Lower O'Brien Campground provides access to the Salmon River via 10 first-come, first-served campsites nestled in lodgepole pine forest, with potable water, toilets, and picnic tables available.

A nearby boat ramp at Yankee Fork offers access to 14 miles of Class III and IV rapids for river recreation. The campground is open June through September with a 10-day occupancy limit within any 30-day period, and pets and horses are permitted.