Data period: through 2017

Town County Delorme Map # True Basin Flushing Rate
MANCHESTER KENNEBEC 12 1 0.36 flushes/yr
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
21 m
(70 ft)
6 m
(20 ft)
9 ha
(22 ac)
556,038 m3
(451 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 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
1979 41 124 16 5.0 6.5 7.7 6 1.3 1.9 3.1
1980 38 93 10 16 4.7 6.2 7.9 6 1.7 1.9 2.0
1989 28 69 6 7.3 7.3 7.3 1 1.1 1.1 1.1
1996 30 72 18 11 8.5 8.5 8.5 1 1.9 1.9 1.9

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
34 89 11 11 16 4.7 7.1 8.5 3.5 1.1 1.7 3.1

Most recent late summer temperature and dissolved oxygen profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
1979-08-28
1979-09-13
1980-08-21
1980-09-30
1996-08-21
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO
0 22.0 8.8 20.4 9.2 23.0 8.9 14.5 10.2 23.0 8.9
1 21.0 9.4 19.8 9.3 23.0 8.9
2 21.0 9.2 19.5 9.2 22.5 8.8 14.5 9.9 23.0 8.9
3 21.0 9.6 23.0 8.9
4 20.5 9.4 22.0 8.8 14.0 10.2 23.0 8.8
5 20.0 9.4 23.0 8.8
6 19.0 9.1 22.0 8.8 14.0 10.2 20.0 12.8
7 17.0 12.0 16.0 12.6
8 13.0 12.0 14.5 11.6 15.2 12.6 14.0 9.9 13.0 11.6
9 11.5 10.8 10.5 11.2
10 9.2 10.3 10.0 9.6 10.0 11.6 10.0 10.8 8.5 10.4
11 7.0 9.5
12 6.2 7.0 6.4 7.5 7.0 8.6 7.0 8.3 6.2 6.8
13 5.0 2.8
14 5.0 3.2 5.0 4.5 5.2 4.4 5.0 3.9 5.0 0.4
15 4.9 0.2
16 4.3 0.4 4.3 0.2 5.0 0.3 4.0 0.8 4.5 0.1
17 4.5 0.1
18 4.0 0.2 4.1 0.0 4.8 0.2 4.0 0.7 4.5 0.1
19 4.5 0.1
20 4.0 0.1 4.0 0.0 4.5 0.1 3.5 0.6 4.5 0.1
21
22 4.0 0.0 4.0 0.0 4.5 0.1

Recent temperature and dissolved oxygen profile plots

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