The overnight-use fee is $8 per site per night and the day-use fee is $2 per vehicle. The Upper Loop has a 14 night stay limit, where as, the Lower Loop has a single night stay limit. The recreation area currently has 25 sites only available through recreation.gov reservations. The remaining sites are first come, first serveed ;(FF) payable by cash or by using the Scan and Pay feature on the recreation.gov app.