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Ketchikan water levels in 2011
Annual rank76 / 105
vs. average-2.0 cm
Highest monthly peak3.77 mSeptember 2011
Monthly mean vs. previous year
| Month | 2011 (cm) | 2010 (cm) | Diff | Peak (m) |
|---|---|---|---|---|
| Jan | -2.2 | 27.6 | -29.8 | 3.05 |
| Feb | -9.0 | 13.3 | -22.3 | 3.28 |
| Mar | 5.2 | 12.3 | -7.1 | 3.45 |
| Apr | -10.6 | 2.1 | -12.7 | 3.25 |
| May | -12.0 | -12.9 | 0.9 | 3.18 |
| Jun | -14.2 | -10.7 | -3.5 | 2.79 |
| Jul | -4.4 | -23.0 | 18.6 | 2.86 |
| Aug | -8.2 | -20.8 | 12.6 | 3.05 |
| Sep | 6.6 | -7.5 | 14.1 | 3.77 |
| Oct | 9.9 | 8.3 | 1.6 | 3.75 |
| Nov | 14.4 | 7.6 | 6.8 | 3.63 |
| Dec | -3.2 | 17.3 | -20.5 | 3.48 |
Nearby years (cm vs. average)
-0.9
+1.9
-2.1
-4.5
+1.4
-2.0
+0.1
-9.9
-4.9
-3.5
-1.9
Monthly means are relative to the station's mean sea level (MSL) datum.
About this page
The 2011 annual mean water level ranked 76 of 105 years (-2.0 cm vs. the period average).