Data period: through 2018

Town County Delorme Map # True Basin Flushing Rate Elevation
KATAHDIN IRN WKS TWP PISCATAQUIS 42 1 NA flushes/yr 591 ft
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
8 m
(28 ft) 		2 m
(8 ft) 		123 ha
(305 ac) 		NA m3
(NA ac-ft) 		NA km2
(NA 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
1984 10.0 7 3.8 4.6 5.5 5 1.5 1.5 1.5
2000 3.4 3.8 4.2 6
2001 12.0 32 6.9 13 12 2.6 3.8 4.6 6 9.8 9.8 9.8
2002 2.6 3.8 4.3 6
2003 2.2 3.6 4.5 6
2004 3.1 3.8 5.4 6
2005 3.5 3.9 4.6 5
2006 30 9.8 28 6.9 9 2.1 3.7 5.5 6 1.1 1.1 1.1

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
30 11 30 6.9 9.7 12 2.1 3.9 5.5 5.8 1.1 4.1 9.8

Temperature and Dissolved Oxygen Profiles

Late summer only; limited to eight most recent profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
1984-09-06
2001-08-14
2006-08-22
Depth (m) TEMP DO TEMP DO TEMP DO
0 15 8.6 23 8.1 18 8.9
1 15 8.5 22 8.1 17 9.0
2 15 8.4 22 8.0 17 8.9
3 15 8.3 21 7.5 17 8.9
4 15 8.3 18 3.5 17 9.0
5 15 8.4 16 0.1 17 8.9
6 15 8.5 14 0.1 16 6.5
7 15 8.6 10 0.1 16 5.2
8 10 0.1 15 1.9

Most recent temperature and dissolved oxygen profile plots

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