Rasterised Water Demands Methodology for Their As

Authors: Davy Vanham Stefanie Millinger Harald Pliessnig Wolfgang Rauch

Publish Date: 2011/06/25

Volume: 25, Issue: 13, Pages: 3301-

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Abstract

In this paper a methodology for the calculation of grid cell spatially distributed water demands—for the stakeholders domestic municipal industrial and agricultural without rainfed or irrigated crop production water use—is presented As case study the Kitzbühel region in the Austrian Alps encompassing 20 municipalities was chosen Austria is one of few countries within the European Union that provides data of the population and housing census of 2001 in a raster format with resolutions 125 250 500 1000 and 2500 m From these available data population and employment raster data were used for the analysis Based upon the latter and a calibrated related rate of water use litre per unit per time interval rasterised yearly and winter water demands were calculated These rasters represent the alpine character of the study area and are independent of political borders They can be used in hydraulics related studies a wide range of water resources management studies and for landscape and urban planning studies The limiting factor and scale for all applicable studies is the resolution and availability of accurate population and water use data This fineresolution water demand dataset can only be generated with the high resolution census data and reasonably accurate water use data via survey and expert input Therefore the scale of studies where the proposed methodology is applicable is limited to a local and regional scale up to national borders where the detailed population and housing census of 2001 is available as raster dataThe authors would like to thank all members of the project team of the Waterpool Competence Network http//wwwwaterpoolorg for the funding and support of this work We also thank the different municipalities for the provision of analogue and/or digital maps of their water distribution systems

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