Mudflats along the Willapa River in Raymond-
Mudflats along the Willapa River in Raymond
Raymond, Washington Washington State Fossil Sites and Collecting Localities (fossilspot.com) Willapa River (Wikipedia) 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.