0.004
0.005
16 00 0015
22.1
9.0
50K
6.60
10K
0.100
0.020
0.006
0.003
16 00 0020
22.0
8.6
50K
6.60
10K
0.100
0.030
0.005
0.005
16 00 0030
13.4
11.4
50K
6.40
10K
0.150
0.060
0.004
0.004
16 00 0040
8.3
11.2
50K
6.40
10K
0.170
0.060
0.005
0.003
16 00 0050
7.8
11.4
50K
6.40
10K
0.160
0.060
0.003
0.003
72/10/02
10 30 0000
276
50K
6.80
10K
0.120
0.110
0.009
0.009
10 30 0004
15.7
9.4
50K
6.80
12
0.100
0.050
0.007
0.007
10 30 0015
15.7
9.6
50K
6.70
10
0.100
0.050
0.008
0.005
-------
STORET RETRIEVAL DATE 74106/25
231105
43 54 48.0 070 34 36.0
SEBAGO LAKE
23 MAINE
1 IEPALES 2111202
3 0006 FEET DEPTH
00010 00300 00077 00094 00400 00410 00630 00610 00665 00666
DATE TIME DEPTH WATER 00 TRANSP CNDUCTVY PH 1 ALK N026N03 NH3—N PHOS—TOT PHOS—0 15
FROM OF TEMP SECCHI FIELD CACO3 N—TOTAL TOTAL
TO DAY FEET CENT MG/L INCHES NICRONHO SO NG/L MG/L MG/L MG/L P MG/L P
72/06/03 18 50 0000 18.0 10.3 72 20 7.00 10K 0.100 0.010 0.003 0.002
72/08/07 16 40 0000 144 50K 6.70 10K 0.120 0.060 0.006 0.004
16 40 0004 21.6 9.0 50K 6.70 10K 0.120 0.060 0.003 0.003
16 40 0008 21.5 9.0 50K 6.60 10K 0.110 0.050 0.002 0.003
72/10/02 11 00 0000 60 50K 6.6S 10K 0.040 0.060 0.010 0.006
11 00 0004 15.5 9.0 50K 6.60 10K 0.040 0.060 0.008 0.008
32217
DATE TIME DEPTH CHLRPHYL
FROM OF A
TO DAY FEET UG/L
72/06/03 18 50 0000 2.TJ
72/08/07 16 40 0000 1.6J
72/10/02 Ii 00 0000 1.5J
-------
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
2314A1 LS2314A1
43 58 00.0 070 56 00.0
LONG LAKE OUTLET
23 15 SEBAGO LAKE
T/BAY OF NAPLES
us 302 BRDC’ F OF NAPLES
11E ALES 2111204
4 0000 FEET DEPTH
00630 00625 00610 00671 00665
DATE TIME DEPTH NO?&N03 TOT KJEL NH3—N PHOS-DIS PHOS-TOT
FPOM OF N—TOTAL N TOTAL ORTHO
TO DAY FEET MG/L 4G/L MG/L MG/L P MG/L P
72/09/16 12 0 0.043 0.300 0.056 0.005K 0.005K
72/10/14 10 45 0.050 0.150 0.059 0.005K 0.005K
7? 12/02 11 30 0.020 0.450 0.014 0.005K 0.012
73/01/07 10 15 0.035 0.210 0.015 0.005K 0.005K
73/02/03 1? 20 0.058 0.200 0.018 0.005K 0.005K
73/03/03 10 50 0.084 0.340 0.021 0.005K 0.010
73/04/08 13 70 0.069 0.120 0.011 0.005K 0.005K
73/04/?1 14 15 0.061 0.210 0.005K 0.005K 0.005K
73/05/05 11 20 0.075 0.280 0.056 0.005K 0.005K
73/05/20 16 30 0.054 0.720 0.019 0.005K 0.005K
