Data period: through 2017

Town County Delorme Map # True Basin Flushing Rate
T04 ND HANCOCK 35 1 1.13 flushes/yr
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
8 m
(25 ft) 		5 m
(16 ft) 		9 ha
(22 ac) 		270,000 m3
(219 ac-ft) 		1 km2
(0.2 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 2.8 3.5 4.3 4
2009 6.6 21 6.0 10.2 3.1 3.3 3.7 5 2.4 2.8 3.5
2010 21 6.1 24 5.3 8.8 2.8 3.6 4.0 5 2.3 2.6 2.9
2011 30 5.7 21 6.7 10.0 3.0 3.5 4.0 5 1.8 3.0 4.0
2012 29 5.4 16 6.8 9.4 3.6 3.9 4.2 5 2.2 2.9 3.4
2013 34 6.1 25 6.8 9.6 3.6 4.0 4.6 6 1.6 3.0 4.8
2014 27 6.3 22 6.8 8.1 3.8 4.1 4.6 6 1.8 2.6 3.1
2015 23 6.5 22 7.0 8.1 3.8 4.1 4.5 5 2.1 4.0 6.8
2016 21 6.4 23 6.7 8.9 3.7 4.0 4.3 5 2.1 2.5 3.1
2017 23 6.3 22 6.9 8.5 3.4 4.0 4.5 5 1.8 2.4 2.7

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
26 6.2 22 6.1 9.1 2.8 3.8 4.7 5.1 1.6 2.9 6.8

Most recent late summer temperature and dissolved oxygen profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
2015-08-28
2015-09-08
2015-09-25
2016-09-07
2017-08-07
2017-08-22
2017-09-12
2017-09-27
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO
0 24 8.0 24 8.3 20 8.5 24 8.5 23 8.4 24 8.6 20 8.9 23 8.6
1 24 8.0 24 8.3 20 8.5 24 8.4 23 8.3 24 8.6 20 8.9 23 8.6
2 24 8.0 24 8.3 20 8.5 23 8.5 23 8.3 23 8.5 20 8.9 21 8.6
3 24 7.9 24 8.1 20 8.4 22 8.1 23 8.3 22 8.4 20 8.9 20 8.5
4 18 8.3 20 7.4 19 8.3 21 7.0 17 6.6 19 7.0 18 7.2 19 6.3
5 14 2.8 14 2.5 16 2.2 17 2.2 12 2.8 13 2.4 16 3.3 16 2.2
6 11 0.2 12 0.4 12 0.3 14 0.3 10 1.2 11 0.8 12 0.4 13 0.4

Recent temperature and dissolved oxygen profile plots

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