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Charleston (Customhouse Wharf) water levels in 1990
Annual rank46 / 107
vs. average2.8 cm
Highest monthly peak1.37 mMay 1990
Monthly mean vs. previous year
| Month | 1990 (cm) | 1989 (cm) | Diff | Peak (m) |
|---|---|---|---|---|
| Jan | -24.6 | -10.5 | -14.1 | 1.09 |
| Feb | -17.5 | -13.9 | -3.6 | 1.00 |
| Mar | -4.1 | -1.7 | -2.4 | 1.27 |
| Apr | -9.6 | -9.0 | -0.6 | 1.05 |
| May | -6.3 | -6.3 | 0.0 | 1.37 |
| Jun | -0.2 | -12.4 | 12.2 | 1.21 |
| Jul | -3.2 | -8.7 | 5.5 | 1.04 |
| Aug | 2.6 | -0.8 | 3.4 | – |
| Sep | 11.7 | 11.9 | -0.2 | – |
| Oct | 11.1 | 7.8 | 3.3 | 1.29 |
| Nov | 5.0 | -8.7 | 13.7 | – |
| Dec | -4.7 | -14.5 | 9.8 | – |
Nearby years (cm vs. average)
+4.2
+5.5
+3.5
+0.0
+0.5
+2.8
+8.9
+7.8
+7.2
+6.1
+11.3
Monthly means are relative to the station's mean sea level (MSL) datum.
About this page
The 1990 annual mean water level ranked 46 of 107 years (2.8 cm vs. the period average).