Data period: through 2018

Town County Delorme Map # True Basin Flushing Rate Elevation
RICHARDSONTOWN TWP OXFORD 18 1 4.02 flushes/yr 1448 ft
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
25 m
(83 ft) 		10 m
(33 ft) 		1,823 ha
(4,505 ac) 		181,438,154 m3
(147,094 ac-ft) 		95 km2
(37 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
1996 5.8 6.2 6.6 5
1997 5.8 6.2 7.2 6
1998 8.0 26 7 5.1 5.8 6.5 5 3.6 3.6 3.6
1999 5.3 6.4 7.9 6
2000 5.3 5.8 6.6 4
2001 5.2 6.1 7.0 3
2002 6.0 6.5 7.1 5
2003 8.5 9.0 28 1 6.0 6.8 7.4 4 2.6 2.6 2.6
2004 5.8 6.2 7.0 3
2005 5.0 5.2 5.3 5.8 4
2006 17.0 5.6 26 6.9 5.0 4.2 4.8 6.8 5
2007 16.0 5.6 26 6.9 6.5 5.2 5.4 5.7 5
2008 5.0 4.1 4.8 5.0 5
2009 4.5 5.0 5.1 4
2016 6.5 6.5 6.8 2
2017 5.7 6.3 7.6 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
14 7 26 6.9 4 5.4 4.1 5.9 7.9 4.2 2.6 3.1 3.6

Temperature and Dissolved Oxygen Profiles

Late summer only; limited to eight most recent profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
1998-08-13
2003-08-18
Depth (m) TEMP DO TEMP DO
0 23 8.7 22.9 8.2
1 22 8.7 22.9 8.3
2 22 8.7 22.2 8.3
3 21 8.7 22.2 8.3
4 21 8.6 22.2 8.2
5 21 8.3 22.2 8.2
6 21 8.1 22.1 8.1
7 20 7.4 22.0 8.0
8 18 6.7 20.0 7.4
9 17 6.7 19.2 7.3
10 16 6.7 17.0 7.0
11 15 6.6 15.2 7.0
12 15 6.9 13.5 7.2
13 14 6.9 12.2 7.3
14 14 6.9 11.4 7.3
15 15 6.8 10.7 7.5
16 13 6.7 10.5 7.3
17 13 6.6 10.3 7.2
18 13 6.6 10.3 7.2
19 10.1 7.4
20 13 6.1 9.4 6.2
21 9.9 7.4
22 13 6.0 9.8 7.2
23 9.7 6.9
24 13 5.9 9.6 6.9
25 9.6 6.7
26 12 5.3 9.5 6.6
27
28 12 4.3 10.0 7.4

Most recent temperature and dissolved oxygen profile plots

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