I live in the highlands of the Hudson River Valley -- about 90 miles north of New York City and 90 miles south of Albany, New York. The Iroquois name for the river translated as "the river that flows both ways" -- as it is a tidal river. Just south of where I live the river reaches its greatest width (3.5 miles) and greatest depth (175 feet). Near where I live the Hudson switches over from salt water to fresh water -- as such the valley is a bona fide fjord:
http://www.dec.ny.gov/lands/66611.html