43-17-12. New arm of stream--Island formed by division belongs to owner of shore.If a stream, navigable or not navigable, in forming itself a new arm, divides itself and surrounds land belonging to the owner of the shore and thereby forms an island, the island belongs to such owner. Source: CivC 1877, §588; CL 1887, §3211; RCivC 1903, §904; RC 1919, §502; SDC 1939, §51.1109.
South Dakota Legal Code