State Park · Washington

Seaquest State Park

Location: Cowlitz County, Washington
Nearest town: 4.6 miles east of Castle Rock
Type: State Park

About Seaquest State Park

Silver Lake forms the eastern edge of this park, which sits on the lake's western flank. The land protects public recreation space tied to the lake shoreline. It also holds the Mount St. Helens Visitor Center at Silver Lake, giving the park a direct connection to the volcano's history and landscape beyond the water itself.

Hours, fees, camping, reservations and closures are set by the park and change often. Check the official park site before you go.

Getting there

Seaquest State Park is in Cowlitz County, Washington, 4.6 miles east of Castle Rock. The Directions button takes you to the park's mapped location; the entrance may be elsewhere, so check the official site for the address to use.

State parks near Seaquest State Park

Within 60 miles, closest first, straight-line. All 140 in Washington →

Towns near Seaquest State Park

State parks near Longview, State parks near Centralia, State parks near Battle Ground

Facts from Wikidata, checked September 25, 2026. Distances are straight-line.