Cedar River Flooding Information
USGS gage data, map, and alert phases, and recent high flows

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Provisional flood phase: 1

USGS Gage Name

Time, Date

Stage
(feet)

Flow
(c.f.s.)

Flow Change
(c.f.s./hr)

Cedar River near Landsburg (external link) 6:00 PM, 11/21/2009 2.90 1400 0
Cedar River at Renton (external link) 6:15 PM, 11/21/2009 10.06 1420 +30

Notes:

This data was requested from USGS at 11/21/2009 6:42:38 PM.

The next request for USGS data is expected in approximately 7 minutes from when this page was loaded.

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. 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

Cedar River near Landsburg: Flow 1400.00 c.f.s. at 6:42 PM (provisional)Cedar River at Renton: Flow 1420.00 c.f.s at 6:42 PM (provisional)
Flood Phase Information
Phase Flow at Cedar River gage near Landsburg Description Condition
1 1,000 c.f.s. Internal Alert  
2 2,800 c.f.s. Minor Flooding Jones Rd near 156th SE may overtop.
3 3,500 c.f.s. Moderate Flooding Lower Dorre Don and Byers Rd may overtop.
4 4,200 c.f.s. Extreme Flooding

Some residential areas may experience dangerous high flows and home flooding. Renton Airport experiences flooding. SR 169 may overtop and close.



Cedar River gage map - flooding
Recent High Flow Data
High Flow Event Cedar River near Landsburg Cedar River near Renton
January 7-8, 2009 7,870 c.f.s. * 9,470 c.f.s. *
November 7, 2006 4,670 c.f.s. 6,090 c.f.s.
February, 1996 5,860 c.f.s. 7,520 c.f.s.
November, 1995 6,580 c.f.s. 7,650 c.f.s.
November, 1990 10,800 c.f.s. 10,600 c.f.s.

*provisional data

The U.S. Army Corps of Engineers also provides access to the provisional gage data:

Cedar River near Landsburg (external link)
Cedar River near Renton (external link)

More Cedar River Flood Documentation

Flood Photo Viewer

Other Flood-related Information

» Return to the The Flood Warning System Page
» Visit King County Flooding Services
» See other Cedar River Topics