East Gallatin River

The East Gallatin River flows 42 miles (68 km) in a northwesterly direction through the Gallatin valley, Gallatin County, Montana. Rising from the confluence of Rocky Creek and several other small streams, the East Gallatin begins about one mile (1.6 km) east of downtown Bozeman, Montana. The river joins the main stem of the Gallatin River 2.3 miles (3.7 km) north of Manhattan, Montana. Throughout its course, the river traverses mostly valley floor ranch and farm land with typical summer flows of approximately 50 cu ft/s (1.4 m3/s).

East Gallatin River
East Gallatin River near Belgrade, Montana
Location of mouth
Location
CountryUnited States
StateMontana
CountyGallatin
Physical characteristics
Source 
  coordinates45°39′51″N 110°57′10″W
Mouth 
  location
Nixon Gap
  coordinates
45°53′30″N 111°20′01″W
  elevation
4,157 feet (1,267 m)
Length42 miles (68 km)
Basin size148 square miles (380 km2) (Gallatin Range, Bridger Range)
Discharge 
  locationBelgrade
  average137 cu/ft. per sec.
Basin features
River systemMissouri River
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