(a) An overlap of the authority’s territory with another district’s or authority’s territory or watershed does not affect the powers, affairs, duties, or functions of another district or authority, including the Canadian River Municipal Water Authority.
(b) A district or authority of a local nature, peculiar to a defined area, may be created wholly or partly inside the authority.

(c) The authority shall cooperate in every practical manner with the sponsor of an existing or proposed district or authority described by this section in the prosecution of its proposed improvements.