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Study of feasibility of night-closure of irrigation canals for water saving

Author

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  • Ghumman, A.R.
  • Khan, Z.
  • Turral, H.

Abstract

The feasibility of closing distributary canals at night was investigated in a recently modernized surface irrigation system in Pakistan, the Upper Swat-Pehur High Level Canal system. Increased water supply, greater delivery capacity and the introduction of downstream control potentially allow more flexible service. In the command area of Maira branch of this system, farmers are anyway abandoning night-time irrigation, as they can meet their needs from improved supply during the day. They practice night irrigation only during the times of peak crop water demand. The rotational delivery system, known as warabandi in the sub-continent and Dauran in Arabian countries, has even broken down in the day in some parts of the command area. This is believed to be typical of systems with more than adequate water supply. A simulation study was undertaken using the CanalMan software developed by Biological & Irrigation Department, Utah State University, Utah Logan, USA. Primary data collected in one distributary canal and the two minors connected to it was utilized for simulations. The feasibility of night-time closure depends on the speed of filling and emptying the canal each day, and the time required to meet full irrigation demand during the day. The results show that where canal lengths are less than 5 km, in this system, there is good potential to make savings, which can be realized at system level through reduced demand on supplemental supplies from Tarbela Dam.

Suggested Citation

  • Ghumman, A.R. & Khan, Z. & Turral, H., 2009. "Study of feasibility of night-closure of irrigation canals for water saving," Agricultural Water Management, Elsevier, vol. 96(3), pages 457-464, March.
  • Handle: RePEc:eee:agiwat:v:96:y:2009:i:3:p:457-464
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    References listed on IDEAS

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    1. Bos, M. G. & Burton, M. A. & Molden, David J., 2005. "Irrigation and drainage performance assessment: practical guidelines," IWMI Books, Reports H037064, International Water Management Institute.
    2. ,, 2004. "Problems And Solutions," Econometric Theory, Cambridge University Press, vol. 20(2), pages 427-429, April.
    3. ,, 2004. "Problems And Solutions," Econometric Theory, Cambridge University Press, vol. 20(1), pages 223-229, February.
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    1. A. Ghumman & R. Khan & Q. Khan & Z. Khan, 2012. "Modeling for Various Design Options of a Canal System," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 26(8), pages 2383-2395, June.
    2. Seyed Mehdi Seyed Hoshiyar & Nader Pirmoradian & Afshin Ashrafzadeh & Atefeh Parvaresh Rizi, 2021. "Performance Assessment of a Water Delivery Canal to Improve Agricultural Water Distribution," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 35(8), pages 2487-2501, June.
    3. Javaid Tariq & Muhammad Latif, 2010. "Improving Operational Performance of Farmers Managed Distributary Canal using SIC Hydraulic Model," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 24(12), pages 3085-3099, September.

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