Midco Aquatic Center The Midco® Aquatic Center is Sioux Falls’ first public indoor aquatic facility. HOURS OF OPERATIONMonday – Friday: 5:30 a.m. – 8 p.m. Saturday: 7 a.m. – 6 p.m. Sunday: 12 noon – 5 p.m. Midco Aquatic Center Official Website Midco Aquatic Center Facebook Page