Data period: through 2017

Town County Delorme Map # True Basin Flushing Rate
MAPLETON AROOSTOOK 65 1 NA flushes/yr
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
10 m
(32 ft) 		4 m
(14 ft) 		48 ha
(118 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 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
1976 111 115 28 2.1 3.1 5.5 5 9.6 9.6 9.6
1977 83 132 23 21 1.7 2.4 3.1 4 0.4 6.2 10.7
1978 59 162 1.2 2.0 3.2 4 14.0 15.0 16.0
1979 63 141 1.4 1.9 4.0 4
1981 26 33 1.4 1.8 2.6 4 4.3 14.7 23.8
1983 20 26 3.6 5.7 8.3
1984 1.2 1.5 1.8 2
1985 2.2 3.4 4.6 1
1989 3.0 3.2 3.5 4
1991 2.7 3.5 4.8 4
1992 2.5 3.0 3.5 5 5.2 5.2 5.2
1998 73 190 16 26 4.1 4.4 4.7 1 5.1 5.1 5.1
1999 74 206 17 19 4.0 4.1 4.2 1 10.0 10.0 10.0
2000 74 186 17 21 2.7 3.7 4.9 5 7.7 8.4 9.2
2001 70 176 8.1 15 8 16 3.4 4.0 5.0 8 4.0 5.4 7.3
2002 81 210 19 11 17 2.8 3.5 4.2 4 5.8 8.4 11.0

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
76 169 8.1 20 21 20 16 1.2 3 5.5 3.7 0.4 8.5 24

Most recent late summer temperature and dissolved oxygen profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
2000-08-15
2000-08-29
2000-09-27
2001-08-20
2001-08-23
2001-09-10
2001-09-23
2002-08-12
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO
0 23.0 9.2 21 8.3 15 7.8 22.6 7.5 23 7.8 21 9.0 18 4.7 24 9.9
1 22.8 9.2 20 8.4 15 8.1 22.7 7.4 23 7.8 20 9.1 18 5.1 23 9.1
2 22.3 9.3 20 8.5 15 8.3 22.7 7.4 22 7.6 19 9.4 18 5.3 22 8.4
3 22.1 9.2 20 8.5 15 8.4 22.7 7.4 22 6.7 19 9.3 17 5.2 22 8.1
4 21.4 8.8 20 8.6 15 8.5 22.6 7.0 22 6.1 18 7.9 17 5.2 21 6.6
5 20.4 4.7 20 8.0 15 8.5 21.3 2.9 22 4.0 18 7.1 17 5.2 21 6.6
6 18.1 0.3 18 1.8 15 8.3 16.3 0.3 17 0.0 18 6.4 17 5.1 17 0.0
7 13.9 0.2 14 0.9 15 8.1 11.6 0.1 12 0.0 17 0.5 17 4.8 15 0.0
8 11.6 0.1 11 0.8 15 7.7 9.8 0.1 10 0.0 11 0.2 15 0.2 12 0.0
9 9.8 0.1 11 1.0 8.5 0.1 10 0.2 11 0.0

Recent temperature and dissolved oxygen profile plots

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