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Lewisetta, Va. water levels in 1999
Annual rank25 / 53
vs. average0.7 cm
Highest monthly peak0.84 mSeptember 1999
Monthly mean vs. previous year
| Month | 1999 (cm) | 1998 (cm) | Diff | Peak (m) |
|---|---|---|---|---|
| Jan | -6.8 | 8.7 | -15.5 | 0.58 |
| Feb | 6.5 | 25.6 | -19.1 | 0.43 |
| Mar | -3.4 | 5.8 | -9.2 | 0.55 |
| Apr | 7.7 | 13.8 | -6.1 | 0.53 |
| May | 12.6 | 20.2 | -7.6 | 0.63 |
| Jun | 8.7 | 11.0 | -2.3 | 0.55 |
| Jul | 8.1 | 10.0 | -1.9 | 0.57 |
| Aug | 14.5 | 15.7 | -1.2 | 0.68 |
| Sep | 18.7 | 14.3 | 4.4 | 0.84 |
| Oct | 6.9 | 6.2 | 0.7 | 0.51 |
| Nov | -1.1 | 0.4 | -1.5 | 0.50 |
| Dec | -4.8 | -3.0 | -1.8 | 0.45 |
Nearby years (cm vs. average)
-9.6
-7.0
-0.2
+1.2
+5.8
+0.7
-3.4
-2.5
-4.6
+1.8
+1.5
Monthly means are relative to the station's mean sea level (MSL) datum.
About this page
The 1999 annual mean water level ranked 25 of 53 years (0.7 cm vs. the period average).