Mo. Rev. Stat. § 46.136
Beginning at a point in the middle of the main channel of the Mississippi River, where the prolongation east of the line between townships fifty-six and fifty-seven would intersect the same; thence west with said line to the northwest corner of section five, township fifty-six, range seven, west; thence south with the subdivisional lines to the southwest corner of section thirty-two, township fifty-three, range seven, west; thence east with the township line between townships fifty-two and fifty-three to the line of Pike County; thence in a direct line to the southeast corner of section sixteen, township fifty-four, range five, west; thence in a direct line to a point on the Mississippi River, where the line between townships fifty-five and fifty-six strikes the same; thence east to the middle of the main channel of the Mississippi River; and thence up said river, in the middle of the main channel thereof, to the place of beginning.
§ 46.136, RSMo