الفهرس | Only 14 pages are availabe for public view |
Abstract Wadi Abbadi is one of the most important basins in Upper Egypt, it extends NE-SW direction along Idfu-Marsa-Alam road. It covers an area of about 6000 km2. It is bounded by longitudes 32o 50’ 00” and 34o 05’ 00” E and latitudes 24o 53’ 00” and 25o 34’ 00” N. This area is one of the promising areas in Egypt for future sustainable development especially land reclamation, industry and touristic expansions. It is located in an arid region so that, the basin could receive a few amount of rainwater during rainy storm events. In the present study remote sensing and GIS techniques were used to evaluate water resources. Remote sensing techniques were used to build up a land cover map. GIS techniques were used for the extraction of drainage network, calculation of the morphometric parameters for the obtained network and assessment of flash flood hazard. Surface water acts as a recharging source for groundwater aquifers through seepage from Nile River and Abbadi canal. Groundwater conditions in the study area were discussed through hydrogeological data of the main groundwater aquifers, namely Quaternary aquifer, Upper–Cretaceous aquifer and fractured erP aquifer. Quaternary alluvial aquifer occupies delta of wadi Abbadi, Upper Cretaceous represent the main ground water resource in the study area and the fractured baPePent Pre-Cambrian aquifer represent the weathered zone of the basement rocks. The main recharge of groundwater is direct precipitation, return flow after irrigation and flash floods coming from the mountainous region. It is noticed that the water level in Abbadi canal is higher than the free water level of Quaternary aquifer, which means that the Quaternary aquifer is recharged from the seepage of Abbadi canal and the infiltrated irrigation and runoff water. Groundwater in the study area belongs to fresh and slightly saline type. Hydrogeochemical modelling |