BIG RIVERS WATERPARK & ADVENTURES At 80-acres, Big Rivers Waterpark & Adventures is the star of Grand Texas’ 623-acre entertainment center. Located in Houston, the water park features more than 50 water and dry adventures and has something for every member of the family. Address: 23101 TX-242, New Caney, TX 77357 (I-69 @ Hwy. 242) […]