Optimal Watershed Management for Reservoir Sustainability: Economic Appraisal
Publication: Journal of Water Resources Planning and Management
Volume 139, Issue 2
Abstract
Accumulation of sediment from upstream agricultural land may shorten the lifetime of a reservoir and reduce its long-term benefits. This paper presents a framework for assessment of management strategies that simultaneously considers upstream soil conservation and downstream reservoir-level sediment control. A dynamic model that utilizes optimal control theory is developed for this purpose. Simulation results from the model are expected to provide practical information for policy makers, such as determination of the best sediment removal technology, the optimal timing to install this technology, and the optimal pattern of soil conservation efforts. An illustrative application to Lake Aswan, which is located between the Sudan and Egypt, indicates that the highest permissible level of soil conservation and the unconstrained dredging installed at 22 years are the best management practices, giving a sustainable life of the reservoir and net benefits of $117.8 billion. The cooperative strategy compared to the noncooperative and baseline strategies increases social net benefits by $6.5 billion and $7.8 billion, respectively. To test the robustness of this study’s results, sensitive analysis for key parameters, such as interest rate, water price, agricultural sediment contribution, and soil conservation effectiveness was performed. The results are very sensitive to selected parameters. As suspected, interest rate and water price shift the net present value of watershed on both sides. However, the rank of alternatives does not change.
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Acknowledgments
The authors would like to thank Dr. Ayman Abou-zeid for providing valuable data for the Aswan watershed. In addition, constructive comments from two anonymous reviewers and the associate editor greatly helped improve this paper.
References
Abdel-Aziz, T. M. (2009). “Water and sediment management for the Blue Nile basin.” 13th Int. Water Technology Conf., 2009, Hurghada, Egypt.
Abdel-Aziz, T. M., and De Smedt, F. (1992). “Numerical modelling of sediment transport and consolidation in the High Aswan Dam reservoir.” Proc. Int. Conf. on Development of the Nile and Other Major Rivers, 1, 5-9-1/5-9-11, The Nile Research Institute, Delta Barrage, Egypt.
Abu El-Atta, A. A. (1978). Egypt and the Nile after the construction of the High Aswan Dam, Ministry of Irrigation, Cairo, Egypt.
Ahmed, A. A., and Ismail, U. (2008). “Sediment in the Nile River system.” Consultancy study, UNESCO.
Aly, I., Zein, R., and Abou-Sassd, H. (2005). “Irrigation water pricing: Is it an efficient instrument for water consumption rationalization?” Minufiy J. Agric. Res., 30(1), 817–833.
Asfaw, Z., and Tadesse, M. (2001). “Prospects for sustainable use and development of wild food plants in Ethiopia.” Econ. Bot., 55(1), 47–62.
Bates, B. C., Kundzewicz, Z. W., Wu, S., and Palutikof, J. P. E., eds. (2008). “Climate Change and Water.” Technical Paper of the Intergovernmental Panel on Climate Change, IPCC Secretariat, Geneva, 210.
Betrie, G. D., Mohamed, Y. A., Van Griensven, A., and Srinivasan, R. (2011). “Sediment management modelling in the Blue Nile Basin using SWAT model.” Hydrol. Earth Syst. Sci., 15, 807–818.
Bishaw, B. (2001). “Deforestation and land degradation in the Ethiopian highlands: A strategy for physical recovery.” NE Afr. Stud., 8, 7–25.
Biswas, A. K. (1992). “Aswan dam revisited.” Eco decision, 67–69.
Briones, N. D. (1991). “Estimating erosion costs: A Philippine case study in the lower Agno River watershed.” Watershed resources management: Studies from Asia and the Pacific, The East-West Center, Honolulu, 191–204.
Chiang, A. C. (1992). Elements of dynamic optimization, McGraw-Hill, New York.
Food and Agriculture Organization of the United Nations (FAO). (2007). The state of food and agriculture, FAO, Rome.
Gebremichael, D., et al. (2005). “Effectiveness of stone bunds in controlling soil erosion on cropland in the Tigray highlands, Northern Ethiopia.” Soil Use Manage., 21(3), 287–297.
Goor, Q., Kelman, R., and Tilmant, A. (2011). “Optimal multipurpose-multireservoir operation model with variable productivity of hydropower plants.” J. Water Resour. Plann. Manage., 137(3), 258–267.
