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Accueil du site → Doctorat → États-Unis → 1996 → OPTIMAL TEMPORAL ALLOCATION OF THE MULTI- AQUIFER SYSTEM IN AL-HASSA OASIS, EASTERN SAUDI ARABIA

Oklahoma State University (1996)

OPTIMAL TEMPORAL ALLOCATION OF THE MULTI- AQUIFER SYSTEM IN AL-HASSA OASIS, EASTERN SAUDI ARABIA

ABDULKADER, AHMED MOHAMMED

Titre : OPTIMAL TEMPORAL ALLOCATION OF THE MULTI- AQUIFER SYSTEM IN AL-HASSA OASIS, EASTERN SAUDI ARABIA.

Auteur : ABDULKADER, AHMED MOHAMMED

Université de soutenance : OKLAHOMA STATE UNIVERSITY

Grade : Doctor of Philosophy 1996

Résumé
Scope and method of study. Currently, Saudi Arabia faces a severe water shortage problem which has been attributed mainly to the imbalanced use of national groundwater resources especially by the agricultural sector. A linear-dynamic programming model was developed to determine the optimal temporal allocation of water from the multi-aquifer system in Al-Hassa area with surface, sprinkler, and trickle irrigation systems. The model developed by this study was a preliminary model that could be easily revised. The main objectives of this study were to : (i) determine the optimal investment and resource utilization that maximizes the net social benefits (NSB) ; (ii) determine the consequence of future development on the reserves of the multi-aquifer system in Al-Hassa area ; and (iii) determine the optimal temporal investment in irrigation wells, irrigated land, annual water use, and distribution systems that yields the greatest discounted NSB. Findings and conclusions. The results of the preliminary linear-dynamic model indicated a promising future for irrigation in Al-Hassa area. The surface irrigation system was found to provide the highest discounted NSB. However, trickle irrigation was superior to the other irrigation system in terms of the efficient use of irrigation water. Results also showed that the water table in the multi-aquifer system would drop by more than 100 meters if the high rates of withdrawal were maintained over the next 100 years. However, the maximum NSB was obtained with a more moderate rate of water use which lowered the water table by only 42 meters.

Mots-clés : ECONOMICS, AGRICULTURAL , ENGINEERING, AGRICULTURAL , HYDROLOGY, URBAN AND REGIONAL PLANNING

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