Editing Westchester County, New York (section)

===Hudson River===
[[File:PocanticoRiver3.jpg|thumb|left|[[Philipsburg Manor House]] in [[Sleepy Hollow, New York|Sleepy Hollow]]]]The widest section of the Hudson River, at {{convert|3.6|mi|km|0}}, is found between the Westchester and Rockland County shorelines immediately north of Croton Point. In Colonial times, this area was called the Tappan Zee or Sea. The Hudson River is tidal and brackish through Westchester and contains a small number of estuarine marshes. Two bridges span the Hudson in Westchester: the [[Bear Mountain Bridge]] crosses at [[Cortlandt, New York|Cortlandt]] and the [[Tappan Zee Bridge (2017–present)|Tappan Zee Bridge]] at [[Tarrytown, New York|Tarrytown]]. Municipal, county and state-owned parks provide access to waterfront landmarks and sites, including Croton Point in Croton, Kingsland Point in [[Sleepy Hollow, New York|Sleepy Hollow]] and JFK Memorial Marina in Yonkers.

The Hudson River waterfront in Westchester is in a transitional period, converting from primarily industrial uses to mixed residential, commercial, retail, and recreational uses. This transformation is most notable in Yonkers, [[Hastings-on-Hudson]], [[Dobbs Ferry]], [[Irvington, New York|Irvington]], Tarrytown, Sleepy Hollow, [[Ossining (village), New York|Ossining]], and [[Peekskill]], where redevelopment projects are in various stages of design and completion. In 2004, the county began a project to create Westchester RiverWalk, a walkway along the Hudson River of {{convert|51.5|mi|km|sigfig=1}} which will provide pedestrian access between New York City and Putnam County. 32.9 miles of the route are complete and accessible.<ref name="RiverWalk"/>

At {{convert|987|feet}}, the highest elevation in the county is a [[US National Geodetic Survey|U.S. Coast and Geodetic Survey]] [[Benchmark (surveying)|benchmark]] known as "Bailey" in Mountain Lakes Park near the Connecticut state line.<ref>{{Cite news|url=https://www.nytimes.com/2003/11/09/nyregion/supersized-from-the-biggest-to-the-tallest.html|title=Supersized, From the Biggest To the Tallest|last=Rubenstein|first=Carin|date=November 9, 2003|work=[[The New York Times]]|access-date=October 12, 2018|archive-url=https://web.archive.org/web/20171229034610/https://www.nytimes.com/2003/11/09/nyregion/supersized-from-the-biggest-to-the-tallest.html|archive-date=December 29, 2017|url-status=live}}</ref>  The lowest elevation is sea level, along both the Hudson and Long Island Sound.