73/06/02 10 25 0.056 0.240 0.0)4 0.005K 0.010
73/07/14 11 15 0.048 0. 80 0.030 0.OOSK 0.005K
73/08/12 13 20 0.011 0.250 0.023 0.007 0.015
-------
STORET RETRIEVAL DATE 74/06/25
2314131 231 1F 1
43 56 00.0 070 35 00.0
SONGO RIVER
23 15 SEBAGO LAKE
0/BAY OF kJAPIES
BROG W EDGE OF SONGO LX
1IEPALES 2111204
4 0000 FEET DEPTH
00630 00625 00610 00671 00665
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/i MG/I P MG/L P
72/09/16 12 30 0.036 0.750 0.052 0.005K 0.005K
72/10/14 12 15 0.055 0.800 0.080 0.005K 0.005K
72/11/04 11 00 0.026 0.280 0.025 0.005K 0.006
72/12/02 09 30 0.022 0.460 0.015 0.005K 0.010
73/01/07 11 15 0.042 0.840 0.044 0.00 5K 0.006
73/04/07 0.067 0.350 0.011 0.005K 0.005K
73/04/21 0.069 0.270 0.01? 0.005K 0.010
73/05/05 0.120 0.790 0.016 0.005K 0.005K
73/05/19 0.115 0.260 0.009 0.005K 0.010
73/06/02 0.052 0.200 0.008 0.005K 0.005K
73/07/14 09 45 0.048 0.840 0.022 0.005K 0.005K
73/08/1? 0.015 1.470 0.052 0.009 0.010
-------
STORET RETRIEVAL DATE 74/06/25
2311A1 LS23I1A1
43 48 00.0 070 27 00.0
PRESUMPSCOT RIVER
23 15 GRAY
0/SEBAGO LAKE
WHITE ROCK ROAD CRSG NE OF N GORHAM
1 1EPALES 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 ORTIIO
TO DAY FEET MG/L P4G/L MG/L MG/L P MG/L P
72/09/16 10 20 0.093 2.400 0.065 0.005K 0.008
72/10/14 09 00 0.110 0.200 0.054 0.005K 0.005K
72/11/04 09 15 0.112 0.520 0.048 0.005K 0.006
72/12/03 08 55 0.115 0.210 0.007 0.005K 0.005K
73/01/07 09 55 0.126 0.280 0.019 0.005K 0.006
73/02/03 10 35 0.132 0.440 0.033 0.005K 0.005
73/03/04 08 00 0.138 0.840 0.024 0.005K 0.005K
73/04/21 0.115 0.370 0.015 0.005K 0.005K
73/05/05 0.110 0.120 0.008 0.005K 0.005K
73/05/19 0.105 0.970 0.007 0.00 5K 0.005K
73/06/02 0.096 0.670 0.033 0.005K 0.005K
73/07/14 08 30 0.089 0.920 0.046 0.005K 0.005K
73/08/12 0.061 0.160 0.018 0.005K 0.010
-------
STORET RETRIEVAL DATE 74/06/25
2311B1 LS2311B 1
43 47 00.0 070 33 00.0
RICH MILL POND
23 15 SEBAGO
T/SEBAGO LAKE
OFF ST HWY 1)4 1.75 MI NW OF SEBAGO LAKE
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 P4G/L MG/L MG/L MG/L P MG/L P
72/09/16 13 40 0.220 1.290 0.210 0.011 0.028
72/10/14 14 04 0.067 0.700 0.075 0.005K 0.020
72/11/04 11 35 0.059 0.660 0.060 0.007 0.021
72/12/03 12 00 0.039 0.480 0.058 0.005K 0.022
