Hydroelectric power: The St. Lawrence River is a major source of hydroelectric power. Several hydroelectric power plants are located along the river, generating electricity for both Canada and the United States. The largest of these is the Robert Moses Niagara Power Plant, which has a generating capacity of 2,700 megawatts.
Fishing: The St. Lawrence River is home to a variety of fish species, including walleye, bass, pike, and salmon. Fishing is a popular recreational activity along the river, and commercial fishing also occurs.
Recreation: The St. Lawrence River is a popular destination for water sports and other recreational activities. Boating, fishing, swimming, and camping are all popular activities along the river. The river is also home to several tourist attractions, including the Thousand Islands, a group of islands located in the river between Canada and the United States.
Drinking water: The St. Lawrence River is a source of drinking water for many communities in Canada and the United States. The water is treated and purified before being distributed to homes and businesses.