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Charleston water levels in 1990
Annual rank48 / 54
vs. average-4.6 cm
Highest monthly peak1.70 mJanuary 1990
Monthly mean vs. previous year
| Month | 1990 (cm) | 1989 (cm) | Diff | Peak (m) |
|---|---|---|---|---|
| Jan | 3.6 | -8.9 | 12.5 | 1.70 |
| Feb | 0.3 | -9.8 | 10.1 | 1.41 |
| Mar | -6.7 | 7.6 | -14.3 | 1.31 |
| Apr | -8.9 | -4.9 | -4.0 | 1.48 |
| May | -11.0 | -11.6 | 0.6 | 1.58 |
| Jun | -9.2 | -14.7 | 5.5 | 1.48 |
| Jul | -7.7 | -9.2 | 1.5 | 1.43 |
| Aug | -3.1 | -12.5 | 9.4 | 1.32 |
| Sep | 0.3 | -7.7 | 8.0 | 1.30 |
| Oct | -5.5 | -2.9 | -2.6 | 1.30 |
| Nov | -0.3 | -3.4 | 3.1 | 1.57 |
| Dec | -2.8 | -5.5 | 2.7 | 1.60 |
Nearby years (cm vs. average)
-7.2
-0.6
-1.0
-7.0
-7.3
-4.6
+4.4
+3.0
-1.1
+4.7
Monthly means are relative to the station's mean sea level (MSL) datum.
About this page
The 1990 annual mean water level ranked 48 of 54 years (-4.6 cm vs. the period average).