Determinación de la erosión en la Cuenca del Segura a partir de los sedimentos acumulados en sus embalses

Abstract

Bathymmetrícal surveys and sedimentological studies have been carried out in 12 reservoirs located in the Segura Basin (Southeast part of Spain). These, reservoirs posses 81% of the total storage capacity of the Segura Basin and their catchments cover 36% of the total surface area of this basin. Therefore the results are highly representative for the area. These results indicate that every year more than 2 millions tons of sediment are deposited in these reservoirs occupying a volume higher than 1.64 hm3. In this way, the Segura Basin have lost, at least, 1 0.68% of its initiále storage capacity. The capacity loss in the reservoirs is a consecuence of the soil losses taking place in the Segura Basin that range from 785 to 697 t/km2.year