The Old and New Croton Aqueduct System (1887) Map/engraving from Scientific American (June 4, 1887) showing both the Old (dotted line) and New (solid line) Croton Aqueduct routes from Putnam County to Manhattan. A comprehensive overview of the entire water supply infrastructure. Date: June 1887 Source: Scientific American / Wikimedia Commons License: Public domain — NOTE: This entry was genera…