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Driessen, T. L. A.; Ledden, M. (2013)
Publisher: Copernicus Publications on behalf of the TU Delft
Languages: English
Types: Article
Subjects: DOAJ:Hydraulic Engineering, Water supply for domestic and industrial purposes, T, DOAJ:Technology and Engineering, TD201-500, TC1-978, Hydraulic engineering, Environmental technology. Sanitary engineering, Technology, TD1-1066
The objective of this paper is to describe the impact of climate change on the Mississippi River flood hazard in the New Orleans area. This city has a unique flood risk management challenge, heavily influenced by climate change, since it faces flood hazards from multiple geographical locations (e.g. Lake Pontchartrain and Mississippi River) and multiple sources (hurricane, river, rainfall). Also the low elevation and significant subsidence rate of the Greater New Orleans area poses a high risk and challenges the water management of this urban area. Its vulnerability to flooding became dramatically apparent during Hurricane Katrina in 2005 with huge economic losses and a large number of casualties. <br> A SOBEK Rural 1DFLOW model was set up to simulate the general hydrodynamics. This improved model includes two important spillways that are operated during high flow conditions. Subsequently, a weighted multi-criteria calibration procedure was performed to calibrate the model for high flows. Validation for floods in 2011 indicates a very reasonable performance for high flows and clearly demonstrates the necessity of the spillways. <br> 32 different scenarios are defined which includes the relatively large sea level rise and the changing discharge regime that is expected due to climate change. The impact of these scenarios is analysed by the hydrodynamic model. Results show that during high flows New Orleans will not be affected by varying discharge regimes, since the presence of the spillways ensures a constant discharge through the city. In contrary, sea level rise is expected to push water levels upwards. The effect of sea level rise will be noticeable even more than 470 km upstream. Climate change impacts necessitate a more frequent use of the spillways and opening strategies that are based on stages. Potential alternatives on how to cope with the flood hazard of this river in the long term, such as river widening and large-scale redistribution of the flow through diversions, are proposed.
  • The results below are discovered through our pilot algorithms. Let us know how we are doing!

    • Barry, J.: Rising Tide - The Great Mississippi Flood of 1927 and How it Changed America, Simon & Schuster, New York, 1998.
    • Bourne Jr., J. K.: Gone with the water, National Geographic Magazine, available at: http://ngm.nationalgeographic.com/ngm/0410/ feature5/ (last access: May 2009), 2004.
    • Deltares: Design and analysis tools - SOBEK suite, available at: http://www.deltaressystems.com/hydro/product/108282/ sobek-suite (last access: October 2011), 2010.
    • Ericson, J., Vo¨ro¨smarty, C., Dingman, S., Ward, L., and Meybeck, M.: Effective sea-level rise and deltas - Causes of change and human dimension implications, Global Planet. Change, 50, 63- 82, 2006.
    • Nash, J. I. and Sutcliffe, I. V.: River flow forecasting through conceptual models: Part I - A discussion of principles, J. Hydrol., 10, 282-290, 1970.
    • Nicholls, R. J., Wong, P. P., Burkett, V. R., Codignotto, J. O., Hay, J. E., McLean, R. F., Ragoonaden, S., and Woodroffe, C. D.: Coastal systems and low-lying areas. Climate Change 2007: Impacts, Adaptation and Vulnerability. Contribution of Working Group II to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change, Cambridge University Press, Cambridge, UK, 315-356, 2007.
    • NOAA: Sea Levels Online, available at: http://tidesandcurrents. noaa.gov/sltrends/sltrends.shtml, last access: 28 August 2011.
    • U.S. Army Corps of Engineers Washington: Water Resource Policies and Authorities Incorporating Sea-level Change Considerations in Civil Works Programs, available at: http://140.194.76. 129/publications/eng-circulars/ec1165-2-211/entire.pdf (last access: 28 August 2011), 2009.
    • U.S. Army Corps of Engineers: Discharge Data; Mississippi River at Tarbert Landing, MS, available at: http://www2.mvn.usace. army.mil/cgi-bin/wcmanual.pl?01100, last access: 11 October 2011.
    • USGCRP: Climate change impacts on the United States - The potential consequences of climate variability and change, US Global Change Research Program, 2000.
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