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Modeling Water Accessibility of Natural River Networks Using the Fine-Grained Physical Watershed Characteristics at the Grid Scale

Author

Listed:
  • Guangming Yu

    (Hubei Province Key Laboratory for Geographical Process Analysis and Simulation
    Central China Normal University)

  • Xiaoxu Chen

    (Central China Normal University)

  • Zhenfa Tu

    (Hubei Province Key Laboratory for Geographical Process Analysis and Simulation
    Central China Normal University)

  • Qiwu Yu

    (Central China Normal University)

  • Yu’an Liu

    (Hubei Province Key Laboratory for Geographical Process Analysis and Simulation
    Hunan University of Technology)

  • Hailong Yu

    (Central China Normal University)

Abstract

Traditional assessments of water resources use water availability as an evaluating metric. Water availability is a statistical average and cannot reflect the spatial differences of water resources in a region or basin. This assessment usually engenders a paradox, that is, water resources are abundant in a region but it is difficult to obtain water for the people on some spatial points in this region. In this study we define a new term, water accessibility, to eliminate this paradox and develop a model of water accessibility (the SHRD model) to meet the need of spatial details in water resources assessment at the grid scale. In the case study the water accessibility of the Hanjiang River Basin is mapped and assessed by the SHRD model. The comprehensive index of water accessibility is 0 to 4.5 and tends to increase from northwest to southeast in the study area. The results of the SHRD model can show the spatial pattern of water accessibility in a region, and can server a more finely-tuned water resources management approach. This model and method push the macroscopic (regional) water resources assessment forward from the microcosmic (raster cell) analysis.

Suggested Citation

  • Guangming Yu & Xiaoxu Chen & Zhenfa Tu & Qiwu Yu & Yu’an Liu & Hailong Yu, 2017. "Modeling Water Accessibility of Natural River Networks Using the Fine-Grained Physical Watershed Characteristics at the Grid Scale," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 31(7), pages 2271-2284, May.
    • Handle: RePEc:spr:waterr:v:31:y:2017:i:7:d:10.1007_s11269-017-1643-4
    DOI: 10.1007/s11269-017-1643-4
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    References listed on IDEAS

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    1. George Tsakiris & Mike Spiliotis & Harris Vangelis & Panagiotis Tsakiris, 2015. "Εvaluation of Measures for Combating Water Shortage Based on Beneficial and Constraining Criteria," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 29(2), pages 505-520, January.
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    4. Brooksbank, K. & Veneklaas, E.J. & White, D.A. & Carter, J.L., 2011. "Water availability determines hydrological impact of tree belts in dryland cropping systems," Agricultural Water Management, Elsevier, vol. 100(1), pages 76-83.
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    Cited by:

    1. Fawen Li & Huifeng Liu & Xu Chen & Dong Yu, 2019. "Trivariate Copula Based Evaluation Model of Water Accessibility," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 33(9), pages 3211-3225, July.

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