The Washougal River is a 33-mile (53 km) tributary of the Columbia River in the U.S. state of Washington. Its headwaters and upper 21 miles (34 km) are in Skamania County in the Gifford Pinchot National Forest, and its lower 12 miles (19 km) are in Clark County. The river, which meets the Columbia near the cities of Washougal and Camas, is a popular stream for fishing, swimming, and boating.
Explorers Meriwether Lewis and William Clark referred to the Washougal River as the "Seal River." The name Washougal comes from the Cascades Chinook placename [wasiixwal] or [wasuxal], meaning "rushing water". It has been suggested that D. B. Cooper, who hijacked a Boeing 727 in 1971 then parachuted from the plane with ransom money, may have landed in the Washougal River basin.