ABSTRACT

FEMA Mitigation Best Practices: Risk MAP Success Story: Clackamus County, Oregon: Can Risk MAP Turn on a Dime?   [open pdf - 35KB]

"As part of a cooperative study between FEMA and the Oregon Department of Geology and Mineral Industries, a reach of the Sandy River located in Clackamas County was slated to be studied using detailed methods during the summer of 2012. Among the central concerns local officials had regarding the Sandy was the river's propensity for flooding and subsequent stream bank erosion, undermining roads and structures along the river in some cases. As a result of the erosion threat, property owners adjacent to the stream had begun to stabilize and fortify the stream's banks. However, the impact and effectiveness of these efforts along the streams banks were unknown. Information on the river's speed and depth during flooding events was critically needed as soon as possible. However, because the river is inaccessible much of the year, the work window for the river was extremely limited."

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Federal Emergency Management Agency: http://www.fema.gov/
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pdf
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