Processing math: 100%

Data period: through 2018

Town County Delorme Map # True Basin Flushing Rate Elevation
T05 ND BPP WASHINGTON 35 1 0.54 flushes/yr 304 ft
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
20 m
(66 ft) 		7 m
(22 ft) 		2,166 ha
(5,352 ac) 		152,342,080 m3
(123,506 ac-ft) 		50 km2
(19 mi2)

Secchi Disk Transparency Graphs

Graph Legend: Secchi symbols = average Secchi Disk Transparency Values; tick marks = maximum and minimum values for each year.

Water Chemistry and Trophic State Parameters

Table Legend:

Color: Color (SPU), Alk: Alkalinity (mg/l CaCO3), SpCon: Specific Conductivity (μS/cm), pH: pH (standard units)

TP = Total Phosphorus (μg/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 (μg/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
1989 8.0 27 5.0 6.8 6.8 6.8 1 3.1 3.1 3.1
1990 9.0 20 6.8 5.0 7.8 7.8 7.8 1 1.9 1.9 1.9
1995 9.9 9.9 10.0 2
1996 7.0 28 6.0 5 7.2 7.2 7.2 1 2.6 2.8 2.9
2004 6.6 7.0 7.4 3
2007 6.2 6.2 6.2 1
2008 7.2 8.2 8.5 3
2009 8.0 21 6.2 4.0 6.9 7.5 8.6 5 1.3 2.0 2.3
2010 18 7.2 23 5.6 5.0 5.5 7.5 8.9 6 1.1 1.8 2.4
2011 22 6.8 21 6.9 4.9 6.4 7.3 8.6 8 1.0 1.8 2.4
2012 21 6.6 16 7.0 3.4 6.3 7.7 8.6 7 1.4 1.8 2.2
2013 23 7.0 25 7.1 4.2 6.6 7.5 8.3 7 1.1 1.7 2.3
2014 22 7.0 21 7.0 5.4 5.8 7.3 8.2 9 1.2 2.0 3.0
2015 21 7.5 22 7.0 4.0 6.8 7.6 8.4 7 1.4 1.9 3.9
2016 19 7.6 22 6.9 4.4 6.5 7.8 8.6 5 1.0 1.5 2.1
2017 16 7.2 22 7.1 4.1 7.5 8.6 9.7 6 1.1 1.7 2.3
2018 17 7.5 25 7.0 3.9 6.9 8.2 9.1 6 1.0 1.9 3.0

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
20 7.4 22 6.4 4.6 5 5.5 7.7 10 4.6 1 2 3.9

Temperature and Dissolved Oxygen Profiles

Late summer only; limited to eight most recent profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
2016-08-03
2016-09-06
2017-08-10
2017-08-28
2017-09-15
2018-08-06
2018-08-27
2018-09-14
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO
0 26 8.4 22 8.5 23 8.4 22 8.4 20 9.1
1 25 8.4 22 8.5 23 8.4 21 8.4 20 9.1 27 8.2 24 8.2 22 8.6
2 25 8.4 22 8.5 23 8.4 21 8.4 20 9.1 26 8.2 24 8.2 21 8.5
3 25 8.4 22 8.4 23 8.4 21 8.4 20 9.1 26 8.3 24 8.1 21 8.5
4 25 8.4 22 8.4 23 8.4 21 8.4 20 9.0 26 8.3 24 8.1 21 8.5
5 24 8.2 22 8.2 23 8.3 21 8.4 20 8.9 25 8.2 23 8.0 21 8.3
6 23 7.7 22 8.2 23 8.3 21 8.4 20 8.8 25 8.1 23 8.0 21 8.3
7 22 7.3 22 8.2 22 8.1 21 8.4 20 8.8 25 8.0 23 8.0 21 8.2
8 22 7.2 22 8.2 22 8.0 21 8.4 19 8.7 23 6.7 23 7.9 21 8.2
9 22 7.0 22 8.1 22 8.0 21 8.4 19 8.6 23 6.3 23 7.7 21 8.2
10 21 6.6 22 8.0 22 7.1 21 8.3 19 8.6 22 5.8 23 7.5 21 8.1
11 20 5.8 22 8.0 21 5.7 21 8.3 19 8.5 21 5.1 23 7.3 21 8.0
12 20 5.5 22 7.9 20 5.2 21 8.3 19 8.5 21 5.0 23 6.6 21 8.0
13 20 5.3 22 7.9 19 4.6 21 8.3 19 8.4 20 4.3 21 4.0 21 8.0
14 19 5.0 22 7.8 19 4.2 21 8.3 19 8.3 20 4.3 20 2.7 21 7.9
15 19 4.8 22 7.8 18 3.3 21 8.0 19 8.3 19 3.6 20 2.0 21 7.9
16 18 4.3 22 7.6 16 2.7 20 6.0 19 8.3 19 3.1 19 1.4 20 7.8
17 18 3.6 22 7.3 16 2.2 17 1.3 19 8.2 19 2.9 19 1.1 20 7.8
18 18 3.0 22 6.9 15 2.0 16 0.7 19 8.1 18 2.2 18 0.8 20 7.7
19 18 1.6

Most recent temperature and dissolved oxygen profile plots

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