sentence: Water also drains from the Chicago River on the south.
sentences_before: Though the five lakes have separate basins, they form a single, connected body of freshwater. The lakes connect the east-central interior of North America to the Atlantic Ocean.
sentences_after: The Chicago River originally flowed into Lake Michigan. The flow was artificially reversed to protect the quality of Chicago's drinking water that comes from Lake Michigan.
concept_name: water
headings: Great Lakes Geography
categories: Ecology