Data period: through 2018

Town County Delorme Map # True Basin Flushing Rate Elevation
BELGRADE KENNEBEC 12 1 1.59 flushes/yr 234 ft
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
34 m
(113 ft) 		10 m
(31 ft) 		1,418 ha
(3,505 ac) 		136,209,103 m3
(110,427 ac-ft) 		119 km2
(46 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 2018 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
1991 10 5.0 5.6 6.5 6
1992 5.5 6.3 7.2 1
1993 5.2 5.6 6.0 2
1994 5.0 5.5 6.0 2
1995 4.9 5.7 6.3 3
1996 8
1997 5.4 5.4 5.4 1
1998 4.8 4.8 4.8 1
1999 5.8 5.8 5.8 1
2000 5.4 6.0 6.5 3
2001 4.7 5.5 6.5 5
2002 4.8 5.8 6.6 4
2005 4.2 4.2 4.3 1

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
9.1 4.2 5.5 7.2 2.5 Inf 1

Temperature and Dissolved Oxygen Profiles

Late summer only; limited to eight most recent profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
1991-08-08
1992-08-07
1992-08-24
1993-08-08
1994-08-09
1994-08-31
1995-08-13
1995-09-02
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO
0 25 8.1 24 8.5 23 8.3 25 7.8 24 8.0 22 7.6 25 8.4 17
1 25 8.1 24 8.5 23 8.3 25 7.5 22 8.0 22 7.8 25 8.6 20 7.9
2 24 8.2 23 8.5 22 8.3 25 8.0 24 8.0 22 7.9 25 8.6 20 7.9
3 24 8.1 23 8.5 22 8.4 25 8.0 24 7.9 22 7.8 25 8.6 20 7.9
4 23 8.0 22 8.3 22 8.3 24 8.0 24 7.8 22 7.8 23 7.2 20 7.9
5 23 7.7 22 8.1 22 8.3 24 7.9 24 7.0 22 7.8 22 7.2 20 7.9
6 23 7.2 22 8.1 22 8.1 22 7.2 23 6.3 22 7.8 21 5.8 19 7.5
7 22 5.4 22 7.9 21 7.4 22 6.5 23 5.5 22 7.8 19 4.0 19 7.1
8 21 3.9 21 7.3 21 7.1 20 4.9 22 5.3 22 7.8 18 3.2 18 6.5
9 18 1.6 21 5.8 20 4.1 19 2.7 21 2.0 21 7.5 15 2.2 17 2.8
10 16 0.2 16 0.4 16 0.4 16 0.4 18 0.6 20 2.8 12 0.5 13 0.3
11 13 0.1 14 0.2 14 0.1 12 0.2 15 0.1 16 0.3 10 0.2 11 0.0
12 12 0.1 11 0.2 12 0.1 11 0.2 13 0.1 13 0.1 9 0.2
13 11 0.1 10 0.1 12 0.1 10 0.2 11 0.0 12 0.1
14 10 0.1 11 0.1 10 0.2 11 0.1

Most recent temperature and dissolved oxygen profile plots

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