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| Titel |
Are floods in part a form of land use externality? |
| VerfasserIn |
W. Dorner, M. Porter, R. Metzka |
| 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. 3 ; Nr. 8, no. 3 (2008-05-27), S.523-532 |
| Datensatznummer |
250005530
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| Publikation (Nr.) |
 copernicus.org/nhess-8-523-2008.pdf |
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| Zusammenfassung |
| Peak and volume of river flows are functions of the catchment surface characteristics. This means that any
impacts to the run-off regime (for example surface sealing and river training) could affect people and land
users in the lower system. The costs of flood defence or compensation of damages are usually not included
in the economic calculation of the upstream land owner or land user. In economic terms these effects are
referred to as unidirectional externalities. This paper presents a methodology to identify externalities
related to land use and run-off and describes the relevant cause-effect relations and how they can be
modelled. The Herzogbach is a small tributary of the Danube River in Lower Bavaria. It is located in a
rural area, dominated by intensive farming practices. A combination of hydrological and hydraulic modelling
provided the core of the project methodology to allow the interpretation of economic data. Comparisons of
damage estimates resulting from different hydrological scenarios based on different land uses, and flood mitigation
costs were used to show the economic significance of human impacts. |
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