S.D. Codified Laws § 46A-5-25
Current with legislation signed by the governor on or before 3/6/2024
If the water supply is not sufficient to supply continuously the lands susceptible of irrigation from the water supply, the board of directors shall apportion, in a just and equitable proportion, a certain amount of the water upon certain or alternate days to different localities, as the board deems best for the interests of all concerned and with due regard to the legal and equitable rights of all.
SDCL 46A-5-25