Swimming, paddleboarding, and tubing draw campers to Mary Smith Campground on the western shore of Lewiston Lake, where a short path from several sites leads directly to the water. The campground sits within Trinity National Forest, managed by the US Forest Service, and holds just 17 sites spread across sloped terrain above the lake. That modest size keeps things low-key, and multiple reviewers note the water here tends to stay noticeably cold, fed by the upper reservoir system, making tubes and paddleboards a more practical choice than long swims on all but the hottest days.
The layout requires some effort. Sites are set on a hill, so campers should expect to carry gear up or down depending on their spot. Tent platforms are available at some sites, and upper sites face open sightlines toward the lake and the Trinity Alps in the distance. Birds and frogs are active around the water's edge, particularly in spring. Kinney Camp and Cooper Gulch Campground sit close by for those traveling with a group that needs more space.
Toilets are on-site, including flushable facilities near the campground entrance, though neither bathroom has lighting. There is no camp store. Firewood and ice are available roughly ten minutes away at a gas station in Lewiston, and Pine Cove Marina, about ten minutes past the campground, rents boats and kayaks at reasonable rates. Reservations are available, and pets are welcome. "Birds and frogs were in abundance," noted Karen O. on a quiet spring visit. Campers who come mid-week or early in the season may find the place largely to themselves.
RV Road Trip Guides
Map & DirectionsMary Smith Campground is located in California near Lewiston
Coordinates
40.73158465 N
122.8085734 W
Connectivity
- T-MobileNo Coverage
- VerizonLTESome Coverage
- AT&TNo Coverage
Connectivity
- T-MobileNo Coverage
- VerizonLTESome Coverage
- AT&TNo Coverage
Access
- Drive-InPark next to your site
- Walk-InPark in a lot, walk to your site.
- Boat-InSites accessible by watercraft.
Site Types
- Tent Sites
- Tent Cabin
Features
For Campers
- Trash
- Picnic Table
- Reservable
- Drinking Water
- Toilets
- Alcohol
- Pets
- Fires








