Neb. Rev. Stat. § 22-174: Richardson.

The county of Richardson is bounded as follows: Commencing at the southwest corner of township one, north, of range thirteen, east; thence east to the middle of the main channel of the Missouri River; thence up said channel until it intersects the line dividing townships three and four, north; thence west to the northwest corner of township three, north, of range thirteen, east; and thence south to the place of beginning.