Ruth Lake Access provides boat launch facilities managed by the Ruth Lake Community Services District on an 8-mile-long reservoir in Southern Trinity County.

All watercraft must pass inspection and registration at one of three launch sites (Ruth Lake Marina, Ruth Recreation Campground, or Old Ruth Day-Use Area) to prevent the spread of invasive aquatic species; inspections are available daily from 7am-8pm at the marina and campground.

The lake offers a variety of boating and fishing opportunities with nearby campgrounds and the Ruth Lake Marina providing boat rentals and commercial services.