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Oceanographic Institution water levels in 1991
Annual rank46 / 88
vs. average-2.0 cm
Highest monthly peak1.79 mAugust 1991
Monthly mean vs. previous year
| Month | 1991 (cm) | 1990 (cm) | Diff | Peak (m) |
|---|---|---|---|---|
| Jan | -7.8 | -13.3 | 5.5 | 0.56 |
| Feb | -10.8 | -13.3 | 2.5 | 0.66 |
| Mar | 0.7 | -18.2 | 18.9 | 0.70 |
| Apr | -7.8 | -12.7 | 4.9 | 0.62 |
| May | -4.7 | -2.3 | -2.4 | 0.63 |
| Jun | 0.7 | -1.4 | 2.1 | 0.62 |
| Jul | 1.0 | -1.4 | 2.4 | 0.70 |
| Aug | -2.6 | 2.0 | -4.6 | 1.79 |
| Sep | -4.1 | 2.0 | -6.1 | 0.59 |
| Oct | 0.4 | 2.3 | -1.9 | 1.23 |
| Nov | -5.1 | -1.1 | -4.0 | 0.70 |
| Dec | -8.7 | -8.4 | -0.3 | 0.68 |
Nearby years (cm vs. average)
+0.9
+3.4
+0.0
-3.0
-3.4
-2.0
+1.4
+2.1
-2.8
-0.7
+6.6
Monthly means are relative to the station's mean sea level (MSL) datum.
About this page
The 1991 annual mean water level ranked 46 of 88 years (-2.0 cm vs. the period average).