Data period: through 2018

Town County Delorme Map # True Basin Flushing Rate Elevation
ACTON YORK 2 2 17.92 flushes/yr 481 ft
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
30 m
(98 ft) 		7 m
(22 ft) 		89 ha
(220 ac) 		2,232,724 m3
(1,810 ac-ft) 		23 km2
(9 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
1992 16.0 51 7.1 9.8 11 3.5 3.8 4.3 4 3.3 4.5 6.5
1997 9.9 50 6.9 6.0 12 5.3 6.0 6.6 1 3.3 3.3 3.3
1999 6 4.4 4.6 4.8 1
2000 11.6 55 7.9 12 5.1 5.7 6.4 5 2.9 3.3 3.7
2001 10.0 8.9 4.2 5.6 6.8 7 2.1 3.4 6.0
2002 14 13.0 67 8.3 12 7.8 4.7 5.5 7.0 6 2.6 6.1 9.6
2003 9 11.0 66 5.0 13 6.2 6.2 6.2 1 3.2 3.2 3.2
2004 26 11.0 67 7.0 9.0 12 5.4 5.5 5.5 1 4.1 4.1 4.1
2006 5.0 6.3 6.8 4
2007 4.9 5.7 7.4 3
2008 4.4 5.2 5.9 4
2009 8 4.9 5.6 6.3 4
2010 5 6.6 6.6 6.7 2
2011 5.4 5.6 6.1 4
2012 5.0 5.2 5.4 4
2013 5.5 5.8 6.0 3
2014 6.0 6.4 6.8 2
2015 7.0 7.0 7.1 2
2016 7.0 7.0 7.0 1
2017 6.5 6.5 6.5 1
2018 5.1 5.5 6.0 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
16 12 59 7 8 6.3 12 8.3 3.5 5.8 7.4 3 2.1 4 9.6

Temperature and Dissolved Oxygen Profiles

Late summer only; limited to eight most recent profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
2012-09-06
2013-08-20
2013-09-12
2014-08-25
2015-08-11
2016-08-25
2017-08-24
2018-08-20
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO
0 24 8.9 25.9 9.5 21.6 9.9 24.4 10.7 24.7 8.0 25.3 8.0 24.6 7.5 25.5 8.5
1 24 8.8 25.9 9.3 21.4 9.9 23.5 11.3 24.7 8.0 25.3 7.9 24.6 7.5 25.5 8.5
2 23 8.8 25.7 9.3 21.4 9.9 22.8 11.4 24.6 8.0 25.2 7.8 24.5 7.4 25.4 8.5
3 23 8.3 25.6 9.0 21.4 9.7 22.4 11.3 24.4 7.4 25.0 7.8 24.4 7.1 25.2 8.2
4 23 8.6 25.4 8.0 21.0 9.8 21.9 11.0 23.8 7.2 24.5 7.7 23.3 7.1 25.0 8.1
5 22 8.3 24.1 7.9 21.1 8.3 21.5 9.9 18.5 6.9 24.2 7.5 22.6 4.6 21.1 4.3
6 20 3.0 21.1 7.9 19.9 7.0 17.5 3.3 12.0 2.3 23.8 6.5 19.2 2.5 15.1 5.7
7 15 2.8 15.9 7.7 18.5 5.5 12.6 1.0 9.4 1.9 11.7 2.9 10.9 0.5 10.8 2.9
8 12 2.5 11.9 3.0 14.4 1.9 10.5 0.9 7.8 1.5 9.8 1.9 9.1 0.2 8.8 1.0
9 11 2.5 9.9 1.2 10.3 0.5 9.2 0.9 7.8 0.5 9.7 0.9 7.5 0.2 7.7 0.8
10 11 2.5 9.4 0.5 7.9 0.5 8.7 0.8 7.7 0.5 7.8 0.1 7.8 0.1
11 12 1.9 7.7 0.1 7.3 0.5 8.5 0.8 7.4 0.6 7.8 0.1
12 12 1.9 7.7 0.1 7.7 0.5 8.7 0.4 7.4 0.5
13 12 1.3 7.7 0.1 7.7 0.2 8.8 0.4 7.4 0.5
14 12 1.2 7.7 0.1 8.8 0.1
15 12 1.2 7.7 0.1 8.8 0.1
16 12 0.9 8.8 0.1
17 12 0.8

Most recent temperature and dissolved oxygen profile plots

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