41:07:01:02.02South Dakota-Iowa reciprocal access agreement.
Section · Administrative Rules of South Dakota · View on sdlegislature.gov ↗
If the state of Iowa grants reciprocal privileges to lawful South Dakota anglers any lawful Iowa angler may fish from a boat or either bank in the South Dakota-Iowa boundary waters of the Big Sioux River if the angler complies with the laws of the state in which the angler is licensed or the laws of the state in which the angler is fishing, whichever are more restrictive.
Source: 16 SDR 114, effective January 18, 1990; 27 SDR 47, effective November 12, 2000.