Data period: through 2018

Town County Delorme Map # True Basin Flushing Rate Elevation
RAINBOW TWP PISCATAQUIS 50 1 5.2 flushes/yr 805 ft
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
13 m
(42 ft)
3 m
(10 ft)
38 ha
(94 ac)
1,218,640 m3
(988 ac-ft)
6 km2
(2.3 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 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
2001 7.0 8 1.6 1.6 1.6 1 3.0 3.0 3.0
2002 14 15 2.3 2.3 2.3 1 4.7 4.7 4.7
2003 43 11 18 2.3 2.3 2.3 1 3.6 3.6 3.6
2007 3.9 17 6.7 11 2.7 2.7 2.7 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
43 3.9 17 6.8 11 11 16 1.6 2.2 2.7 1 3 3.8 4.7

Temperature and Dissolved Oxygen Profiles

Late summer only; limited to eight most recent profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
2001-08-30
2002-08-24
2003-08-19
Depth (m) TEMP DO TEMP DO TEMP DO
0 21 9.5 21.5 7.3 23.2 7.4
1 21 9.0 21.5 7.3 23.1 7.6
2 20 9.0 21.4 7.3 22.8 7.5
3 20 9.0 21.4 7.2 22.7 7.3
4 20 8.5 21.3 7.2 22.2 7.0
5 16 5.5 16.4 3.0 16.7 5.1
6 11 3.0 11.9 1.2 12.0 3.3
7 8 2.0 9.9 1.8 9.0 2.9
8 7 1.0 9.0 0.9 8.3 2.7
9 8.6 0.2 7.0 1.1
10 8.4 0.1 6.7 0.7
11 8.2 0.1 6.5 0.3
12 8.1 0.1 6.4 0.2
13 8.0 0.1

Most recent temperature and dissolved oxygen profile plots

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