Data period: through 2017

Town County Delorme Map # True Basin Flushing Rate
T40 MD HANCOCK 34 1 1.16 flushes/yr
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
17 m
(56 ft)
4 m
(14 ft)
789 ha
(1,949 ac)
41,268,425 m3
(33,457 ac-ft)
48 km2
(19 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
1989 3.7 15 8 4.0 4.0 4.0 1 3.2 3.2 3.2
1990 21 6.2 3.0 3.0 3.0 1 1.9 2.0 2.1
1996 9.0 23 8 8 4.3 4.3 4.3 1 2.2 2.2 2.2
1997 3.5 3.9 4.5 5
1998 4.1 4.4 5.0 3
1999 4.0 4.8 5.3 3
2000 3.8 4.3 4.6 3
2001 3.5 25 6.8 6 8 4.3 4.3 4.3 1 4.4 4.4 4.4
2002 4.5 4.6 4.8 2
2003 3.9 4.0 4.0 2
2004 4.0 4.4 4.7 2
2006 54 4.0 19 6.5 7 4.0 4.0 4.0 1 3.5 3.5 3.5
2010 8 4.7 4.7 4.7 1 2.8 2.8 2.8

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
54 5 21 6.5 7.4 8 3 4.2 5.3 2 1.9 3 4.4

Most recent late summer temperature and dissolved oxygen profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
1989-09-21
1990-08-23
1996-08-15
2001-08-15
2006-08-22
2010-08-25
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO
0 20 8.9 22 8.1 25 8.1 22 8.6 22 8.3
1 19 8.7 22 7.9 22 8.1 24 8.1 22 8.6 22 8.3
2 18 8.8 22 7.9 22 8.0 24 8.1 22 8.6 22 8.3
3 18 8.7 22 8.1 22 8.0 23 8.0 22 8.5 22 8.3
4 18 8.7 22 8.2 22 8.0 23 7.9 22 8.5 22 8.3
5 18 8.6 21 8.1 21 7.1 22 5.4 21 8.5 22 8.3
6 18 8.5 21 8.2 20 6.1 20 4.6 21 8.5 22 8.3
7 18 8.3 21 8.0 19 5.6 18 3.7 21 7.8 22 8.3
8 18 8.2 20 4.5 19 5.4 16 2.8 21 7.3 22 8.2
9 17 8.2 19 4.1 19 4.9 15 2.2 20 6.8 22 8.0
10 17 8.0 19 3.9 18 4.6 14 1.9 19 4.0 22 8.0
11 17 7.9 18 3.0 18 3.9 13 1.7 16 0.5 21 7.8
12 17 4.6 17 1.9 13 1.6 21 7.7
13 13 0.5 16 1.0 13 1.5 19 0.4
14 16 1.0 12 1.3

Recent temperature and dissolved oxygen profile plots

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