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Fact Sheet 2005–3104
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Prepared in Cooperation with the National Oceanic and Atmospheric Administration

A NOAA–USGS Demonstration Flash-Flood and Debris-Flow Early-Warning System

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Once the smoke clears from a wildfire, the danger is not over!! Other hazards, such as flash floods and debris flows, now become the focus. Just a small amount of rainfall on a burn scar can lead to flash floods and debris flows. The powerful force of rushing water, soil, and rock, both within the burned area and downstream, can destroy culverts, bridges, roadways, and structures. Flash floods and debris flows can thus cause serious injury or death if care is not taken. The National Oceanic and Atmospheric Administration (NOAA) and the United States Geological Survey (USGS) have established a demonstration flash-flood and debris-flow early-warning system for recently burned areas in southern California. The demonstration project covers eight counties within southern California and will begin in the autumn of 2005.

Version 1.0

Posted September 2005

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