Surface Runoff Modeling of Ephemeral Streams Considering Homogenization Theory in Arid Regions, Wadi Assiut in Egypt

It has been stated that the limitation of the development of arid zone hydrology is the lack of high quality observations. This paper introduces a distributed hydrological model of the Wadi system for flood control and water resources management considering the discontinuous occurrence of flow in both space and time. We provide a homogenization method of upscaling hydrologic parameters related to a distributed runoff model from macroscopic aspects up to megascopic ones. Discharge distribution of the Wadi system can be simulated. Transmission losses and their effects on surface and subsurface flow are evaluated. The conjunctive use of surface and subsurface water is recommended. It is concluded that this model is an applicable methodology for distributed discharge in the arid regions.