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Baltimore, Fort McHenry water levels in 2009
Annual rank16 / 123
vs. average16.1 cm
Highest monthly peak0.88 mDecember 2009
Monthly mean vs. previous year
| Month | 2009 (cm) | 2008 (cm) | Diff | Peak (m) |
|---|---|---|---|---|
| Jan | -14.0 | -9.7 | -4.3 | 0.41 |
| Feb | -11.4 | -8.4 | -3.0 | 0.71 |
| Mar | -1.9 | 0.1 | -2.0 | 0.53 |
| Apr | 3.5 | 9.7 | -6.2 | 0.66 |
| May | 8.5 | 17.0 | -8.5 | 0.58 |
| Jun | 25.2 | 10.9 | 14.3 | 0.84 |
| Jul | 19.8 | 10.6 | 9.2 | 0.59 |
| Aug | 12.4 | 11.2 | 1.2 | 0.53 |
| Sep | 19.4 | 17.2 | 2.2 | 0.78 |
| Oct | 18.5 | 6.9 | 11.6 | 0.73 |
| Nov | 16.0 | -1.8 | 17.8 | 0.73 |
| Dec | -0.2 | -10.7 | 10.5 | 0.88 |
Nearby years (cm vs. average)
+11.1
+15.9
+13.2
+9.1
+12.5
+16.1
+16.8
+20.9
+18.3
+15.3
+16.5
Monthly means are relative to the station's mean sea level (MSL) datum.
About this page
The 2009 annual mean water level ranked 16 of 123 years (16.1 cm vs. the period average).