Data period: through 2018

Town County Delorme Map # True Basin Flushing Rate Elevation
T03 ND HANCOCK 34 1 0.66 flushes/yr 427 ft
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
8 m
(26 ft) 		5 m
(17 ft) 		59 ha
(147 ac) 		1,770,000 m3
(1,435 ac-ft) 		2 km2
(0.7 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 (\(\mu\)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
2004 5.3 5.5 5.8 3
2009 7.2 19 6.1 7.5 6.4 6.7 7.0 5 1 1.0 2.1 2.7
2010 5.4 6.7 22 5.5 8.8 5.0 6.0 6.9 5 1.4 2.8 4.7
2011 8.2 6.0 20 6.9 9.6 5.2 6.1 6.9 7 1.6 2.8 4.1
2012 9.1 5.6 14 6.9 6.2 6.2 6.7 7.3 5 1 1.1 2.0 2.7
2013 7.4 6.2 23 7.2 6.7 5.7 6.6 6.9 5 5 1.0 2.2 3.6
2014 6.6 6.2 20 7.0 7.5 6.2 6.6 6.9 6 3 1.5 2.1 2.4
2015 6.2 7.0 21 7.1 8.3 5.2 6.3 7.2 6 1 1.6 3.4 6.2
2016 5.9 6.8 22 7.1 8.4 5.5 6.2 6.8 9 5 1.0 2.2 3.0
2017 5.7 6.8 21 7.3 7.6 5.9 6.4 7.0 6 3 1.0 2.6 6.5
2018 6.5 6.8 23 7.1 8.0 4.8 5.9 6.4 4 2.0 3.2 4.0

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
6.8 6.5 20 6.3 7.9 4.8 6.3 7.3 5.5 1 2.5 6.5

Temperature and Dissolved Oxygen Profiles

Late summer only; limited to eight most recent profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
2015-09-08
2016-08-11
2016-09-07
2017-08-07
2017-08-22
2017-09-12
2018-08-07
2018-09-05
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO
0 24 8.3 24 8.2 23 8.6 24 8.3 23 8.6 20 8.9
1 24 8.3 24 8.2 23 8.6 24 8.2 23 8.6 20 8.9 28 8.1 24 8.3
2 24 8.3 24 8.2 23 8.6 24 8.2 23 8.6 20 8.9 27 8.1 24 8.2
3 24 8.3 24 8.2 22 8.5 24 8.2 22 8.6 20 8.9 27 8.0 23 8.2
4 24 8.3 24 8.1 22 8.6 23 8.2 22 8.6 20 8.9 26 8.2 23 8.2
5 24 8.1 24 8.0 22 8.3 23 8.2 22 8.3 20 8.9 26 7.9 23 8.2
6 23 7.6 24 7.6 22 8.2 23 8.2 22 8.1 19 8.9 25 5.3 23 7.9

Most recent temperature and dissolved oxygen profile plots

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