Data period: through 2018

Town County Delorme Map # True Basin Flushing Rate Elevation
MANCHESTER KENNEBEC 12 1 0.81 flushes/yr 250 ft
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
11 m
(35 ft) 		2 m
(8 ft) 		6 ha
(15 ac) 		150,069 m3
(122 ac-ft) 		0 km2
(0.1 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
1977 4.0 26 11 8.5 55 1.8 1.8 1.8 1 6.1 21.4 36.7
1978 10.3 46 21 53 2.3 2.4 2.5 2 13.6 13.6 13.6
1979 5.5 37 27 2.3 2.9 3.6 9 5.9 12.1 26.7
1980 4.9 26 21 35 2.7 3.9 5.2 8 4.2 10.0 20.6
1981 17 27 2.0 3.1 5.5 5 12.5 16.0 19.5
1982 2.3 2.9 4.0 5
1983 2.5 2.7 3.2 6
1984 5.5 19 56 3.5 3.5 3.5 1 11.5 11.6 11.8
1998 5.0 24 14 17 4.9 5.1 5.3 1 3.9 3.9 3.9
1999 3.0 26 10 24 5.3 5.5 5.8 1 3.6 3.6 3.6
2002 7 5.0 24 9 43 5.9 6.0 6.1 1 4.6 4.6 4.6

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
7 5.4 30 15 8.5 41 30 1.8 3.6 6.1 3.6 3.6 11 37

Temperature and Dissolved Oxygen Profiles

Late summer only; limited to eight most recent profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
1979-08-28
1979-09-13
1980-08-21
1981-08-21
1984-08-13
1998-08-14
1999-08-20
2002-08-19
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO
0 22.0 9.1 19.5 8.6 21.0 7.8 21.9 8.7 24.6 7.5 25.0 8.1 24.0 8.4 28.0 7.8
1 21.0 9.2 18.5 8.5 21.0 7.6 21.9 8.7 24.3 7.2 24.4 8.1 24.0 8.2 27.4 7.7
2 20.5 8.8 18.0 8.5 21.0 7.5 21.9 9.6 24.0 8.1 22.8 8.4 27.0 7.8
3 19.0 9.2 18.0 8.3 21.0 7.4 21.8 8.4 21.1 4.0 24.0 8.0 22.5 8.3 26.6 7.6
4 17.0 5.7 16.5 3.2 21.0 7.3 20.9 7.3 15.9 2.8 23.6 7.8 22.2 8.0 25.4 7.7
5 12.3 5.0 12.7 1.1 18.0 0.5 16.8 4.3 12.5 1.0 19.7 9.0 20.1 3.7 22.7 4.9
6 8.2 0.2 8.5 0.2 12.0 0.4 11.9 0.3 9.8 1.0 14.8 3.2 15.0 1.4 18.1 2.4
7 6.0 0.2 6.4 0.1 8.5 0.2 8.9 0.3 8.0 0.4 11.8 1.2 11.3 0.5 13.4 0.9
8 5.0 0.1 5.5 0.1 6.0 0.1 7.2 0.3 6.5 0.3 9.7 0.6 9.0 0.2 10.0 0.5
9 4.9 0.1 4.9 0.1 5.0 0.1 6.3 0.3 5.9 0.4 8.1 0.3 6.3 0.2 8.4 0.3
10 4.9 0.1 4.5 0.1 5.9 0.3 5.3 0.3 7.5 0.2 7.2 0.2
11 4.8 0.1 4.5 0.0 5.7 0.3 5.2 0.3 7.0 0.1 6.7 0.2
12 4.5 0.1 4.2 0.1 5.5 0.2 6.8 0.1 6.6 0.2
13 4.5 0.1 5.5 0.2 6.8 0.1
14 4.5 0.0

Most recent temperature and dissolved oxygen profile plots

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