Adverse possession may also apply to territorial rights. In the United States, Georgia lost an island in the Savannah River to South Carolina in 1990, when South Carolina had used fill from dredging to attach the island to its own shore. Since Georgia knew of this yet did nothing about it, the U.S. Supreme Court (which has original jurisdiction in such matters) granted this land to South Carolina, although the Treaty of Beaufort (1787) explicitly specified that the river's islands belonged to Georgia.