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Modelling water resources for planning irrigation development in drought-prone southern Chile

Author

Listed:
  • Ian McNamara
  • Alexandra Nauditt
  • Mauricio Zambrano-Bigiarini
  • Lars Ribbe
  • Hamish Hann

Abstract

To foster poverty reduction in drought-prone Araucanía, the Chilean Irrigation Commission is planning an important expansion of irrigated areas. Scenarios incorporating climate change (2030–2059) were simulated for a pilot basin using the WEAP water allocation model, showing that larger irrigated areas, coupled with higher temperatures and less precipitation, are likely to cause severe seasonal water scarcity. As decision support for the planning of effective measures to increase drought resilience, we modelled the construction of two upstream reservoirs combined with higher irrigation efficiency. We find that unmet water demand can be reduced by up to 97.7% by these measures.

Suggested Citation

  • Ian McNamara & Alexandra Nauditt & Mauricio Zambrano-Bigiarini & Lars Ribbe & Hamish Hann, 2021. "Modelling water resources for planning irrigation development in drought-prone southern Chile," International Journal of Water Resources Development, Taylor & Francis Journals, vol. 37(5), pages 793-818, September.
    • Handle: RePEc:taf:cijwxx:v:37:y:2021:i:5:p:793-818
    DOI: 10.1080/07900627.2020.1768828
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    Cited by:

    1. Manh Hung Do & Trung Thanh Nguyen, 2023. "Does irrigation development mitigate weather extremes’ impacts and reduce poverty? Evidence from rural Southeast Asia," TVSEP Working Papers wp-034, Leibniz Universitaet Hannover, Institute of Development and Agricultural Economics, Project TVSEP.

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