What is the name of the river that is found west of Manhattan?

The Hudson River is the correct answer because it is the major waterway located to the west of Manhattan. This river flows from north to south, running through New York State and separating Manhattan from New Jersey. It is a significant geographical feature of the region, serving as a vital conduit for transportation and commerce, historically and in contemporary times.

The East River, while it is another important body of water surrounding Manhattan, is situated to the east of the borough and connects Upper New York Bay to Long Island Sound. The Gowanus Canal is a smaller, more localized canal in Brooklyn that does not have the same prominence as the Hudson River and is also not located west of Manhattan. The Upper Bay refers to an area of water surrounding parts of New York City, including the harbor, but it does not specifically identify the river that is found to the west of Manhattan. The Hudson River’s positioning and characteristics distinguish it as the answer to the question.