Gone: River Park dam one year later
Jason Zylka, (left), U.S. Army Corps of Engineers Chicago District ecologist, explains to Mike Padilla (front), an engineer with the Chicago District, and Aiden Kelly, university student, the importance of the Chicago River natural riparian habitat in River Park July 31, 2019. The four-foot high concrete dam at the convergence of the North Branch of the Chicago River and the North Shore Channel on Chicago’s north side was a barrier to healthy ecosystems and was removed by the Chicago District in 2018. (U.S. Army photo by Mariah Oliveras/Released)

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Photo by: Mariah Oliveras |  VIRIN: 190731-A-VX147-059.JPG