Data period: through 2017

Town County Delorme Map # True Basin Flushing Rate
OTIS HANCOCK 24 1 1.68 flushes/yr
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
8 m
(25 ft) 		3 m
(9 ft) 		27 ha
(67 ac) 		752,732 m3
(610 ac-ft) 		2 km2
(0.7 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
2003 17 6.0 7 5.5 5.5 5.5 1 3.1 3.1 3.1
2004 28 3.2 21 6.5 9.5 11 4.7 5.0 5.4 2 3.4 3.5 3.6

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
22 3.2 21 6.5 7.8 9 4.7 5.3 5.5 1.5 3.1 3.3 3.6

Most recent late summer temperature and dissolved oxygen profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
2003-09-05
2004-09-02
Depth (m) TEMP DO TEMP DO
0 20 9.9 22 8.1
1 20 9.9 22 8.1
2 19 9.9 22 8.1
3 19 9.9 22 8.1
4 19 9.7 21 6.7
5 15 1.8 16 0.8
6 11 0.0 13 0.1
7 10 0.1

Recent temperature and dissolved oxygen profile plots

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