Gilboa Dam is located in the Catskill Mountains, about 194km north of New York City. The dam impounds the Schoharie Reservoir which forms part of New York City’s Catskill Water Supply System. The reservoir accounts for about 16% of the city’s water needs per year and serves a population of about nine million people. https://www.water-technology.net/projects/gilboa-dam-reconstruction-new-york/