Neversink Reservoir

Neversink Reservoir was built in 1953 and is part of the Delaware System, the newest of three systems in New York City’s water supply.  The Neversink watershed covers 92.6 mi2 (240 km2) and is a predominantly forested headwater basin with a water residence time of about four months. Reservoir water quality based on Carlson’s Trophic State Index derived from chlorophyll a measurements varies between oligotrophic and mesotrophic.  Both turbidity and total phosphorus levels in Neversink are among the lowest in the entire NYC reservoir system. Recent research in the Neversink basin is focused on understanding carbon sources and how they translate into disinfection by-product formation potential. http://www.nyc.gov/html/dep/html/watershed_protection/neversink.shtml