Kan. Stat. § 12-631q
Any county may unite with any city within such county for the purpose of constructing outlets for drainage of storm water in such county or city, as herein provided. Whenever the governing body of any city shall deem it necessary to construct an outlet for drainage of storm water from the corporate limits of any such city, to connect with any creek or river at any point within five miles of such corporate limits, the governing body of any such city shall pass a resolution declaring said improvement to be necessary.
Upon the publication of such resolution in the official city paper, such city shall cause to be made by some competent engineer plans and specifications, together with the estimated cost of such improvement, which plans and specifications and the estimated cost thereof shall be approved by such governing body, and, upon the approval of same, the resolution declaring said improvement necessary, together with such plans and specifications and estimate, shall be submitted to the board of county commissioners of any such county in which such city is located, and when such plans and specifications and estimate are approved by said board of county commissioners such city may proceed to make said improvement, and for this purpose the right of eminent domain is hereby granted. The proceedings for securing the land necessary for such outlet, and the construction of the same, shall be the same as that provided by law for cities in exercising the right of eminent domain.
For the cost of obtaining the land necessary for such outlet, and for the construction of same, bonds may be issued by such city, equal to fifty percent of the cost of obtaining such land and the construction of such outlet, in accordance with the law providing for the issuance of bonds for other internal improvements. Any county uniting with a city in the construction of any such outlet may issue bonds in an amount of up to fifty percent (50%) of the cost of obtaining such land and the construction of such outlet. The bonds issued by such city shall be paid by the levy of a general tax on all the property in any such city, and the bonds issued by such county shall be paid by the levy of general tax on all of the property in any such county.
K.S.A. 12-631q