Regionalization ot the EIbe river basin pursuant to flood seasonal analysis

Abstract

This paper presents analysis of flood seasonality regional distribution in the Elbe river catchment. Three methods of hood occurrence seasonality analysis are applied - polar graph method, directional statistics method and the method of cumulative frequencies. On the basis of seasons determined for each gauging station, the Elbe river basin was divided into seven hydrologically homogenous regions. The regions do not copy natural river basin borders, but rather correspond to areas with similar characteristics as average annual precipitation or altitude