Heart River (North Dakota)

Heart River
The Heart River, near Mandan, North Dakota, 1949.
A map of the Missouri River watershed, highlighting the Heart River.
Location
CountryUnited States
StateNorth Dakota
Physical characteristics
SourceNear Saddle Butte
  locationBelfield, Billings County
  coordinates46°56′13″N 103°13′49″W / 46.93694°N 103.23028°W / 46.93694; -103.23028
  elevation2,740 ft (840 m)
MouthMissouri River
  location
Mandan, Morton County
  coordinates
46°46′03″N 100°50′31″W / 46.76750°N 100.84194°W / 46.76750; -100.84194
  elevation
1,624 ft (495 m)
Length180 mi (290 km)
Basin size3,370 sq mi (8,700 km2)
Discharge 
  locationMandan, about 3 mi (4.8 km) above the mouth
  average269 cu ft/s (7.6 m3/s)
  minimum0 cu ft/s (0 m3/s)
  maximum30,500 cu ft/s (860 m3/s)
Basin features
Tributaries 
  leftGreen River, Missouri River

The Heart River is a tributary of the Missouri River, approximately 180 miles (290 km) long, in western North Dakota, United States.