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Evaluation of historic, current and future water demand in the Olifants River Catchment, South Africa

Author

Listed:
  • McCartney, Matthew P.
  • Arranz, Roberto

Abstract

Water resource development has played a significant role in the expansion of agriculture and industry in the Olifants River Catchment. However, currently water deficit is one of the major constraints hampering development in the catchment; both the mining and agricultural sectors are producing below optimal levels because of their reliance on insufficient supplies. In this study, the Water Evaluation and Planning (WEAP) model was used to evaluate scenarios of historic, current and future water demand in the catchment. For each scenario, the WEAP model was used to simulate demand in five different sectors (rural, urban, mining, commercial forestry and irrigation) over a 70-year period of varying rainfall and hydrology. Levels of assured supply were estimated for each sector and the economic cost of failing to provide water was predicted. For the future scenarios, the impact of infrastructure development and water conservation measures were assessed. The study illustrates how a relatively simple model can provide useful insight for resource planning and management.

Suggested Citation

  • McCartney, Matthew P. & Arranz, Roberto, 2007. "Evaluation of historic, current and future water demand in the Olifants River Catchment, South Africa," IWMI Research Reports 61095, International Water Management Institute.
    • Handle: RePEc:ags:iwmirr:61095
    DOI: 10.22004/ag.econ.61095
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    File URL: https://ageconsearch.umn.edu/record/61095/files/RR118.pdf
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    Citations

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    Cited by:

    1. McCartney, Matthew P. & Alemayehu, Tadesse & Shiferaw, Abeyu & Awulachew, Seleshi Bekele, 2010. "Evaluation of current and future water resources development in the Lake Tana Basin, Ethiopia," IWMI Research Reports 94776, International Water Management Institute.
    2. Britta Höllermann & Simone Giertz & Bernd Diekkrüger, 2010. "Benin 2025—Balancing Future Water Availability and Demand Using the WEAP ‘Water Evaluation and Planning’ System," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 24(13), pages 3591-3613, October.
    3. George, Biju & Malano, Hector & Davidson, Brian & Hellegers, Petra & Bharati, Luna & Massuel, Sylvain, 2011. "An integrated hydro-economic modelling framework to evaluate water allocation strategies I: Model development," Agricultural Water Management, Elsevier, vol. 98(5), pages 733-746, March.
    4. George, Biju & Malano, Hector & Davidson, Brian & Hellegers, Petra & Bharati, Luna & Massuel, Sylvain, 2011. "An integrated hydro-economic modelling framework to evaluate water allocation strategies II: Scenario assessment," Agricultural Water Management, Elsevier, vol. 98(5), pages 747-758, March.
    5. McCartney, Matthew & Smakhtin, Vladimir, 2010. "Water storage in an era of climate change: addressing the challenge of increasing rainfall variability. Blue paper," IWMI Reports 212430, International Water Management Institute.

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