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Charleston (Customhouse Wharf) water levels in 1999
Annual rank15 / 107
vs. average12.9 cm
Highest monthly peak1.49 mMay 1999
Monthly mean vs. previous year
| Month | 1999 (cm) | 1998 (cm) | Diff | Peak (m) |
|---|---|---|---|---|
| Jan | -5.8 | -5.5 | -0.3 | 1.40 |
| Feb | 7.6 | 12.1 | -4.5 | 1.36 |
| Mar | -2.7 | -4.7 | 2.0 | 1.10 |
| Apr | 0.2 | -2.0 | 2.2 | 1.29 |
| May | 9.0 | 7.7 | 1.3 | 1.49 |
| Jun | 5.8 | -5.5 | 11.3 | 1.43 |
| Jul | -0.7 | -7.4 | 6.7 | 1.36 |
| Aug | 12.2 | -0.2 | 12.4 | 1.38 |
| Sep | 25.4 | 5.2 | 20.2 | 1.47 |
| Oct | 23.3 | 5.6 | 17.7 | 1.24 |
| Nov | 6.5 | -3.1 | 9.6 | 1.43 |
| Dec | 1.2 | -3.3 | 4.5 | 1.33 |
Nearby years (cm vs. average)
+6.1
+11.3
+2.9
+8.8
+6.0
+12.9
+9.8
+6.4
+8.0
+6.0
+4.4
Monthly means are relative to the station's mean sea level (MSL) datum.
About this page
The 1999 annual mean water level ranked 15 of 107 years (12.9 cm vs. the period average).