Mo. Rev. Stat. § 256.400: Definitions.

As used in sections 71.287 and 256.400 to 256.433, unless the context clearly indicates otherwise, the following terms mean:

(1) "Department" , the department of natural resources;

(2) "Director" , the director of the department of natural resources;

(3) "Division" , the division of geology and land survey of the department of natural resources;

(4) "Major water user" , any person, firm, corporation or the state of Missouri, its agencies or corporations and any other political subdivision of this state, their agencies or corporations, with a water source and equipment necessary to withdraw or divert one hundred thousand gallons or more per day from any stream, river, lake, well, spring or other water source;

(5) "State geologist" , the director of the division of geology and land survey of the department of natural resources;

(6) "Water source" , any stream, river, lake, well, spring or other water source.