Data period: through 2018

Town County Delorme Map # True Basin Flushing Rate Elevation
LONG POND TWP SOMERSET 40 1 NA flushes/yr 1157 ft
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
13 m
(44 ft) 		3 m
(9 ft) 		1,236 ha
(3,053 ac) 		NA m3
(NA ac-ft) 		NA km2
(NA 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 13 2.3 2.3 2.3 1
1976 9 3.0 3.0 3.0 1 2.0 2.0 2
1992 14 16 1.7 2.2 2.8 5 3.5 4.8 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 13 16 1.7 2.5 3 2.3 2 3.4 6

Temperature and Dissolved Oxygen Profiles

Late summer only; limited to eight most recent profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
1992-08-10
1992-09-10
Depth (m) TEMP DO TEMP DO
0 20 9.5 19 9.8
1 19 9.5 18 9.8
2 19 9.2
3 18 9.2 18 9.7
4 18 8.6
5 18 8.3 18 9.5
6 18 8.2 18 9.5
7 16 8.6
8 16 8.5
9 16 8.4
10 16 8.0
11 16 7.6
12 16 7.2

Most recent temperature and dissolved oxygen profile plots

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