Are floods in part a form of land use externality?

W Dorner; Mark Porter; R Metzka

doi:10.5194/nhess-8-523-2008

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Are floods in part a form of land use externality?

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Are floods in part a form of land use externality?

W Dorner, Mark Porter and R Metzka

Natural Hazards and Earth System Sciences, Vol.8(3), pp.523-532

2008

DOI: https://doi.org/10.5194/nhess-8-523-2008

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Abstract

river flow

catchment

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.

Details

Title: Are floods in part a form of land use externality?
Authors: W Dorner (Author) - University of Applied Sciences Deggendorf, Germany
Mark Porter (Author) - University of Southern Queensland
R Metzka (Author) - University of Southern Queensland
Publication details: Natural Hazards and Earth System Sciences, Vol.8(3), pp.523-532
Publisher: Copernicus GmbH
Date published: 2008
DOI: 10.5194/nhess-8-523-2008
ISSN: 1561-8633
Copyright note: Copyright © 2008 The Author. This work is licensed under a Creative Commons License.
Organisation Unit: University of the Sunshine Coast, Queensland
Language: English
Record Identifier: 99449535702621
Output Type: Journal article