QUALITY CONTROL OF SURFACE WATER QUALITY: A CASE STUDY OF THE LAKE ALEG IN MAURITANIA Journal title: International Journal of Civil Engineering and Technology Authors: YAHYA MAHAM OULD SIDI , MOHAMED FEKHAOUI, M.M.O.ABIDINE, ABDLEKBIR BELLAOUCHOU, M.S. KANKOU AND BRAH... Subject(s): Engineering, Civil Engineering