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Anchorage, Knik Arm water levels in 2021
Annual rank20 / 46
vs. average0.4 cm
Highest monthly peak5.38 mNovember 2021
Monthly mean vs. previous year
| Month | 2021 (cm) | 2020 (cm) | Diff | Peak (m) |
|---|---|---|---|---|
| Jan | 11.8 | -5.8 | 17.6 | 5.02 |
| Feb | -8.8 | -7.3 | -1.5 | 4.58 |
| Mar | -14.0 | -28.2 | 14.2 | 5.28 |
| Apr | -26.5 | -22.6 | -3.9 | 5.08 |
| May | -10.5 | -9.1 | -1.4 | 5.26 |
| Jun | -2.0 | -3.0 | 1.0 | 5.03 |
| Jul | -2.5 | -0.4 | -2.1 | 4.81 |
| Aug | 1.3 | 6.7 | -5.4 | 4.60 |
| Sep | 11.4 | 8.6 | 2.8 | 4.91 |
| Oct | 16.2 | 1.8 | 14.4 | 5.36 |
| Nov | 6.6 | -5.6 | 12.2 | 5.38 |
Nearby years (cm vs. average)
+5.2
-6.7
-6.5
-3.8
-2.7
+0.4
-0.1
-1.2
-0.7
+1.4
Monthly means are relative to the station's mean sea level (MSL) datum.
About this page
The 2021 annual mean water level ranked 20 of 46 years (0.4 cm vs. the period average).