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St. Petersburg water levels in 1999
Annual rank22 / 79
vs. average3.9 cm
Highest monthly peak0.95 mJanuary 1999
Monthly mean vs. previous year
| Month | 1999 (cm) | 1998 (cm) | Diff | Peak (m) |
|---|---|---|---|---|
| Jan | -4.9 | -6.1 | 1.2 | 0.95 |
| Feb | -0.1 | 2.2 | -2.3 | 0.54 |
| Mar | -2.1 | -4.6 | 2.5 | 0.54 |
| Apr | 1.6 | -1.1 | 2.7 | 0.64 |
| May | 4.5 | 4.4 | 0.1 | 0.55 |
| Jun | 1.4 | 0.6 | 0.8 | 0.57 |
| Jul | 5.4 | 0.4 | 5.0 | 0.54 |
| Aug | 10.9 | 3.4 | 7.5 | 0.60 |
| Sep | 18.9 | 18.2 | 0.7 | 0.71 |
| Oct | 8.2 | 5.0 | 3.2 | 0.49 |
| Nov | 0.6 | -1.7 | 2.3 | 0.57 |
| Dec | -6.3 | -5.4 | -0.9 | 0.49 |
Nearby years (cm vs. average)
+0.5
+3.7
-1.7
+1.5
+2.0
+3.9
+1.8
-1.8
+1.8
+4.9
+3.2
Monthly means are relative to the station's mean sea level (MSL) datum.
About this page
The 1999 annual mean water level ranked 22 of 79 years (3.9 cm vs. the period average).