Lost Lake Recreation Area offers a 38-acre lake and San Joaquin River access 19 miles northeast of Fresno with non-motorized boating (kayaking and canoeing), fishing, and day-use facilities including picnic areas and restrooms.

The park features 37 campsites accommodating tents and RVs up to 34 feet, with two ADA-compliant sites, plus hiking trails through a primitive nature study area.

Swimming in the river is not recommended during water releases from Friant Dam due to high flows and strong currents; vehicle entry is $5 (free for veterans/active-duty military as of December 2025).