Editing Port Washington, New York (section)

=== Topography ===
Like the rest of Long Island's [[North Shore (Long Island)|North Shore]], Port Washington is situated on a [[terminal moraine]], known as the [[Harbor Hill Moraine]].<ref name=":58">{{Cite web |title=Garvies Point Museum and Preserve – Geology of Long Island |url=http://www.garviespointmuseum.com/geology.php |access-date=November 7, 2020 |publisher=Garvies Point Museum}}</ref><ref name=":59">{{Cite web |title=Geology – Friends of the Bay |url=http://friendsofthebay.org/about-us/geology/ |access-date=November 7, 2020 |publisher=Friends of the Bay}}{{Dead link|date=April 2024|bot=InternetArchiveBot|fix-attempted=yes}}</ref> This moraine was formed by [[glacier]]s during the [[Wisconsin glaciation|Wisconsin Glacial Episode]], and is named for [[Harbor Hill]] in Roslyn; Harbor Hill is the highest geographic point in Nassau County.<ref name=":58" /><ref name=":59" />

According to the [[United States Environmental Protection Agency]] and the [[United States Geological Survey]], the highest point in Port Washington is Beacon Hill, at an elevation of roughly {{Convert|270|ft|m}}, and the lowest point is Hempstead Harbor and Manhasset Bay, which are at [[sea level]].<ref name=":16">{{Cite web |title=EPA – Waters GeoViewer |url=https://epa.maps.arcgis.com/apps/webappviewer/index.html?id=ada349b90c26496ea52aab66a092593b |url-status=live |archive-url=https://web.archive.org/web/20190401215117/https://epa.maps.arcgis.com/apps/webappviewer/index.html?id=ada349b90c26496ea52aab66a092593b |archive-date=April 1, 2019 |access-date=July 28, 2021 |website=[[United States Environmental Protection Agency]]}}</ref><ref>{{Cite web |title=The National Map – Advanced Viewer |url=https://apps.nationalmap.gov/viewer/ |url-status=live |archive-url=https://web.archive.org/web/20210202060756/https://apps.nationalmap.gov/viewer/ |archive-date=February 2, 2021 |access-date=July 30, 2021 |website=[[United States Geological Survey]]}}</ref>