Data period: through 2018

Town County Delorme Map # True Basin Flushing Rate Elevation
SEBAGO CUMBERLAND 4 1 0.15 flushes/yr 267 ft
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 2018 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
1972 11.5 20 4.9
1981 8.7 9.8 11.0 6
1982 7.3 10.2 12.2 5
1983
1990 4.7 31 7.2 7.9 10.2 12.2 11
1991
2000 8.4 10.5 11.8 8
2017 9 8.0 53 7.3 4 8.6 8.6 8.6 1 2.2 2.2 2.2

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
9 8.1 35 7.3 4 4.9 7.3 9.9 12 6.2 2.2 2.2 2.2

Temperature and Dissolved Oxygen Profiles

Late summer only; limited to eight most recent profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
1990-08-21
1990-08-27
1990-09-04
1990-09-11
1991-08-13
1991-08-27
1991-09-10
2017-09-14
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO
0 22.3 8.5 25.3 8.8 22.2 8.0 21.1 8.7 23.0 8.3 21.1 8.9 20.5 9.0 21.7 9.0
1 22.4 8.5 23.8 9.1 22.3 8.0 20.8 8.7 22.6 8.5 21.1 8.9 20.5 9.0 21.1 9.0
2 22.4 8.5 22.8 9.2 22.3 8.0 20.4 8.7 22.2 8.5 21.0 8.9 20.5 9.0 20.3 9.0
3 22.3 8.5 22.6 9.3 22.3 8.0 20.3 8.8 22.0 8.5 20.8 9.0 20.4 9.0 19.7 9.1
4 22.3 8.5 22.2 9.3 22.3 7.9 20.3 8.8 21.9 8.5 20.7 8.9 20.4 8.9 19.6 9.1
5 22.3 8.5 22.1 9.2 22.3 8.1 20.2 8.7 21.9 8.4 20.7 8.9 20.4 8.9 19.6 9.0
6 22.2 8.5 22.0 9.2 22.3 8.1 20.2 8.7 21.6 8.3 20.6 8.8 20.1 8.7 19.4 9.0
7 22.2 8.5 22.0 9.3 22.3 8.0 20.2 8.6 21.5 8.5 20.6 8.9 18.5 9.1 19.1 9.0
8 22.1 8.5 21.9 9.2 22.3 8.2 20.1 8.7 21.4 8.5 19.2 8.9 17.8 9.2 18.5 8.9
9 21.4 8.6 21.7 9.2 22.3 8.1 19.7 8.7 21.4 8.6 16.6 9.3 15.9 9.6 17.7 9.0
10 14.3 10.3 16.2 10.4 15.2 9.6 17.6 9.1 15.0 10.1 14.7 9.9 14.8 9.7 16.4 9.2
11 12.5 10.5 12.6 11.2 12.6 10.0 15.5 9.4 13.1 10.5 13.8 9.9 13.7 9.9 13.1 9.7
12 11.9 10.6 11.7 11.2 10.9 10.0 13.6 9.8 10.4 11.0 13.0 10.1 13.1 10.0 11.3 10.1
13 11.2 10.6 10.9 11.5 10.0 10.3 11.7 10.0 9.9 11.2 12.2 10.2 12.6 10.2 10.3 10.2
14 10.7 10.7 10.3 11.6 9.7 10.3 11.3 10.1 9.5 11.2 12.2 10.3 12.1 10.2 9.7 10.4
15 10.3 10.8 10.0 11.6 9.6 10.4 10.8 10.2 9.2 11.3 9.3 10.4
16 9.9 10.9 9.7 11.6 9.5 10.4 10.3 10.2 11.3 10.5 11.3 10.4
17 9.6 10.8 9.8 10.3 8.7 10.4
18 9.4 10.9 9.4 11.5 9.0 10.4 9.5 10.3 8.5 11.4 10.6 10.6 10.8 10.5
19 9.2 11.0 8.3 10.4
20 9.1 11.0 8.9 11.6 8.7 10.5 9.1 10.3 9.9 10.7 10.4 10.5
21 8.9 11.0 8.0 11.4 8.0 10.4
22 8.7 11.0 8.6 11.7 8.5 10.5 8.7 10.3 9.4 10.8 9.9 10.5
23 8.7 11.0 7.7 10.3
24 8.6 11.0 8.4 11.8 8.3 10.5 7.7 11.5 8.9 10.9
25 8.4 11.1 8.5 10.2 9.7 10.5 7.5 10.3
26 8.3 11.0 8.3 11.7
27 8.3 11.0 8.1 10.5 7.5 11.4
28 8.2 11.0 8.2 11.7 8.2 10.3 8.0 10.9 8.8 10.6
29 8.1 11.0
30 8.0 11.0 8.1 11.7 8.0 10.4 8.1 10.2 7.4 11.4 7.7 10.8 8.6 10.7 7.2 10.2
31
32
33
34
35 7.9 11.5 7.9 10.3 8.0 10.2 7.3 11.4 7.4 10.7 8.3 10.6 7.0 10.0
36
37
38
39
40 7.8 10.6 7.8 8.6 7.9 10.0 7.2 11.3 7.2 10.7 8.0 10.1 6.9 9.7
41
42
43
44
45 7.8 8.4 7.9 0.6 7.1 10.4 7.0 10.5

Most recent temperature and dissolved oxygen profile plots

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