The park is open year round with no entrance fee.
The Visitor Information Station, located in the Chamber of Commerce Building at 717 West Broadway, Sulphur, Oklahoma, is open daily from 8:00am to 5:00pm. Annual boat permits and federal entrance passes are available only when NPS staff is present.
The Travertine Nature Center, located on Travertine Creek near the eastern edge of the Platt Historic District, is open year-round. Operating hours are 9:00am to 6:00pm from Memorial Day though Labor Day. After Labor Day until the Friday before Memorial Day it is open from 8:00am to 5:00pm except for Thanksgiving Day, Christmas Day and New Year's Day.
Park Headquarters, located at 1008 West Second Street, Sulphur, Oklahoma, is open Monday through Friday from 8:00am to 4:30pm except for Federal Holidays.