Data period: through 2017

Town County Delorme Map # True Basin Flushing Rate
DEDHAM HANCOCK 23 1 0.71 flushes/yr
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
8 m
(27 ft) 		5 m
(17 ft) 		123 ha
(304 ac) 		6,265,944 m3
(5,080 ac-ft) 		5 km2
(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 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
1990 4.5 24 6.8 5.8 6 5.4 6.4 7.5 5 1.6 2.1 2.8

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
4.5 24 6.8 5.8 6 5.4 6.4 7.5 5 1.6 2.1 2.8

Most recent late summer temperature and dissolved oxygen profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
1990-08-14
1990-09-20
Depth (m) TEMP DO TEMP DO
0 23 8.4 17 9.2
1 23 8.4 17 9.0
2 23 8.4 17 8.9
3 23 8.4 17 8.9
4 23 8.4 17 8.9
5 23 8.2 17 8.9
6 22 8.1 17 8.9
7 21 6.2 17 8.5
8 19 4.6

Recent temperature and dissolved oxygen profile plots

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