Aquifer: Difference between revisions

Aquifers can occur at various depths.Those closer to the surface are not only more likely to be exploited for water supply and irrigation, but are also more likely to be topped up by the local rainfall. Many desert areas have limestone hills or mountains within them or close to them which can be exploited as groundwater resources. Parts of the [[Atlas Mountains]] in [[North Africa]], the [[Mount Lebanon|Lebanon]] and [[Anti-Lebanon]] ranges of [[Syria]], [[Israel]] and Lebanon, the [[Jebel Akhdar (Oman)]] in [[Oman]], parts of the [[Sierra Nevada (U.S.)|Sierra Nevada]] and neighbouring ranges in the [[Southwestern United States|United States' South West]], have shallow aquifers which are exploited for their water. Over exploitation can lead to the exceeding of the practical sustained yield, i.e. more water is taken out than can be replenished. Along the coastlines of certain countries, such as [[Libya]] and Israel, population growth has led to [[over-population]] which has caused the lowering of water table and the subsequent contamination of the [[groundwater]] with saltwater from the [[sea]] (saline intrusions). Patrick was here