Chicago will once again go all out for St. Patrick's Day this year with one of the city's most iconic traditions: The 2025 Chicago River Dyeing.

In recent years, the Chicago River itself has undergone a renaissance, from a lifeless industrial waterway into a vibrant public asset, the head of the Metropolitan Water Reclamation District writes.

CHICAGO, ILLINOIS – MARCH 13: An aerial picture shot with a drone shows the Chicago River as it flows through downtown after it was dyed green in celebration of St. Patrick’s Day on March 13 ...

Saturday, March 16, the Chicago River will magically turn a bright shade of green in honor of St. Patrick's Day. The tradition, put on by the Chicago Plumbers Union and dates back nearly 70 years ...