The City of Turlock has a number of places where families can dive into wet summer fun with two aquatic playgrounds and three pools offering recreational swim hours throughout the week. The Columbia Pool, located at 600 Columbia Street, opens Saturday for the season. Open swim is from 12:30 p.m. to 2:30 p.m. Monday through Thursday and from 1 p.m. to 5 p.m. Saturday and Sunday.