Data period: through 2017

Town County Delorme Map # True Basin Flushing Rate
ACTON YORK 2 1 8.2 flushes/yr
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
9 m
(31 ft) 		5 m
(15 ft) 		81 ha
(200 ac) 		3,714,490 m3
(3,011 ac-ft) 		3 km2
(1.3 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
2003 6.8 7.1 7.5 4
2004 6 10.0 68 7.2 8.5 6.5 7.5 8.8 6 3.6 3.6 3.6
2005 6.4 7.0 7.8 6
2006 6.2 7.1 8.1 6
2007 5.3 6.5 6.8 4
2008 10 7.7 61 7.0 4 6.3 6.3 6.3 1
2009 5.0 7.0 7.2 7.7 5 2 2.6 2.6 2.6
2010 7.0 11 6.0 6.7 7.2 6 1 2.8 2.8 2.8
2011 6.5 7.0 7.3 4

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
8 8.8 64 7.1 6.8 4 11 5.3 6.9 8.8 4.7 2.6 3 3.6

Most recent late summer temperature and dissolved oxygen profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
2004-08-17
2009-08-12
2010-08-18
Depth (m) TEMP DO TEMP DO TEMP DO
0 23 8.0 25 8.2 25 8.4
1 23 8.0 25 8.2 25 8.4
2 23 8.0 24 8.2 25 8.3
3 23 8.0 24 8.2 24 8.4
4 23 7.9 24 8.1 24 8.3
5 23 7.8 23 7.8 24 8.2
6 22 7.4 20 5.4 24 7.9
7 20 2.2 19 2.9 21 2.5
8 17 0.3 17 1.6 18 0.4
9 15 0.2 17 0.3

Recent temperature and dissolved oxygen profile plots

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