Hours of Operation

• 31227 436th Ave
  Yankton, SD 57078

  Aquarium:
  May 1-Labor Day: Open 7 days a week, 10:00 AM-5:00PM
  April and September:
  Open Monday-Friday,
  10:00AM-3:00PM
  October 1-March 31: Closed
  Main Hatchery Building:
  Open Monday-Friday, 7:00AM-3:00PM
  (with limited summer weekend hours)
  Outdoor Facilities and Walking Trails:
  Open 7 days a week, all year round