Missouri v. Nebraska
Headline: Sudden 1867 Missouri River shift does not change the Missouri–Nebraska border; Court rules disputed island land remains part of Nebraska and denies Missouri’s claim.
Holding: The Court held that the sudden 1867 change in the Missouri River's channel did not alter the state boundary; the true border remains the center of the old channel, and Nebraska prevailed.
- Affirms that sudden river shifts don't move state borders, leaving disputed land in Nebraska.
- Allows states to use old river channels and surveys to fix permanent boundaries.
- Requires formal surveys or agreement to place permanent boundary markers.
Summary
Background
Before July 5, 1867, the Missouri River flowed in a channel that formed the boundary between Missouri and Nebraska near McKissick’s Island. During very high water on that date the river suddenly cut a new channel through a narrow neck of land. The old channel dried and became farmable ground, moving the river’s flow but leaving the previous bed on record. Missouri sued to treat the new river channel as the state line and claim the land; Nebraska argued the old channel still marked the border.
Reasoning
The central question was whether a sudden, visible change in the river’s course automatically moved the state boundary. The Court applied earlier decisions that distinguish gradual buildup of land (which can shift a boundary) from a sudden change called avulsion. The Court held that avulsion does not change the boundary; the true line remains the center of the old channel as it existed before July 5, 1867. The Court rejected Missouri’s arguments that congressional acts fixed the border to whatever the river’s channel happens to be now. As a result, the Court dismissed Missouri’s original claim and granted Nebraska’s cross claim.
Real world impact
The decision keeps the disputed land within Nebraska and directs the States to accept existing surveys or request new surveys to mark the old channel’s middle. The Court stayed final decree forty days so the States could agree on surveys or ask for a new survey and monuments to mark the permanent boundary.
Ask about this case
Ask questions about the entire case, including all opinions (majority, concurrences, dissents).
What was the Court's main decision and reasoning?
How did the dissenting opinions differ from the majority?
What are the practical implications of this ruling?