Risk-based design of flood defence systems: a preliminary analysis of the optimal protection level for the New Orleans metropolitan area

2009 ◽  
Vol 2 (3) ◽  
pp. 170-181 ◽  
Author(s):  
S.N. Jonkman ◽  
M. Kok ◽  
M. van Ledden ◽  
J.K. Vrijling
Author(s):  
Chester G. Wilmot ◽  
Nandagopal Meduri

A review of practice in hurricane evacuation modeling reveals that the criteria determining the delineation of hurricane evacuation zones have not been clearly defined. In addition, there is no recommended procedure with which to establish hurricane evacuation zones once criteria have been accepted. A set of criteria has been adopted in this paper to design a procedure that mechanically establishes a recommended set of hurricane evacuation zones for an area. The procedure, which is based on a geographic information systems platform, is described, and its use is demonstrated for establishing hurricane evacuation zones for the northern part of the New Orleans, Louisiana, metropolitan area on the north shore of Lake Pontchartrain. The procedure can be applied to any area, and although it is specifically directed at identifying evacuation zones for hurricanes, it could be used for any emergency in which flooding is the major hazard, or it could be adapted to other emergency situations for which evacuation is an appropriate response.


Home Free ◽  
2020 ◽  
pp. 18-32
Author(s):  
David S. Kirk

The chapter describes the devastation to New Orleans and the Louisiana Gulf Coast inflicted by Hurricane Katrina. In Orleans Parish, 71.5 percent of housing units suffered some damage following Hurricane Katrina, with 42 percent severely damaged. The extent of housing destruction was similar in adjacent parishes of the wider New Orleans metropolitan area. Consequently, many prisoners released soon after Katrina could not go back to their old neighborhoods, as they normally would have done. Typically, 75 percent of individuals released from prison return to their former parish of residence. In the first six months after Katrina, just 50 percent returned to their home parish. Thus, this chapter shows that Hurricane Katrina fundamentally altered prevailing geographic patterns of prisoner reentry in Louisiana, affecting residential change and residential mobility for this population.


2007 ◽  
Vol 2 (2) ◽  
pp. 188-209 ◽  
Author(s):  
Anna J. Wesselink ◽  
Wiebe E. Bijker ◽  
Huib J. de Vriend ◽  
Maarten S. Krol

This article shows how Dutch technological culture has historically dealt with and developed around vulnerability with respect to flooding and indicates recent developments in attitude towards the flood threat. The flooding of New Orleans in the wake of Hurricane Katrina temporarily made the Dutch public worry about the flood defense infrastructure in the Netherlands, exemplified by the Delta Works. Could this happen in the Netherlands? After the flooding disaster of 1953, a system of large dams was built to offer safety from flooding with—in theory at least—protection levels that are much higher than in New Orleans. In the public's perception the protection offered is absolute. In practice not all flood defense structures are as secure as they are supposed to be, but their upgrading takes time and money. Katrina has served as a reminder of what is at stake: Can the Dutch afford to take another 10 years to restore the protection level of their flood defenses? Calls for pride in clever engineering are the latest in a continuing debate on the best way to continue life below sea level.


Sign in / Sign up

Export Citation Format

Share Document