In a cooperative effort between the U.S. Army Corps of Engineers Chicago District and the Technical Services Dive Team, consisting of members from the Corps of Engineers Buffalo, New England, and Philadelphia, and Headquarters, dives were conducted to inspect the Chicago Fish Barrier and provide an overall condition assessment to Chicago District’s operation and maintenance teams. More specifically, the team was inspecting the condition of Barriers IIA and IIB and the parasitic structures located upstream and downstream of the barriers.