Ghomri, A.Riguet, F.Debabeche, M.2020-10-202020-10-202012-07-01Articale in Journal of fundamental and Applied Sciences Vol. 04 N. 021112-9867http://dspace.univ-eloued.dz/handle/123456789/7172Articale in Journal of fundamental and Applied Sciences Vol. 04 N. 02This study aims to study the hydraulic jump controlled by threshold, moving in a channel profile 'U' bottomed rough for a single roughness ε = 9,11mm. Functional relations in dimensionless terms, linking the different characteristics of the projection, showing the effect of roughness of the bottom of the channel are obtained.frHydraulic jump, channal-shaped in U, stilling basin,channel bottom rough.Article