L’Envasement dans Les Barrages de l’Algérie. Silting in the Dams of Algeria.

Abstract

Algeria presently has 57 big dams with a total capacity of 6.8billionof m 3 . Still, this potential quantity of water is lowered by the silting-up of reservoirs, evaporation from the lakes and water losses through bank and dam foundations. According to the last measurements in 2006, the silting-upof the 57 Algerian big dams is 45 Milion.m /year, with strong disparities from one site to another and a significant increase in erosion in some catchments during the last decades. This situation represents a decrease in capacity of 0.65% per year. 3