Moses Lake Mud Flats and Sand Dunes operates as a county-managed free camping area where off-road enthusiasts set up base camp directly on expansive sand flats. Campers access the site via a hard-packed sandy road that extends several miles from the residential area, with reviewers noting that rigs over 40 feet can navigate the wide route by staying on the main track and avoiding soft shoulders.
The camping area functions as open dispersed camping where visitors park anywhere along the flats, with most choosing spots near the gravel road for easier access. ATV riders dominate the landscape, using the dunes that range from beginner-friendly slopes to advanced terrain for serious off-roading. The lake provides boat launching opportunities, though October visitors report cold water temperatures. Summer months bring heavier crowds and extended nighttime activity, with some campers reporting ATV traffic and music continuing past 1 AM.
Dennis L. observed the scene: "For sure a cool place to just drink coffee and people watch in the sand." The site includes basic facilities with toilets and allows campfires, though reviewers note the restroom conditions vary. Alcohol is prohibited under state regulations. Cell service reaches the area, making it accessible for those needing connectivity. For additional camping infrastructure, Suncrest RV Park lies a few miles north.
The area works best for self-sufficient campers with off-road vehicles who don't mind an active, social camping environment.
RV Road Trip Guides
Location
Public CampgroundMoses Lake Mud Flats and Sand Dunes is located in Washington
Coordinates
47.06316269 N
119.32036067 W
Connectivity
- T-Mobile5GExcellent CoverageVerified by 2 usersLast on 5/4/26
- Verizon5GGood Coverage
- AT&T5GExcellent CoverageVerified by 1 userLast on 5/4/26
Connectivity
- T-Mobile5GExcellent CoverageVerified by 2 usersLast on 5/4/26
- Verizon5GGood Coverage
- AT&T5GExcellent CoverageVerified by 1 userLast on 5/4/26
Access
- Drive-InPark next to your site
Site Types
- Tent Sites
- RV Sites
- Group
Features
For Campers
- Trash
- Phone Service
- Toilets
- Pets
- Fires
FREE established camping
Enjoy camping on government land. Limited or no services at this camping area.
PERMIT might be REQUIRED
We curate permit requirements across the US for our PRO members. Try PRO to see if Moses Lake Mud Flats and Sand Dunes needs a permit.
Drive Time
- 1 hr 17 min from Wenatchee, WA
- 1 hr 28 min from Kennewick, WA
- 1 hr 42 min from Yakima, WA
- 2 hrs 3 min from Walla Walla, WA














