| Willapa River | |
| Map Size: | 300 |
| Pushpin Map: | USA Washington |
| Pushpin Map Size: | 300 |
| Pushpin Map Caption: | Location of the mouth of the Willapa River in Washington |
| Subdivision Type1: | Country |
| Subdivision Name1: | United States |
| Subdivision Type2: | State |
| Subdivision Name2: | Washington |
| Subdivision Type4: | County |
| Subdivision Name4: | Pacific |
| Length: | 20miles |
| Discharge1 Location: | river mile 17.8, near Willapa, WA[1] |
| Discharge1 Min: | 14cuft/s |
| Discharge1 Avg: | 636cuft/s[2] |
| Discharge1 Max: | 12800cuft/s |
| Source1: | Willapa Hills |
| Source1 Location: | Washington |
| Source1 Coordinates: | 46.4972°N -123.4131°W |
| Mouth: | Willapa Bay |
| Mouth Location: | Washington |
| Mouth Coordinates: | 46.7075°N -123.8506°W |
| Mouth Elevation: | 0feet |
The Willapa River is a river on the Pacific coast of southwestern Washington in the United States, approximately 20miles 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 25miles 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]
. Edward S. Curtis . The North American Indian. Volume 9 - The Salishan tribes of the coast. The Chimakum and the Quilliute. The Willapa. . 978-0-7426-9809-3 . 141–142 .