- The Chicago River is dyed green every year, in observance of St. Patrick’s Day.
- Saint Patrick is the primary patron saint of Ireland.
- A vegetable dye is poured into the river on the Saturday of the closest weekend to 17 March.
- The Chicago River is a system of rivers and canals that runs through the city of Chicago, Illinoy.
Chicage, Chicago River, Illinois, Saint Patrick's Day, United States