Niagara River

The Niagara River flows north from Lake Erie to Lake Ontario, forming part of the boundary between Ontario and New York. Niagara Falls divides it into upper and lower sections.

Niagara Falls: A group of waterfalls on the Niagara River at the border of Ontario and New York. The falls divide the river into upper and lower reaches.
Lake Ontario: The easternmost Great Lake, bordered by Ontario and New York. The Niagara River empties into this lake.
International Niagara Board of Control: A binational body that oversees regulation of Niagara River flows under the Boundary Waters Treaty. It helps coordinate water levels and diversions across the international boundary.
Battle of Fort Niagara: A 1759 battle in which British forces captured the French-held Fort Niagara during the French and Indian War. Control of the river's mouth mattered to the struggle for access to the Great Lakes.
Upper Niagara River: The section of the Niagara River from Lake Erie to the head of Niagara Falls. It includes the river's broad, comparatively calm reach above the falls.
Niagara Gorge: A steep-sided gorge carved by the Niagara River downstream of Niagara Falls. The river cuts through this gorge below the falls.
Great Lakes: A system of five large freshwater lakes in North America connected by rivers and straits. The Niagara River is one link in this connected lake system.
Boundary Waters Treaty of 1909: A treaty between the United States and Canada governing shared waters along their boundary. Its framework guides cooperation over the Niagara River.
Fort Niagara: A historic fort at the mouth of the Niagara River on Lake Ontario in New York. Its strategic position guarded the river's entrance to Lake Ontario.
Lower Niagara River: The section of the Niagara River from the base of Niagara Falls to Lake Ontario. It runs through rapids and Niagara Gorge before reaching the lake.

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Buffalo, New YorkRelated: It forms Buffalo's western edge and links the city's lake to Niagara Falls.