Supreme Court of the United States, Mississippi v. Tennessee (2021)
“ For these reasons, we hold that the waters of the Middle Claiborne Aquifer are subject to the judicial remedy of equitable apportionment. B Mississippi contends that it has sovereign ownership of all groundwater beneath its surface, so equitable apportionment ought not apply. We see things differently. It is certainly true that “each State has full jurisdiction over the lands within its borders, including the beds of streams and other waters.” ”
