Groundwater Rise Problem and Risk Evaluation in Major Cities of Arid Lands – Jedddah Case in Kingdom of Saudi Arabia

摘要: Arid lands are in the need of additional water supply but transportation from outside natural hydrological cycle causes groundwater to rise within urban areas. Additional surrounding areas or through desalination plants provides comfort domestic activities after usage, its disposition is necessary an efficient manner. Unfortunately, arid region cities have neither sufficient nor sewage system. Consequently, returned surface cesspools and leakages insufficient system makes internal recharge area. Additionally, further raise level. Deterioration quality becomes a potential danger for infrastructure foundations. Surface depressions city may be flooded due level at times bed smells occur various parts city. In this paper, quantitative method followed assess risks addition few chemical associated with sulfate chloride solids. It observed that each one these variables has different probability distribution function expose risk maps features.