International Journal of Water Resources and Environmental Engineering
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Article Number - 5F3C45D66439


Vol.9(11), pp. 254-263 , November 2017
DOI: 10.5897/IJWREE2017.0728
ISSN: 2141-6613



Full Length Research Paper

Hydraulic performance assessment of Tahtay Tsalit small scale irrigation scheme, Tigray, Ethiopia



Efriem Tariku Kassa
  • Efriem Tariku Kassa
  • Abergelle Agricultural Research Center, P. O. Box 44, Abiy Adi, Tigray, Ethiopia.
  • Google Scholar
Mekonen Ayana
  • Mekonen Ayana
  • Adama Science and Technology University, Institutional Development and Business Vice President, Adama, Ethiopia.
  • Google Scholar







 Received: 26 May 2017  Accepted: 10 July 2017  Published: 30 November 2017

Copyright © 2017 Author(s) retain the copyright of this article.
This article is published under the terms of the Creative Commons Attribution License 4.0


Assessment of irrigation performances is very essential while planning and chalking out management strategies for various irrigation. However, in Ethiopia, especially Tigray, performance evaluation of irrigation schemes is rarely conducted. The performance of Tahtay Tsalit irrigation scheme was not assessed yet and hence, this research was undertaken to assess the hydraulic performance of the irrigation scheme. The study was carried out during the irrigation season from September to November, 2016. The field measurements on canal dimensions, water flow measurements and water surface elevation were undertaken at selected sampling points. Simple descriptive statistics was employed for analysis of the data collected from field measurements and observations. However, hydraulic performance indicators were used to evaluate the performance of this irrigation scheme. Several factors such as flooding, sedimentation, design problems, damage of sluice gates, abstraction of irrigation water by unwanted plants has been identified in this irrigation scheme for mal-functional of different irrigation structures. Hydraulic performance of the irrigation system was evaluated using ten hydraulic performance indicators. There was no problem in irrigation adequacy (0.84 fair), equity (fair), dependability (0.057 good) and efficiency (0.77 fair) of irrigation water in this irrigation scheme. The average water surface elevation ratio, delivery performance ratio, and delivery duration ratio of the main canal during the monitoring period was less than one, greater than 5 and 150%, respectively. The highest sediment accumulation was observed at head and middle reaches of the irrigation scheme than the tail reaches. Generally, in this irrigation scheme there were a number of irrigation structures which had mal-functioned, and now required to be remodeled with sustainable solution to improve the performance of the irrigation scheme. Hence, it has been recommended that capacity building and awareness creation for irrigation water users, water committee, Woreda and Kebelle expertise are the main key factor to bring a change in irrigation water managements.

 

Key words: Hydraulic structures, hydraulic performance, small scale irrigation scheme.

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APA Kassa, E. T., & Ayana, M. (2017). Hydraulic performance assessment of Tahtay Tsalit small scale irrigation scheme, Tigray, Ethiopia. International Journal of Water Resources and Environmental Engineering, 9(11), 254-263.
Chicago Efriem Tariku Kassa and Mekonen Ayana. "Hydraulic performance assessment of Tahtay Tsalit small scale irrigation scheme, Tigray, Ethiopia." International Journal of Water Resources and Environmental Engineering 9, no. 11 (2017): 254-263.
MLA Efriem Tariku Kassa and Mekonen Ayana. "Hydraulic performance assessment of Tahtay Tsalit small scale irrigation scheme, Tigray, Ethiopia." International Journal of Water Resources and Environmental Engineering 9.11 (2017): 254-263.
   
DOI 10.5897/IJWREE2017.0728
URL http://academicjournals.org/journal/IJWREE/article-abstract/5F3C45D66439

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