USFS · Campground · Free
Yes. Gwynn Tank is free to use. It is managed by the USFS.
From Reserve, turn south onto State Highway 435 approximately 5 miles to its end at Forest Road 141. Continue straight on Forest Road 141 for approximately 27.8 miles to the campground on the north (left) side of Forest Road 141.
A 14-day stay limit applies. There is no trash service - pack it in, pack it out. OHV/ATV use is prohibited in the campground. Hunting and shooting are prohibited in the campground.
SourceData from the USFS. Last synced September 18, 2026. Community reports and photos are submitted by travelers and are not verified by the agency.