Data period: through 2018

Town County Delorme Map # True Basin Flushing Rate Elevation
T05 R07 WELS PENOBSCOT 51 1 4.29 flushes/yr 778 ft
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
8 m
(25 ft) 		3 m
(10 ft) 		262 ha
(647 ac) 		8,010,000 m3
(6,494 ac-ft) 		12 km2
(4.7 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
1974 9.7 3.0 3.8 4.6 6 2.1 3.5 5.7
1975 8.0 3.4 4.4 5.4 6 1.8 2.8 4.1
1976 8.8 29 9.4 2.6 4.4 5.6 7 0.9 3.0 6.5
1977 9.0 4.5 4.5 4.5 1
1991 13.0 3.5 3.9 4.1 3 3.9 3.9 3.9
1992 3.5 4.0 4.5 3
1993 3.8 4.4 4.9 2
1996 9.5 30 12.0 3.6 4.0 4.9 2 5.2 5.2 5.2
1997 3.7 4.8 5.6 6
1998 4.0 5.0 6.0 6
1999 4.4 5.0 5.8 6
2007 11 9.5 31 7.3 11.0 4.6 4.6 4.6 1 3.6 3.6 3.6

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
11 9.2 30 7.3 11 8.8 2.6 4.4 6 4.1 0.9 3.7 6.5

Temperature and Dissolved Oxygen Profiles

Late summer only; limited to eight most recent profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
1976-08-24
1996-08-27
2007-08-10
Depth (m) TEMP DO TEMP DO TEMP DO
0 22 8.8 22 8.6 22 8.6
1 22 8.8 22 8.4 22 8.7
2 22 8.7 21 8.4 21 8.6
3 22 8.7 21 8.4 21 8.6
4 22 8.7 21 8.3 21 8.5
5 22 8.6 21 7.9 21 8.6
6 20 7.0 20 0.3 21 8.4

Most recent temperature and dissolved oxygen profile plots

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