Supreme Court of the United States

Arkansas v. Tennessee

January 25, 1970397 U.S. 88

Summary

The Supreme Court affirmed the Special Master’s report that the Arkansas‑Tennessee boundary at Cow Island Bend is fixed in the middle of the former Mississippi River channel because an avulsion occurred, thereby placing the disputed land in Tennessee.

Holding

  • Whether, after an avulsive change of the Mississippi River channel, the boundary between Arkansas and Tennessee remains in the middle of the former channel, making the disputed area part of Tennessee.. The boundary is fixed in the middle of the old, abandoned river channel because the change was an avulsion; therefore the disputed land belongs to Tennessee.

Docket 33 ORIG

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