The East River

This is a valid question whether the East River is a real river or not. Definitely this is not an estuary, as like the Hudson River. Experts point out that East River is rather a tidal channel, which means this is a part of the Bay protruding inside the land mass. The unusual strong current of this waterbody verifies this claim. So, as a resident of Roosevelt Island on the East River, this makes me happy that I am living on the Bay, rather than on a river.