Data period: through 2018
Town | County | Delorme Map # | True Basin | Flushing Rate | Elevation |
---|---|---|---|---|---|
HARTLAND | SOMERSET | 21 | 1 | 4.42 flushes/yr | 245 ft |
Maximum Depth | Average Depth | Surface Area | Lake Volume | Drainage Area |
---|---|---|---|---|
15 m (50 ft) |
4 m (15 ft) |
1,449 ha (3,582 ac) |
65,000,000 m3 (52,696 ac-ft) |
514 km2 (198 mi2) |
Graph Legend: Secchi symbols = average Secchi Disk Transparency Values; tick marks = maximum and minimum values for each year.
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 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1970 | 5.0 | 5.5 | 6.2 | 4 | ||||||||||||
1971 | 2.7 | 4.5 | 5.4 | 6 | ||||||||||||
1972 | 3.9 | 4.5 | 5.2 | 3 | ||||||||||||
1979 | 3.6 | 4.0 | 4.2 | 3 | ||||||||||||
1980 | 3.5 | 3.8 | 4.5 | 3 | ||||||||||||
1989 | 10 | 4.5 | 4.5 | 4.5 | 1 | |||||||||||
1995 | 10.5 | 5.2 | 5.2 | 5.3 | 2 | |||||||||||
2000 | 11 | 6.9 | 9.5 | 22 | 3.8 | 5.1 | 5.9 | 5 | 4.2 | 4.5 | 4.8 | |||||
2001 | 8.0 | 29 | 4.1 | 5.2 | 6.3 | 4 | 2.7 | 2.7 | 2.7 | |||||||
2002 | 14 | 6.7 | 8.5 | 12 | 3.9 | 4.8 | 5.4 | 6 | 2.2 | 3.1 | 4.0 | |||||
2003 | 10 | 58 | 6.9 | 9.0 | 17 | 4.0 | 4.6 | 5.5 | 7 | 3.1 | 5.0 | 6.8 | ||||
2004 | 15 | 6.7 | 12.0 | 20 | 4.2 | 5.3 | 6.5 | 3 | 2.3 | 4.1 | 5.9 | |||||
2005 | 13 | 44 | 6.6 | 10.0 | 12 | 3.8 | 4.3 | 4.9 | 4 | 4.7 | 4.8 | 4.8 | ||||
2006 | 14 | 7.2 | 11.5 | 16 | 4.4 | 5.0 | 5.6 | 5 | 2.6 | 4.0 | 5.4 | |||||
2007 | 15 | 7.1 | 8.5 | 14 | 5.1 | 5.2 | 5.5 | 3 | 3.1 | 3.4 | 3.8 | |||||
2008 | 7.0 | 18.0 | 16 | 4.0 | 4.7 | 5.4 | 2 | 2.7 | 4.4 | 6.2 | ||||||
2009 | 20 | 9.0 | 14 | 5.3 | 5.3 | 5.3 | 1 | 2.5 | 2.5 | 2.5 | ||||||
2010 | 7.5 | 43 | 5.9 | 6.1 | 6.3 | 2 | 3.1 | 4.0 | 4.9 | |||||||
2012 | 17 | 11.0 | 14 | 4.4 | 4.4 | 4.4 | 1 | 4.6 | 4.6 | 4.6 | ||||||
2013 | 5.3 | 5.3 | 5.3 | 1 | ||||||||||||
2014 | 7.0 | 11 | 3.9 | 3.9 | 4.0 | 1 | 3.7 | 3.7 | 3.7 | |||||||
2015 | 49 | 6.0 | 18 | 5.8 | 5.8 | 5.8 | 1 | 4.0 | 4.0 | 4.0 | ||||||
2016 | 6.0 | 33 | 5.8 | 5.8 | 5.8 | 1 | 3.2 | 3.2 | 3.2 | |||||||
2017 | 57 | 7.4 | 7.0 | 38 | 6.0 | 6.0 | 6.0 | 1 | 2.6 | 2.6 | 2.6 | |||||
2018 | 14 | 8.0 | 25 | 6.5 | 6.5 | 6.5 | 1 | 2.0 | 2.0 | 2.0 |
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 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
14 | 52 | 6.9 | 9.3 | 21 | 10 | 2.7 | 5 | 6.5 | 2.8 | 2 | 3.7 | 6.8 |
Depth (m) | TEMP | DO | TEMP | DO | TEMP | DO | TEMP | DO | TEMP | DO | TEMP | DO | TEMP | DO | TEMP | DO |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
0 | 26 | 8.8 | 25 | 8.3 | 27 | 8.0 | 27 | 8.2 | 29 | 8.3 | 24 | 8.3 | 23 | 8.4 | 28 | 8.0 |
1 | 25 | 8.8 | 25 | 8.4 | 27 | 8.0 | 26 | 8.2 | 28 | 8.6 | 24 | 8.3 | 21 | 8.8 | 28 | 8.0 |
2 | 24 | 8.6 | 24 | 8.4 | 27 | 8.0 | 23 | 7.5 | 27 | 8.5 | 24 | 8.3 | 20 | 8.8 | 28 | 8.0 |
3 | 22 | 7.7 | 24 | 8.4 | 25 | 7.6 | 23 | 6.2 | 25 | 8.8 | 24 | 8.3 | 20 | 8.5 | 27 | 8.1 |
4 | 22 | 7.1 | 24 | 8.3 | 24 | 6.2 | 22 | 4.5 | 24 | 7.8 | 24 | 8.3 | 20 | 8.4 | 26 | 8.0 |
5 | 21 | 5.8 | 24 | 8.1 | 22 | 4.3 | 22 | 3.6 | 23 | 6.6 | 24 | 8.3 | 20 | 8.1 | 26 | 7.7 |
6 | 20 | 4.0 | 23 | 7.1 | 22 | 3.6 | 20 | 1.3 | 23 | 6.0 | 23 | 8.2 | 19 | 7.8 | 24 | 3.8 |
7 | 18 | 1.9 | 23 | 6.8 | 18 | 0.2 | 20 | 0.1 | 22 | 3.7 | 23 | 8.1 | 19 | 7.5 | 22 | 0.7 |
8 | 17 | 1.3 | 18 | 0.1 | 14 | 0.2 | 18 | 0.0 | 18 | 0.0 | 20 | 0.4 | 18 | 6.8 | 20 | 0.1 |
9 | 16 | 0.2 | 15 | 0.1 | 13 | 0.1 | 14 | 0.0 | 14 | 0.0 | 15 | 0.1 | 17 | 3.2 | 14 | 0.1 |
10 | 15 | 0.0 | 14 | 0.1 | 13 | 0.1 | 12 | 0.0 | 12 | 0.0 | 13 | 0.0 | 13 | 0.1 | 12 | 0.1 |
11 | 14 | 0.0 | 13 | 0.1 | 12 | 0.1 | 12 | 0.0 | 11 | 0.0 | 13 | 0.0 | 12 | 0.1 | 11 | 0.1 |
12 | 14 | 0.0 | 13 | 0.1 | 12 | 0.1 | 12 | 0.0 | 11 | 0.0 | 12 | 0.0 | 12 | 0.1 | 11 | 0.1 |