Yeah same in Philadelphia, the rivers (Delaware and Schuylkill) used to be so polluted they didn't support life, but now there are people catching 45-inch muskies in urban rivers (https://patch.com/pennsylvania/norristown/30-pound-muskie-ca...). The revival of the river has been well documented (e.g. https://whyy.org/articles/the-death-of-the-delaware-river/).