Data period: through 2018

Town County Delorme Map # True Basin Flushing Rate Elevation
BIG SQUAW TWP PISCATAQUIS 41 1 1.44 flushes/yr 1117 ft
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
5 m
(17 ft) 		3 m
(9 ft) 		212 ha
(524 ac) 		5,596,263 m3
(4,537 ac-ft) 		14 km2
(5.2 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
1977 16 1.5 1.5 1.5 1 5.5 5.5 5.5
1978 9 19 13 1.2 1.7 2.5 5 3.7 8.0 9.4
1979 9.5 43 19 1.1 1.8 3.0 5 4.5 6.0 8.2
1980 15.7 32 21 16 1.2 1.8 2.7 6 6.8 7.4 8.4
1982 9.0 45 21 1.5 1.5 1.5 1 7.4 7.4 7.4
1983 10.0 16 1.5 1.5 1.5 1 6.4 6.4 6.4
1984 7.0 20 1.5 2.1 2.7 4 5.9 5.9 5.9
1987 10.0 37 19 1.5 1.5 1.5 1
1998 10.0 28 10 3.7 4.2 4.7 1 3.9 3.9 3.9
2000 10.0 28 11 3.8 3.8 3.8 1 4.8 4.8 4.8
2002 15 11.0 34 9 4.5 4.5 4.5 1 3.1 3.1 3.1

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
15 10 32 16 19 16 13 1.1 2.3 4.7 2.5 3.1 5.9 9.4

Temperature and Dissolved Oxygen Profiles

Late summer only; limited to eight most recent profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
1978-09-14
1979-09-11
1980-08-27
1982-08-18
1983-08-15
1998-08-19
2000-08-18
2002-08-14
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO
0 14 10 15 9.6 21 9.0 20 9.1 21 8.6 21 8.5 20 9.2 25 8.5
1 13 10 15 9.6 21 8.9 20 9.1 21 8.6 21 8.4 20 9.2 24 8.6
2 12 10 15 9.6 21 8.9 20 9.0 20 8.7 21 8.4 20 9.3 24 8.6
3 12 10 15 9.6 21 8.9 20 9.0 20 8.4 21 8.4 20 9.4 22 8.8
4 15 9.6 21 8.9 19 9.0 19 8.2 21 8.4 19 9.4 22 8.7
5 21 8.5

Most recent temperature and dissolved oxygen profile plots

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