Editing Delaware River (section)

===West Branch of the Delaware===
{{main|West Branch Delaware River}}

The [[West Branch Delaware River|West Branch of the Delaware River]], also called the Mohawk Branch, spans approximately {{convert|90|mi|km}} from the northern [[Catskill Mountains]] to its [[confluence]] with the Delaware River's East Branch at [[Hancock, New York]]. The last {{convert|6|mi|km}} forms part of [[New York–Pennsylvania border|the boundary between New York and Pennsylvania]].

The West Branch rises in [[Schoharie County, New York|Schoharie County]], New York at {{convert|1886|ft}} above sea level, near [[Mount Jefferson (New York)|Mount Jefferson]], and flows tortuously through the plateau in a deep trough. The branch flows generally southwest, entering [[Delaware County, New York|Delaware County]] and flowing through the towns of [[Stamford, New York|Stamford]] and [[Delhi, New York|Delhi]]. In southwestern Delaware County it flows in an increasingly winding course through the mountains, generally southwest. At [[Stilesville, New York|Stilesville]] the West Branch was impounded in the 1960s to form the [[Cannonsville Reservoir]], the westernmost of the reservoirs in the New York City water system. It is the most recently constructed New York City reservoir and began serving the city in 1964. Draining a large watershed of {{convert|455|sqmi}}, the reservoir's capacity is {{convert|95.7|e9USgal|m3}}. This water flows over halfway through the reservoir to enter the {{convert|44|mi|km|adj=on}} West Delaware Tunnel in [[Tompkins, New York|Tompkins]], New York. Then it flows through the aqueduct into the [[Rondout Reservoir]], where the water enters the {{convert|85|mi|km}} [[Delaware Aqueduct]], that contributes to roughly 50% of the city's drinking water supply. At [[Deposit (town), New York|Deposit]], on the border between [[Broome County, New York|Broome]] and Delaware counties, it turns sharply to the southeast and is paralleled by [[New York State Route&nbsp;17]]. It joins the East Branch at {{convert|880|ft}} above sea level at [[Hancock (town), New York|Hancock]] to form the Delaware.