Maryland v. West Virginia

Maryland v. West Virginia
Supreme Court of the United States
Argued November 2–4, 1909 Decided February 21, 1910
Full case name	State of Maryland v. State of West Virginia
Citations	217 U.S. 1 (more) 30 S. Ct. 268; 54 L. Ed. 645; 1910 U.S. LEXIS 1942
Case history
Subsequent	Maryland v. West Virginia, 225 U.S. 1 (1912)
Holding
West Virginia's border extends to the low-water mark on the south bank of the Potomac River; Boundary disputes should be adjusted according to prescription and equity to least disturb private rights and titles
Court membership
Chief Justice Melville Fuller Associate Justices John M. Harlan · David J. Brewer Edward D. White · Joseph McKenna Oliver W. Holmes Jr. · William R. Day William H. Moody · Horace H. Lurton
Case opinion
Majority	Day, joined by unanimous

Maryland v. West Virginia, 217 U.S. 1 (1910), is a 9-to-0 ruling by the United States Supreme Court which held that the boundary between the American states of Maryland and West Virginia is the south bank of the North Branch Potomac River.^[1] The decision also affirmed criteria for adjudicating boundary disputes between states, which said that decisions should be based on the specific facts of the case, applying the principles of law and equity in such a way that least disturbs private rights and title to land.