Data period: through 2017

Town County Delorme Map # True Basin Flushing Rate
SEBAGO CUMBERLAND 4 1 0.15 flushes/yr
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
96 m
(316 ft)
33 m
(109 ft)
11,944 ha
(29,514 ac)
3,977,000,000 m3
(3,224,206 ac-ft)
458 km2
(177 mi2)

Secchi Disk Transparency Graphs

Graph Legend: Secchi symbols = average Secchi Disk Transparency Values; tick marks = maximum and minimum values for each year.

## [1] "No 2017 Secchi Disk Transparency Data"

Water Chemistry and Trophic State Parameters

Table Legend:

Color: Color (SPU), Alk: Alkalinity (mg/l CaCO3), SpCon: Specific Conductivity (\(\mu\)S/cm), pH: pH (standard units)

TP = Total Phosphorus (\(\mu\)g/L) – EC: Epilimnion Core, SG: Surface Grab, BG: Bottom Grab, PG: Profile Grab

SDT = Secchi Disk Transparency (m) – Min: minimum value, Avg: average value, Max: maximum value, n: number of months with Secchi readings per year, b: number of times Secchi disk was observed touching the bottom of the lake per year

Chl = Chlorophyll-a (\(\mu\)g/L) – Min: minimum value, Avg: average value, Max: maximum value
Year Color Alk SpCon pH TP-EC TP-SG TP-BG TP-PG SDT-Min SDT-Avg SDT-Max SDT-n SDT-b Chl-Min Chl-Avg Chl-Max
1977 3.4 7.4 9.2 10.8 2
1979 4.0 34 7.6 9.5 11.6 7
1980 4.0 33 7.6 11.2 13.4 6
1983 4.0 29 8.8 9.5 10.7 6
1984 5.8 7.6 9.1 5
1985 4.5 34 8.5 11.3 13.1 4
1986 7.9 9.7 11.1 4
1987 6.7 7.2 7.6 3
1988 9.0 9.9 10.7 5 1
1989 6.1 7.0 7.3 2
1990 8.8 8.8 8.8 1

Lake Chemistry and Trophic Summary Data - Overall Summary Values:

Avg Color Avg Alk Avg SpCon pH Avg TP-EC Avg TP-SG Avg TP-BG Avg TP-PG SDT-Min SDT-Avg SDT-Max SDT-n Chl-Min Chl-Avg Chl-Max
4.1 32 3.4 5.8 9.2 13 4.1 Inf 1

Most recent late summer temperature and dissolved oxygen profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
1984-09-13
1984-09-24
1985-08-07
1985-08-20
1986-08-01
1986-08-15
1986-09-05
1988-08-03
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO
0 19.0 8.9 19.5 9.2 20.4 8.9 22.0 9.2 19.0 8.8 25.2 8.2
1
2 21.5 9.7 22 8.2 20.2 8.4 21.9 8.9 19.0 8.8
3 17.5 9.3 21.0 9.9 22 8.3 20.2 8.3 21.9 8.9 19.0 8.5
4 20.1 8.0
5 20.1 8.2 21.8 8.8 19.0 8.5 24.8 8.1
6 17.2 9.1 20.0 10.0 22 8.1 20.1 8.4 20.9 8.9 19.0 8.6
7 20.0 10.2
8 19.0 8.9 18.5 10.4 20.0 8.2 18.3 9.2 18.5 8.5
9 19.0 8.9 17.0 8.9 17.0 10.8 15.0 9.7 16.4 9.4 16.9 8.8
10 15.5 9.8 14.7 9.0 23.5 8.4
11 15.5 8.6 14.9 8.6 16.0 11.0 11.6 10.2 14.9 9.9 12.5 9.2
12 10.3 9.1 12.7 8.7 15.6 11.6 10.0 10.4 12.5 10.3 11.9 9.4
13 11.3 11.8
14 11.0 8.7 10.5 11.9 9.0 10.9 11.1 10.9 10.9 9.3
15 8.5 9.2 10.2 8.8 10.2 12.0 8.5 10.9 10.1 11.2 10.1 9.6 22.9 8.4
16
17 10.0 8.9 9.6 12.1 8.2 11.0 9.5 11.1 10.0 9.5
18 8.5 9.4 9.5 8.9 9.0 12.1 8.0 11.2 9.0 11.4 9.9 9.8
19
20 9.0 12.1 8.0 11.2 8.8 11.4 9.2 9.8 22.4 8.1
21 8.2 9.4 9.0 8.9 8.8 12.1 7.9 11.3 8.4 11.5 9.0 9.7
22
23 8.5 12.1 7.8 11.2 8.2 11.6 8.9 9.9
24 8.0 9.4 8.5 9.0 8.3 12.1 7.6 11.2 8.0 11.8 8.8 10.0
25 20.5 8.1
26 8.5 9.0 8.2 12.1 8.0 10.0
27 6.0 9.4
28
29 20.5 8.1
30 8.0 8.5 18.8 9.0
31
32
33
34
35 13.0 10.2
36
37
38
39
40 11.1 10.6
41
42
43
44
45 10.1 11.0
46
47
48
49
50 9.4 10.9
51
52
53
54
55 8.8 11.0
56
57
58
59
60 8.5 11.3
61
62
63
64
65 8.4 11.4

Recent temperature and dissolved oxygen profile plots

Temperature (°C), Dissolved Oxygen (mg/L)