Cedar River (WA) at Renton, WA
River level and flood forecast · King County
The river is 4.4 ft below flood stage (13 ft).
Forecast to hold near 8.6 ft through Mon, Oct 19, 11 PM.
Flow: 319 cubic feet per second (USGS).
The last 7 days and the forecast
NWS forecast issued Mon, Oct 12, 8:24 AM. Forecasts change as rain falls and as upstream water arrives.
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An email when the National Weather Service forecasts Cedar River (WA) at Renton to flood, when it floods, and when it's over.
Flood stages
| Major flood stage | 16 ft |
| Moderate flood stage | 14.5 ft |
| Flood stage | 13 ft |
| Action stage | 10.4 ft |
| Record crest (November 24, 1990) | 17.13 ft |
What floods at each level
From the National Weather Service, highest first.
- 16 ftthe Cedar River will cause major flooding in Renton, especially at the Renton Airport. Flooding will occur all along the river including headwaters, tributaries, and other streams within and near the Cedar River Basin.
- 14.5 ftthe Cedar River will flood areas of Renton including the Renton Airport.
- 13 ftthe Cedar River will cause minor flooding along the river in Renton.
- 11.3 ftthe Cedar River will locally overflow its banks, causing some areas of standing water, especially upstream of Maple Valley in the Dorre Don area.
Highest crests on record
- 17.13 ft — November 24, 1990
- 16.27 ft — January 8, 2009
- 16.04 ft — November 30, 1995
- 16 ft — February 9, 1996
- 14.14 ft — December 4, 1975
Recent crests: 13.4 ft (December 9, 2015) · 11.67 ft (January 5, 2015) · 12.49 ft (March 11, 2014) · 10.92 ft (April 7, 2013) · 11.36 ft (January 30, 2012)
Up and down the river, and nearby
Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (RNTW1); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.