Potholes State Park 
Off Interstate 90
Moses Lake, WA 98837
360-902-8844
http://parks.state.wa.us/568/Potholes
State Park: Birding, Camp, Hike, Picnic, RV, Walk, Water Sports
A 640-acre camping park with 6,000 feet of freshwater shoreline on Potholes Reservoir (also known as O’Sullivan Reservoir). Potholes Reservoir is often confused with the Pothole Lakes themselves, which are a 30- to 45-minute drive from the park. The terrain is desert with freshwater marshes.