On August 8, 2004, a tour bus belonging to Dave Matthews Band dumped an estimated 800 pounds (360 kg) of human waste from the bus's blackwater tank through the Kinzie Street Bridge in Chicago onto an open-top passenger sightseeing boat sailing in the Chicago River below.
[4] Dave Matthews Band had booked rooms at the Peninsula Hotel on 108 E. Superior Street for a two-night show at Alpine Valley Music Theatre in East Troy, Wisconsin.
According to the Illinois Attorney General, passengers aboard included persons with disabilities, elderly, a pregnant woman, a small child, and an infant.
On August 9, the Chicago Architecture Foundation released a statement that a witness had recorded license-plate information, which they had turned over to the police as evidence.
In a phone interview, Fitzpatrick denied to a Chicago Tribune reporter that he had dumped the waste, asserting that he was parked in front of the band's hotel at the time.
On August 24, Illinois Attorney General Lisa Madigan filed a $70,000 lawsuit against Stefan Wohl, alleging that he was responsible for the dumping.
[4] He was sentenced to 150 hours of community service, fined $10,000, to be paid to Friends of the Chicago River, an environmental organization, and received 18 months probation.
[15] On August 8, 2023, the Riot Fest Historical Society attached a plaque to the Kinzie Street Bridge commemorating the 19th anniversary of the incident.
On August 8, 2024, a documentary film entitled The Crappening was announced with the stated goal of finding and recording first-hand witness accounts of the event.