Driving Directions
Located 17 miles southwest of Moses Lake, Wash., just east of the Cascades in Grant County.
Park address:
6762 Highway 262 East
Othello, WA 99344
From I-90:
Take exit 179 at Moses Lake and follow signs to park.
From the south:
Take Hwy. 17 and turn west on Hwy. 262 (O'Sullivan Dam Rd.). Or take Hwy. 26 and turn east onto Hwy. 262 (O'Sullivan Dam Rd.). Each direction is well signed.
Park Maps
To view campsites and facilities reservable at this park, visit the
reservation system and campsite maps.
Potholes downloadable pdf map #1
List of all downloadable Washington State Park
maps.