Whenever a county is bounded by a watercourse, it shall be construed to be the middle of the main channel thereof; and range, township and sectional lines shall be construed as conforming to the established surveys.
Mo. Rev. Stat. § 46.010
Boundaries by watercourses
Effective: 28 Aug 1939; (RSMo 1939 § 13664); Prior revisions: 1929 § 12005; 1919 § 9407; 1909 § 3624
Official source: Missouri Revisor of Statutes. Reproduced from public-domain Missouri statutes; confirm against the official source for the current text. Not legal advice.