Fig. 11From: Hydrological problems of flash floods and the encroachment of wastewater affecting the urban areas in Greater Cairo, Egypt, using remote sensing and GIS techniquesField photographs showing a wastewater pond in Wadi Degla area from the seepage of land uses upstream and the impact of seepage on waterlogging and salt weathering in the outcrops in the study area (a, b, respectively)Back to article page