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Optimizing competitive uses of water for irrigation and fisheries

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  • Tran, Lap Doc
  • Schilizzi, Steven
  • Chalak, Morteza
  • Kingwell, Ross
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    Abstract

    Choosing the appropriate reservoir water management strategy can be difficult when the water has multiple uses. This study examines this problem for reservoir managers where water use involves irrigation and fisheries. A stochastic dynamic programming (SDP) model is developed to facilitate reservoir management, using a case study illustration for southern Vietnam. The model includes the response of rice and fish yields to key factors including reservoir water levels, the timing and quantity of water release, and climatic conditions. The model also accounts for variation in rainfall patterns, irrigation requirements, and the demand for low water levels during the fish harvest season. Three production scenarios are examined where the reservoir's water is used for: only producing rice (scenario 1), only producing fish (scenario 2), and producing rice and fish (scenario 3). Key findings are: (1) for scenario 1, adequate water should be released to meet rice growing water requirements and residual water should be stored as a source of water in case of low rainfall, (2) for scenario 2, sufficient water needs to be released prior to the fish harvest to maximize this harvest; and (3) for scenario 3, water should be released prior to fish harvest, but sufficient water should remain to satisfy the water requirements of rice. When the reservoir is managed for joint production of rice and fish, net benefits are 6% greater than when the reservoir is managed solely for rice production. The SDP model developed in this paper could be adapted and applied to other multiple-use resources such as forests, river basins, and land.

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    Bibliographic Info

    Article provided by Elsevier in its journal Agricultural Water Management.

    Volume (Year): 101 (2011)
    Issue (Month): 1 ()
    Pages: 42-51

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    Handle: RePEc:eee:agiwat:v:101:y:2011:i:1:p:42-51

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    Web page: http://www.elsevier.com/locate/agwat

    Related research

    Keywords: Reservoir water management; Irrigation; Fisheries; Optimization; Multiple-use resources; Stochastic dynamic programming;

    References

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    Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
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    1. Shangguan, Zhouping & Shao, Mingan & Horton, Robert & Lei, Tingwu & Qin, Lin & Ma, Jianqing, 2002. "A model for regional optimal allocation of irrigation water resources under deficit irrigation and its applications," Agricultural Water Management, Elsevier, vol. 52(2), pages 139-154, January.
    2. N. Umamahesh & P. Sreenivasulu, 1997. "Technical Communication: Two-Phase Stochastic Dynamic Programming Model for Optimal Operation of Irrigation Reservoir," Water Resources Management, Springer, vol. 11(5), pages 395-406, October.
    3. Reca, Juan & Roldan, Jose & Alcaide, Miguel & Lopez, Rafael & Camacho, Emilio, 2001. "Optimisation model for water allocation in deficit irrigation systems: I. Description of the model," Agricultural Water Management, Elsevier, vol. 48(2), pages 103-116, June.
    4. Rao, N. H. & Sarma, P. B. S. & Chander, Subhash, 1988. "A simple dated water-production function for use in irrigated agriculture," Agricultural Water Management, Elsevier, vol. 13(1), pages 25-32, April.
    5. Reca, Juan & Roldan, Jose & Alcaide, Miguel & Lopez, Rafael & Camacho, Emilio, 2001. "Optimisation model for water allocation in deficit irrigation systems: II. Application to the Bembezar irrigation system," Agricultural Water Management, Elsevier, vol. 48(2), pages 117-132, June.
    6. Tran, Lap Doc & Schilizzi, Steven & Kingwell, Ross S., 2010. "Dynamic trade-offs in water use between irrigation and reservoir aquaculture in Vietnam," 2010 Conference (54th), February 10-12, 2010, Adelaide, Australia 59171, Australian Agricultural and Resource Economics Society.
    7. Bouman, B. A. M. & Tuong, T. P., 2001. "Field water management to save water and increase its productivity in irrigated lowland rice," Agricultural Water Management, Elsevier, vol. 49(1), pages 11-30, July.
    8. Abdallah Ben Alaya & Abderrazek Souissi & Jamila Tarhouni & Kamel Ncib, 2003. "Optimization of Nebhana Reservoir Water Allocation by Stochastic Dynamic Programming," Water Resources Management, Springer, vol. 17(4), pages 259-272, August.
    9. Tran, Lap Doc & Schilizzi, Steven & Chalak, Morteza & Kingwell, Ross S., 2011. "Managing multiple-use resources: optimizing reservoir water use for irrigation and fisheries," 2011 Conference (55th), February 8-11, 2011, Melbourne, Australia 100721, Australian Agricultural and Resource Economics Society.
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