Data period: through 2018
Town | County | Delorme Map # | True Basin | Flushing Rate | Elevation |
---|---|---|---|---|---|
HERMON | PENOBSCOT | 22 | 1 | 31.09 flushes/yr | 121 ft |
Maximum Depth | Average Depth | Surface Area | Lake Volume | Drainage Area |
---|---|---|---|---|
5 m (16 ft) |
3 m (10 ft) |
179 ha (442 ac) |
5,142,389 m3 (4,169 ac-ft) |
243 km2 (94 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 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1980 | 48 | 0.80 | 1.7 | 2.4 | 6 | |||||||||||
1981 | 28 | 67 | 25 | 1.50 | 1.9 | 2.6 | 6 | 3.4 | 8.8 | 24.1 | ||||||
1984 | 27 | 35 | 1.80 | 2.5 | 2.8 | 6 | 19.1 | 19.1 | 19.1 | |||||||
1985 | 30 | 75 | 36 | 1.00 | 2.0 | 2.8 | 6 | |||||||||
1986 | 1.40 | 1.8 | 2.5 | 6 | ||||||||||||
1987 | 2.20 | 2.6 | 3.7 | 6 | ||||||||||||
1988 | 2.20 | 2.6 | 3.1 | 6 | ||||||||||||
1989 | 1.70 | 2.1 | 2.4 | 6 | ||||||||||||
1990 | 2.00 | 2.4 | 2.7 | 6 | ||||||||||||
1991 | 24 | 66 | 6.8 | 39 | 1.80 | 2.3 | 3.0 | 6 | 15.1 | 15.1 | 15.1 | |||||
1992 | 2.70 | 3.0 | 3.4 | 2 | ||||||||||||
1998 | 30 | 99 | 33 | 30 | 1.20 | 2.0 | 2.6 | 6 | 26.0 | 26.0 | 26.0 | |||||
1999 | 1.10 | 1.8 | 3.0 | 5 | ||||||||||||
2000 | 22 | 81 | 23 | 2.05 | 2.6 | 3.5 | 7 | 4.5 | 6.4 | 8.4 | ||||||
2001 | 1.50 | 2.2 | 3.1 | 6 | ||||||||||||
2002 | 1.45 | 2.1 | 3.0 | 6 | ||||||||||||
2003 | 50 | 34 | 112 | 7 | 37 | 0.88 | 1.7 | 2.6 | 6 | 60.0 | 60.0 | 60.0 | ||||
2004 | 61 | 30 | 105 | 30 | 34 | 31 | 1.30 | 2.1 | 2.8 | 11 | 10.1 | 15.8 | 21.8 | |||
2005 | 29 | 18 | 0.60 | 1.8 | 2.9 | 10 | 20.0 | 20.0 | 20.0 | |||||||
2006 | 72 | 21 | 85 | 7.4 | 31 | 32 | 1.70 | 2.3 | 3.0 | 8 | 16.0 | 16.0 | 16.0 | |||
2007 | 1.05 | 2.2 | 3.4 | 6 | ||||||||||||
2008 | 1.40 | 2.1 | 3.1 | 6 | ||||||||||||
2009 | 41 | 48 | 1.70 | 2.2 | 3.1 | 7 | 28.0 | 28.0 | 28.0 | |||||||
2010 | 33 | 1.35 | 2.2 | 3.6 | 6 | 34.0 | 34.0 | 34.0 | ||||||||
2011 | 1.92 | 2.7 | 3.4 | 6 | ||||||||||||
2012 | 1.80 | 2.4 | 3.0 | 6 | ||||||||||||
2013 | 2.05 | 2.6 | 3.4 | 6 | ||||||||||||
2014 | 58 | 34 | 102 | 7.7 | 40 | 1.75 | 2.9 | 3.6 | 4 | 18.0 | 18.0 | 18.0 | ||||
2015 | 1.67 | 2.5 | 3.9 | 6 | ||||||||||||
2016 | 2.15 | 3.1 | 4.0 | 6 | ||||||||||||
2017 | 0.80 | 1.8 | 2.8 | 6 | ||||||||||||
2018 | 25 | 30 | 110 | 7.7 | 25 | 2.50 | 2.8 | 3.4 | 8 | 7.0 | 7.0 | 7.0 |
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 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
53 | 28 | 90 | 7.2 | 32 | 34 | 36 | 18 | 0.6 | 2.3 | 4 | 6.2 | 3.4 | 21 | 60 |
Depth (m) | TEMP | DO | TEMP | DO | TEMP | DO | TEMP | DO | TEMP | DO | TEMP | DO | TEMP | DO | TEMP | DO |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
0 | 22 | 8.7 | 25 | 9.1 | 23 | 8.9 | 25 | 7.5 | 25 | 8.0 | 25 | 9.7 | 25 | 10.0 | 25 | 8.8 |
1 | 22 | 8.8 | 25 | 9.1 | 22 | 9.0 | 25 | 7.4 | 25 | 8.0 | 25 | 9.5 | 24 | 10.2 | 25 | 8.8 |
2 | 22 | 8.8 | 25 | 8.9 | 22 | 7.9 | 24 | 6.3 | 25 | 7.9 | 25 | 9.1 | 23 | 7.6 | 25 | 8.7 |
3 | 22 | 8.8 | 24 | 5.8 | 21 | 3.4 | 23 | 6.1 | 24 | 0.6 | 23 | 7.1 | 22 | 5.4 | 25 | 8.6 |
4 | 22 | 8.7 | 22 | 0.3 | 21 | 2.7 | 23 | 1.6 | 19 | 0.5 | 22 | 3.8 | 21 | 0.1 | 24 | 6.8 |
5 | 20 | 0.2 | 20 | 0.9 | 19 | 0.2 | 18 | 0.5 | 24 | 4.7 |