The Saint Lawrence River forms the boundary between Ontario, Canada, and New York State.
The Saint Lawrence river is the longest river in New York. The Saint Lawrence river is 744 miles long.
The St. Lawrence River
The major rivers in New York State are the Saint Lawrence River, Mohawk River, Oswegatchie River, Black River, Ausable River, and Chenango River.
St Lawrence River (between New York and Ontario) and St Croix River (between Maine and New Bruinswick) both form part of the International Boundary between Canada and the US.
The St. Lawrence River runs through United States and Canada. It passes through Quebec, Ontario and New York city and runs 1,900 miles.
There are 2 rivers I can think of that borders Canada and New York state. The St Lawrence River borders most of Ontario and New York east of Lake Ontario, and you also have the Niagara River which boarders at Niagara Falls
Saint Lawrence River
The St. Lawrence River is located in North America Bordering US and Canada. It connects the Great Lakes with the Atlantic Ocean.
The Saint Lawrence River flows northeastward from the eastern end of Lake Ontario to the Gulf of Saint Lawrence. The first stretch of the river forms the border between Ontario (Canada) and New York State (USA); the rest of the river lies in Québec.
The East River and the Hudson River
The web address of the St Lawrence River Historical Foundation Inc is: www.srhf.info