Tygart Valley River

Tygart Valley River
The Tygart Valley River at the mouth of the Buckhannon River (just above center). Photo taken along the B&O Railroad between Belington and Philippi.
Map of the Monongahela River basin, with the Tygart Valley River highlighted
Location
CountryUnited States
StateWest Virginia
CountiesBarbour, Marion, Pocahontas, Taylor, Randolph
Physical characteristics
SourceAllegheny Mountains
  locationPocahontas County, WV
  coordinates38°28′06″N 79°58′51″W / 38.46833°N 79.98083°W / 38.46833; -79.98083
  elevation4,540 ft (1,380 m)
MouthMonongahela River
  location
Fairmont, WV
  coordinates
39°27′54″N 80°09′11″W / 39.46500°N 80.15306°W / 39.46500; -80.15306
  elevation
863 ft (263 m)
Length135 mi (217 km)
Basin size1,329 sq mi (3,440 km2)
Discharge 
  locationmouth
  average2,855.07 cu ft/s (80.847 m3/s) (estimate)
Basin features
Tributaries 
  leftMiddle Fork River, Buckhannon River
  rightConley Run

The Tygart Valley River — also known as the Tygart River — is a principal tributary of the Monongahela River, approximately 135 miles (217 km) long, in east-central West Virginia in the United States. Via the Monongahela and Ohio rivers, it is part of the watershed of the Mississippi River, draining an area of 1,329 square miles (3,440 km2) in the Allegheny Mountains and the unglaciated portion of the Allegheny Plateau.