Spillways usually used for escaping water from the U.S. having a high-water level, to D.S. having a low water level in most of the diversion head structures through water streams. The D.S. of such spillways usually suffers from the destructive impacts of the generated kinetic energy of the flowing water, having a very high speed, which may cause cavitation in such spillways body. In the present work, some geometrical treatments on the back of the spillway body, are introduced for increasing its efficiency in dissipating the kinetic energy of the flowing water, having great potential energy, and improving the flowing water quality by increasing its dissolved oxygen content, through generating huge aeration at the flow in the back, in addition to prevent cavitation which may occur, and generated on the back of the spillway body. Previous studies proved that the stepped back of the spillway body is one of the most practicable trails done for achieving the above-mentioned goals. In this paper, a review of previous authors` technical methods to obtain the best design of the spillway geometric that dissipates high values of the kinetic energy and improving the flow aeration.is highlighted.