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Washington, Washington Channel, D.c. water levels in 2021
Annual rank7 / 94
vs. average17.1 cm
Highest monthly peak1.69 mOctober 2021
Monthly mean vs. previous year
| Month | 2021 (cm) | 2020 (cm) | Diff | Peak (m) |
|---|---|---|---|---|
| Jan | 6.0 | 4.0 | 2.0 | 0.83 |
| Feb | 7.5 | 6.3 | 1.2 | 0.87 |
| Mar | 8.1 | 11.6 | -3.5 | 0.82 |
| Apr | 12.5 | 19.1 | -6.6 | 1.01 |
| May | 5.5 | 18.6 | -13.1 | 0.87 |
| Jun | 17.0 | 22.7 | -5.7 | 0.93 |
| Jul | 14.4 | 21.8 | -7.4 | 0.80 |
| Aug | 20.1 | 22.3 | -2.2 | 0.92 |
| Sep | 26.7 | 26.9 | -0.2 | 1.13 |
| Oct | 28.4 | 18.6 | 9.8 | 1.69 |
| Nov | 8.3 | 7.5 | 0.8 | 0.87 |
| Dec | 1.0 | 8.4 | -7.4 | 0.82 |
Nearby years (cm vs. average)
+12.5
+13.8
+23.2
+22.9
+19.8
+17.1
+15.9
+21.8
+26.1
+16.7
Monthly means are relative to the station's mean sea level (MSL) datum.
About this page
The 2021 annual mean water level ranked 7 of 94 years (17.1 cm vs. the period average).