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September 26, 2016

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DEP Workers Repoint Massive Stones on Merriman Dam Spillway in Ulster County

Caption: A team of workers from the New York City Department of Environmental Protection last week repointed the massive stones on the spillway of Merriman Dam at Rondout Reservoir in Ulster County. The repointing helps keep the 600-foot-long spillway in good condition by filling gaps in the masonry that developed over decades of freezing and thawing. The spillway is made of large granite stones that range from approximately 1–4 feet wide. Rondout Reservoir conveys drinking water to New York City through the 85-mile-long Delaware Aqueduct, the longest tunnel in the world.




DEP manages New York City’s water supply, providing more than one billion gallons of high quality water each day to more than 9.5 million New Yorkers. This includes more than 70 upstate communities and institutions in Ulster, Orange, Putnam and Westchester counties who consume an average of 110 million total gallons of drinking water daily from New York City’s water supply system. This water comes from the Catskill, Delaware, and Croton watersheds that extend more than 125 miles from the City, and the system comprises 19 reservoirs, three controlled lakes, and numerous tunnels and aqueducts. DEP has nearly 6,000 employees, including almost 1,000 scientists, engineers, surveyors, watershed maintainers and other professionals in the upstate watershed. In addition to its $70 million payroll and $157 million in annual taxes paid in upstate counties, DEP has invested more than $1.7 billion in watershed protection programs—including partnership organizations such as the Catskill Watershed Corporation and the Watershed Agricultural Council—that support sustainable farming practices, environmentally sensitive economic development, and local economic opportunity. In addition, DEP has a robust capital program with nearly $14 billion in investments planned over the next 10 years that will create up to 3,000 construction-related jobs per year. For more information, visit, like us on Facebook, or follow us on Twitter.

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NYC Department of Environmental Protection
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