Data period: through 2017
Town | County | Delorme Map # | True Basin | Flushing Rate |
---|---|---|---|---|
HARTLAND | SOMERSET | 21 | 1 | 4.42 flushes/yr |
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 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1971 | 4.4 | 4.7 | 5.0 | 4 | ||||||||||||
1972 | 3.7 | 4.1 | 4.4 | 3 | ||||||||||||
1976 | 12.0 | 3.1 | 3.1 | 3.1 | 1 | 3.0 | 3.0 | 3.0 | ||||||||
1977 | 3.7 | 3.8 | 4.0 | 2 | ||||||||||||
1979 | 10 | 53 | 9.0 | 12.0 | 3.2 | 3.8 | 4.3 | 4 | 3.5 | 3.5 | 3.5 | |||||
1980 | 3.5 | 3.8 | 4.5 | 3 | ||||||||||||
1983 | 13 | 11.0 | 24.0 | 5.0 | 5.0 | 5.0 | 1 | 4.2 | 4.5 | 4.8 | ||||||
1987 | 15 | 41 | 7.0 | 17.0 | 4.5 | 4.5 | 4.5 | 1 | ||||||||
1989 | 8 | 1.8 | 1.8 | 1.8 | ||||||||||||
1995 | 13 | 10.0 | 9.5 | 4.8 | 5.2 | 5.5 | 2 | |||||||||
1996 | 12 | 42 | 8.0 | 13.0 | 3.6 | 3.6 | 3.6 | 1 | 5.0 | 5.0 | 5.0 | |||||
1997 | 4.7 | 4.7 | 4.7 | 1 | ||||||||||||
2000 | 13 | 6.9 | 9.5 | 11.5 | 3.4 | 4.7 | 5.8 | 3 | 5.5 | 6.0 | 6.4 | |||||
2001 | 12 | 6.9 | 8.0 | 11.0 | 5.2 | 5.2 | 5.2 | 1 | 3.4 | 3.4 | 3.4 | |||||
2002 | 14 | 6.7 | 7.5 | 11.0 | 4.4 | 4.9 | 5.8 | 5 | 2.3 | 3.0 | 3.8 | |||||
2003 | 11 | 54 | 7.0 | 11.0 | 12.0 | 4.0 | 4.9 | 6.8 | 6 | 3.2 | 8.2 | 13.2 | ||||
2004 | 15 | 6.7 | 9.0 | 13.0 | 4.7 | 5.3 | 5.5 | 4 | 2.9 | 5.3 | 7.7 | |||||
2005 | 13 | 38 | 6.6 | 15.5 | 3.6 | 4.3 | 5.0 | 5 | 3.9 | 4.2 | 4.6 | |||||
2006 | 14 | 7.2 | 11.5 | 3.7 | 4.5 | 5.3 | 7 | 3.4 | 4.2 | 5.0 | ||||||
2007 | 13 | 6.8 | 9.0 | 26.0 | 4.1 | 5.0 | 6.7 | 7 | 3.6 | 4.0 | 4.3 | |||||
2008 | 14 | 7.0 | 12.5 | 11.0 | 3.8 | 4.3 | 5.1 | 9 | 5.2 | 7.0 | 8.7 | |||||
2009 | 18 | 10.0 | 13.0 | 3.9 | 4.4 | 4.9 | 5 | 2.0 | 2.0 | 2.0 | ||||||
2010 | 14 | 8.2 | 13.0 | 4.0 | 5.4 | 6.8 | 8 | 3.0 | 3.4 | 4.2 | ||||||
2011 | 4.2 | 4.9 | 5.8 | 6 | ||||||||||||
2012 | 14 | 8.0 | 12.0 | 3.9 | 4.7 | 5.6 | 6 | 4.4 | 4.4 | 4.4 | ||||||
2013 | 8.0 | 11.0 | 3.9 | 4.7 | 5.2 | 7 | 4.3 | 4.3 | 4.3 | |||||||
2014 | 14 | 44 | 8.0 | 3.8 | 4.3 | 4.8 | 5 | 3.7 | 3.7 | 3.7 | ||||||
