The weather over the next may 1st ten days will cause significant variations in water flow and availability, which are going to have the following effects on different water-related systems: More water flow is expected to enhance the water supply in various parts of the country, especially belg rainfall benefiting Areas such as most Genale Dawa, middle and lower Omo Gibe, Rift valley, upper and middle wabi shebele which will help water store in reservoirs have positive impact, and the other hand negative effects also will have in different River basins such as Afar Danakil, Ogaden, Aysha and Merebgash: therefore recommend collect rain water in different mechanism for water sustainability.