70:04:05:17Wetland
Section · Administrative Rules of South Dakota · View on sdlegislature.gov ↗
drainage. The installation of privately owned lines, open ditches, drainage tile, or conduits on state trunk highway rights-of-way for the purpose of draining adjacent wetlands onto the highway right-of-way is prohibited.
Source: 15 SDR 185, effective June 4, 1989.