The East Branch Delaware River is one of two branches that form the Delaware River. It is approximately 75 mi (121 km) long, and flows through the U.S. state of New York. It winds through a mountainous area on the southwestern edge of Catskill Park in the Catskill Mountains for most of its course, before joining the West Branch along the northeast border of Pennsylvania with New York. Much of it is paralleled by State Route 30.
The river was impounded just north of Downsville in the mid-20th century to create Pepacton Reservoir, part of the New York City water supply system supplying drinking water to the City. It is a popular destination for fly fishing for brown trout.
