Data period: through 2017

Town County Delorme Map # True Basin Flushing Rate
ENFIELD PENOBSCOT 33 1 0.23 flushes/yr
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
32 m
(104 ft) 		12 m
(40 ft) 		1,184 ha
(2,927 ac) 		162,851,767 m3
(132,026 ac-ft) 		19 km2
(7.4 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
1970 7.9 8.1 8.5 3
1971 5.0 6.7 9.2 13.1 4
1972 3.3 5.8 8.3 9.4 4
1973 12.8 12.8 12.8 1
1978 30.0 7.8 9.8 12.2 3
1979 7.0 24 4.0 5.0 8.5 9.8 10.0 5 1.3 1.3 1.3
1981 6.0 38 16.0 6.0 8.1 8.1 8.1 1 1.5 1.5 1.5
1983 8.8 9.2 9.4 2
1984 4.0 4.0 11.0 7.6 8.7 10.0 5 1 1.5 1.5 1.5
1985 9.4 10.6 11.8 5
1986 9.7 10.7 11.6 5
1987 4.0 30 3.0 5.0 9.8 11.1 13.1 4
1988 9.8 11.3 12.5 6
1989 8.8 9.6 10.9 6
1990 8.8 10.3 11.5 3
1991 10.0 27 6.9 5.0 10.7 11.1 11.5 2
1995 7.0 3.0 13.7 13.7 13.7 1
1996 5.8 31 6.8 4.9 8.2 9.7 11.2 6 1.1 1.5 2.0
1997 4.0 31 6.9 3.5 9.8 7.1 10.6 12.6 6 1.4 1.8 2.1
1998 5.0 34 6.6 7.3 9.8 6.6 9.7 11.7 8 0.4 1.2 2.2
1999 5.0 30 6.7 2.8 4.5 8.9 11.3 13.1 6 0.8 1.6 2.8
2000 8.2 9.8 11.3 5
2001 10.6 11.1 12.4 5
2002 2.2 33 6.5 6.0 2.0 7.7 9.2 12.1 14.5 4 0.7 1.4 2.5
2003 2.2 35 6.6 3.3 8.0 8.8 10.3 11.8 4 1.0 1.1 1.3
2004 1.2 33 6.1 4.5 13.5 8.7 11.6 12.9 4 1.0 1.4 1.6
2005 8.2 10.3 11.9 6
2006 7.3 9.3 11.1 5
2007 9.0 10.7 11.7 4
2008 9 5.5 29 6.9 8.0 8.2 9.9 11.8 7 3.4 3.4 3.4
2015 2.5 10.6 11.8 12.7 2
2016 7 7.5 27 7.1 3.0 3.0 8.9 10.3 12.5 6 1.1 1.1 1.1
2017 2.2 10.5 11.8 13.0 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
8 5.1 31 6.6 5.2 6.9 8 5.8 10 14 4.4 0.4 1.6 3.4

Most recent late summer temperature and dissolved oxygen profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
1999-09-24
2002-08-27
2003-08-13
2003-09-25
2004-08-11
2004-09-28
2008-08-11
2016-08-09
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO
0 18.1 8.2 23 8.2 24.1 8.2 19.2 8.8 23 8.8 18 9.1 21.9 9.0 24.3 8.6
1 18.1 8.2 23 8.2 24.0 8.2 19.2 8.8 23 8.7 18 9.1 21.8 9.0 24.3 8.6
2 18.1 8.3 23 8.2 24.0 8.2 19.2 8.8 23 8.5 18 9.1 21.7 8.9 24.0 8.6
3 18.0 8.4 23 8.2 24.0 8.2 19.2 8.9 23 8.6 18 9.2 21.6 9.0 24.0 8.6
4 18.0 8.5 23 8.2 23.0 8.3 19.2 8.9 23 8.6 18 9.2 21.5 9.0 24.0 8.6
5 18.0 8.5 23 8.2 23.0 8.4 19.2 8.9 23 8.6 18 9.2 21.4 9.0 23.5 8.6
6 18.0 8.6 23 8.2 22.9 8.4 19.2 8.9 22 8.6 18 9.2 21.3 9.0 23.4 8.5
7 18.0 8.6 23 8.2 21.6 8.4 19.2 9.0 22 8.5 18 9.2 21.2 8.9 23.1 8.5
8 18.0 8.6 23 8.2 18.1 9.6 19.0 9.0 20 8.6 18 9.2 18.4 10.2 21.6 8.6
9 18.0 8.7 21 8.5 14.2 10.5 17.1 9.1 19 8.8 18 9.2 14.7 10.4 17.5 9.1
10 18.0 8.7 18 8.8 11.6 10.5 13.3 10.0 17 8.8 18 8.8 13.0 10.1 14.8 9.1
11 18.0 8.7 16 9.0 9.8 10.2 11.6 10.0 15 8.8 17 8.4 12.0 10.1 13.1 9.2
12 15.3 8.4 14 9.0 9.1 10.0 10.7 9.6 14 8.5 16 7.9 11.1 10.0 12.2 9.3
13 12.5 8.4 13 8.5 8.9 9.8 9.7 9.4 13 8.3 16 7.9 10.4 9.9 11.1 9.3
14 11.2 8.0 12 8.3 8.5 9.6 9.5 8.9 12 8.2 13 6.8 9.9 9.8 10.5 9.1
15 10.2 7.6 12 7.6 8.2 9.6 9.1 8.9 11 8.0 12 6.7 9.6 9.7 10.3 9.0
16
17 9.3 9.5 9.9 8.9
18
19 9.0 9.6 9.7 8.8
20 9.1 6.5 11 7.3 8.0 9.3 8.3 8.3 11 7.8 11 5.7
21 9.0 9.5 9.6 8.7
22
23 8.9 9.4 9.5 8.7
24
25 9.0 5.9 11 6.7 7.9 9.2 8.2 8.0 11 7.7 11 5.5 8.8 9.3 9.5 8.6
26
27
28
29
30 9.0 5.8 11 6.6 7.8 8.8 8.0 8.0 11 7.6 11 5.4 8.7 8.7 9.3 6.5

Recent temperature and dissolved oxygen profile plots

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