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 3.1 8 9.5 10 3
1983 9 9.0 9 1
1990 8 8.0 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
3.1 8 8.8 10 1.7 Inf 1

Most recent late summer temperature and dissolved oxygen profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
1983-09-09
Depth (m) TEMP DO
0 22.0 8.2
1
2
3
4
5
6 21.8 8.2
7
8
9 12.0 9.6
10 11.6 9.6
11
12
13
14
15 10.2 9.9
16
17
18
19
20
21 9.8 10.0
22
23
24 9.3 10.0
25
26
27 9.0 10.0
28
29
30
31
32
33
34
35 8.8 9.3
36
37
38
39
40 8.8 9.4
41
42
43
44
45 8.8 9.4
46
47
48
49
50 8.8 9.4
51
52
53
54
55 8.8 9.4

Recent temperature and dissolved oxygen profile plots

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