Climate and soil controls on flood frequency

Abstract:- The flood frequency estimation in ungauged basins is an important field that requires the development of innovative statistical tools aimed to improve the available techniques for risk assessment. This research is aimed to better understand and classify the hydrological processes underlying the flood generation exploiting the theoretical model of Iacobellis and Fiorentino [8]. The present paper is oriented to investigate the variables responsible of flood generation, analyzing the effects of climatic and physiographic basin features on the main variables of the theoretical flood probability distributions. Investigations are focused on the scaling relationships between estimates of flood distribution variables and physical features of 33 gauged basins in a wide area of Southern Italy. Results provide interesting information for the research of an analytical derivation of a flood frequency distribution whose parameters are directly correlated to climate and geomorphologic characteristics