Data period: through 2017

Town County Delorme Map # True Basin Flushing Rate
ELLIOTTSVILLE PLT PISCATAQUIS 41 1 2.32 flushes/yr
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
21 m
(68 ft) 		6 m
(21 ft) 		518 ha
(1,279 ac) 		32,907,712 m3
(26,679 ac-ft) 		83 km2
(32 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
1976 9.3 19 6 10 3.8 4.9 5.2 4 1.7 2.1 2.5
1977 5 3.8 4.9 6.0 6
1978 3.9 4.9 5.9 6
1979 4.1 4.6 6.1 5
1980 9.0 35 4 9 2.6 4.2 5.4 6 2.4 2.4 2.4
1981 8.0 25 7 11 3.7 5.1 6.3 6 0.8 2.0 3.2
1982 3.8 5.5 7.0 7
1983 1.2 4.4 6.4 7
1984 5.0 6 13 3.5 5.2 6.4 6 2.6 2.6 2.6
1985 4.3 5.1 5.8 6
1986 4.3 5.5 7.3 7
1987 6.0 27 9 8 1.9 4.9 6.4 7
1988 4.0 5.2 6.2 7
1989 3.1 5.2 6.1 6
1990 3.2 5.1 6.8 7
1991 11.0 7.4 4 4.3 5.4 6.4 7
1992 3.0 5.2 7.6 6
1993 4.2 5.7 7.5 6
1994 4.0 5.4 6.0 6
1995 4.8 6.2 7.2 6
1996 4.2 5.0 5.5 5
1997 6.0 24 7.1 6 4.4 5.8 7.9 6 2.5 2.5 2.5
1998 2.3 5.1 6.5 7
1999 4.5 5.3 6.2 5
2000 5.0 5.4 5.7 3
2001 4.8 5.5 6.8 5
2002 16 9.5 26 5 4.7 5.5 7.6 5 3.2 3.2 3.2
2003 4.8 5.6 6.3 5
2004 4.1 5.2 6.6 5
2005 3.5 5.4 7.0 6
2006 4.3 5.8 7.2 5
2007 10 5.9 20 7.0 6 4.7 5.9 7.1 5 2.7 2.7 2.7
2008 5.0 5.4 6.1 3
2009 7 10 5.8 5.8 5.8 1 2.7 2.7 2.7

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
13 7.7 25 7.1 6.1 4 10 10 1.2 5.3 7.9 5.6 0.8 2.5 3.2

Most recent late summer temperature and dissolved oxygen profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
1981-09-04
1984-09-05
1987-08-26
1991-09-09
1997-08-12
2002-08-14
2007-08-13
2009-08-20
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO
0 20.5 9.1 19.8 8.7 19.3 8.5 19.9 8.6 22.8 8.6 26.6 8.2 22.4 8.2 26 8.0
1 20.0 8.6 19.3 8.5 19.9 8.6 22.9 8.6 25.0 8.4 22.4 8.2 25 8.2
2 19.8 9.1 20.0 8.6 19.3 8.5 22.9 8.6 23.9 8.6 22.4 8.2 24 8.2
3 19.3 8.5 22.9 8.6 22.9 8.6 22.4 8.2 24 8.3
4 19.8 9.0 19.3 8.5 22.9 8.6 22.4 8.4 22.4 8.2 21 7.6
5 19.3 8.4 19.9 8.6 22.9 8.7 22.1 8.4 22.4 8.2 20 6.9
6 19.5 8.4 19.2 8.4 22.8 8.7 21.9 8.2 22.4 8.2 19 6.3
7 20.0 8.6 19.2 8.4 19.9 8.6 22.8 8.7 21.6 7.8 22.2 8.1 18 5.1
8 19.3 7.3 20.0 8.5 19.2 8.4 19.9 8.6 20.8 7.1 21.5 7.6 21.9 7.8 16 3.5
9 19.5 8.2 19.2 8.4 19.9 8.6 20.2 6.7 21.3 7.3 21.2 7.3 15 3.0
10 19.0 7.2 16.0 3.3 19.2 8.4 19.3 8.3 15.3 5.9 20.6 6.5 20.8 7.0 14 2.6
11 14.0 3.7 19.2 8.4 19.1 7.6 11.2 7.5 17.0 4.5 16.7 4.7 13 2.0
12 17.5 5.5 12.5 4.3 19.1 8.3 19.0 7.5 10.2 7.8 15.5 4.8 12.5 6.4 13 1.4
13 11.0 4.7 12.0 4.0 17.9 6.7 9.9 7.9 14.3 5.0 10.5 7.5 13 1.1
14 11.0 4.4 10.0 4.9 11.0 3.7 14.9 4.3 9.8 7.8 12.8 5.6 9.2 7.9 12 0.5
15 9.5 4.9 10.5 3.6 10.2 3.4 9.6 7.8 11.2 5.7 8.3 8.0 12 0.3
16 9.0 4.5 10.0 3.2 9.3 2.6 9.2 7.2 10.6 5.6 12 0.3
17 8.5 4.2 9.3 1.7 8.9 1.7 9.2 6.8 10.2 5.4 7.0 7.8
18 10.0 3.1 8.5 3.9 8.8 1.2 9.1 6.8 9.8 4.8
19 8.2 3.5 9.6 4.4 6.5 7.2
20 9.5 1.1 8.2 3.3 9.5 3.5
21 8.1 3.2 9.4 3.3 6.3 6.7
22 8.1 3.0
23 8.0 2.7 6.2 6.2
24 9.3 0.5 8.0 2.5 6.2 5.8

Recent temperature and dissolved oxygen profile plots

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