Prof. Bachir ACHOUR works as a Professor in the hydraulic and civil engineering department, University of Biskra Algeria. He is the manager of the research laboratory in subterranean and surface hydraulics (LARHYSS) and a member of the international association of hydraulic research (IAHR). The research work is focused on all fields of hydraulic engineering, including Environment, surface hydraulics, pipe-flow problems and hydraulic modelling, Engineering Science as well. He has many publications in these fields. He is the initiator of the rough model method which has been the subject of numerous publications.