Data period: through 2018

Town County Delorme Map # True Basin Flushing Rate Elevation
MEDDYBEMPS WASHINGTON 36 1 0.6 flushes/yr 170 ft
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
12 m
(38 ft) 		4 m
(14 ft) 		2,717 ha
(6,713 ac) 		117,543,614 m3
(95,294 ac-ft) 		70 km2
(27 mi2)

Secchi Disk Transparency Graphs

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

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
1980 3.5 3.5 3.5 1 3.5 3.5 3.5
1986 3.7 4.7 5.7 6
1987 5.0 35 7 4.0 4.8 6.1 6
1988 4.0 4.6 5.7 7
1989 3.7 4.5 5.0 7
1990 3.1 4.5 5.3 7
1991 7.0 39 7.2 4.0 4.8 5.3 8
1992 4.0 4.8 5.4 7
1993 3.4 4.8 5.5 6
1994 3.8 4.6 7.2 7
1995 4.7 6.0 7.2 6
1996 4.4 4.8 5.5 7
1997 4.0 5.1 7.9 6
1998 4.9 5.5 6.5 6
1999 4.8 5.6 7.3 6
2000 4.2 5.4 6.5 7
2001 5.3 6.7 8.6 6
2002 6.0 6.5 7.4 6
2003 5.0 5.4 6.1 8
2004 4.7 5.5 6.2 8
2005 4.8 5.2 5.7 9
2006 4.2 4.8 5.8 7
2007 5.0 5.6 7.8 8
2008 24 4.8 33 6.8 7 4.9 5.6 10.4 7
2009 4.0 5.1 5.9 6
2010 5.5 6.0 6.5 4
2011 4.0 5.4 7.1 7
2012 4.5 5.3 6.5 7
2013 40 5.1 29 6.8 9 3.0 4.9 5.8 9 1 4.6 4.6 4.6
2014 3.8 5.0 5.8 7
2015 4.2 5.3 6.2 7
2016 5.0 5.8 6.8 7
2017 3.7 5.2 6.7 6
2018 3.2 5.2 6.4 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
32 5.5 34 6.9 8 7 3 5.2 10 6.6 3.5 4 4.6

Temperature and Dissolved Oxygen Profiles

Late summer only; limited to eight most recent profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
1987-08-20
1991-09-05
2013-08-27
2015-08-14
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO
0 24 8.4 20 9.0 24 8.1 23 7.8
1 20 8.9 23 8.1 23 7.9
2 23 8.3 19 8.9 22 8.1 22 7.9
3 19 8.8 22 8.0 22 7.8
4 23 8.3 19 8.8 22 7.7
5 23 8.0 19 8.8 22 7.7
6 21 7.5 19 8.8 22 7.6
7 21 7.2 19 8.8 22 7.4
8 21 6.8 19 8.8
9 20 6.8 19 8.6
10 19 8.5

Most recent temperature and dissolved oxygen profile plots

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