Karl Erich Lindenschmidt, Robert Harrison, Martina Baborowski
DOI: 10.4236/jep.2010.12017   PDF    HTML     6,480 Downloads   10,856 Views   Citations

Abstract

Emergency retention basins (ERB) are diked enclosures alongside rivers into which water from the main river channel is diverted during extreme floods. If the basins are operated during extreme flooding, two negative environmental impacts may occur: 1) contamination of the soils due to their transport by suspended sediments to the basin and 2) depletion of dissolved oxygen in the basin water. A computer-based methodology is presented which was used to assess the environmental risk exhibited by the operation of an ERB system proposed for the Elbe River in Germany. The August 2002 extreme flood event was used as a test case. For such a flood, the results showed that there is a 77% risk that dissolved oxygen levels fall below 2 mg/L in the water and a 48% chance of exceeding the inspection value of 500 mg zinc/kg in the soil.

Keywords

Environmental Risk, Inundation, Retention Basins, Water Quality, Contaminated Soils, Quasi-2D Model

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Conflicts of Interest

The authors declare no conflicts of interest.

References

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