Willapa River

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Willapa River
Country United States
State Washington
County Pacific
Source Willapa Hills
 - coordinates 46°29′50″N 123°24′47″W / 46.49722°N 123.41306°W / 46.49722; -123.41306 [1]
Mouth Willapa Bay
 - elevation 0 ft (0 m) [1]
 - coordinates 46°42′27″N 123°51′2″W / 46.70750°N 123.85056°W / 46.70750; -123.85056Coordinates: 46°42′27″N 123°51′2″W / 46.70750°N 123.85056°W / 46.70750; -123.85056 [1]
Length 20 mi (32 km)
Discharge for river mile 17.8, near Willapa, WA
 - average 636 cu ft/s (18.0 m3/s) [2]
 - max 12,800 cu ft/s (362.5 m3/s)
 - min 14 cu ft/s (0.4 m3/s)
Location of the mouth of the Willapa River in Washington

The Willapa River is a river on the Pacific coast of southwestern Washington in the United States, approximately 20 miles (32 km) long. It drains an area of low hills and a coastal plain into Willapa Bay, a large estuary north of the mouth of the Columbia River.

The river rises in the Willapa Hills in southeastern Pacific County, approximately 25 miles (40 km) west of Chehalis. It flows northwest in a winding course past the small communities of Willapa and Raymond. It enters the northwest end of Willapa Bay at South Bend.


The name is that of the Willapa people, an Athapaskan-speaking people, now extinct, who occupied the valley of the river and also the prairies between the headwaters of the Chehalis and Cowlitz Rivers.[3] River has miocene fossils.

See also[edit]