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Data period: through 2017

Town County Delorme Map # True Basin Flushing Rate
T06 R01 NBPP WASHINGTON 45 1 2.68 flushes/yr
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
9 m
(30 ft) 		3 m
(10 ft) 		98 ha
(243 ac) 		2,962,824 m3
(2,402 ac-ft) 		12 km2
(4.7 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 (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
2004 3.6 4.4 4.9 4
2009 7.7 21 6.1 12.8 4.0 4.4 4.8 5 3.0 3.8 4.8
2010 30 7.4 24 5.3 11.2 4.2 4.7 5.0 5 2.4 3.2 4.1
2011 30 7.0 21 6.8 11.1 3.8 4.6 5.8 7 2.4 3.1 3.9
2012 34 7.4 16 6.9 10.1 4.2 4.7 5.5 5 2.4 3.4 4.1
2013 37 7.2 25 6.9 10.1 3.0 4.4 6.0 6 2.4 3.8 6.1
2014 30 7.2 20 6.8 12.7 3.8 4.7 5.2 6 1.3 3.9 4.9
2015 27 7.2 20 6.9 10.8 4.5 5.1 5.6 6 3.3 4.8 7.3
2016 22 7.4 22 7.0 9.2 5.1 5.3 5.7 5 2.2 4.4 7.0
2017 31 6.0 20 6.9 11.0 4.5 4.5 4.5 1 2.8 2.8 2.8

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
30 7.2 21 6.1 11 3 4.7 6 5 1.3 3.7 7.3

Most recent late summer temperature and dissolved oxygen profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
2014-09-10
2014-09-26
2015-08-05
2015-09-09
2015-09-23
2016-08-01
2016-08-16
2016-09-08
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO
0 21 7.9 17 9.3 25 8.1 24 8.0 21 8.2 26 8.1 23 7.9 23 8.4
1 21 7.9 16 9.4 24 8.1 24 7.9 20 8.2 25 8.1 23 7.9 23 8.4
2 21 7.8 16 9.2 24 8.1 24 7.9 20 8.1 25 8.0 23 7.8 23 8.4
3 21 7.8 16 9.0 24 8.0 23 7.9 20 8.1 25 7.7 23 7.7 22 8.1
4 21 7.7 16 8.8 22 6.1 23 7.0 20 8.1 23 6.0 23 7.6 22 7.3
5 20 2.8 16 8.7 20 2.3 22 5.5 20 8.1 21 1.7 23 7.6 22 7.2
6 17 0.3 16 8.5 18 0.2 20 0.3 20 8.0 18 0.7 19 3.0 21 6.2
7 14 0.2 16 8.2 16 0.2 16 0.2 18 0.5 16 0.2 16 0.2 18 0.3
8 12 0.1 15 7.8 14 0.1 14 0.2 14 0.3 14 0.1 14 0.1 15 0.2

Recent temperature and dissolved oxygen profile plots

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