73/01/07 14 00 0.042 0.880 0.110 0.005K 0.025
73/02/03 0.075 0.520 0.054 0.008 0.030
73/03/04 13 00 0.084 0.970 0.105 0.005K 0.020
73/04/07 0.031 0.270 0.044 0.005K 0.010
73/04/21 0.025 0.460 0.020 0.005K 0.010
73/05/05 0.025 0.092 0.00 5K 0.010
73/05/19 0.1)0 0.280 0.012 0.005K 0.005K
73/06/02 0.010K 0.320 0.006 0.010 0.010
73/07/14 13 00 0.022 0.630 0.028 0.005K 0.015
73/08/12 0.060 0.945 0.036 0.006 0.025
-------
STORET RETRIEVAL OATE 74/06/25
2311C1 LS23 11C3
43 52 00.0 070 38 30.0
NORTHWEST RIVER
23 15 SEBAGO
T/SEBAGO LAKE
ST HWY 11 XING N OF E SEBAGO
I1EPALES 2111204
4 0000 FEET DEPTH
00630 00625 00610 00671 00665
DATE TIME DEPT 4 NO?&N03 TOT KJEL NH3—N PHOS—DIS PHOS-TOT
FROM OF N—TOTAL N TOTAL OPTHO
TO DAY FEET MG/L M6/L MG/L MG/L P MG/L P
72/09/16 13 16 0.056 0.482 0.060 0.006 0.014
72/10/14 33 22 0.098 1.300 0.140 0.005K 0.011
72/11/04 11 45 0.023 0.480 0.039 0.005K 0.012
7?/12/03 13 45 0.020 0.370 0.014 0.005K 0.009
73/02/03 0.040 0.440 0.017 0.006 0.010
73/04/07 0.010K 0.250 0.013 0.005K 0.005K
73/05/05 0.014 0.165 0.014 0.005K 0.010
73/05/19 0.014 0.120 0.010 0.005K 0.005K
73/06/02 0.010K 0.310 0.006 0.010 0.010
73/07/14 12 00 0.025 1.800 0.105 0.005K 0.015
73/08/12 0.063 1.600 0.052 0.006 0.025
-------
STORET RETRIEVAL DATE 74/06/25
231101 LS2311 01
43 55 30.0 070 37 00.0
MUDDY RIVER
23 15 SEBAGO
T/SEBAGO LAKE
ST HWY 11 BROG IN S NAPLES
1IEPALES 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 HG/L P MG/L P
72/09/16 13 00 0.042 0.603 0.058 0.005K 0.013
72/10/14 12 45 0.130 0.500 0.115 0.005K 0.014
72/11/04 11 15 0.072 0.460 0.046 0.005K 0.016
72/12/03 11 00 0.063 0.420 0.027 0.005K 0.011
73/01/07 13 00 0.070 0.500 0.042 0.005K 0.007
73/02/03 13 00 0.046 0.390 0.022 0.006 0.006
73/03/04 12 00 0.078 0.920 0.036 0.005K 0.015
73/04/07 0.027 0.540 0.021 0.005K 0.010
73/04/21 0.021 0.150 0.012 0.005K 0.010
73/05/05 0.014 0.600 0.026 0.005K 0.010
73/05/19 0.105 0.140 0.010 0.005K 0.005K
73/06/02 0.010K 0.280 0.005K 0.009 0.015
73/07/14 10 45 0.016 0.520 0.016 0.005K 0.015
73/08/12 0.016 0.350 0.020 0.005K 0.015
-------
STORET RETRIEVAL DATE 74/06/25
72/09/1
72/10/14
7?/1 1/04
12/03
73/02/03
73/04/0 7
73/04/21
73/05/05
73/05/19
73/0 6/0 2
73/07/14 10 05
73/08/1?
