We used the sewer dump while passing through and had to stop at a site to fill potable water because it wasn't available at the RV dump location. The staff didn't charge us the $5 dump fee. When you pull in, go through the C loop. The RV dump is at the end of the loop. Parking for the office is not clearly marked. There is potable water and rinse water (non-potable) available. The RV dump station is located at I-10 Exit 43.