Hydraulic performance evaluation of the water conveyance system of Doho rice irrigation scheme in Uganda.
AbstractPoor water distribution is a major problem in many surface irrigation schemes in Uganda, especially at the tail reaches. This has led to reduced crop yield from these water-stressed fields. This study reports the results of evaluating the hydraulic performance of the water conveyance system of Doho Rice Irrigation Scheme for one cropping season for the first quarter of 2019. For the main canal, the conveyance efficiency indicator was used while for the lateral canals indicators of adequacy, efficiency, dependability, equity, and the equity ratio of head to tail were used to evaluate the hydraulic performance. Performance indicators were computed at the head and tail ends of the canals thus comparing the inlet and distribution processes. Field measurements coupled with simulation techniques were used to obtain the delivered and required flows. It was found that the acceptable average hydraulic performance indicators of the scheme were 0.84, 0.79, 0.07 and 0.26 for adequacy, efficiency, dependability, and equity respectively, the tail reaches suffer in performance with the adequacy, dependability, and equity ratio at 0.68, 0.12, and 3.13 respectively. Improving hydraulic performance of the scheme necessitates reduction of water conveyance losses, adherence to distribution plans and monitoring of diversions to the canals.
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
Open access articles published in the Journal of Sustainable Research in Engineering are under the terms of the Creative Commons Attribution (CC BY) License which permits use, distribution and reproduction in any medium, provided the original work is properly cited. The CC BY license permits commercial and non-commercial re-use of an open access article, as long as the author is properly attributed.
Copyright on any research article published in the Journal of Sustainable Research in Engineering is retained by the author(s). The authors grant the Journal of Sustainable Research in Engineering with a license to publish the article and identify itself as the original publisher. Authors also grant any third party the right to use the article freely as long as its original authors, citation details and publisher are identified.
Use of the article in whole or in part in any medium requires proper citation as follows:
Title of Article, Names of the Author, Year of Publication, Journal Title, Volume(Issue) and page. Links to the final article on the JSRE website are encouraged.
The Creative Commons Attribution License does not affect any other rights held by authors or third parties in the article, including without limitation the rights of privacy and publicity. Use of the article must not assert or imply, whether implicitly or explicitly, any connection with, endorsement or sponsorship of such use by the author, publisher or any other party associated with the article.
For any reuse or distribution, users must include the copyright notice and make clear to others that the article is made available under a Creative Commons Attribution license, linking to the relevant Creative Commons web page. Users may impose no restrictions on use of the article other than those imposed by the Creative Commons Attribution license.
To the fullest extent permitted by applicable law, the article is made available as is and without representation or warranties of any kind whether express, implied, statutory or otherwise and including, without limitation, warranties of title, merchantability, fitness for a particular purpose, non-infringement, absence of defects, accuracy, or the presence or absence of errors.