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New: Click on a gage name for graph and additional data.

USGS Gage Name

Time, Date



Flow Change

South Fork Skykomish River at Skykomish 9:46 PM, 4/22/2017 5.74 n/a +0.06 (stage, in feet)
Skykomish River near Gold Bar 12:30 AM, 4/23/2017 8.08 6,020 +70


This data was requested from USGS/Northwest River Forecast Center at 4/23/2017 12:45:54 AM.

c.f.s. = cubic feet per second.
King County provides funding to the United States Geological Survey (USGS) to support the operation and maintenance of river and stream gages and related systems. South Fork Skykomish River at Skykomish gage data courtesy of Snohomish County. The term "gage" is defined as an instrument for measuring or testing. USGS uses the term "streamgage" to describe their equipment that obtains estimates of the amount of water flowing in streams and rivers. More information about USGS streamgages

Flood Phase Information
Phase Stage at SF Skykomish River gage in Skykomish Description Condition
1 7.5 feet Internal Alert  
2 9 feet Minor Flooding River bank erosion and flood debris problems are possible.
3 11 feet Moderate Flooding Riverbank erosion and flood debris problems are likely. Flooding likely to occur in low-lying areas such as Skylandia and the west end of Timberlane Village.
4 13 feet Severe Flooding Widespread flooding expected including areas typically protected by levees.

The flood phase definitions relate to the Skykomish gage operated by Snohomish County since 1999. Water surface readings from the new gage (USGS 12131500 South Fork Skykomish River at Skykomish, WA) show different gage heights for the same river level. These 4 flood phase thresholds equate to gage heights of roughly 21.5, 23, 25, and 27 feet at the new USGS gage. The USGS will be adjusting their flow estimates from the new gage during the 2016-2017 flood season.

Skykomish River Gage Map
Recent High Flow and Stage Data
High Flow Event Skykomish River near Gold Bar South Fork Skykomish River at Skykomish
November 17, 2015 102,000 c.f.s.* 15.62 ft.*
January 17, 2011 63,900 c.f.s. 13.81 ft.
January 8, 2009 74,000 c.f.s. 12.67 ft.
November 6-7, 2006 129,000 c.f.s. 16.49 ft.
January 18, 2005 74,600 c.f.s. 13.15 ft.
October 30, 2003 86,500 c.f.s. 12.15 ft.
November, 1990 102,000 c.f.s.

*provisional data

Snohomish County Flood Warning Information (external link)

Other Flood-related Information

» Snoqualmie River Flooding Information
» Return to the The Flood Warning System Page
» Visit King County Flooding Services