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Association of State Flood Plain Managers

Association of State Flood Plain Managers Association of State Flood Plain Managers
Association of State Flood Plain Managers
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Flood Mapping for the Nation
Monday, March 9, 2020

Since 1969, the US has invested $6.6 billion ($10.6 billion in 2019 dollars) in flood hazard mapping, resulting in nearly $22 billion in losses avoided. But we are far from completing the job, as only 1/3 of the nation's streams have currently been mapped.

In its Flood Mapping for the Nation report, ASFPM estimates the cost to complete flood mapping in the US at $3.2 billion to $11.8 billion. The steady-state cost to then maintain accurate and up-to-date flood maps ranges from $107 million to $480 million annually. Ultimately, floodplain mapping is a sound investment that saves lives, reduces flood losses, and keeps communities thriving, all at a 2-to-1 cost benefit for taxpayers.

Congress must decide how quickly we need to have flood mapping available to every community, and then set a level of funding that will achieve that goal.

For more information go to Flood Science Center website.

 Adobe PDF Flood Mapping for the Nation (2020)

  Adobe PDF Flood Mapping for the Nation Infographic





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