North Branch Sugar River

North Branch Sugar River
The North Branch at Croydon, NH
Location
CountryUnited States
StateNew Hampshire
CountySullivan
TownsGrantham, Croydon, Newport
Physical characteristics
SourceConfluence of Sawyer Brook and Stocker Brook
  locationGrantham
  coordinates43°29′26″N 72°8′8″W / 43.49056°N 72.13556°W / 43.49056; -72.13556
  elevation950 ft (290 m)
MouthSugar River
  location
Newport
  coordinates
43°23′26″N 72°11′43″W / 43.39056°N 72.19528°W / 43.39056; -72.19528
  elevation
761 ft (232 m)
Length10.1 mi (16.3 km)
Basin features
Tributaries 
  leftBog Brook
  rightLittlefield Brook, Swamp Brook, Perkins Brook, Beaver Brook

The North Branch of the Sugar River is a 10.1-mile-long (16.3 km) river located in western New Hampshire in the United States. It is a tributary of the Sugar River, which flows to the Connecticut River, which flows to Long Island Sound.

The North Branch of the Sugar River begins at the confluence of Sawyer Brook and Stocker Brook in the town of Grantham, New Hampshire. The river flows south through the town of Croydon, reaching the Sugar River in the town of Newport. In Croydon, the river's flow is interrupted by Spectacle Pond, a 40-acre (16 ha) two-lobed lake. New Hampshire Route 10 follows the North Branch for nearly its entire length.