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Study on the Trade-Off between Ecological Base Flow and Optimized Water Supply

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  • Nien-Sheng Hsu
  • Chung-Hsiang Chiang
  • Wen-Ming Cheng
  • Chih-Chiang Wei

Abstract

The purpose of this study is proposing a methodology to determine the ecological base flow of a river. In the past in Taiwan, the ecological base flow was calculated according to the basin area, and the influence of the water supply was not considered. This study proposes a methodology combining the water distribution optimization model with the Riverine Habitat Simulation System model to demonstrate the impact on the aquatic habitat for indicator species with different ecological base flow settings. The most suitable value of the ecological base flow between the indicators of the Shortage Index and the average value of Percentage Usable Area is determined using trade-off analysis and the incremental method. The result shows for the indicator species in the study area, Tou-Qian River Basin in Northern Taiwan, the most appropriate ecological base flow is 3.75 m 3 /s and it’s the optimal use of the ecological base flow between the water supply and the ecology. Copyright Springer Science+Business Media B.V. 2012

Suggested Citation

  • Nien-Sheng Hsu & Chung-Hsiang Chiang & Wen-Ming Cheng & Chih-Chiang Wei, 2012. "Study on the Trade-Off between Ecological Base Flow and Optimized Water Supply," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 26(11), pages 3095-3112, September.
    • Handle: RePEc:spr:waterr:v:26:y:2012:i:11:p:3095-3112
    DOI: 10.1007/s11269-012-0050-0
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    References listed on IDEAS

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    1. K. Meijer & W. Krogt & E. Beek, 2012. "A New Approach to Incorporating Environmental Flow Requirements in Water Allocation Modeling," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 26(5), pages 1271-1286, March.
    2. Smakhtin, Vladimir & Anputhas, Markandu, 2006. "An assessment of environmental flow requirements of Indian river basins," IWMI Research Reports H039610, International Water Management Institute.
    3. Jian-Ping Suen, 2011. "Determining the Ecological Flow Regime for Existing Reservoir Operation," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 25(3), pages 817-835, February.
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    Cited by:

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    3. Li, Weiming & Chen, Qiuwen & Cai, Desuo & Li, Ruonan, 2015. "Determination of an appropriate ecological hydrograph for a rare fish species using an improved fish habitat suitability model introducing landscape ecology index," Ecological Modelling, Elsevier, vol. 311(C), pages 31-38.
    4. Chunlong Li & Jianzhong Zhou & Shuo Ouyang & Chao Wang & Yi Liu, 2015. "Water Resources Optimal Allocation Based on Large-scale Reservoirs in the Upper Reaches of Yangtze River," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 29(7), pages 2171-2187, May.

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