Kan. Stat. § 18-122
The county of Doniphan is bounded as follows: Commencing at a point on the west boundary line of the state of Missouri, where it is intersected by the extended base line or north boundary of the state of Kansas; thence west with said base line, to the corner on said line between ranges eighteen (18) and nineteen (19) east; thence south with said range line, to the southwest corner of township four (4) south, of range nineteen (19) east; thence east with the township lines between townships four (4) and five (5) south, to the range line between ranges twenty (20) and twenty-one (21) east; thence south on said range line, to the middle of the main channel of Independence creek; thence down said creek in the middle of the main channel thereof, to the former Atchison-Doniphan county line; thence easterly on said former Atchison-Doniphan county line to the former Missouri-Kansas boundary line; thence following said former Missouri-Kansas boundary line in a southerly direction to a point where said former Missouri-Kansas boundary line intersects the township line between townships 56 and 55 north of the Missouri government survey; thence east on said township line between townships 56 and 55 north of the Missouri government survey to the west boundary of the state of Missouri; thence with said western boundary line of the state of Missouri, to the place of beginning.
K.S.A. 18-122