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Apra Harbor, Guam water levels in 2009
Annual rank11 / 73
vs. average10.2 cm
Highest monthly peak0.59 mMarch 2009
Monthly mean vs. previous year
| Month | 2009 (cm) | 2008 (cm) | Diff | Peak (m) |
|---|---|---|---|---|
| Jan | 18.0 | 13.7 | 4.3 | 0.57 |
| Feb | 21.1 | 19.6 | 1.5 | 0.58 |
| Mar | 19.6 | 22.4 | -2.8 | 0.59 |
| Apr | 18.5 | 23.5 | -5.0 | 0.56 |
| May | 16.8 | 23.0 | -6.2 | 0.53 |
| Jun | 17.0 | 25.4 | -8.4 | 0.57 |
| Jul | 19.4 | 22.3 | -2.9 | 0.58 |
| Aug | 13.5 | 23.6 | -10.1 | 0.53 |
| Sep | 10.6 | 21.4 | -10.8 | 0.47 |
| Oct | 4.6 | 19.4 | -14.8 | 0.44 |
| Nov | 0.9 | 18.5 | -17.6 | 0.40 |
| Dec | 1.6 | 17.8 | -16.2 | 0.46 |
Nearby years (cm vs. average)
+5.3
+10.9
+8.8
+17.6
+10.2
+7.7
+14.7
+14.8
+5.9
Monthly means are relative to the station's mean sea level (MSL) datum.
About this page
The 2009 annual mean water level ranked 11 of 73 years (10.2 cm vs. the period average).