Processing math: 100%

Data period: through 2017

Town County Delorme Map # True Basin Flushing Rate
ORIENT AROOSTOOK 53 1 0.22 flushes/yr
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
15 m
(49 ft) 		8 m
(28 ft) 		194 ha
(479 ac) 		16,275,373 m3
(13,195 ac-ft) 		8 km2
(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 2017 Secchi Disk Transparency Data"

Water Chemistry and Trophic State Parameters

Table Legend:

Color: Color (SPU), Alk: Alkalinity (mg/l CaCO3), SpCon: Specific Conductivity (μS/cm), pH: pH (standard units)

TP = Total Phosphorus (μg/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 (μg/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
1979 8.5 8.5 8.5 1
1988 9.1 8.7 8.7 8.7 1
2005 10 38 7.1 7.3 7.3 7.3 1 4.2 5 5.8
2007 9.8 10.5 10.8 4
2008 10.5 10.6 10.6 3
2009 4 7.6 7.6 7.6 1

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
10 38 7.1 4 9.1 7.3 8.9 11 1.8 4.2 5 5.8

Most recent late summer temperature and dissolved oxygen profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
1988-08-16
2005-08-08
Depth (m) TEMP DO TEMP DO
0 23 8.4 23 8.8
1 24 8.1 23 8.9
2 23 8.1 23 9.0
3 23 8.1 22 9.1
4 23 8.1 22 9.1
5 23 8.1 22 9.1
6 22 8.7 22 9.3
7 19 8.9 17 11.5
8 17 8.3 13 11.3
9 16 6.8 12 9.9
10 14 5.8 11 8.2
11 14 4.6 11 7.7
12 13 4.1 10 6.4
13 10 5.7
14 10 5.0

Recent temperature and dissolved oxygen profile plots

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