Forest Glen is one of the 77 official city community areas of Chicago, Illinois, located on the city's Northwest Side. It comprises the neighborhoods of Forest Glen, Edgebrook and Sauganash, with sub-neighborhoods of Sauganash Park, Wildwood, North Edgebrook and Old Edgebrook.

The Chicago River is a system of rivers and canals with a combined length of 156 miles (251 km) that runs through the city of Chicago, including its center. Though not especially long, the river is notable because it is one of the reasons for Chicago's geographic importance: the related Chicago Portage is a link between the Great Lakes and the Mississippi River Basin, and ultimately the Gulf of Mexico.