Data period: through 2017

Town County Delorme Map # True Basin Flushing Rate
SANGERVILLE PISCATAQUIS 32 1 1.77 flushes/yr
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
6 m
(19 ft) 		3 m
(10 ft) 		135 ha
(333 ac) 		4,053,248 m3
(3,286 ac-ft) 		11 km2
(4.4 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
1991 31 75 7.3 13 4.4 4.7 5.0 5
1992 4.4 4.9 5.4 6
1993 4.3 4.7 5.5 5
1994 19 9 4.0 4.9 5.6 6 3.2 3.2 3.2
1995 3.7 4.9 5.7 6
1996 3.6 4.3 4.8 6
1997 4.1 4.8 5.6 6
1998 4.2 4.9 5.9 7
1999 24 7.4 8 4.5 5.3 5.8 6 2 1.2 1.8 2.4
2000 3.7 4.5 5.8 6
2001 4.0 4.7 5.4 6
2002 3.9 4.8 5.6 5
2003 3.5 4.6 6.0 6 1
2004 13 26 66 7.7 11 3.8 4.6 5.1 6 9.2 9.2 9.2
2005 22 56 7.3 12 4.0 4.7 5.6 6 1 2.7 7.2 11.6
2006 4.0 4.6 5.6 5
2007 4.3 4.8 5.5 4
2008 3.7 4.9 5.8 5
2009 8 4.3 5.0 5.6 4
2010 10 4.2 4.7 5.3 5 3.8 3.8 3.8
2011 3.9 4.2 4.9 4
2012 4.4 5.0 5.6 3
2013 4.6 5.2 5.8 4
2014 4.0 4.2 4.5 2
2015 10 28 61 7.4 10 3.2 4.2 5.2 4 2.5 2.5 2.5
2016 4.5 4.8 5.1 3
2017 4.0 5.0 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
12 25 64 7.4 10 8 3.2 4.7 6 4.9 1.2 4.6 12

Most recent late summer temperature and dissolved oxygen profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
1991-08-21
1994-08-16
1999-08-13
2004-08-26
2005-08-19
2010-08-30
2015-08-13
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO
0 20 7.8 22 8.3 22 8.6 22 8.3 25 8.7 22 8.3 24 8.3
1 20 7.9 22 8.2 22 8.7 22 8.3 23 9.0 24 8.4 24 8.3
2 20 7.9 22 8.2 22 8.6 22 8.3 23 9.1 24 8.5 24 8.2
3 20 7.9 22 8.2 22 8.5 22 8.2 23 9.1 24 8.5 23 7.9
4 20 7.9 22 8.2 21 8.4 22 8.2 23 9.5 23 8.3 23 7.6
5 20 7.8 21 8.2 21 8.3 21 7.8 23 9.9 23 7.8 23 7.5
6 22 6.5

Recent temperature and dissolved oxygen profile plots

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