Author(s)

J.A.Bertens, J.Weichselgartner

Abstract

Assessing hydrological impacts facing lack of data - hydrological minimalism J. Bertens' & J. Weichselgartner^ ^DCITIMAC, University of Cantabria, Spain i^ Geographisches Institut, University of Bonn, Germany Abstract The assessment of hydrological impacts in an Environmental Impact Assessment is generally complicated by the availability of suitable models and data. This paper deals with the application of two models for simulation of the hydrological regime of a small catchment in the Basque Country, Spain, and assessment of expected changes due to the construction of a motorway. Although only a digital elevation model and precipitation data are used as input data, results are satisfactory. Predicted deviations from current discharge regime can be expressed as changes in the recurrence interval of a given discharge peak, which increases comprehensibility and facilitates integration with other indicators in an EIA. 1 Introduction The importance of early consideration

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