Water resources in Saudi Arabia with particular reference to Tihama Asir province

TL;DRAbstract

Although Saudi Arabia has made great progress in almost all aspects of development, the availability of water has remained problematic. It is, therefore, important to study water resources, and also the increasing water demands in Saudi Arabia in general, and in Tihama Asir in particular. Climate is influenced to a limited extent by the relatively high altitude of the mountains, especially where rainfall is concerned, and an annual average between 30mm and 300mm is recorded. The rate of evaporation, however, is very high, because of the cloudless sky and high temperatures. Runoff occurs only after torrential and monsoon rain, when the wadis collect floodwaters from their many tributaries. Two hundred dams have been built in recent years in an attempt to increase underground water recharge, and to provide potable water in sufficient quantity and quality, and to provide for irrigation. The ground water resources, including the shallow aquifers of wadis and the deep aquifers, could be of

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