West Branch Upper Ammonoosuc River

West Branch Upper Ammonoosuc River
West Branch Upper Ammonoosuc River is located in New Hampshire
West Branch Upper Ammonoosuc River
West Branch Upper Ammonoosuc River is located in the United States
West Branch Upper Ammonoosuc River
Location
CountryUnited States
StateNew Hampshire
CountyCoos
Township and cityKilkenny, Berlin
Physical characteristics
SourceMount Cabot
 • locationKilkenny
 • coordinates44°30′30″N 71°24′19″W / 44.50833°N 71.40528°W / 44.50833; -71.40528
 • elevation3,100 ft (940 m)
MouthUpper Ammonoosuc River
 • location
Berlin
 • coordinates
44°29′51″N 71°18′26″W / 44.49750°N 71.30722°W / 44.49750; -71.30722
 • elevation
1,289 ft (393 m)
Length6.1 mi (9.8 km)
Basin features
Tributaries 
 • leftNo. 9 Brook, Cold Brook
 • rightSpring Brook

The West Branch of the Upper Ammonoosuc River is a 6.1-mile-long (9.8 km)[1] river in northern New Hampshire in the United States. It is a tributary of the Upper Ammonoosuc River and part of the Connecticut River watershed. For most of its length, it is within the White Mountain National Forest.

The West Branch rises in the township of Kilkenny, New Hampshire, in a basin on the east side of Mount Cabot, the highest peak in the Pilot Range. The river flows east into Berlin, passing the Berlin National Fish Hatchery at York Pond before joining the Upper Ammonoosuc River.