Data period: through 2018

Town County Delorme Map # True Basin Flushing Rate Elevation
MANCHESTER KENNEBEC 12 1 5.36 flushes/yr 366 ft
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
3 m
(10 ft) 		1 m
(5 ft) 		19 ha
(47 ac) 		269,617 m3
(219 ac-ft) 		3 km2
(1 mi2)

Secchi Disk Transparency Graphs

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

## [1] "No 2018 Secchi Disk Transparency Data"

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
2005 11 19 2.1 2.1 2.1 1 1 3.5 3.5 3.5
2006 53 15 53 6.9 20 2.0 2.0 2.0 1 1 7.4 7.4 7.4
2007 15 7.4 21 2.2 2.2 2.2 1 1 8.9 8.9 8.9
2008 15 6.9 15 2.1 2.1 2.1 1 1 8.6 8.6 8.6
2009 19 18 2.6 2.6 2.6 1 1 6.2 6.2 6.2
2010 16 12 2.4 2.4 2.4 1 1 4.7 4.7 4.7
2011 32 3.0 3.0 3.0 1 1 35.0 35.0 35.0
2012 28 15 49 7.4 16 2.8 2.8 2.8 1 1 7.4 7.4 7.4
2013 18 17 2.5 2.5 2.5 1 1 7.0 7.0 7.0
2014 15 2.5 2.5 2.5 1 1 7.5 7.5 7.5
2015 15 17 2.7 2.7 2.7 1 1 7.9 7.9 7.9
2016 16 14 2.7 2.7 2.7 1 1 4.9 4.9 4.9
2017 17 14 2.9 2.9 2.9 1 1 4.1 4.1 4.1
2018 25 16 56 7.2 14 2.9 2.9 1 4.0 4.0 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
35 16 53 7.1 18 14 2 2.5 3 1 3.5 8.4 35

Temperature and Dissolved Oxygen Profiles

Late summer only; limited to eight most recent profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
2011-08-23
2012-08-28
2013-08-27
2014-08-28
2015-08-10
2016-08-23
2017-08-24
2018-08-30
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO
0 24 8.8 26 8.8 25 7.8 25 8.2 24 7.6 23 7.2 24 7.8 26 7.9
1 24 8.8 25 8.9 23 7.4 25 8.1 24 7.4 23 6.8 24 7.7 26 8.0
2 23 7.2 25 8.7 23 4.9 23 4.4 23 6.7 23 6.8 24 7.8 25 7.6
3 22 0.5 24 4.2

Most recent temperature and dissolved oxygen profile plots

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