Pedernales River

Pedernales River
The Pedernales River in Pedernales Falls State Park
Location of Pedernales River, Texas
Location
CountryUnited States
StateTexas
RegionEdwards Plateau, Texas Hill Country
Physical characteristics
SourceKerr County, Texas
  coordinates30°15′45″N 99°19′31″W / 30.26250°N 99.32528°W / 30.26250; -99.32528
  elevation690 m (2,260 ft)
MouthLake Travis, Travis County, Texas
  coordinates
30°25′51″N 98°03′36″W / 30.43083°N 98.06000°W / 30.43083; -98.06000
  elevation
197 m (646 ft)
Length170 km (110 mi)
Basin size3,297 km2 (1,273 sq mi)
Discharge 
  average2.3 m3/s (81 cu ft/s)

The Pedernales River (/ˌpɜːrdəˈnælɪs/ PUR-də-NAL-iss) is a tributary of the Colorado River, approximately 106 miles (171 km) long, in Central Texas in the United States. It drains an area of the Edwards Plateau, flowing west to east across the Texas Hill Country west of Austin. The name "Pedernales", first used in the middle 18th century, comes from a Spanish word for the flint rocks characteristic of the riverbed.