Mo. Rev. Stat. § 236.220
The circuit court of the proper county shall have power, upon petition, to prevent the erection or raising of any dam, stoppage, or obstruction across any stream which shall operate as a nuisance and be injurious to any mill, electric power and light works, or other machinery erected, or which shall dam up and render impure or unwholesome or unhealthy the waters of said stream at any point where water is or may be taken from said stream to supply the inhabitants of any city or town or village in the state with water, or of any dam, the erection of which has been authorized by the order of any competent tribunal, of a date earlier than that permitting the erection and raising of such first mentioned dam, stoppage or obstruction; and such court may, upon a final hearing of such petition, order and adjudge that such dam, stoppage or obstruction be abated by the sheriff of the proper county.
§ 236.220, RSMo