Data period: through 2018

Town County Delorme Map # True Basin Flushing Rate Elevation
UNITY WALDO 22 1 1.23 flushes/yr 175 ft
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
12 m
(41 ft) 		6 m
(19 ft) 		1,021 ha
(2,522 ac) 		57,959,154 m3
(46,988 ac-ft) 		74 km2
(29 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 4.40 4.4 4.5 2
2000 20 61 26 31 0.85 1.9 2.8 5 22.0 24 27
2001 28 20 200 21 1.10 1.9 3.3 3 8.7 22 30
2002 27 26 24 23 1.10 1.5 2.1 5 25.2 30 35

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
20 61 27 23 85 22 0.8 2.4 4.5 3.8 8.7 25 35

Temperature and Dissolved Oxygen Profiles

Late summer only; limited to eight most recent profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
2000-08-11
2000-08-30
2001-08-05
2002-08-04
2002-08-18
2002-09-01
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO
0 23 10.9 21 9.7 27 9.7 26 9.0 27 9.6 22 6.5
1 22 10.0 21 9.6 26 9.9 26 8.9 27 9.6 22 6.4
2 22 9.3 21 9.6 26 9.5 25 8.1 27 9.4 22 6.3
3 21 8.5 21 9.6 26 9.1 24 7.4 25 8.1 22 6.2
4 21 8.1 21 9.6 24 7.3 23 6.4 24 6.5 22 6.2
5 19 4.0 21 9.5 22 2.0 22 4.6 22 2.2 22 6.1
6 19 3.2 21 9.2 20 0.2 21 1.7 21 0.1 22 6.0

Most recent temperature and dissolved oxygen profile plots

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