CAPACITY LOSS IN DAMS LOCATED IN ARID AND SEMI ARID ZONES. CASE OF GARGAR, BOUHANIFIA, OUIZERT AND FOUM EL GHERZA DAMS

Abstract

Most dams are subject to a loss of capacity due primarily to three factors namely: water leakage, the silting and evaporation intense. The study of these phenomenons is of great importance because they can endanger the stability of the dam and reduce its useful capacity. This is the case in particular dams Gargar, Ouizert, Bouhanifia and Foum El Gherza.

Located in arid areas where water resources are becoming more and more rare. To this end, we saw useful to present this study in the balance sheet total loss of water from these dams. We estimated the average volume losses for the interannual dam Gargar 119, 014 hm³ for dam Bouhanifia 45.45 hm³, to Dam Ouizert 20.28 hm³ and finally to the dam of Foum El Gherza 39 hm³.