Ouachita National Forest Overnight Camping Act This bill requires the identification and development of campsites and related facilities in the Ouachita National Forest in Arkansas. The Department of Agriculture (USDA) shall (1) identify areas within Albert Pike Recreation Area that may be suitable for overnight camping; (2) review each area identified; and (3) from the areas identified, select and establish campsites and related facilities within the recreation area for public use. USDA must ensure (1) that at least 54 campsites are available, of which not less than 8 shall have electric and water hookups; and (2) that each campsite and related facility identified or established is located outside of the 1% annual exceedance probability flood elevation. Not later than 30 days after the enactment of this bill, USDA shall open each campsite within the recreation area that (1) exists on the enactment of this bill, and (2) is located outside of the 1% annual exceedance probability flood elevation.