NY is filled with "fake rivers"-- the East river and the Harlem River in NYC are both tidal straits, not really rivers, and the Niagra river (up state) is a also a strait-- between Lake Onterio and Erie.

and technically the Hudson river is a fjord-- not a river. (southern most fjord in NA) Near USMA --West Point the river is about 250 feet deep. at the harbor end, its silting up, but still meets the defination of a fjord.