Editing Berwyn, Illinois (section)

==Geography==
According to the 2021 census gazetteer files, Berwyn has a total area of {{convert|3.90|sqmi|km2|2}}, all land.<ref name="gaz2021">{{Cite web   |title=Gazetteer Files |url=https://www.census.gov/geographies/reference-files/time-series/geo/gazetteer-files.html |access-date=2022-06-29 |website=Census.gov}}</ref>  Bordering cities include [[Oak Park, Illinois|Oak Park]] to the north, [[Cicero, Illinois|Cicero]] to the east, [[Stickney, Illinois|Stickney]] to the south,  [[Lyons, Illinois|Lyons]], [[Riverside, Illinois|Riverside]], [[North Riverside, Illinois|North Riverside]], and [[Forest Park, Illinois|Forest Park]] to the west. Geologically, Berwyn is predominately composed of Glacial Lake Bottom from the [[Wisconsin Glacial Episode]], the most recent glacial period.  A beach ridge of sand and gravel, made during one of the stages of [[Lake Chicago]], is also present in the city.  This is most easily identified as Riverside Drive.  The elevation change due to the ridge is clearly seen on the 2800 block of Maple Ave.<ref>{{Cite web|url=http://www.isgs.illinois.edu/maps/isgs-quads/surficial-geology-1939/berwyn|title=Illinois State Geological Survey Surficial Geology of the Chicago Region: Berwyn Quadrangle {{!}} ISGS|website=www.isgs.illinois.edu|language=en|access-date=2017-09-04}}</ref>  Prior to the settlement of Berwyn, the land was grassy marshland.  The body of water that connected the [[Chicago River|South Branch of the Chicago River]] to the [[Des Plaines River]] was a shallow waterway or a muddy slough (depending on the season) known as [[Chicago Portage|Mud Lake]].  Mud Lake extended nearly to the southern border of today's Berwyn,<ref>{{cite web|url=http://www.encyclopedia.chicagohistory.org/pages/1198.html|title=Stickney, IL}}</ref> and the southern end of Berwyn flooded regularly during heavy rains in its early years.