Data period: through 2017

Town County Delorme Map # True Basin Flushing Rate
SANFORD YORK 2 1 50.71 flushes/yr
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
9 m
(30 ft)
3 m
(9 ft)
77 ha
(190 ac)
1,354,254 m3
(1,098 ac-ft)
63 km2
(24 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
1977 7 1.4 1.4 1.4 1 32.6 32.6 32.6
1978 13.4 85 0.5 1.4 2.1 6 3.5 23.7 45.3
1979 12.0 71 0.5 1.3 3.0 8 2.8 27.5 102.4
1980 10.2 73 0.5 1.4 3.2 8 6.3 6.3 6.3
1982 12.8 58 1.4 2.3 2.8 7 3.7 8.4 15.8
1983 9.5 39 2.0 2.7 3.8 6 4.2 10.2 15.7
1984 13.3 42 1.8 2.4 3.0 6 3.0 9.4 16.1
1985 58 2.3 3.1 3.8 5 3.2 5.8 7.1
1990 1.7 2.5 3.2 3
1992 1.7 2.0 2.5 3
1994 1.9 2.0 2.1 3
1995 2.0 2.5 3.5 5
1996 2.5 3.3 3.5 5
1997 2.1 3.2 3.9 6
1998 1.4 2.5 3.2 5
1999 2.2 3.0 3.8 5
2000 2.5 3.2 3.5 5
2001 1.8 2.7 3.4 4
2002 2.4 2.8 3.7 5
2003 2.8 3.2 3.8 4
2005 2.3 3.2 4.2 4 1
2006 2.5 3.1 4.5 6
2007 23 12.9 82 7.3 8 2.4 3.2 4.8 5
2008 2.2 2.8 3.4 3
2009 1.9 2.8 3.5 6
2010 2.8 3.2 3.5 5
2011 31 15.4 123 7.3 13 2.3 3.2 3.8 6
2012 2.4 3.4 4.2 8
2013 2.4 3.1 4.2 8
2014 2.8 3.3 3.8 8
2015 2.5 3.8 5.0 7
2016 28 16.0 148 7.1 18 28 3.0 4.1 4.8 8 3.7 3.7 3.7
2017 2.5 3.5 4.4 7

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
27 13 78 7.2 12 10 28 0.5 2.8 5 5.5 2.8 14 102

Most recent late summer temperature and dissolved oxygen profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
1985-09-11
1997-08-22
2016-08-25
2017-08-14
2017-08-25
2017-09-02
2017-09-15
2017-09-28
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO
0 20 10.3 22 8.0 26 7.9 25 7.3 24 7.3 20 7.1 23 7.9 24 7.8
1 19 10.2 22 8.1 26 7.8 24 7.2 24 7.3 20 7.0 22 7.9 23 7.8
2 19 10.0 22 8.1 25 7.4 24 6.9 24 7.1 20 6.9 20 7.1 23 7.3
3 19 9.5 21 7.9 24 7.1 24 5.6 23 5.5 20 6.9 20 6.4 21 6.2
4 18 8.0 20 7.7 24 6.6 23 4.2 22 5.0 20 6.9 19 6.0 20 4.0
5 18 7.6 20 7.1 23 5.8 22 2.0 21 4.2 20 7.1 19 5.6 19 2.2
6 18 6.6 22 0.6 21 0.0 21 3.2 19 7.1 18 5.1 19 0.0
7 19 0.4 17 0.0 18 0.0 19 7.0 18 2.4 18 0.0

Recent temperature and dissolved oxygen profile plots

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