Chehalis River at Porter
Grays Harbor County, Washington
The past week
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What floods at each level
- 52 ft
the Chehalis River in Grays Harbor will cause major near record flooding from Oakville downstream to Grays Harbor. Deep and swift flood waters will inundate numerous farms and roads...including SR 12. High tidal levels at Aberdeen will worsen flooding along the lower reaches. Flooding will occur all along the river including headwaters...tributaries...and other streams within and near the Chehalis River Basin.
- 50 ft
feet...the Chehalis River in Grays Harbor will flood numerous farms and roads including SR 12. High tidal levels at Aberdeen will worsen flooding along the lower reaches.
- 49 ft
the Chehalis River in Grays Harbor will flood pasture lands and many roads...including SR 12 between Oakville and Rochester. High tidal levels at Aberdeen will worsen flooding along the lower reaches.
- 48 ft
the Chehalis River in Grays Harbor will flood low pasture lands and some roads. High tidal levels at Aberdeen will worsen flooding along the lower reaches.
- 46 ft
the Chehalis River in Grays Harbor County will locally spill over its banks with shallow water on several roads.
Highest crests on record
| Date | Level | Flow |
|---|---|---|
| Dec 4, 2007 | 53.17 ft | 10,200 cfs |
| Jan 8, 2022 | 52.01 ft | 61,896 cfs |
| Dec 12, 2025 | 49.64 ft | 33,994 cfs |
More on Chehalis River
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