West Branch Delaware River

West Branch
Mohock Branch
West Branch flowing under the Hamden Covered Bridge
Map of the upper Delaware River watershed, showing major tributaries
Location
CountryUnited States
StateNew York
RegionCatskills
CountiesSchoharie, Delaware
TownsStamford, Delhi, Hancock, Deposit
Physical characteristics
SourceUnnamed pond
 • locationNorth of Mount Jefferson
 • coordinates42°27′16″N 74°36′01″W / 42.45444°N 74.60028°W / 42.45444; -74.60028[1]
MouthDelaware River
 • location
Hancock
 • coordinates
41°56′20″N 75°16′45″W / 41.9389755°N 75.2790615°W / 41.9389755; -75.2790615[1]
 • elevation
883 ft (269 m)[1]
Length90 mi (140 km)
Basin size666 sq mi (1,720 km2)[2]
Discharge 
 • locationWalton
 • average469 cu ft (13.3 m3)
 • minimum12 cu ft (0.34 m3)
 • maximum28,600 cu ft (810 m3)
Discharge 
 • locationHale Eddy
 • average780 cu ft (22 m3)
 • minimum17 cu ft (0.48 m3)
 • maximum43,400 cu ft (1,230 m3)
Basin features
River systemDelaware River
Tributaries 
 • leftLittle Delaware River
 • rightWest Brook, Oquaga Creek

The West Branch Delaware River is one of two branches that form the Delaware River. It is approximately 90 mi (144 km) long, and flows through the U.S. states of New York and Pennsylvania. It winds through a mountainous area of New York in the western Catskill Mountains for most of its course, before joining the East Branch along the northeast border of Pennsylvania with New York.[2] Midway or so it is empounded by the Cannonsville Dam to form the Cannonsville Reservoir, both part of the New York City water supply system for delivering drinking water to the City.[3][4]

  1. ^ a b c "West Branch Delaware River". Geographic Names Information System. United States Geological Survey, United States Department of the Interior. Retrieved 2019-05-24.
  2. ^ a b "USGS 0142712905 W BR DELAWARE RIVER AT MOUTH AT HANCOCK PA". usgs.gov. usgs. 2019. Retrieved 24 May 2019. data
  3. ^ "Cannonsville Reservoir". Geographic Names Information System. United States Geological Survey, United States Department of the Interior. Retrieved 2018-09-23.
  4. ^ "Cannonsville Dam". Geographic Names Information System. United States Geological Survey, United States Department of the Interior. Retrieved 2018-09-23.