Overview of Moses Lake Mud Flats and Sand Dunes
Latitude / Longitude: 47.114446, -119.299828
Managed by: Grant County
Camping: Free primitive camping
Location: Central Washington
- Dispersed camping with no amenities, but there are restrooms available in the dune area.
- The sheriff says that camping could potentially be restricted on Memorial, July 4th, and Labor Day weekends, but there is plenty of room, so it’s unlikely you would get turned away.
- No reservations – first come, first serve.
- The area around Sand Dune Rd. from the third restroom to Powerline Rd. is private property so it is also closed to camping.
- You’re not allowed to drive any motorized vehicle within 90 feet of the lake’s shoreline.
From Moses Lake
Travel South on S. Division St. / S. Division changes name to Potato Hill Rd NE when it crosses I-90
Potato Hill Rd turns to the right becoming Sand Dune Rd
Follow Sand Dune Rd to the staging area
Moses Lake Sand Dunes
Thousands of acres of dunes with 3,000 acres open for off-road use.
Of the 3,000 acres of OHV dunes, half of this motorized use area is closed from October 1st – July 1st for the nesting of migratory birds. This is the mud flat section which then opens July 1st – October 1st . That leaves about 1,500 acres open year round.
A third of the total acreage is set aside for hiking and non-motorized use.
This is a beautiful large sand dune area with soft sand and many rolling dune hills; set directly on the shores of Moses Lake. It makes for a great summer get away with fun for the whole family. Well worth the trip!
- Due to excessive use there may be restrictions on major holidays such as Memorial Day, 4th of July and Labor Day weekends.
- Flags required (not for motorcycles).
- All OHVs are required to be registered.
- If your state does not have ATV registration, you can purchase a 60 day temporary pass for off-road use for $15.75.
Washington ATV / OHV Registration & Licensing
- Washington state requires all OHVs to be registered.
- Out of state registration is legal and accepted if the other state grants reciprocity to Washington.
- Non-residents can purchase a 60 day temporary ORV Use permit for $15.75.
- All ATVs / OHVs must be registered.
- Off highway vehicles must have a current license plate or ORV Tag.
- Residents can also purchase a 60 day temporary ORV Use permit for $15.75.
Moses Lake ATV/OHV Use Area Rules
- Current state registration and tabs/stickers are required on all OHVs.
- Alcohol use, possession and/or consumption is prohibited.
- No child under 16 years of age may operate an ORV without adult supervision and the adult must possess a valid license to operate a motor vehicle.
- Spark arrestors are required on all vehicle in the Moses Lake Sand Dunes. “Glass-pac” type mufflers do not have spark arresting capabilities. Stock mufflers are acceptable.
- A working muffling system (emitting no more than 105 decibels at 20″) with a “USFS Approved Spark Arrester” that is stamped into the metal on motorcycle mufflers and is clearly visible
- Watch for and obey all property and zone signs.
- You must wear an approved safety helmet on motorcycles and ATVs.
- Whip flags are required. Must be 108 inches from the ground and red or orange.
- No burning of wood pallet, wood with metal fasteners or tires.
Washington State ORV Laws
- Washington state does allow for All Terrain Vehicles to be licensed as street legal providing they meet certain safety requirements. Washington State Street Legal Requirements
- No child under 16 years of age may operate an ORV without direct adult supervision and the adult must possess a valid license to operate a motor vehicle.
It is a criminal offense to:
- Operate an ORV while under the influence of intoxicating liquor and/or drugs.
- Operate an ORV in such a manner as to endanger human life.
- Hunt, run down, or harass any wildlife from an ORV.
- Fail to obey any Department of Fish and Wildlife signs.
- Launch a boat or personal watercraft from the beach in the Moses Lake Sand Dunes.
- Carry, transport, or convey a loaded weapon in or upon any non highway vehicle except by permit issued by the director of fish and wildlife under chapter 77.32 RCW: Provided, it is not unlawful to carry, transport, or convey a loaded pistol in or upon a non highway vehicle if the person complies with the terms and conditions of chapter 9.41 RCW
It is an infraction to:
- Operate any ORV without a valid ORV use permit.
- Operate an ORV in a manner as to endanger property of others.
- Operate an ORV without a headlight/taillight between dusk and dawn.
- Operate an ORV without an adequate braking device.
- Operate an ORV without an approved spark arresting device.
- Operate an ORV without an adequate muffling device.
- Operate an ORV on the shoulder, inside bank or slope of a highway.
- Operate an ORV on lands restricted to pedestrian or animal travel.
It is a civil infraction to:
- Operate any motorcycle or ATV without an approved helmet.
- Operate any ORV (except motorcycle) without a flag that is 108 inches from the ground and is orange or red.
- Discharge any firearm in the off-road vehicle areas with the exception of the seasonally closed area of the Moses Lake Sand Dunes during lawful hunting seasons.
- Burn pallets, tires, or any wood with metal fasteners.
- No Parking of any vehicle/ ORV between the posted signs and shoreline.