Peligrosidad y riesgo de inundaciones en Pajares de Pedraza (Arahuetes, Segovia) y su incorporación al planeamiento urbanístico

Abstract

The village of Pajares de Pedraza is placed in Central Spain, occupying the floodplain of the Cega river, that provokes interferences between the flood events and human activities for centuries in this small locality (only 20 registered inhabitants). For almost a decade, studies of flood frequency and flood magnitude analysis have been developed in Pajares de Pedraza, combining and integrating hydrologic-‐hydraulic, historic- documentary, botanic-‐dendrogeomorphological and geomorphological methodologies. Nevertheless, it was not until the publication of the Royal Decree-‐Law 638/2016 that this information has been applied to the land management, unlocking the municipal planning regulations, paralyzed in administrative processes since 2013 because of negative reports issued by the Water Authority. As a conclusion, just carrying out hazard and detailed risk analysis that incorporate all the different sources of information and methodologies (including, of course, geomorphological ones), it is possible to achieve a precise knowledge of the territory so as to adapt classes and categories of land-‐use to the natural hazard.