Washington State Parks and Recreation Commission

Park overview:

Potholes State Park is 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.

Want to support Washington State Parks? Get involved by joining a friends' group. For more information, visit the Friends' Group web page.

Park hours/updates:

Summer: 6:30 a.m. to dusk
Winter: 8 a.m. to dusk

The park is open year round for camping and day use.

Camping:
Check-in time, 2:30 p.m.
Check-out time, 1 p.m.
Quiet hours: 10 p.m. to 6:30 a.m.

Winter Schedule for all Washington State Parks

Current alerts:

The fish station has been repaired and is now up and running.

Metal detecting: By order of the Bureau of Reclamation, this park is closed to metal detecting indefinitely.

Agency information:

Don't move firewood: Please protect the Pacific Northwest from invasive species by obtaining or purchasing your firewood at or near your camping destination (within 50 miles). Firewood can carry insects and diseases that threaten the health of our western forests. You can make a difference by buying and burning your firewood locally. For more information, visit online at www.dontmovefirewood.org or the Washington Invasive Species Council website.

The Discover Pass now can be used on either of two vehicles!

Annual pass: $30
One-day pass: $10
(Transaction and dealer fees may apply)
A Discover Pass is required for motor-vehicle access to state parks and recreation lands managed by the Washington State Parks and Recreation Commission, the Washington Department of Fish and Wildlife and the Washington State Department of Natural Resources.

Exemptions: Your purchase of the Discover Pass supports recreation on state lands. However, the Discover Pass is not required if you are camping or renting overnight accommodations, for the duration of your stay at that state park. For additional exemptions and more information, please visit the Discover Pass website.