Browse Topics
Hydrologic Hazards

Structural Approaches to Hazard Reduction

There has been a long tradition of attempting to reduce flood losses [view report] in the United States through structural measures. Dams are designed to reduce flood discharges and river stages, whereas levees are designed to contain river discharges from spilling over to floodplains. There is concern for the safety of dams, principally owing to the possibility of large floods exceeding the capacity [view report] of outlet structures. An instructive example of a challenge in flood risk reduction is the American River case in California, where climate change has affected the hydrologic history and a combination of structural and nonstructural flood risk reduction [view report] is being considered.

In August 2005 Hurricane Katrina caused flooding in the New Orleans region that resulted in the loss of hundreds of lives and catastrophic property damage, ranking it among the largest natural disasters in U.S. history. In October 2005, the U.S. Army Corps of Engineers formed the Interagency Performance Evaluation Task Force (IPET) to conduct several scientific and engineering studies to evaluate the performance of its hurricane protection system. At the request of the Assistant Secretary of the Army for Civil Works, the National Academies formed a committee to review IPET’s work. This committee issued its first report [view report] and is scheduled to issue two more reports in 2006.
Books Related to Structural Approaches to Hazard Reduction
Click on a book for more information.


Improving American River Flood Frequency Analyses,



Risk Analysis and Uncertainty in Flood Damage Reduction Studies,



Structural Performance of the New Orleans Hurricane Protection System During Hurricane Katrina: Letter Report,



Second Report of the National Academy of Engineering/National Research Council Committee on New Orleans Regional Hurricane Protection Projects,



Third Report of the NAE/NRC Committee on New Orleans Regional Hurricane Protection Projects ,



The New Orleans Hurricane Protection System: Assessing Pre-Katrina Vulnerability and Improving Mitigation and Preparedness,











Explore the Books: