Data period: through 2018

Town County Delorme Map # True Basin Flushing Rate Elevation
INDUSTRY FRANKLIN 20 1 0.22 flushes/yr 561 ft
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
37 m
(120 ft) 		13 m
(44 ft) 		304 ha
(751 ac) 		40,700,000 m3
(32,996 ac-ft) 		13 km2
(5 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
1974 9.5 27 5.4 6.4 9.7 13.5 6 0.5 2.4 5.9
1975 9.5 19 5.3 7.3 9.9 12.2 8 1.0 1.4 1.9
1976 5.2 10 7.3 9.5 11.9 8 0.7 1.6 3.6
1977 4 8.5 8.5 8.5 1
1982 9.0 35 3.0 9 10.5 10.5 10.5 1 1.1 1.1 1.1
1983 6.4 8.6 10.0 6
1984 6.8 8.9 10.0 6
1985 7.0 35 5.0 4 8.9 11.1 12.3 6
1986 8.5 10.5 11.6 8
1987 6.1 8.9 10.7 7
1988 7.0 29 7.0 7 7.5 10.1 13.4 7
1989 5.8 8.7 10.4 6
1990 7.9 9.6 11.4 8
1991 16.0 39 7.2 4.0 7.4 9.6 11.5 8
1992 8.6 10.8 12.5 6
1993 9.0 10.8 12.5 8
1994 10.0 4.0 7.9 10.6 12.8 6 1.3 1.3 1.3
1995 8.0 10.1 11.4 7
1996 6.5 9.4 11.9 7
1997 8.0 10.6 14.8 7
1998 11.5 35 7.0 5.2 9.1 12.7 8 1.2 1.2 1.2
1999 6.8 9.0 10.4 7
2000 6.6 8.0 8.8 7
2001 7.4 9.4 10.3 6
2002 6.6 9.6 12.1 6
2003 2 12.0 37 3.0 8.4 10.2 12.0 8 0.8 0.8 0.8
2004 8.3 8.7 9.4 3
2005 8 9.2 38 6.9 4.0 5.5 9.4 11.2 7 1.0 1.0 1.0
2006 8.1 9.6 10.6 8
2007 7.4 9.6 11.4 6
2008 6.5 9.5 10.9 9
2009 3.0 7.5 8.8 10.4 8
2010 4.0 8.0 9.6 11.0 9
2011 7.9 10.5 11.2 5
2012 8.3 10.2 12.2 11
2013 8.7 9.7 10.4 9
2014 9.3 9.8 10.7 10
2015 3 11.5 32 6.8 2.5 5 8.6 9.5 10.6 9 1.1 1.5 1.9
2016 10.0 11.1 12.2 11
2017 4.0 9.3 10.3 11.5 11
2018 6.3 9.8 11.2 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
4.3 10 33 6.9 4.5 4.3 6.6 5.2 9.7 15 7.1 0.5 1.4 5.9

Temperature and Dissolved Oxygen Profiles

Late summer only; limited to eight most recent profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
1988-09-01
1991-08-22
1994-08-22
1998-08-13
2003-08-18
2005-08-12
2015-08-10
2015-08-18
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO
0 19.0 9.1 21.0 9.0 21.8 9.0 24.3 8.3 24.5 8.4 25.5 8.4 24.3 8.5 26.2 7.7
1 21.9 9.0 21.8 8.9 24.2 8.3 24.4 8.4 25.5 8.4 24.2 8.5 25.3 8.0
2 18.9 9.2 20.9 9.0 21.8 8.9 24.3 8.3 24.3 8.5 25.3 8.4 23.8 8.5 25.1 8.0
3 20.8 9.0 21.8 8.9 24.1 8.3 24.1 8.5 25.2 8.4 23.6 8.5 24.6 8.2
4 18.8 9.2 20.8 9.0 21.8 8.9 24.0 8.3 24.1 8.5 25.1 8.4 23.5 8.5 24.0 8.2
5 20.8 9.0 21.8 8.9 24.0 8.4 24.0 8.5 22.0 10.8 23.4 8.5 23.8 8.1
6 18.8 9.2 20.6 9.0 21.8 8.9 20.2 9.8 23.0 9.4 20.2 12.2 23.3 8.5 23.4 8.4
7 20.0 9.0 21.8 9.0 19.0 10.4 20.8 10.6 14.1 12.7 21.9 9.5 22.2 8.6
8 18.5 9.1 19.0 9.8 16.9 12.5 15.0 10.4 16.3 12.5 12.8 12.7 17.4 11.3 18.9 11.1
9 15.0 11.6 17.8 10.6 13.9 12.7 12.5 10.6 12.9 13.2 11.0 12.4 13.2 11.9 14.9 11.9
10 12.0 12.0 14.0 12.0 11.8 12.8 10.6 10.8 11.1 13.5 10.0 12.3 11.7 12.1 12.0 12.2
11 10.9 12.4 10.5 12.6 9.5 11.2 9.9 13.3 8.9 11.9 10.2 12.2 10.6 11.9
12 8.8 12.2 9.0 12.2 9.9 12.5 8.7 11.2 8.9 13.2 8.8 11.7 9.0 12.0 9.6 11.9
13 9.1 12.2 8.1 10.8 8.2 13.0 8.0 11.0 8.3 11.7 8.3 11.6
14 7.2 12.2 8.8 11.9 7.6 10.4 7.7 12.6 7.6 10.4 7.6 11.6 7.8 11.6
15 7.2 11.6 8.3 11.2 7.3 9.6 7.3 12.2 7.0 10.2 7.3 11.4 7.3 11.3
16 6.2 11.0 7.1 9.5 7.0 10.0
17 7.0 9.0 6.6 11.6 6.7 11.0 6.7 10.8
18 5.9 10.9 7.0 9.0
19 6.8 8.4 6.3 10.7 6.4 10.4 6.4 10.3
20 5.5 10.2 6.1 9.6 7.2 9.7 6.8 8.3 6.2 9.2
21 6.8 8.4 6.1 10.4 6.0 9.9 6.1 9.8
22
23 6.0 9.8 5.8 9.5 6.0 9.6
24 6.5 8.4
25 5.0 9.1 5.9 8.9 7.0 8.8 5.9 9.5 6.0 8.8 5.8 9.2 5.8 9.3
26 6.4 7.8
27 6.5 7.8 5.9 9.3
28
29 6.5 7.7 5.9 9.1
30 5.0 8.4 5.9 8.4 6.9 8.3 5.8 9.0 6.0 8.5 5.7 8.8 5.6 9.0
31
32
33
34
35 5.0 7.9 6.9 7.9 5.8 8.0 6.0 7.7 5.6 8.4 5.5 8.6
36
37
38
39
40 6.9 7.1 5.5 7.9

Most recent temperature and dissolved oxygen profile plots

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