Floods frecuency analysis of the Genii river in Ecija (Sevilla), in relation to the urban ocupation of the inundation plain

The city of Ecija (Sevilla), had been suffered along history several destructives events of floods. Regulation of river basin made in the 60s, was not sufficient to finish completely the overbank problems over the city. This problem was increased because of the fast urban growth, aimed towards the inundation plain occupation. To obtain a quantitative knowledge of problem, were made a floods frecuency analysis of Cenil River in Ecija; and after this were plotted a floods risk map considering the greatest flows calculated for periods of 70, 25 and 7 00 year