USFS · Campground · Free
Mariners Roost is a boat access only campground located on the Est Fork Stuart Fork Arm of Trinity Lake on the east side of Mule Creek cove. The campground offers 7 campsites with vault toilets.
From the USFS.
Yes. Mariners Roost Boat-in Campground is free to use. It is managed by the USFS.
From Weaverville, take Hwy 3 north for 7 miles. Turn right on Rush Creek Road for 9 miles. Turn left on Trinity Dam Blvd for 3/4 mile. Then right on Lewiston Vista/Mary Smith exit. Campground is 1/4 mile from exit.
SourceData from the USFS. Last synced September 18, 2026. Community reports and photos are submitted by travelers and are not verified by the agency.