Data period: through 2018

Town County Delorme Map # True Basin Flushing Rate Elevation
CASCO CUMBERLAND 5 1 0.95 flushes/yr 426 ft
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
6 m
(19 ft)
3 m
(9 ft)
64 ha
(158 ac)
1,804,095 m3
(1,463 ac-ft)
3 km2
(1.1 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
1978 7.0 3.0 5.0 6.0 5
1979 12.0 32 9.0 2.5 4.7 6.0 6 5 3.4 3.4 3.4
1980 5.5 5.7 6.2 5 3
1983 5.0 5.7 6.0 3 2
1984 5.5 10 4.3 4.9 6.0 4 6 3.2 3.2 3.2
1985 4.6 5.2 5.6 4 5
1987 9.0 42 10.0 6.1 6.1 6.1 1 1
1991 8.0 39 7.4 8.0 5.8 5.8 5.8 1
1992 9.2 7.1 8.5 5.3 5.6 6.0 5 4 1.4 1.4 1.4
1993 10.0 6.9 7.0 6.2 6.2 6.2 1 1 2.4 2.4 2.4
1994 7.0 5.8 10.0 5.5 5.6 5.9 3 2
1995 9.0 8.0 5.4 5.4 5.4 2 2
1998 11.0 17.0 4.0 5.4 6.1 5 6 13.0 13.0 13.0
1999 4.6 5.3 6.1 5 9
2000 5.5 6.0 6.5 6 10
2001 5.0 5.6 6.2 6 10
2002 5.6 5.9 6.3 6 10
2003 7.5 13.5 76 7.0 5.6 5.9 6.2 6 10 3.0 3.0 3.0
2004 5.6 5.9 6.3 6 7
2005 5.2 5.9 6.4 5 7
2006 8.5 4.5 5.6 6.5 6 11
2007 6.0 8.0 47 7.2 10.0 5.4 6.0 6.8 6 8
2008 4.8 5.8 6.2 6 6
2009 7.0 4.5 5.7 6.4 8 9
2010 6.0 11.0 5.0 5.5 6.0 7 9 2.6 2.6 2.6
2012 6.0
2013 6.0
2014 5.0 6.0 6.0 6.0 1
2015 11.0 4.8 5.2 5.4 6 4
2016 8.0 4.8 5.1 5.4 5 3
2017 8.0 6.0 6.0 6.0 1 1 3.6 3.6 3.6

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
6.8 9.3 47 6.4 9 8 10 2.5 5.6 6.8 4.5 1.4 4.1 13

Temperature and Dissolved Oxygen Profiles

Late summer only; limited to eight most recent profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
1992-09-15
1993-08-21
1994-09-14
1995-08-14
1998-09-03
2003-08-12
2010-09-07
2017-09-13
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO
0 21 8.7 23 8.5 19 8.6 26 7.8 24 8.2 25 7.8 23 7.5 21 8.8
1 21 8.7 23 8.5 18 8.8 26 7.8 24 8.2 25 7.8 23 7.6 20 8.8
2 21 8.7 23 8.5 18 8.8 26 7.8 23 8.2 25 7.8 23 7.6 20 8.8
3 20 8.8 23 8.5 18 8.6 26 7.8 22 7.9 25 7.6 23 7.5 20 8.8
4 20 8.9 23 8.5 18 8.8 26 7.7 22 7.7 25 7.1 23 7.6 20 8.6
5 20 8.8 23 8.5 18 8.6 26 7.7 25 6.1 23 7.5 20 8.4
6 23 8.5 20 8.4

Most recent temperature and dissolved oxygen profile plots

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