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St. Petersburg water levels in 1991
Annual rank27 / 79
vs. average2.0 cm
Highest monthly peak0.77 mMarch 1991
Monthly mean vs. previous year
| Month | 1991 (cm) | 1990 (cm) | Diff | Peak (m) |
|---|---|---|---|---|
| Jan | -1.9 | -15.7 | 13.8 | 0.70 |
| Feb | -12.0 | -12.3 | 0.3 | 0.52 |
| Mar | -4.1 | -0.1 | -4.0 | 0.77 |
| Apr | 0.8 | -3.5 | 4.3 | 0.56 |
| May | 8.1 | 6.6 | 1.5 | 0.65 |
| Jun | 3.2 | 1.7 | 1.5 | 0.62 |
| Jul | 7.2 | 4.8 | 2.4 | 0.63 |
| Aug | 6.9 | 9.0 | -2.1 | 0.58 |
| Sep | 10.9 | 5.7 | 5.2 | 0.57 |
| Oct | 7.5 | 6.3 | 1.2 | 0.60 |
| Nov | -0.4 | 4.8 | -5.2 | 0.55 |
| Dec | -11.4 | -5.9 | -5.5 | 0.51 |
Nearby years (cm vs. average)
+0.9
+0.7
-2.0
+0.7
+0.9
+2.0
-0.0
-0.8
+0.5
+3.7
-1.7
Monthly means are relative to the station's mean sea level (MSL) datum.
About this page
The 1991 annual mean water level ranked 27 of 79 years (2.0 cm vs. the period average).