Data period: through 2018

Town County Delorme Map # True Basin Flushing Rate Elevation
BOWDOIN COL GR WEST PISCATAQUIS 41 1 1.92 flushes/yr 1123 ft
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
20 m
(64 ft)
4 m
(14 ft)
380 ha
(939 ac)
16,100,000 m3
(13,052 ac-ft)
41 km2
(16 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 12 22
1975 12 22 17 2.3 3.0 3.8 2 4.8 4.8 4.8
1976 16 35 13 3.2 3.2 3.2 1 3.6 3.6 3.6
2011 10 3.4 3.4 3.5 1 4.6 4.6 4.6
2013 4.5 4.7 4.8 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
13 26 12 17 2.3 3.6 4.8 1.2 3.6 4.3 4.8

Temperature and Dissolved Oxygen Profiles

Late summer only; limited to eight most recent profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
1974-08-14
1975-09-10
1976-08-23
2011-09-01
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO
0 22 8.5 15.5 9.4 22 8.5 20 8.3
1 15.5 9.4 22 8.5 20 8.3
2 22 8.4 15.4 9.4 22 8.6 20 8.2
3 22 8.4 15.4 9.3 20 8.2 20 8.1
4 15.3 9.4 19 6.9 19 8.1
5 22 7.8 15.2 9.4 18 5.4 19 8.1
6 19 4.9 15.2 9.4 17 3.1 19 7.3
7 15.2 9.4 15 0.2
8 15.2 9.3 12 0.1
9 9.8 0.5 10 0.1
10 8.4 0.5 10 0.1
11 8.3 0.4 10 0.1
12 8.0 0.2 10 0.1

Most recent temperature and dissolved oxygen profile plots

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