Which river is one of the main tributaries feeding into Lake Ontario?

The Genesee River is indeed one of the main tributaries that feed into Lake Ontario. Originating in Pennsylvania, it flows northward through New York State and eventually empties into the lake at Rochester. This river plays a vital role in the hydrology of the region as it not only contributes water to Lake Ontario but also has historical significance and has been integral to the development of the communities it runs through.

The Ohio River and the Mississippi River, while significant waterways in the United States, do not flow into Lake Ontario; rather, they are part of entirely different river systems that drain into the Gulf of Mexico. The St. Lawrence River is also an essential waterway related to Lake Ontario, but it serves as the outlet rather than a tributary. It transports water from Lake Ontario to the Atlantic Ocean. Understanding these geographical relationships helps in grasping how the water systems in this region are interconnected.