Rock'n River Family Aquatic Center
Open over 80 days a year. This 40,481 square-foot park complete with a lazy river with tunnel shower and water cannons, two crazy slides and a children's water structure is located withing Old Settlers Park. Additional amenities include tipping buckets, water geysers and a zero-beach entry play area.
See http://www.roundrocktexas.gov/home/index.asp?page=237 for admission and hours!