<Table> <Tr> <Th> State 1 </Th> <Th> State 2 </Th> <Th> State 3 </Th> <Th> Water </Th> <Th> Notes </Th> </Tr> <Tr> <Td> Alabama </Td> <Td> Mississippi </Td> <Td> Tennessee </Td> <Td> Tennessee River </Td> <Td> </Td> </Tr> <Tr> <Td> Arizona </Td> <Td> California </Td> <Td> Nevada </Td> <Td> Colorado River </Td> <Td> </Td> </Tr> <Tr> <Td> Arkansas </Td> <Td> Mississippi </Td> <Td> Tennessee </Td> <Td> Mississippi River </Td> <Td> Memphis , Tennessee metro area . </Td> </Tr> <Tr> <Td> Arkansas </Td> <Td> Missouri </Td> <Td> Tennessee </Td> <Td> Mississippi River </Td> <Td> </Td> </Tr> <Tr> <Td> Connecticut </Td> <Td> New York </Td> <Td> Rhode Island </Td> <Td> Long Island Sound </Td> <Td> The part of New York that is in this tri-state area is Fishers Island . It is the New London , Connecticut metro area . </Td> </Tr> <Tr> <Td> Delaware </Td> <Td> New Jersey </Td> <Td> Pennsylvania </Td> <Td> Delaware River </Td> <Td> Philadelphia metro area , at the east end of the Twelve - Mile Circle . </Td> </Tr> <Tr> <Td> Florida </Td> <Td> Georgia </Td> <Td> Alabama </Td> <Td> Chattahoochee River </Td> <Td> Located in river very near marker on dry land . </Td> </Tr> <Tr> <Td> Georgia </Td> <Td> North Carolina </Td> <Td> South Carolina </Td> <Td> Chatooga River </Td> <Td> Located in river very near marker on dry land . </Td> </Tr> <Tr> <Td> Idaho </Td> <Td> Oregon </Td> <Td> Washington </Td> <Td> Snake River </Td> <Td> </Td> </Tr> <Tr> <Td> Illinois </Td> <Td> Indiana </Td> <Td> Kentucky </Td> <Td> Wabash River and Ohio River </Td> <Td> Evansville , Indiana metro area . See Illinois -- Indiana -- Kentucky tri-state area . </Td> </Tr> <Tr> <Td> Illinois </Td> <Td> Indiana </Td> <Td> Michigan </Td> <Td> Lake Michigan </Td> <Td> Known as either the Indiana Dunes or the Michigan Dunes Area </Td> </Tr> <Tr> <Td> Illinois </Td> <Td> Iowa </Td> <Td> Wisconsin </Td> <Td> Mississippi River </Td> <Td> Dubuque , Iowa metro area . </Td> </Tr> <Tr> <Td> Illinois </Td> <Td> Kentucky </Td> <Td> Missouri </Td> <Td> Mississippi River and Ohio River </Td> <Td> Little Egypt region popularly labeled as a tri-state area with St. Louis , Missouri , Carbondale , Illinois metro area , and Paducah , Kentucky being its nuclei . </Td> </Tr> <Tr> <Td> Illinois </Td> <Td> Michigan </Td> <Td> Wisconsin </Td> <Td> Lake Michigan </Td> <Td> </Td> </Tr> <Tr> <Td> Indiana </Td> <Td> Kentucky </Td> <Td> Ohio </Td> <Td> Ohio River </Td> <Td> Cincinnati , Ohio metro area . The tripoint is near , but not precisely at , the confluence with the Great Miami River . </Td> </Tr> <Tr> <Td> Iowa </Td> <Td> Illinois </Td> <Td> Missouri </Td> <Td> Mississippi River and Des Moines River </Td> <Td> Border with Lee County , Iowa </Td> </Tr> <Tr> <Td> Iowa </Td> <Td> Minnesota </Td> <Td> Wisconsin </Td> <Td> Mississippi River </Td> <Td> La Crosse , Wisconsin metro area . Was apparently marked at one time with a sign that had been anchored in the location , but that sign has since been moved as of 2001 . </Td> </Tr> <Tr> <Td> Iowa </Td> <Td> Missouri </Td> <Td> Nebraska </Td> <Td> Missouri River </Td> <Td> </Td> </Tr> <Tr> <Td> Iowa </Td> <Td> Nebraska </Td> <Td> South Dakota </Td> <Td> Big Sioux River and Missouri River </Td> <Td> Sioux City , Iowa metro area . </Td> </Tr> <Tr> <Td> Kansas </Td> <Td> Missouri </Td> <Td> Nebraska </Td> <Td> Missouri River </Td> <Td> </Td> </Tr> <Tr> <Td> Kentucky </Td> <Td> Missouri </Td> <Td> Tennessee </Td> <Td> Mississippi River </Td> <Td> Three separate tripoints , due to meanders of the river ( though probably only a single tri-state area surrounding them all ) . See also Kentucky Bend . </Td> </Tr> <Tr> <Td> Kentucky </Td> <Td> Ohio </Td> <Td> West Virginia </Td> <Td> Big Sandy River and Ohio River </Td> <Td> Huntington ( W.V. ) - Ashland ( Ky . ) - Ironton ( Oh . ) Tri-State region . </Td> </Tr> <Tr> <Td> Maryland </Td> <Td> Virginia </Td> <Td> West Virginia </Td> <Td> Potomac River </Td> <Td> Unmarked , at low water line , and almost always submerged . </Td> </Tr> <Tr> <Td> Michigan </Td> <Td> Minnesota </Td> <Td> Wisconsin </Td> <Td> Lake Superior </Td> <Td> </Td> </Tr> <Tr> <Td> Minnesota </Td> <Td> North Dakota </Td> <Td> South Dakota </Td> <Td> Bois de Sioux River </Td> <Td> Not directly marked and most probably within river . </Td> </Tr> <Tr> <Td> New Jersey </Td> <Td> New York </Td> <Td> Pennsylvania </Td> <Td> Middle of Delaware River </Td> <Td> Mistakenly marked by so - called Tri-States Monument on left bank of river . </Td> </Tr> <Tr> <Td> Ohio </Td> <Td> Pennsylvania </Td> <Td> West Virginia </Td> <Td> Ohio River </Td> <Td> Technically the Beginning Point of
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Middle of Delaware River