Sauk River (Washington)

Sauk River
The Sauk River along SR530, north of Darrington, Washington
Sauk River watershed (Interactive map)
Location
CountryUnited States
StateWashington
CountySkagit, Snohomish
Physical characteristics
SourceNorth Fork and South Fork confluence
  locationCascade Range
  coordinates48°5′59″N 121°23′28″W / 48.09972°N 121.39111°W / 48.09972; -121.39111
  elevation1,204 ft (367 m)
MouthSkagit River
  coordinates
48°28′53″N 121°37′12″W / 48.48139°N 121.62000°W / 48.48139; -121.62000
  elevation
217 ft (66 m)
Length45 mi (72 km)
Basin size714 sq mi (1,850 km2)
Discharge 
  locationUSGS gage 12189500 near Sauk, WA
  average4,332 cu ft/s (122.7 m3/s)
  minimum578 cu ft/s (16.4 m3/s)
  maximum69,900 cu ft/s (1,980 m3/s)
DesignatedNovember 10, 1978

The Sauk River is a tributary of the Skagit River, approximately 45 miles (72 km) long, in northwestern Washington in the United States. It drains an area of the high Cascade Range in the watershed of Puget Sound north of Seattle. The river is a popular destination for fly fishing. It is a National Wild and Scenic River.

Its two forks rise in the Cascades in eastern Snohomish County, in the Glacier Peak Wilderness and join to form the mainstem Sauk River at Bedal Peak. From there the river flows northwest from there through a remote section of the Mount Baker-Snoqualmie National Forest to Darrington, then north to join the Skagit River from the south at Rockport. The Sauk River receives the Suiattle River from the east approximately 12 miles (19 km) south of Rockport and the White Chuck River just above Darrington. Another important tributary is Clear Creek, which joins the Sauk just above Darrington.

At Darrington the Sauk River comes so close to the head of the North Fork Stillaguamish River that boats used to portage across the divide.

The name "Sauk" comes from the Sah-kee-ma-hu (Sauk-Suiattle tribe), a group related to the Skagit tribes, not from the Sauk tribe of the Midwestern U.S.