An optimal irrigation water allocation model

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dc.contributor.authorSamei' Tabieh, Mohammad Abedel
dc.date.accessioned2014-11-18T07:48:04Z
dc.date.available2014-11-18T07:48:04Z
dc.date.issued2007
dc.descriptionPhDen_US
dc.description.abstractWater shortage is a serious problem in most countries in the Middle East. In Jordan, Irrigation water consumes about 70 percent of the available fresh water resources. The main objective of this study is to develop a management model for optimal use of irrigation water in the Jordan Valley. The study presents a practical approach for the purpose by building a linear programming optimization model for analyzing allocation of irrigation water in quantities, qualities, timing, prices and pricing policies; and their impact on agricultural production and income. The optimal water demand curves as well as the derived demand curves for planted area, agricultural labor and fertilizers according to the different water prices can be derived from this model. Consequently, demand elasticities can also be estimated for water and for the other constraints. Optimal cropping pattern in the Jordan Valley and its districts are also generated from the model. The optimal water demand schedule is obtained by the model and distributed according to the months and the needs of the planted areas. The results shows the effectiveness of the use of pricing mechanism as a policy tool in dealing with water in irrigated agriculture under the current water management institution in the Jordan valley. The optimal demand curves allow to quantitatively estimate the demand for water at various prices and on the optimal mix of activities for every water price. Optimal demand curves can also be obtained by the model for both districts and for entire region. They appear to be agreement with estimates of elasticity of water demand as well as reflect actual water usage at suggested prices reasonably closely. The results show that the optimal planted area in the Jordan Valley is about 211 thousand dunum which is about 69 percent of the total available area in the Jordan Valley. The limited quantity of irrigation water covers only 82 percent of the total area in the Jordan Valley. The optimal cropping pattern would generate 37.97 Million Jordanian Dinar (JD) at the prevailing water price of 0.025 JD/CM. A reduction in the total net income occurs when the prices of water increased. The price elasticity of water demand is – 0.04 in the Jordan Valley at the prevailing water price of 0.025 JD/CM. The current schedule of irrigation water shows that some months have an excess of water while others have a shortage. The water price of 0.70 JD/CM represents the break-even price for vegetables while most of the crops experience losses. At the prevailing water price of 0.025 JD/CM, the profitability of one dunum is 180.1 JD, and of one cubic meter is 0.177 JD. It has been recommended that the current price of water be increased from 0.025 JD/CM to 0.05 JD/CM, in order to reduce irrigation water consumption without affecting the planted area or the agricultural labor or the agricultural fertilizers and to keep gross margin stable.en_US
dc.identifier.urihttp://hdl.handle.net/123456789/583
dc.language.isoenen_US
dc.subjectEconomicen_US
dc.subjectoptimal irrigationen_US
dc.subjectwater allocation modelen_US
dc.subjectmanagementen_US
dc.subjectpricing policyen_US
dc.titleAn optimal irrigation water allocation modelen_US
dc.title.alternativeManagement and pricing policy implications for the Jordan valleyen_US
dc.typeThesisen_US
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