The City of Chicago Department of Water Management (DWM) and MWRD will showcase construction of an innovative pilot of a wing storage unit designed to help mitigate flooding by collecting and storing stormwater in this flood prone area. 

With the completed structure under Maypole Street, the projects will provide nearly 1.7 million gallons of stormwater storage, offering enhanced flood protection for more than 2,900 homes, businesses, and other buildings across the 28th, 29th, and 37th wards on Chicago’s West Side. DWM and MWRD are sharing the cost of this $12 million infrastructure investment, which will expand local sewer capacity to capture and temporarily store rainfall during intense storms.

Wing Storage is an underground detention structure—an auxiliary holding tank installed beneath side streets or alongside existing sewer lines. These tanks temporarily capture excess rainwater during heavy storms, helping prevent street and basement flooding in surrounding neighborhoods.