Flash floods are a continual hazard in Asir, and they can do significant damage to the region. The ASTER DEM, GIS, and geomorphic field data used in this study to predict flash floods for streams and basins are discussed. It was possible to undertake a quantitative evaluation of 37 watersheds on the Asir escarpment by using recovered and calculated morphometric characteristics and mathematical equations in this study. The techniques discussed above, Shamy's strategy for decisive the morphometric hazard degree, and morphometric investigation of the drainage basin and curve number were employed in the study (CN). Sub-basins at high and severe risk of flooding were identified and illustrated using geographic information systems (GIS). The research discusses management issues that may solve by using rainfall and runoff in the most efficient manner possible. Various management options for the basin's water resources are forecasted in this research using modeling geographic information systems (GIS). A map (A) shows the expected areas of runoff risk and water harvesting and (B) the planned dams' peak discharge (Qp) for each basin under consideration