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East Branch of the Delaware River

East Branch
River
East Branch Delaware River at Margaretville, NY.jpg
East Branch at Margaretville
Country United States
State New York
Region Catskills
County Delaware
Towns Roxbury, Middletown,
Andes, Colchester, Hancock
Part of Delaware River
Tributaries
 - left Beaver Kill, Dry Brook
 - right Platte Kill
Landmark Pepacton Reservoir
Source Unnamed pond
 - location SW of Grand Gorge
 - elevation 1,560 ft (475 m)
 - coordinates 42°21′26″N 74°30′42″W / 42.35722°N 74.51167°W / 42.35722; -74.51167
Mouth Confluence with West Branch
 - location Hancock
 - elevation 880 ft (268 m)
 - coordinates 41°56′20″N 75°16′46″W / 41.93889°N 75.27944°W / 41.93889; -75.27944Coordinates: 41°56′20″N 75°16′46″W / 41.93889°N 75.27944°W / 41.93889; -75.27944
Length 75 mi (121 km)
Basin 828 sq mi (2,145 km2)
Discharge
 - average 1,715 cu ft/s (49 m3/s)
 - max 77,400 cu ft/s (2,192 m3/s)
Delaware headwaters map.png

The East Branch Delaware River, approximately 75 miles (120 km) long in the U.S. state of New York, is one of two branches, along with the West Branch, that join to form the Delaware River. It flows through a mountainous area on the southwestern edge of the Catskill Park. For a long stretch it serves as the Blue Line, the park's boundary. Much of it is paralleled by state highway NY 30.

The river is a popular destination for fly fishing for brown trout. It was impounded just north of Downsville in the mid-20th century to create Pepacton Reservoir, which supplies drinking water to New York City.

In 1881 John Burroughs, a native of the area, published "A Summer Voyage", recounting a solo boat trip down the East Branch from Arkville to Hancock.

It rises in eastern Delaware County, from a small pond next to a gas station on Route 30 just below the divide with the Hudson watershed southwest of the hamlet of Grand Gorge and flows initially SSW, through the town of Roxbury. Its upper course winds through a narrow valley containing the river and Route 30. At the Middletown town line, it turns more to the south, receiving the Bush Kill, whose tributaries drain the town of Halcott, the only part of Greene County in the Delaware's watershed, from the east just outside Arkville. This confluence also puts the Catskill Park Blue Line in the middle of the channel


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