Data period: through 2017

Town County Delorme Map # True Basin Flushing Rate
MARIAVILLE HANCOCK 24 1 4.06 flushes/yr
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
14 m
(47 ft)
4 m
(12 ft)
3,420 ha
(8,450 ac)
130,258,582 m3
(105,602 ac-ft)
126 km2
(49 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 2017 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
1973 23 0.60 0.9 1.2 2
1978 14 36 1.40 1.4 1.4 1 3.6 3.6 3.6
1998 1.10 1.4 1.9 3
1999 0.61 1.5 2.4 5
2000 1.12 1.5 2.4 5
2001 1.30 1.8 2.5 5
2002 1.10 1.5 2.0 3
2003 44 17 1.00 1.7 2.5 5 3.4 5.6 6.1
2004 1.00 1.6 2.1 5
2013 1.00 1.5 1.8 3
2014 1.20 1.9 4.8 4
2016 1.27 1.7 1.8 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
44 14 36 17 23 0.6 1.5 4.8 3.9 3.4 4.6 6.1

Most recent late summer temperature and dissolved oxygen profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
1978-08-14
2014-08-25
Depth (m) TEMP DO TEMP DO
0 24 8.9 25 8.1
1 24 8.9 23 8.0
2 24 8.9 22 7.3
3 24 8.9 22 7.2
4 22 8.6 22 7.0
5 22 8.5
6 21 8.4
7 21 8.0
8 20 5.6
9 18 2.0
10 16 0.4
11 14 0.3
12 12 0.3

Recent temperature and dissolved oxygen profile plots

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