United States, Illinois, Will, Lockport Lock Peninsula - central; the site is located north to south on the isolated peninsula between the Chicago Sanitary and Ship Canal and the Des Plaines River, south of the Lockport Locks. Coordinate datum WGS 84 / NAD 83. Caton Farm Road alignment.
T. 36 N, R. 10 E, NE/4 SW/4 NW/4 Sect. 34.; 41.564583, -88.079861
168 meters Verbatim Elevation:
Gravelly soil over dolomite. Dolomite rock pile. Disturbed floodplain forest margin, with Solanum ptychanthum, Acer negundo, Fraxinus pennsylvanica.; Locally common rounded multi-branched annual herb on gravel.