Non-renewable groundwater resources: a ... - unesdoc - Unesco

CHAPTER 5 ■ REGIONAL CASESConclusionsIn light of the results of this assessment of the exploitable reserves, planners could choosethe period of production in accordance with national water policies. Relationships betweenannual extraction and duration of production has been worked out for each country and forthe total exploitable volume. Mining of this non-renewable resource will eventually lead to risein extraction costs as water levels fall and if and as water quality deteriorates. It is vital that theextracted groundwater is used with the maximum possible hydraulic efficiency and economicproductivity.ReferencesCEDARE. 2002. Regional Strategy for the Utilization of The Nubian Sandstone Aquifer SystemVolume II. CEDARE, Heliopolis Bahry, Cairo, Egypt.THORWEIHE U. 1986. Nubian Aquifer System, In: Said, R. (ed.): The geology of Egypt. Second Edition,Elservier, Amsterdam.81