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Sand Point, Popof Island water levels in 2009
Annual rank33 / 50
vs. average-3.0 cm
Highest monthly peak1.88 mNovember 2009
Monthly mean vs. previous year
| Month | 2009 (cm) | 2008 (cm) | Diff | Peak (m) |
|---|---|---|---|---|
| Jan | 7.0 | 0.6 | 6.4 | 1.80 |
| Feb | -17.5 | 12.4 | -29.9 | 1.32 |
| Mar | -14.5 | 0.3 | -14.8 | 1.44 |
| Apr | -17.4 | -22.5 | 5.1 | 1.32 |
| May | -18.9 | -7.0 | -11.9 | 1.35 |
| Jun | -9.1 | -9.4 | 0.3 | 1.48 |
| Jul | -8.3 | -3.6 | -4.7 | 1.72 |
| Aug | -4.2 | 3.5 | -7.7 | 1.22 |
| Sep | 14.1 | 5.0 | 9.1 | 1.59 |
| Oct | 16.6 | 7.6 | 9.0 | 1.80 |
| Nov | 19.7 | 13.1 | 6.6 | 1.88 |
| Dec | 21.0 | -2.0 | 23.0 | 1.85 |
Nearby years (cm vs. average)
+2.0
-0.8
-3.3
-2.2
-3.0
+2.5
-3.3
-1.4
-5.7
+6.8
Monthly means are relative to the station's mean sea level (MSL) datum.
About this page
The 2009 annual mean water level ranked 33 of 50 years (-3.0 cm vs. the period average).