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Using system dynamics to model water-reallocation

Author

Listed:
  • Amgad Elmahdi

    (CSIRO, land and water)

  • Hector Malano

    (The University of Melbourne)

  • Teri Etchells

    (The University of Melbourne)

Abstract

Improving the efficiency of water allocation has long been recognised as a key problem for the water resources management decision-makers. However, assessing the efficacy of management decision is difficult due to the complexity and interconnectivity of water resource systems. For this reason, it is vital that robust modelling approaches are employed to deal with the feedback loops inherent in the water resource systems. Whilst many studies have applied modelling to various aspects of water resource management, little attention has been given to innovations in modelling approaches to deal with the modelling challenges associated with improving decision-making. The aim of this study is to apply a System Dynamics modelling approach to improve the efficiency of water allocation incorporating a myriad of irrigation system constraints. The system dynamic approach allows the different system components to be organised as a collection of discrete objects that incorporate data, structure and function to generate complex system behaviour. Through the application of a system dynamic approach, a robust model (named the Economical Reallocating Water Model (ERWM)) was developed which was used to examine the options of re-allocating water resources that minimize the water cost all over an irrigated agricultural area. The EWRM incorporated a wide range of complexities likely to be encountered in water resource management: surface and ground water sources, water trading between sources, system constraint such as maximum ground water pumping, rates, maximum possible trading volumes and differential water resource prices. Two hypothetical systems have been presented here as an example. The results show that the System Dynamics approach has a significant advantages in estimating and assessing the outcomes of alternative water management strategies through time and space.

Suggested Citation

  • Amgad Elmahdi & Hector Malano & Teri Etchells, 2007. "Using system dynamics to model water-reallocation," Environment Systems and Decisions, Springer, vol. 27(1), pages 3-12, March.
    • Handle: RePEc:spr:envsyd:v:27:y:2007:i:1:d:10.1007_s10669-007-9010-2
    DOI: 10.1007/s10669-007-9010-2
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    References listed on IDEAS

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    1. Slobodan Simonovic & Hussam Fahmy & Amin El-Shorbagy, 1997. "The Use of Object-Oriented Modeling for Water Resources Planning in Egypt," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 11(4), pages 243-261, August.
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    Cited by:

    1. Ines Winz & Gary Brierley & Sam Trowsdale, 2009. "The Use of System Dynamics Simulation in Water Resources Management," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 23(7), pages 1301-1323, May.
    2. Xiao-jun Wang & Jian-yun Zhang & Mahtab Ali & Shamsuddin Shahid & Rui-min He & Xing-hui Xia & Zhuo Jiang, 2016. "Impact of climate change on regional irrigation water demand in Baojixia irrigation district of China," Mitigation and Adaptation Strategies for Global Change, Springer, vol. 21(2), pages 233-247, February.
    3. Mabel Tidball & Jean-Philippe Terreaux, 2008. "Information revelation through irrigation water pricing using volume reservations," Working Papers 08-14, LAMETA, Universtiy of Montpellier, revised Sep 2008.
    4. Xiao-jun Wang & Jian-yun Zhang & Jiu-fu Liu & Guo-qing Wang & Rui-min He & Amgad Elmahdi & Sondoss Elsawah, 2011. "Water resources planning and management based on system dynamics: a case study of Yulin city," Environment, Development and Sustainability: A Multidisciplinary Approach to the Theory and Practice of Sustainable Development, Springer, vol. 13(2), pages 331-351, April.
    5. Xiao-jun Wang & Jian-yun Zhang & Shamsuddin Shahid & Amgad ElMahdi & Rui-min He & Xin-gong Wang & Mahtab Ali, 2012. "Gini coefficient to assess equity in domestic water supply in the Yellow River," Mitigation and Adaptation Strategies for Global Change, Springer, vol. 17(1), pages 65-75, January.
    6. Varela-Ortega, Consuelo, 2011. "Participatory Modeling for Sustainable Development in Water and Agrarian Systems: Potential and Limits of Stakeholder Involvement," 2011 International Congress, August 30-September 2, 2011, Zurich, Switzerland 115546, European Association of Agricultural Economists.
    7. Wang Xiao-jun & Zhang Jian-yun & Wang Jian-hua & He Rui-min & Amgad ElMahdi & Liu Jin-hua & Wang Xin-gong & David King & Shamsuddin Shahid, 2014. "Climate change and water resources management in Tuwei river basin of Northwest China," Mitigation and Adaptation Strategies for Global Change, Springer, vol. 19(1), pages 107-120, January.

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