Editing Philadelphia (section)

===Topography===
Philadelphia's geographic center is about 40° 0′ 34″ north latitude and 75° 8′ 0″ west longitude. The [[40th parallel north]] passes through neighborhoods in [[Northeast Philadelphia]], [[North Philadelphia]], and [[West Philadelphia]] including [[Fairmount Park]]. The city encompasses {{convert|142.71|sqmi|2}}, of which {{convert|134.18|sqmi|2}} is land and {{convert|8.53|sqmi|2}}, or 6%, is water.<ref name="CenGeoGazetteer">{{cite web |title=2016 U.S. Gazetteer Files |url=https://www2.census.gov/geo/docs/maps-data/data/gazetteer/2016_Gazetteer/2016_gaz_place_42.txt |publisher=[[United States Census Bureau]] |access-date=May 25, 2018 |archive-date=August 24, 2017 |archive-url=https://web.archive.org/web/20170824204429/https://www2.census.gov/geo/docs/maps-data/data/gazetteer/2016_Gazetteer/2016_gaz_place_42.txt |url-status=live }}</ref> Natural bodies of water include the [[Delaware River|Delaware]] and [[Schuylkill River|Schuylkill]] rivers, lakes in [[Franklin Delano Roosevelt Park]], and [[Cobbs Creek|Cobbs]], [[Wissahickon Creek|Wissahickon]], and [[Pennypack Creek|Pennypack]] creeks. The largest artificial body of water is East Park Reservoir in [[Fairmount Park]].

The lowest point is sea level and the highest point is in [[Chestnut Hill, Philadelphia|Chestnut Hill]], about {{convert|446|ft|m|0}} above sea level on Summit Street near the intersection of Germantown Avenue and [[Bethlehem Pike]] at: 40.07815 N, 75.20747 W.<ref>{{cite web |url=https://viewer.nationalmap.gov/advanced-viewer/ |title=The National Map |publisher=U.S. Geological Survey |website=nationalmap.gov |access-date=October 22, 2018 |archive-date=March 29, 2012 |archive-url=https://web.archive.org/web/20120329155652/http://viewer.nationalmap.gov/viewer/ |url-status=dead }}</ref><ref>{{cite web |url=https://www.chestnuthilllocal.com/2016/08/17/discovering-chestnut-hill-discover-summit-street-a-microcosm-of-19th-century-american-architecture/ |title=Discovering Chestnut Hill: Discover Summit Street, a microcosm of 19th Century American architecture – Chestnut Hill Local Philadelphia PA |publisher=Chestnut Hill Community Association |website=chestnuthilllocal.com |date=August 17, 2016 |access-date=October 22, 2018 |archive-date=August 18, 2016 |archive-url=https://web.archive.org/web/20160818181213/https://www.chestnuthilllocal.com/2016/08/17/discovering-chestnut-hill-discover-summit-street-a-microcosm-of-19th-century-american-architecture/ |url-status=live }}</ref> Philadelphia is located on the [[Atlantic Seaboard Fall Line]] that separates the [[Atlantic Plain]] from the [[Piedmont (United States)|Piedmont]].<ref>{{cite web |last=Railsback |first=Bruce |url=http://www.gly.uga.edu/railsback/1122EUSMISR.html |title=GEOL 1122: Earth's History of Global Change:The Fall Line |archive-url=https://web.archive.org/web/20200219174225/http://www.gly.uga.edu/railsback/1122EUSMISR.html |archive-date=February 19, 2020 |website=University of Georgia Department of Geology }}</ref> The Schuylkill River's rapids at [[East Falls, Philadelphia|East Falls]] were inundated by completion of the dam at [[Fairmount Water Works]].<ref>"[http://www.phila.gov/phils/Docs/otherinfo/pname1.htm Philadelphia Neighborhoods and Place Names, A–K] {{Webarchive |url=https://web.archive.org/web/20101001200519/http://www.phila.gov/phils/docs/otherinfo/pname1.htm |date=October 1, 2010 }}". ''Philadelphia Information Locator System''.</ref>

The city is the seat of [[Philadelphia County, Pennsylvania|its own county]]. The city is bordered by six adjacent counties: [[Montgomery County, Pennsylvania|Montgomery]] to the northwest; [[Bucks County, Pennsylvania|Bucks]] to the north and northeast; [[Burlington County, New Jersey]] to the east; [[Camden County, New Jersey]] to the southeast; [[Gloucester County, New Jersey]] to the south; and [[Delaware County, Pennsylvania|Delaware County]] to the southwest.