GIS SPATIAL MODEL BASED FOR DAM RESERVOIR ON DRY WADIS

摘要

In this study, remote sensing was combined with GIS environment for modeling and control of water rain resources. Reconnaissance and semi detailed field surveys were carried out for collecting information required to produce various thematic maps; such as land use, Digital Elevation Model (DEM) and drainage system, A geographical database was stored as attributes for the investigated area. GIS and Multi-criteria Analysis were applied to determine the best site for building up dams in Wadi Al-kheir area in west north of Egypt to get the benefit for agricultural development, which suffering of dry season in summer and flashfloods in winter that impact the agricultural system as well as natural disasters in terms of human hardships and economic losses. The results illustrated that 26 dam have been selected which located in down steam basin with gentle slope that, have been divided to two class; main dams for reservoir water and secondary dams; which it will increase the potentiality of agricultural development in the study area.