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.

## [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
1999 16
2004 3 8 45 18 18 1.6 3.5 4.9 5 1.0 1.0 1
2005 15 12 1.0 3.6 5.0 6 3.9 13.3 46
2006 16 1.8 3.4 5.8 7 2 3.2 9.5 18
2007 18 1.2 3.9 6.0 8 3 2.0 6.6 29
2008 2.1 3.8 5.8 7
2009 17 1.4 4.3 5.9 7 1 1.9 8.2 34
2010 26 0.9 2.3 4.2 7 3.1 16.0 47
2011 15 2.2 4.1 6.2 6 2 1.9 7.3 16
2012 18 0.8 3.4 6.0 7 1 1.2 18.3 85

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
3 8 45 18 16 15 0.8 3.6 6.2 6.7 1 10 85

Temperature and Dissolved Oxygen Profiles

Late summer only; limited to eight most recent profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
2010-08-17
2010-08-30
2011-08-01
2011-08-17
2011-09-02
2012-08-13
2012-08-27
2012-09-10
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO
0 24 3.8 24 9.2 26 8.1 24 8.4 23 8.8 25 9.2 25 10.4 21 7.4
1 23 3.3 24 9.2 26 8.1 23 8.6 23 8.9 25 9.2 25 10.2 22 7.1
2 23 3.1 24 9.2 25 8.1 23 8.7 22 8.7 25 8.5 24 8.1 22 7.1
3 23 2.6 23 9.1 25 8.0 23 8.5 22 8.3 25 8.2 24 7.8 22 7.1
4 23 2.5 23 8.2 24 7.9 23 8.8 22 7.7 24 7.9 23 7.2 22 7.1
5 23 2.1 22 7.1 24 7.5 22 8.7 22 6.3 24 8.3 23 7.2 22 7.1
6 23 2.2 22 2.6 24 6.5 22 8.7 22 6.2

Most recent temperature and dissolved oxygen profile plots

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