NORTH SIOUX CITY, SD (KELO) -- People who own boats that were docked at flooded McCook Lake will now be able to retrieve their watercraft. Boat owners can report to the Isaak Walton League from 6-9 p.m. Sunday and Monday. Conservation Officers will escort each owner to their boats and back to the Izaak Walton League ramp. Owners need to bring their own boat trailer and a photo ID.