Moses Lake Sand Dunes

Moses Lake, WA

Managed by Grant County, Washington

Vehicles allowed

SxSATVDirt Bike4x4SandcarBuggy

Season

The dunes are open year-round; the Mud Flats are open July 1 through October 1 only (the ORV Unit calls the Yellow Zone closed October 1 through June 30).Source: Grant County, Off-Roading tourism page and Grant County Sheriff's Office, Off-Road Vehicle Unit · Oct 10, 2026

Closures

Closures: not checked yet. Check with Grant County, Washington

Official map

Desert Unit map, Yellow ZoneWashington Department of Fish and Wildlife · Checked Oct 15, 2026

Desert Unit mapWashington Department of Fish and Wildlife · Checked Oct 11, 2026