Are floods in part a form of land use externality?

Dorner, W. and Porter, M. and Metzka, R. (2008) Are floods in part a form of land use externality? Natural Hazards and Earth System Sciences, 8 (3). pp. 523-532. ISSN 1561-8633

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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 elated 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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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: © Author(s) 2008. This work is licensed under a Creative Commons License. On-line paper will be printed in hardcopy in the future.
Faculty / Department / School: Historic - Faculty of Engineering and Surveying - Department of Agricultural, Civil and Environmental Engineering
Date Deposited: 02 Apr 2008 04:50
Last Modified: 07 Nov 2013 02:59
Uncontrolled Keywords: flood damage; hydrological; hydraulic modelling; economic analysis
Fields of Research : 04 Earth Sciences > 0406 Physical Geography and Environmental Geoscience > 040608 Surfacewater Hydrology
09 Engineering > 0907 Environmental Engineering > 090702 Environmental Engineering Modelling
14 Economics > 1402 Applied Economics > 140205 Environment and Resource Economics
Socio-Economic Objective: D Environment > 96 Environment > 9610 Natural Hazards > 961099 Natural Hazards not elsewhere classified

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