Data period: through 2018

Town County Delorme Map # True Basin Flushing Rate Elevation
MARSHFIELD WASHINGTON 26 1 6.8 flushes/yr 213 ft
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
7 m
(22 ft) 		3 m
(10 ft) 		22 ha
(54 ac) 		689,337 m3
(559 ac-ft) 		1 km2
(0.2 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
1978 27 7 5.8 5.8 5.8 1 1.4 1.4 1.4
1979 7 22 7.5 4.7 5.2 6.1 4 8 2.6 2.6 2.6
1981 2.5 3.4 4.9 4
1991 7.7 3.3 3.3 3.3 1
1996 3 27 3.0 3 5.3 5.3 5.3 1 1.4 1.6 1.7

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 25 5.2 7 3 7.7 2.5 4.6 6.1 2.2 1.4 1.8 2.6

Temperature and Dissolved Oxygen Profiles

Late summer only; limited to eight most recent profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
1996-08-26
Depth (m) TEMP DO
0 23 8.0
1 22 8.0
2 22 8.0
3 21 7.7
4 20 6.0
5 16 1.4

Most recent temperature and dissolved oxygen profile plots

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