Hawando, T. (1997). “Desertification in Ethiopian highlands.” Rala Rep.
Hawker, P. (2000). World commission on dams: A review of the role of dams and flood management, Halcrow Water, Burderop Park, Swindon.
Herweg, K., and Ludi, E. (1999). “The performance of selected soil and water conservation measures—case studies from Ethiopia and Eritrea.” Catena, 36(1–2), 99–114.
Hotchkiss, R. H., and Huang, X. (1995). “Hydrosuction sediment-removal systems (HSRS): Principles and field test.” J. Hydraul. Eng., 121(6), 479–489.
Hurni, H. (1987). Soil conservation in Ethiopia: Community forests and soil conservation development, Mimeo, Ministry of Agriculture and Livestock Development, Addis Ababa, Ethiopia.
Hurni, H. (1988). “Degradation and conservation of the resources in the Ethiopian highlands.” Mountain research and development, 123–130.
International Lake Environmental Committee (ILEC). (2008). “Aswan High Dam reservoir database.” World Lakes Database, 〈http://www.ilec.or.jp/database/afr/afr-19.html〉 (May 5, 2008).
Jobin, W. R. (1999). Dams and Disease: Ecological Design and Health Impacts of Large Dams, Canals, and Irrigation Systems, Taylor & Francis Group, London.
Kawashima, S., Johndrow, T., Annandale, G., and Shah, F. (2003). Reservoir conservation: Volume II-RESCON model and user manual, World Bank, Washington, DC.
Lal, R. (1981). “Soil erosion problems on alfisols in western Nigeria, VI. Effects of erosion on experimental plots.” Geoderma, 25(3–4), 215–230.
Lasheen, M. R. (1987). “The distribution of trace metals in Aswan High Dam reservoir and River Nile ecosystem.” Lead, mercury, cadmium and arsenic in the environment, T. C. Hutchinson and K. M. Meema, eds., Wiley, New York, 235–254.
Malik, S. (2004). “The Three Gorges Dam: A comprehensive case study.” Ph.D. dissertation, Univ. of Texas at Austin, Austin, TX.
McCartney, M., Sullivan, C., and Acreman, M. (2000). Ecosystem impacts of large dams, United Nation Foundation, Washington, DC.
McConnell, K. (1983). “An economic model of soil conservation.” Amer. J. Agric. Econ., 65(1), 83–89.
Morris, G. L., and Fan, J. (1998). Reservoir sedimentation handbook: Design and management of dams, reservoirs, and watersheds for sustainable use, McGraw-Hill Professional, New York.
Palmieri, A., Shah, F., Annandale, G., and Dinar, A. (2003). Reservoir conservation: The RESCON approach: Volume I, World Bank, Washington, DC.
Pattanapanchai, M. (2005). “Economics of renewable resource management: An application to multipurpose dams.” Ph.D. dissertation, Univ. of Connecticut, Storrs, CT.
Pattanapanchai, M., Shah, F., and Annandale, G. (2002). “Sediment management in flood control dams.” American Agricultural Economics Association Annual Meeting 2002, AAEA, Long Beach, CA.
Pimentel, D., et al. (1995). “Environmental and economic costs of soil erosion and conservation benefits.” Science, 267, 1117–1123.
Shahin, M. (1993). An overview of reservoir sedimentation in some African river basins, LAHS Publication No. 217, Yokohama, Japan, 93–100.
Shalash, S. (1982). “Effects of sedimentation on the storage capacity of the Aswan High Dam.” Hydrobiologia, 92, 623–639.
Smith, S. E. (1990). “A revised estimate of the life span for Lake Nasser.” Environ. Geol., 15, 123–129.
Southgate, D., and Macke, R. (1989). “The downstream benefits of soil conservation in third world hydroelectric watersheds.” Land Econ., 65(1), 38–48.
World Commission on Dams (WCD). (2000). Dams and development: A new framework for decision-making, Earthscan, London and Sterling.
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Information
Published In
Journal of Water Resources Planning and Management
Volume 139 • Issue 2 • March 2013
Pages: 129 - 138
Copyright
© 2013 American Society of Civil Engineers.
History
Received: Feb 16, 2010
Accepted: Jan 30, 2012
Published online: Feb 1, 2012
Published in print: Mar 1, 2013
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