DATE
FROM
TO
TIME DEPTH
OF
D Y FEET
11 43
11 00
10 40
10 15
2311E1 L 52311E1
43 56 00.0 070 34 30.0
CROOKED RIVER
23 15 SEBAGO
1/SEBAGO LAKE
BPDG IN SONGO LOCK
1IEPALES 2111204
4 0000 FEET DEPTH
00630
00625
00610
00671
00665
NO? .NO3
TOT KJEL
NH3-N
PHOS—DIS
PHOS-TOT
N-TOTAL
N
TOTAL
ORTHO
P4G/L
MG/L
MG/I
MG/L P
MG/L P
0.073
0.250
0.066
0.010
0.017
0.063
0.400
0.075
0.005K
0.013
0,045
0.290
0.036
0.005K
0.014
0.063
0.460
0.018
0.005K
0.011
0.050
0.650
0.023
0.005K
0.005K
0.044
0.420
0.037
0.005K
0.010
0.034
0.310
0.013
0.005K
0.015
0.110
0.260
0.013
0.005K
0.005K
0.110
0.130
0.006
0.005K
0.005K
0.021
0.260
0.007
0.010
0.015
0.067
0.440
0.037
0.005K
0.010
0.062
1.000
0.120
0.017
0.030
-------
STORET RETRIEVAL DATE 74/06/25
2311&1 LS231161
43 54 30.0 070 31 00.0
THOMAS POND OUTLET
23 IS SEBAGO
T/SEBAGO LAKE
XING SSE OF S CASCO
1 1EPALES
4
00665
PHOS—TOT
MG/L P
2111204
0000 FEET DEPTH
00630
00625
00610
00671
DATE
TIME
DEPTH
N02&N03
TOT KJEL
NH3-N
PHOS—DIS
FROM
OF
N—TOTAL
TOTAL
ORTHO
TO
DAY
FEET
P4G/L
MG/L
MG/L
MG/L P
72/09/16
11 24
0.036
0.780
0.063
0.005K
0.010
72/10/14
10 15
0.034
0.550
0.067
0.005K
0.009
72/11/04
10 15
0.016
0.460
0.030
0.005K
0.016
72/12/03
09 50
0.023
0.230
0.015
0.00 5K
0.010
73/01/07
10 45
0.030
0.540
0.032
0.005K
0.007
73/02/03
11 45
0.044
0.790
0.037
0.005K
0.005K
73/03/04
11 20
0.044
0.440
0.020
0.005K
0.005K
71/04/07
0.031
0.210
0.016
0.005K
0.010
73/04/21
0.028
0.230
0.012
0.005K
0.010
73/05/05
0.105
0.220
0.010
0.005K
0.015
73/05/19
0.110
7.200
0.086
0.005K
0.005K
73/06/02
0.010K
1.050
0.044
0.009
0.010
73/07/14
09 00
0.011
0.280
0.016
0.005K
0.005K
73/08/1?
0.017
2.700
0.084
0.005K
0.010
-------
STORET RETRIEVAL DATE 74/06/25
2311H1 L 52311H1
43 54 00.0 070 28 00.0
PANTHER RUN—PANTHER POND OUTLET
23 15 GRAY
T/SEBAGO LAKE
BROG IN NE RAYMOND
1 IEPALES
4
00630
00625
00610
00671
00665
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
MC,/L
MC./L P
HG/L P
2111204
0000 FEET DEPTH
72/09/16
11
05
0.053
0.9 7
0.080
0.008
0.012
72/10/14
09
45
0.036
0.800
0.067
0.005K
0.011
72/11/04
09
45
0.026
0.380
0.038
0.005K
0.011
7?/ 2/03
09
22
0.021
0.630
0.015
0.005K
0.008
73/01/07
10
45
0.017
0.560
0.029
0.005K
0.006
73/02/03
11
55
0.024
0.720
0.031
0.005K
0.005K
73/04/07
0.023
0.320
0.048
0.005K
0.005K
73/04/21
0.014
0.480
0.097
0.005K
0.005K
73/05/05
0.110
0.420
0.015
0.005K
0.005K
73/05/19
0.110
0.100K
0.007
0.005K
0.005K
73/06/02
0.010K
0.520
0.024
0.009
0.010
73/07/14
08
30
0.014
0.069
0.005K
0.005K
73/08/12
0.011
1.600
0.054
0.005K
0.010
------- |