Data period: through 2017

Town County Delorme Map # True Basin Flushing Rate
T34 MD HANCOCK 34 1 0.41 flushes/yr
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
21 m
(70 ft) 		6 m
(20 ft) 		449 ha
(1,109 ac) 		27,372,206 m3
(22,191 ac-ft) 		15 km2
(5.6 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
1988 7.5 7.8 8.5 4
1989 3.9 18 3 5.5 6.7 8.0 4 2.0 2.0 2.0
1990 6.5 7.2 8.0 3
1991 7.0 7.8 9.5 3
1993 7.0 8.5 10.3 4
1994 6.3 6.6 7.6 2
1995 7.9 8.3 8.6 2
1996 6.3 6.9 7.5 3
1997 5.5 6.4 7.4 4
1998 4.8 6.1 6.9 6
1999 6.0 25 5 9 5.1 6.5 8.1 5 2.9 2.9 2.9
2000 4.4 6.0 7.3 4
2001 6.8 7.3 7.6 5
2002 5.5 6.7 8.7 7
2003 7.3 8.0 8.4 4
2004 7.5 6.2 26 6.8 5 3 5.1 6.3 7.2 5 2.3 2.3 2.3

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
7.5 5.4 23 6.8 4.3 6 4.4 7.1 10 4.1 2 2.4 2.9

Most recent late summer temperature and dissolved oxygen profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
1989-09-21
1999-08-17
2004-08-24
Depth (m) TEMP DO TEMP DO TEMP DO
0 20 9.1 23 8.6 21 8.1
1 20 9.0 23 8.6 21 8.1
2 19 9.0 23 8.6 21 8.1
3 18 9.0 23 8.6 21 8.1
4 18 9.1 23 8.6 21 8.1
5 18 9.1 22 8.6 21 8.1
6 18 9.1 22 8.6 21 8.1
7 18 9.0 22 8.6 21 8.1
8 17 8.8 22 8.6 21 8.1
9 17 8.0 21 8.0 17 5.3
10 16 6.6 18 4.4 15 3.5
11 16 6.1 16 3.6 14 2.9
12 12 4.5 15 3.0 14 2.7
13 11 3.6 14 2.5 13 2.8
14 10 3.4 13 2.4 13 2.7
15 10 3.1 13 2.2 12 2.5
16 10 2.8 13 2.1 12 2.4
17 10 2.7 13 2.1 12 2.2
18 10 2.6 13 1.2 12 2.1
19 10 2.6 12 1.8
20 10 2.4 12 1.7
21 10 2.1

Recent temperature and dissolved oxygen profile plots

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