Data period: through 2018

Town County Delorme Map # True Basin Flushing Rate Elevation
SMITHFIELD SOMERSET 20 1 0.25 flushes/yr 263 ft
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
8 m
(27 ft)
5 m
(16 ft)
698 ha
(1,724 ac)
33,682,695 m3
(27,307 ac-ft)
11 km2
(4.3 mi2)

Secchi Disk Transparency Graphs

Graph Legend: Secchi symbols = average Secchi Disk Transparency Values; tick marks = maximum and minimum values for each year.

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
2018 5 13 59 7.5 11 4 5 5.9 5 3 3.8 5

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
5 13 59 7.5 11 4 5 5.9 5 3 3.8 5

Temperature and Dissolved Oxygen Profiles

Late summer only; limited to eight most recent profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
2018-08-06
2018-09-10
Depth (m) TEMP DO TEMP DO
0 27 8.5 22 8.7
1 27 8.4 22 8.7
2 26 8.3 22 8.7
3 26 8.1 22 8.7
4 26 8.2 22 8.6
5 26 7.7 22 8.6
6 22 8.6

Most recent temperature and dissolved oxygen profile plots

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