River OR

South Fork Alsea River

Name: South Fork Alsea River
Address: OR, US

Oregon • 44.3063, -123.4936

Length

20 mi

32 km

Elevation

1,636′ → 269′

1,366 ft drop

Stream Order

Large River

Slope

1.32%

69.5 ft/mi

Drainage

63 mi²

163 km²

Avg Flow

206 cfs

1.2 mph velocity

Path to Mouth

67 mi

108 km to ocean

Classification

Headwater

Source Stream

Elevation Profile

Water Quality

Data from EPA Water Quality Portal (USGS, EPA, state agencies).

Data from USGS & NOAA for informational purposes only. More