Data period: through 2017

Town County Delorme Map # True Basin Flushing Rate
RANGELEY FRANKLIN 18 1 0.9 flushes/yr
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
40 m
(132 ft) 		10 m
(34 ft) 		6,721 ha
(16,608 ac) 		693,360,070 m3
(562,116 ac-ft) 		380 km2
(147 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
2002 5.1 6.0 6.5 2
2003 5.0 5.0 5.8 6.5 5
2004 7.0 5.9 5.9 6.0 2
2005 5.5 5.8 6.1 6.5 3
2006 5.0 5.0 5.1 6.2 6.8 3
2007 4.9 5.8 6.6 2
2008 5.5 4.8 5.0 5.2 2
2009 5.5 5.0 5.7 6.8 3
2010 5.7 5.9 6.1 1
2011 6.0 4.3 5.0 5.5 2
2012 5.5 6.0 6.3 6.6 2
2013 6.0 4.4 5.3 6.3 2
2015 5.2 5.6 6.1 2
2016 6.1 6.1 6.1 1
2017 6.0 6.0 6.0 1

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
5.2 5.8 4.3 5.8 6.8 2.2 Inf 1

Most recent late summer temperature and dissolved oxygen profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
2009-08-14
2009-09-06
2011-08-09
2011-09-04
2012-08-20
2012-09-02
2013-08-16
2017-08-21
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO
0 23 8.4 20 8.8 23.5 8.0 20.5 8.8 23 8.1 22 8.6 20 8.7 20.7 8.5
1 23 8.5 19 8.5 22.3 8.1 20.4 9.0 23 8.1 22 8.6 20 8.8 20.6 8.5
2 22 8.6 19 8.6 22.1 8.1 20.3 8.9 22 8.2 21 8.6 19 8.8 20.3 8.6
3 22 8.6 19 8.6 21.9 8.0 20.0 8.9 22 8.2 21 8.5 19 8.7 20.1 8.4
4 22 8.5 19 8.5 21.6 7.8 19.9 8.8 22 8.1 21 8.7 19 8.7 20.0 8.4
5 22 8.4 19 8.5 20.8 7.5 19.7 8.7 22 8.0 21 8.6 19 8.7 20.0 8.4
6 21 8.2 19 8.3 20.5 7.4 19.6 8.6 22 7.9 21 8.4 19 8.7 20.0 8.4
7 20 8.1 19 8.3 20.2 7.3 19.5 8.6 22 7.4 21 8.5 19 8.7 19.9 8.4
8 19 7.8 18 8.3 19.5 7.0 19.3 8.4 21 7.0 21 8.5 19 8.6 19.8 8.2
9 17 7.5 18 8.0 18.2 6.8 18.9 8.2 18 6.0 21 8.5 19 8.6 19.6 8.2
10 16 7.4 17 7.0 15.5 6.8 18.5 7.9 16 5.8 19 6.9 19 8.5 17.5 7.0
11 14 7.4 17 6.5 14.2 6.9 17.3 7.4 15 5.9 17 6.0 17 6.6 16.3 6.7
12 13 7.5 16 6.4 12.7 7.2 15.7 7.0 13 6.2 14 5.9 14 6.1 14.4 6.6
13 12 7.6 14 6.3 11.7 7.3 13.5 6.6 12 6.5 13 6.0 14 6.0 12.2 7.0
14 12 7.6 13 6.3 11.0 7.5 11.6 6.5 11 6.7 12 6.3 13 5.9 10.4 7.3
15 12 7.6 12 6.1 10.7 7.7 10.8 6.5 11 6.7 11 6.3 13 5.5 10.0 7.3
16 12 7.5 11 5.9 10.1 7.4 10.5 6.5 11 6.2 12 5.3 9.9 7.2
17 11 7.5 11 5.4 9.5 7.8 9.9 6.4 10 6.2
18
19 11 5.0
20
21
22 11 4.8

Recent temperature and dissolved oxygen profile plots

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