Data period: through 2017

Town County Delorme Map # True Basin Flushing Rate
T05 R01 NBPP PENOBSCOT 45 1 4.46 flushes/yr
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
8 m
(28 ft) 		4 m
(12 ft) 		43 ha
(106 ac) 		1,566,637 m3
(1,270 ac-ft) 		14 km2
(5.4 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 3.7 4.3 5.4 4
2009 8.8 22 6.1 10.8 4.3 4.6 5.0 5 2.3 3.7 4.9
2010 24 8.3 25 5.5 9.0 4.6 5.1 5.8 5 2.8 3.4 4.6
2011 28 7.8 22 6.9 10.8 3.8 4.8 5.7 5 2.6 4.1 8.8
2012 32 8.4 17 6.9 8.1 4.2 5.0 5.3 5 2.2 4.0 5.6
2013 37 7.8 25 6.9 10.4 3.0 4.5 5.2 6 2.8 5.4 13.0
2014 28 7.8 22 6.8 9.6 4.4 4.9 5.2 5 2.7 3.7 5.3
2015 25 8.9 23 7.1 7.5 7 4.9 5.1 5.4 4 1.8 4.6 7.6
2016 23 8.3 24 7.1 9.9 4.8 5.3 5.8 5 1.9 4.1 5.7
2017 28 7.0 20 7.0 10.0 4.8 4.8 4.8 1 3.9 3.9 3.9

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
28 8.1 22 6.3 9.6 7 3 4.8 5.8 4.5 1.8 4.1 13

Most recent late summer temperature and dissolved oxygen profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
2014-09-26
2015-08-05
2015-08-25
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 16.1 9.1 25 8.2 26 8.0 24 8.2 21 8.3 26 8.1 24 8.3 24 8.4
1 16.0 9.1 25 8.2 26 7.9 24 8.2 20 8.3 25 8.1 24 8.3 24 8.4
2 15.8 9.1 25 8.2 25 7.8 24 8.0 20 8.2 25 8.1 24 8.3 23 8.3
3 15.5 8.8 22 9.2 24 7.9 23 7.9 20 8.3 24 8.0 23 8.1 22 7.6
4 15.3 8.5 18 3.7 19 0.6 21 4.7 20 8.0 20 6.1 22 5.8 22 6.4
5 14.9 7.6 14 1.6 15 0.5 16 0.3 17 0.5 16 2.5 17 1.0 19 0.4
6 12.9 0.3 12 0.5 12 0.2 13 0.2 13 0.3 14 0.3 14 0.2 15 0.2
7 10.3 0.1 10 0.2 11 0.1 11 0.2 11 0.2 12 0.2 12 0.1 13 0.2
8 9.8 0.1 10 0.1 10 0.1 10 0.1 10 0.2 12 0.1 11 0.1 12 0.1

Recent temperature and dissolved oxygen profile plots

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