SDCL § 46-10-1: Action for general adjudication of water or water use rights--When attorney general to bring.

It shall be the duty of the attorney general to bring an action for the general adjudication of the nature, extent, content, scope, and relative priority of the water rights and the rights to use water of all persons, or entities, public or private, on any river system and on all other sources, when in his judgment, or in the judgment of the Water Management Board, the public interests require such action.