The name of Miller Springs made note of the natural springs located on the property and recognized one of the previous property owners, Ed Miller. The area on the south side of the Leon River with driving access off of FM 439 at the Outlet was known as Miller Springs Park - River Access. The area on the north side of the river with driving access off of highway 317 was known as Miller Springs Park - Off Road Vehicle Area. Both sides had several concrete picnic and camping tables located near the Leon River. Camping and fishing was a popular activity.
Many people remember collecting pecans from the native trees in the area.
Off road vehicle activities were originally intended to be used only in the borrow area formed from the construction of Belton Dam. There was a plan to develop the area as a park with more tables, but funding problems kept this from occurring. Criminal mischief, including looting of archaeological sites, damage by off-road vehicles, litter, and frequent drug and alcohol related incidents were common. In early 1990, metal gates were built by the Corps off highway 317 at the entrance road to Miller Springs park area. The reason for closing the area originally was to provide a borrow area for the State Highway Department to use in relocating a portion of FM 2271.