Data period: through 2018

Town County Delorme Map # True Basin Flushing Rate Elevation
DEDHAM HANCOCK 23 1 0.18 flushes/yr 535 ft
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
23 m
(75 ft) 		14 m
(45 ft) 		17 ha
(42 ac) 		2,304,638 m3
(1,868 ac-ft) 		1 km2
(0.2 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
1984 7.8 8.1 8.4 2
1985 7.0 30 6 12.0 8.3 10.2 12.3 4
1990 5.5 31 7.2 4 8.8 7.7 9.6 11.0 5 0.7 1.3 3.1
2015 9.0 9.4 10.0 3

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
6.2 30 7.1 5 10 7.7 9.3 12 3.5 0.7 1.3 3.1

Temperature and Dissolved Oxygen Profiles

Late summer only; limited to eight most recent profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
1985-09-03
1990-08-16
Depth (m) TEMP DO TEMP DO
0 19.5 8.8 23.8 8.8
1 23.8 8.8
2 19.1 8.8 23.7 8.8
3 23.7 8.7
4 19.0 8.8 23.7 8.7
5 23.7 8.8
6 19.0 8.9 23.1 8.7
7 18.9 12.4
8 18.9 9.0 15.8 13.2
9 18.2 9.9 12.9 13.8
10 13.5 12.3 10.5 13.8
11 11.4 12.3 9.4 13.6
12 10.1 12.2 8.3 13.5
13 9.1 12.1 7.9 13.2
14 8.5 11.9 7.3 12.6
15 8.0 11.7 6.9 12.0
16 7.5 11.0 6.6 11.6
17 7.0 10.1 6.3 10.7
18 6.9 9.6 6.1 9.0
19 6.5 8.3 6.0 7.5
20 5.8 4.5
21 6.1 5.1 5.7 3.2
22 5.7 1.5
23 5.6 0.4

Most recent temperature and dissolved oxygen profile plots

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