South Fork Coquille River

South Fork Coquille River
The lower tier of Coquille River Falls at low water
Location of the mouth of the South Fork Coquille River in Oregon
Location
CountryUnited States
StateOregon
RegionCoos County
CitiesPowers, Broadbent, Myrtle Point
Physical characteristics
SourceSouthern Oregon Coast Range
  locationUnnamed ridge, north of Mount Bolivar
  coordinates42°50′24″N 123°52′30″W / 42.84000°N 123.87500°W / 42.84000; -123.87500
  elevation3,501 ft (1,067 m)
MouthCoquille River
  location
Myrtle Point
  coordinates
43°04′49″N 124°08′29″W / 43.08028°N 124.14139°W / 43.08028; -124.14139
  elevation
13 ft (4.0 m)
Length62.8 mi (101.1 km)
Basin size288 sq mi (750 km2)
Discharge 
  locationPowers
  average778 cu ft/s (22.0 m3/s)
  minimum7.2 cu ft/s (0.20 m3/s)
  maximum48,900 cu ft/s (1,380 m3/s)
Basin features
Tributaries 
  leftJohnson Creek, Salmon Creek, Dement Creek, Catching Creek
  rightWooden Rock Creek, Coal Creek, Woodward Creek, Middle Fork Coquille River

The South Fork Coquille River is the longest tributary of the Coquille River in coastal Oregon in the United States. From its headwaters in the Southern Oregon Coast Range, the river flows northwest to join the North Fork Coquille River at Myrtle Point, forming the main stem Coquille. The South Fork is about 63 miles (101 km) long, and its watershed drains roughly 288 square miles (750 km2) of rural Coos County.