Data period: through 2017

Town County Delorme Map # True Basin Flushing Rate
T28 MD HANCOCK 24 1 0.36 flushes/yr
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
17 m
(57 ft) 		8 m
(25 ft) 		413 ha
(1,020 ac) 		30,800,000 m3
(24,970 ac-ft) 		14 km2
(5.6 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
1974 6.3 5.2 6.0 7.3 6 2.2 2.7 3.4
1975 4.8 20 6.4 5.9 7.0 9.0 7 1.7 2.2 2.7
1976 7.6 7 4.5 5.6 6.8 7 1.7 2.6 3.3
1977 4 5.5 6.3 7.3 5
1978 6.0 6.0 6.2 7.2 8.7 5
1980 8.0 35 7.0 6 8.6 8.6 8.6 1 2.1 2.1 2.1
1983 10.0 4.0 7 7.6 7.6 7.6 1 2.0 2.0 2.0
1985 7.3 7.9 8.7 4
1986 4.0 27 1.0 10 7.0 7.0 7.0 1
1989 4.0 5.2 7.2 3
2000 7.5 29 8.0 6.8 6.8 6.9 1 3.3 3.3 3.3

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
6.8 28 5.6 6.2 6.8 4 6.8 9 3.7 1.7 2.5 3.4

Most recent late summer temperature and dissolved oxygen profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
1975-09-08
1980-09-03
1983-09-12
1986-08-12
2000-08-22
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO
0 18 9.6 24 8.8 22 8.4 22 8.4 23 8.2
1 18 9.6 24 8.8 22 8.4 22 8.4 23 8.2
2 18 9.5 22 8.8 22 8.3 22 8.4 23 8.2
3 18 9.5 22 9.0 21 8.3 22 8.4 23 8.2
4 18 9.3 22 8.7 21 8.3 22 8.4 23 8.2
5 18 9.1 22 8.7 21 8.2 22 8.4 23 8.2
6 18 8.9 22 8.7 21 8.2 22 8.4 22 8.0
7 18 8.8 22 8.6 21 8.2 22 8.4 22 8.0
8 18 8.7 22 8.6 21 8.1 20 8.0 21 6.7
9 18 8.6 22 8.0 20 6.4 20 7.6 21 4.6
10 18 8.5 21 6.5 19 4.9 19 6.6 20 4.2
11 17 5.6 20 6.4 16 2.4 19 6.4
12 14 2.4 20 6.4 14 1.2 18 6.0
13 20 4.8 13 0.8 18 5.0
14 20 4.2 13 0.7 17 4.3
15 17 2.0 16 2.5

Recent temperature and dissolved oxygen profile plots

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