K.S.A. 24-402: Lands within cities may be included in drainage district.

That any drainage district may include lands within the county subject to overflow from the same natural watercourse, whether the same be situated partly within and partly without or wholly within or without any incorporated city: Provided, That no territory, within any incorporated city, located in any county having an assessed tangible valuation of more than one hundred fifty million dollars shall be included within any drainage district unless the consent of the governing body of such city to the inclusion of such territory shall first be obtained.