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| Titel |
Assessing flood risk for a rural detention area |
| VerfasserIn |
S. Förster, B. Kuhlmann, K.-E. Lindenschmidt, A. Bronstert |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1561-8633
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| Digitales Dokument |
URL |
| Erschienen |
In: Natural Hazards and Earth System Science ; 8, no. 2 ; Nr. 8, no. 2 (2008-04-10), S.311-322 |
| Datensatznummer |
250005411
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| Publikation (Nr.) |
 copernicus.org/nhess-8-311-2008.pdf |
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| Zusammenfassung |
Flood detention areas serve the primary purpose of controlled water storage
during large flood events in order to decrease the flood risk downstream
along the river. These areas are often used for agricultural production.
While various damage estimation methods exist for urban areas, there are
only a few, most often simpler approaches for loss estimation in rural
areas. The loss assessment can provide an estimate of the financial
provisions required for the farmers' compensation (e.g., in the context of
cost-benefit analyses of detention measures).
Flood risk is a combination of potential damage and probability of flooding.
Losses in agricultural areas exhibit a strong seasonal pattern, and the
flooding probability also has a seasonal variation. In the present study,
flood risk is assessed for a planned detention area alongside the Elbe River
in Germany based on two loss and probability estimation approaches of
different time frames, namely a monthly and an annual approach. The results
show that the overall potential damage in the proposed detention area
amounts to approximately 40 000 € a−1, with approximately equal
losses for each of the main land uses, agriculture and road infrastructure.
A sensitivity analysis showed that the probability of flooding (i.e., the
frequency of operation of the detention area) has the largest impact on the
overall flood risk. |
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