Data period: through 2018

Town County Delorme Map # True Basin Flushing Rate Elevation
SANDY RIVER PLT FRANKLIN 18 1 1.19 flushes/yr 1729 ft
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
16 m
(52 ft) 		7 m
(22 ft) 		209 ha
(516 ac) 		13,866,866 m3
(11,242 ac-ft) 		25 km2
(9.6 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
1984 3 5 4.3 4.6 4.7 5 4.8 4.8 4.8
2001 13 18 6.4 4 9 6.6 6.6 6.7 1 3.6 3.6 3.6
2003 6 4.8 5.6 6.2 5
2004 16 12 24 6.4 7 7.0 4.5 5.3 6.1 8 5.7 5.7 5.7
2005 17 2 19 6.3 4 6.0 5.0 5.8 6.3 7 2.1 2.1 2.1
2006 16 2 19 6.3 6 8.5 10 4.2 5.2 6.2 6 2.6 2.6 2.6
2007 7.0 4.4 5.2 5.8 6
2008 5.0 4.5 5.4 6.6 7
2009 5.0 4.2 4.8 5.9 6
2010 4.8 5.3 5.8 5
2011 21 2 17 8.0 3.2 4.8 5.7 5
2012 5.0 6 4.0 4.6 5.4 6
2013 4.4 4.9 5.4 5
2014 4.6 5.3 6.3 8
2015 5.2 5.7 6.5 5
2016 11 4 21 6.6 6 16 4.1 5.2 6.6 11 2.8 2.8 2.8
2017 4.0 5.3 6.2 9
2018 4.9 4.9 2

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
16 5.4 20 6.4 5.4 6.4 10 3.2 5.3 6.7 6.2 2.1 3.6 5.7

Temperature and Dissolved Oxygen Profiles

Late summer only; limited to eight most recent profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
1984-09-13
2001-08-13
2004-08-25
2005-08-11
2006-08-28
2012-08-22
2016-08-09
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO
0 17 8.2 24 8.7 20 8.0 25 8.0 18 7.8 22 7.8 22 8.1
1 17 8.2 23 8.8 20 7.9 25 8.0 18 7.8 22 7.7 22 8.1
2 17 7.9 23 8.7 19 7.9 24 8.2 18 7.8 22 7.7 22 8.1
3 17 7.9 23 8.6 19 7.9 24 8.2 18 7.8 22 7.5 22 8.0
4 17 7.9 23 8.8 19 7.9 24 8.2 18 7.8 22 7.5 22 7.9
5 17 7.8 23 8.4 19 7.8 24 8.2 18 7.8 22 7.3 22 7.8
6 17 7.8 22 8.3 19 7.8 23 8.2 18 7.8 21 5.7 21 7.8
7 17 7.8 21 7.8 19 7.7 16 5.4 18 7.8 20 4.8 21 7.7
8 17 7.7 19 5.6 19 7.6 14 5.1 17 7.6 17 2.3 20 5.6
9 17 7.7 18 4.7 19 7.4 12 5.1 17 6.7 16 1.3 18 4.0
10 17 7.7 18 4.4 19 7.2 12 4.5 14 2.4 13 0.8 16 2.1
11 17 7.6 17 3.6 18 5.5 11 4.0 12 1.4 12 0.3 14 1.5
12 17 7.0 17 2.4 15 0.2 10 3.3 11 0.4 12 0.3 13 0.1
13 16 6.8 16 0.6 14 0.1 10 2.8 11 0.2 13 0.1
14 14 0.9 16 0.5 10 2.4 11 0.1
15 15 0.4 10 0.1

Most recent temperature and dissolved oxygen profile plots

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