Statistics for Rivers that Form State Borders

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States	River	% Correct
Mississippi and Louisiana	Mississippi River	97%
Indiana and Kentucky	Ohio River	88%
Arizona and California	Colorado River	80%
Maryland and Virginia	Potomac River	77%
Washington and Oregon	Columbia River	75%
Oklahoma and Texas	Red River	59%
Minnesota and Wisconsin (south)	Mississippi River	57%
Nebraska and Iowa	Missouri River	55%
Illinois and Iowa	Mississippi River	51%
Oregon and Idaho	Snake River	51%
South Carolina and Georgia	Savannah River	40%
New Hampshire and Vermont	Connecticut River	29%
Minnesota and North Dakota	Red River of the North	25%
Alabama and Georgia	Chattahoochee River	20%
Texas and Louisiana	Sabine River	17%
Minnesota and Wisconsin (north)	St. Croix River	13%
Georgia and Florida	St. Marys River	10%
Kentucky and West Virginia	Tug Fork River	10%