Data period: through 2018

Town County Delorme Map # True Basin Flushing Rate Elevation
T10 SD HANCOCK 25 1 0.14 flushes/yr 208 ft
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
68 m
(222 ft) 		21 m
(68 ft) 		821 ha
(2,028 ac) 		171,040,035 m3
(138,664 ac-ft) 		21 km2
(8.1 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 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
1980 11.5 13 14 6
1981 2.0 33 4 4 10.5 12 14 5 1 0.9 0.9 0.9
1982 10.1 12 14 5
1983 8.7 11 14 5
1984 3.0 1 1 9.1 12 14 6 2 0.8 0.8 0.8
1985 2.0 22 11.4 13 16 6
1986 11.4 13 14 5
1987 0.6 25 2 4 9.1 12 16 6
1988 10.4 12 13 5
1989 8.5 10 12 6
1990 9.8 11 12 5
1991 5.0 24 6.3 3 10.1 11 12 5
1992 10.7 11 12 5
1993 9.5 11 12 5
2000 5.0 25 4 12.4 12 12 1 1.0 1.0 1.0
2012 7 1.2 21 6.2 3 11.3 11 11 1 1.6 1.6 1.6
2015 3 2 10.9 11 12 2 1.9 1.9 1.9
2016 5 4.0 23 6.5 2 10.0 11 13 1 1.3 1.3 1.3

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 2.8 25 6.3 2.8 2.8 8.5 12 16 4.4 0.8 1.2 1.9

Temperature and Dissolved Oxygen Profiles

Late summer only; limited to eight most recent profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
1981-08-21
1984-09-07
1987-08-20
1991-09-05
2000-08-22
2015-08-14
2016-09-01
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO
0 20.5 9.2 19.0 9.2 22.5 8.3 19.9 9.3 20.5 9.0 23.5 8.6 22.6 8.8
1 19.9 9.2 23.4 8.6 22.4 8.8
2 20.5 9.2 19.0 9.1 22.5 8.3 19.7 9.2 20.3 8.9 23.2 8.6 22.2 8.8
3 19.5 9.2 23.0 8.6 22.1 8.8
4 20.5 9.2 19.0 9.0 22.5 8.3 19.4 9.3 20.2 8.9 22.7 8.6 22.0 8.7
5 19.3 9.2 22.5 8.6 22.0 8.7
6 20.2 9.2 19.0 9.0 22.2 8.3 19.2 9.2 20.2 8.8 22.4 8.6 22.9 8.7
7 19.2 9.2 22.3 8.6 22.9 8.7
8 20.0 9.2 19.0 9.0 21.0 9.2 19.1 9.2 20.2 8.8 21.8 8.7 21.8 8.7
9 19.1 9.2 19.4 9.2 21.8 8.7
10 19.8 9.2 18.5 9.1 20.5 9.2 19.0 9.2 20.1 8.7 17.6 9.4 21.5 8.7
11 19.0 9.2 15.9 9.5 15.4 10.9
12 15.0 11.6 11.0 10.8 13.2 11.6 18.8 9.2 12.9 11.5 12.7 10.1 12.3 11.5
13 14.0 11.0 11.4 10.4 10.2 11.6
14 11.0 12.4 11.0 11.4 10.2 11.8 10.5 10.5 9.3 11.6
15 9.5 12.1 10.0 11.5 9.6 10.7 8.9 11.6
16 10.2 11.0 9.0 11.6 8.0 11.9
17 8.4 11.4 8.8 10.8 8.4 11.6
18 9.0 12.0 7.8 11.4 7.9 11.6
19 7.5 11.4 7.7 11.0 8.0 11.5
20 10.5 11.0 7.2 11.8 7.0 11.4 7.8 11.4
21 7.0 11.1 7.2 11.4
22 6.8 11.4
23 6.5 11.2 6.9 11.4
24 6.1 11.4
25 7.0 12.0 6.2 11.9 6.1 11.6 6.2 11.2 6.5 11.5
26 7.8 11.1 6.0 11.4
27
28 5.9 11.3
29
30 6.2 11.4 6.0 11.6 5.8 11.6 5.8 11.1 5.7 11.2 6.2 11.4
31
32
33
34
35 6.0 11.4 5.5 11.6 5.6 11.1 5.4 11.2 6.0 11.4
36
37
38
39
40 6.0 11.4 5.8 11.4 5.3 11.6 5.4 11.1 5.2 11.1 5.9 11.2
41
42
43
44
45 5.6 11.4 5.2 11.5 5.2 10.9 5.1 11.0 5.8 11.1
46
47
48
49
50 5.3 11.2 5.0 10.8 5.8 10.8
51
52
53
54
55 4.9 10.6 5.7 10.6
56
57
58
59
60 5.2 11.0 5.7 10.3
61
62
63
64
65 5.7 9.6

Most recent temperature and dissolved oxygen profile plots

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