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Baltimore, Fort McHenry water levels in 1990
Annual rank45 / 123
vs. average4.5 cm
Highest monthly peak0.76 mOctober 1990
Monthly mean vs. previous year
| Month | 1990 (cm) | 1989 (cm) | Diff | Peak (m) |
|---|---|---|---|---|
| Jan | -17.8 | -16.3 | -1.5 | 0.36 |
| Feb | -14.5 | -20.0 | 5.5 | – |
| Mar | -12.6 | -10.8 | -1.8 | – |
| Apr | -7.8 | -8.1 | 0.3 | 0.49 |
| May | 1.7 | 0.5 | 1.2 | 0.72 |
| Jun | 2.3 | 3.8 | -1.5 | 0.55 |
| Jul | 3.5 | 5.3 | -1.8 | 0.54 |
| Aug | 8.7 | 5.9 | 2.8 | 0.56 |
| Sep | 6.9 | 9.3 | -2.4 | 0.64 |
| Oct | 3.8 | 1.7 | 2.1 | 0.76 |
| Nov | -8.7 | -9.6 | 0.9 | 0.62 |
| Dec | -9.6 | -27.3 | 17.7 | 0.69 |
Nearby years (cm vs. average)
+4.9
+4.6
+6.6
+2.9
+2.7
+4.5
+7.5
+8.7
+11.0
+6.4
+8.3
Monthly means are relative to the station's mean sea level (MSL) datum.
About this page
The 1990 annual mean water level ranked 45 of 123 years (4.5 cm vs. the period average).