Support Friends during Earth Month 2027 at our Largest Annual Fundraiser

April 15, 2027

6:00 p.m. - 8:00 p.m.

Aboard the Odyssey Chicago River

The Big Fish Ball engages community partners, corporate sponsors, educators, and more to support Friends of the Chicago Rivers mission: to protect and restore the Chicago-Calumet River System for all people, water, and wildlife. 

The 2027 Big Fish Ball will be held on Thursday, April 15, from 6 - 8 p.m. aboard the Odyssey Chicago River. Individual tickets will be available for sale later this February. 

Get involved today by supporting Friends as a sponsor. Sponsorships packages are available here.  Learn more about how you can support our event in the spring today by contacting Annie Hanrahan at ahanrahan@chicagoriver.org.

We’re deeply grateful to our  2026 Big Fish Ball sponsors and donors whose generosity fuels our public policy and planning initiatives, educational programs, and hands-on river restoration work. Special thanks also go to the 2026 Honorary Committee for their steadfast support of our mission to protect and restore the Chicago-Calumet River system for all people, water, and wildlife.