Data period: through 2017

Town County Delorme Map # True Basin Flushing Rate
T04 ND HANCOCK 34 1 0.58 flushes/yr
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
27 m
(88 ft) 		10 m
(34 ft) 		495 ha
(1,222 ac) 		14,850,000 m3
(12,039 ac-ft) 		11 km2
(4.3 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 10 10 10 1
1989 4.0 21 3 10 10 10 1 1.3 1.3 1.3
1996 4.0 23 2 4 12 12 12 1 1.1 1.1 1.1
1997 12 12 12 1
2003 3 5.5 23 3 13 13 13 1 0.6 0.6 0.6

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
3 4.5 22 2.7 4 10 12 13 1 0.6 1 1.3

Most recent late summer temperature and dissolved oxygen profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
1989-09-01
1996-08-22
1997-08-02
2003-08-20
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO
0 18.5 9.2 22.0 8.6 22 8.6 24.3 8.6
1 18.6 9.1 22.0 8.6 22 8.6 23.7 8.6
2 18.8 9.1 22.0 8.7 22 8.6 23.3 8.7
3 18.8 9.1 21.8 8.2 22 8.6 23.2 8.7
4 18.8 9.1 21.7 8.6 22 8.6 23.1 8.6
5 18.8 9.1 21.3 8.6 22 8.6 23.0 8.6
6 18.8 9.1 21.2 8.6 22 8.6 22.9 8.6
7 18.8 9.1 21.0 8.6 22 8.6 22.3 8.8
8 18.8 9.1 20.9 8.6 22 8.6 19.6 9.6
9 15.0 9.6 16.5 8.6 15.2 11.3
10 11.5 9.7 14.9 8.5 12.3 11.6
11 10.5 9.7 12.9 8.2 11.0 11.3
12 9.9 9.3 11.8 8.2 10.0 10.7
13 11.0 7.6 9.7 10.6
14 9.0 8.3 10.8 6.9 9.3 10.2
15 8.9 8.1 10.5 6.9 9.1 9.6
16 8.8 8.0 10.3 6.8 8.9 9.3
17 8.6 8.0 10.2 6.5 8.8 9.1
18 8.5 7.8 10.1 6.6 8.6 8.9
19 10.0 6.5 8.5 8.8
20 8.3 7.5 10.0 6.3 8.4 8.5
21 10.0 6.2 8.4 8.4
22 8.3 7.2 10.0 6.2 8.3 8.3
23 9.9 6.0 8.2 8.1
24 8.2 6.6 9.9 5.8 8.2 7.8

Recent temperature and dissolved oxygen profile plots

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