2015 | 16 | 43 | 6.0 | 11.0 | 3.8 | 4.6 | 6.0 | 6 | 4.5 | 4.5 | 4.5 | |||||
2016 | 20 | 16 | 52 | 7.3 | 7.0 | 14.0 | 3.6 | 4.7 | 5.9 | 6 | 1.7 | 1.7 | 1.7 | |||
2017 | 14 | 51 | 7.4 | 6.0 | 11.0 | 4.3 | 5.1 | 6.0 | 5 | 4.4 | 4.4 | 4.4 |
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 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
20 | 14 | 46 | 6.9 | 9.2 | 8 | 14 | 3.1 | 4.6 | 6.8 | 4.3 | 1.7 | 4.2 | 13 |
Depth (m) | TEMP | DO | TEMP | DO | TEMP | DO | TEMP | DO | TEMP | DO | TEMP | DO | TEMP | DO | TEMP | DO |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
0 | 24 | 8.4 | 23 | 8.7 | 26 | 8.1 | 24 | 8.4 | 25 | 8.4 | 28 | 8.3 | 23 | 8.2 | 21 | 8.8 |
1 | 24 | 8.5 | 23 | 8.6 | 26 | 8.1 | 23 | 8.5 | 25 | 8.4 | 26 | 8.5 | 23 | 8.2 | 21 | 8.8 |
2 | 23 | 8.5 | 23 | 8.6 | 26 | 8.1 | 22 | 8.3 | 24 | 8.4 | 25 | 8.6 | 23 | 8.1 | 20 | 8.8 |
3 | 23 | 8.5 | 22 | 8.4 | 25 | 8.0 | 22 | 8.2 | 24 | 8.0 | 24 | 8.8 | 23 | 8.1 | 20 | 8.5 |
4 | 23 | 8.3 | 22 | 8.1 | 24 | 7.5 | 21 | 7.2 | 23 | 6.5 | 23 | 8.1 | 23 | 8.1 | 19 | 8.3 |
5 | 23 | 7.4 | 22 | 8.1 | 23 | 5.9 | 21 | 6.9 | 22 | 4.8 | 23 | 7.3 | 23 | 8.0 | 19 | 8.2 |
6 | 22 | 4.7 | 22 | 8.2 | 17 | 2.2 | 16 | 2.6 | 20 | 2.3 | 22 | 5.1 | 23 | 8.0 | 19 | 7.6 |
7 | 19 | 1.8 | 21 | 7.9 | 15 | 2.1 | 15 | 2.7 | 16 | 2.1 | 19 | 1.6 | 20 | 3.5 | 18 | 7.1 |
8 | 17 | 0.6 | 17 | 0.4 | 13 | 2.2 | 13 | 2.8 | 14 | 2.4 | 17 | 1.2 | 16 | 1.8 | 18 | 5.8 |
9 | 15 | 0.4 | 15 | 0.4 | 13 | 2.3 | 12 | 3.4 | 12 | 3.3 | 15 | 1.4 | 14 | 2.1 | 16 | 2.6 |
10 | 14 | 0.4 | 14 | 0.4 | 13 | 2.4 | 12 | 3.4 | 12 | 3.3 | 14 | 1.5 | 14 | 1.8 | 13 | 0.6 |
11 | 14 | 0.2 | 14 | 0.3 | 12 | 2.3 | 11 | 3.3 | 11 | 3.2 | 13 | 1.0 | 13 | 1.6 | 12 | 0.5 |
12 | 13 | 0.1 | 14 | 0.3 | 12 | 1.9 | 11 | 3.2 | 11 | 3.2 | 13 | 0.8 | 13 | 1.5 | 12 | 0.4 |
13 | 13 | 0.1 | 13 | 0.3 | 12 | 1.6 | 11 | 2.9 | 11 | 3.2 | 13 | 0.7 | 13 | 0.9 | 11 | 0.3 |
14 | 13 | 0.1 | 13 | 0.3 | 12 | 1.4 | 10 | 2.4 | 11 | 2.9 | 12 | 0.5 | 12 | 0.8 | 11 | 0.1 |
15 | 10 | 2.3 | 11 | 2.8 | 11 | 0.1 |