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A General Equilibrium Analysis Of Conjunctive Ground And Surface Water Use With An Application To Morocco

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Author Info

  • Diao, Xinshen
  • Dinar, Ariel
  • Roe, Terry L.
  • Tsur, Yacov

Abstract

Groundwater resources (GW) account for nearly 30 percent of the world sustainable water supplies. Yet, this resource, which is fraught with externalities, has largely been left unregulated. The economic literature on GW is predominantly of a partial equilibrium type, taking the rest of the economy parametrically. We analyze GW regulation in a general equilibrium setting, focusing on the stabilization value of GW under natural (draught) and economic (rural-urban water transfer) shocks. A general equilibrium approach allows evaluating direct and indirect effects of GW regulation on agriculture and non-agriculture sectors and extends the scope for water policy. The analysis is applied to Morocco by extending an existing computable general equilibrium (CGE) model to include ground and surface water (SW) resources. We study effects of (i) an increase in GW extraction cost (e.g., as a result of prolonged extraction beyond natural recharge that lowers the aquifer's water table), (ii) a transfer of SW from rural (irrigation) to urban (domestic) use, and (iii) a reduction of water availability due to severe drought. We estimate the value of GW and assess the direct (partial equilibrium) and indirect (general equilibrium) impacts. We find that GW has a critical role in mitigating the negative effects of these types of shocks.

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Bibliographic Info

Paper provided by Hebrew University of Jerusalem, Department of Agricultural Economics and Management in its series Discussion Papers with number 7143.

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Date of creation: 2007
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Handle: RePEc:ags:huaedp:7143

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Postal: Faculty of Agriculture, Food and Environmental Quality Sciences Hebrew University of Jerusalem, P.O. Box 12, Rehovot 76100
Phone: 08-9481230
Fax: 08-9466267
Web page: http://departments.agri.huji.ac.il/economics/indexe.html
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Keywords: Resource /Energy Economics and Policy;

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References

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  1. Rosegrant, Mark W. & Cai, Ximing & Cline, Sarah A., 2002. "Water and food to 2025," 2020 vision briefs 13, International Food Policy Research Institute (IFPRI).
  2. Knapp Keith C. & Olson Lars J., 1995. "The Economics of Conjunctive Groundwater Management with Stochastic Surface Supplies," Journal of Environmental Economics and Management, Elsevier, vol. 28(3), pages 340-356, May.
  3. Tsur, Yacov & Graham-Tomasi, Theodore, 1991. "The buffer value of groundwater with stochastic surface water supplies," Journal of Environmental Economics and Management, Elsevier, vol. 21(3), pages 201-224, November.
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Cited by:
  1. Roberto Ponce & Francesco Bosello & Carlo Giupponi, 2012. "Integrating Water Resources into Computable General Equilibrium Models - A Survey," Working Papers 2012.57, Fondazione Eni Enrico Mattei.
  2. Yerushalmi, Erez, 2012. "Measuring the administrative water allocation mechanism and agricultural amenities," The Warwick Economics Research Paper Series (TWERPS) 992, University of Warwick, Department of Economics.
  3. Brent, Daniel A., 2013. "The Value of Heterogeneous Property Rights: The Costs of Water Volatility," 2013 Annual Meeting, August 4-6, 2013, Washington, D.C. 149698, Agricultural and Applied Economics Association.
  4. Dinar, Ariel, 2012. "Economy-wide implications of direct and indirect policy interventions in the water sector: lessons from recent work and future research needs," Policy Research Working Paper Series 6068, The World Bank.

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