Data period: through 2018

Town County Delorme Map # True Basin Flushing Rate Elevation
DEDHAM HANCOCK 23 1 1.43 flushes/yr 413 ft
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
12 m
(40 ft)
5 m
(17 ft)
21 ha
(52 ac)
1,098,523 m3
(891 ac-ft)
2 km2
(0.8 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
1990 5 24 6.6 6.2 9.2 4.2 4.6 5.2 5 1.0 3.6 4.8
1991 5 24 6.6 5.5 16.0 5.2 5.3 5.5 2 2.8 3.0 3.1
1996 4 24 8.0 12.0 4.1 4.1 4.1 1 4.9 4.9 4.9

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
4.7 24 6.6 6.6 12 4.1 4.7 5.5 2.7 1 3.8 4.9

Temperature and Dissolved Oxygen Profiles

Late summer only; limited to eight most recent profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
1990-08-14
1991-08-29
1996-08-20
Depth (m) TEMP DO TEMP DO TEMP DO
0 23.7 8.3 22.6 9.0 22.8 8.6
1 23.7 8.3 22.0 9.0 22.8 8.5
2 23.6 8.3 21.5 9.1 21.8 8.4
3 21.8 7.6 20.8 8.9 20.9 7.9
4 15.6 7.8 19.8 8.5 15.9 4.5
5 11.3 4.8 15.0 5.7 12.7 3.8
6 9.7 4.6 11.8 4.8 10.7 2.9
7 8.2 4.2 9.2 3.3 9.9 2.8
8 7.3 4.2 8.1 3.2 8.9 2.6
9 6.5 3.7 7.3 2.1 8.3 2.1
10 6.1 2.3 7.1 1.3 8.2 1.5
11 6.0 1.5 7.0 0.3 8.0 0.9
12 5.8 1.0 6.9 0.2 7.8 0.3

Most recent temperature and dissolved oxygen profile plots

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