Data period: through 2017

Town County Delorme Map # True Basin Flushing Rate
ENFIELD PENOBSCOT 33 2 1.19 flushes/yr
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
32 m
(104 ft) 		12 m
(40 ft) 		282 ha
(697 ac) 		16,860,849 m3
(13,669 ac-ft) 		22 km2
(8.7 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
1972 5.3 4.9 5.7 6.1 3
1973 4.6 4.6 4.6 1
1978 7.0 8.0 9.0 2
1979 7.0 7.5 8.0 3
1987 3.5 29 4.0 12.0 7.8 7.8 7.8 1
1991 12.0 27 6.9 4.0 7.0 7.2 7.3 7.5 2
1995 9.0 4.0 8.0 8.6 8.6 8.6 1
1996 4.5 31 6.3 7.3 8.3 4.6 5.8 7.5 5 2.0 2.3 2.8
1997 11.5 32 6.2 5.8 9.2 5.3 6.7 8.8 7 1.1 2.1 2.9
1998 4.6 33 6.2 8.2 10.8 5.6 6.7 8.4 7 1.1 1.8 2.5
1999 5.2 31 6.6 7.0 25.9 5.5 7.1 8.2 6 1.1 1.9 2.8
2000 4.9 5.7 7.2 5
2001 5.8 6.5 7.2 5
2002 2.0 34 6.4 6.8 11.3 5.2 6.6 7.9 5 1.6 2.1 2.4
2003 2.2 39 6.2 5.3 15.0 5.6 6.7 8.0 5 1.2 1.9 2.4
2004 1.2 35 6.2 5.3 10.3 5.1 5.7 6.5 4 2.2 2.6 3.4
2005 4.7 5.7 6.8 5
2006 4.6 5.2 6.2 5
2007 5.5 5.9 6.4 4
2008 17 5.7 28 6.9 3.0 5.3 5.6 6.2 7 2.3 2.3 2.3
2010 6.0 9.5 7.6 7.6 7.6 1 2.2 2.2 2.2
2011 6.0 7.6 7.6 7.6 1 2.4 2.4 2.4
2015 4.0
2016 12 8.0 27 7.0 5.0 4.3 7.2 8.0 8.6 4 1.4 1.4 1.4
2017 3.8 6.9 7.8 8.3 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
14 5.8 31 6.4 5.6 4.4 12 4.6 6.7 9 4 1.1 2.1 3.4

Most recent late summer temperature and dissolved oxygen profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
2003-08-13
2003-09-25
2004-08-11
2004-09-28
2008-08-11
2010-08-24
2011-08-17
2016-08-09
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO
0 25 8.0 20 8.6 23 8.7 18 9.1 22 9.0 22 7.9 24 7.9 24 8.4
1 25 8.0 20 8.6 23 8.6 18 9.0 22 8.9 22 7.8 23 7.9 24 8.4
2 25 8.0 20 8.6 23 8.4 18 8.9 22 8.9 22 7.8 23 7.9 24 8.4
3 24 8.1 20 8.6 23 8.3 18 8.9 21 8.9 22 7.8 22 7.9 24 8.4
4 23 8.0 20 8.5 23 8.3 18 8.9 21 8.8 22 7.8 22 7.9 24 8.4
5 22 7.3 20 8.4 22 8.2 18 8.9 21 8.6 22 7.8 22 7.8 24 8.4
6 19 6.3 19 8.2 21 7.2 18 8.8 19 6.9 22 7.8 20 5.4 22 7.5
7 15 5.5 17 6.3 18 6.0 18 8.7 16 4.9 19 3.7 17 3.2 17 5.7
8 12 5.3 15 3.0 16 4.6 18 8.6 13 4.4 16 2.0 15 3.3 16 5.3
9 12 5.1 12 1.4 15 4.3 17 8.5 12 4.9 14 1.5 14 2.8 14 4.8
10 11 4.4 12 1.1 14 3.6 17 7.4 12 4.6 13 1.2 13 3.0 13 4.5
11 11 4.4 11 1.8 14 3.6 16 7.3 12 4.6 13 1.3 13 3.0 12 4.4
12 10 4.3 11 1.7 14 3.3 14 0.8 11 4.4 13 1.2 12 2.8 12 4.3
13 10 4.2 11 1.7 13 3.2 13 0.6 11 4.1 12 1.0 12 2.6 12 4.2
14 10 4.2 10 1.6 13 3.2 13 0.4 11 3.8 12 0.8 12 2.5 12 4.1
15 10 4.2 10 1.6 13 3.1 13 0.3 11 3.5 12 0.6 12 2.5 12 3.8
16 10 4.1 10 1.5 13 3.0 13 0.2 11 3.3 12 2.3
17 10 4.0 10 1.5 13 2.9 13 0.2 12 3.5
18 13 2.0

Recent temperature and dissolved oxygen profile plots

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