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Conveyance Efficiency and Maintenance Performance Evaluation of Canals at Serenta Irrigation Scheme, Northern Ethiopia

Evaluation of conveyance efficiency and maintenance performance of canals in irrigation schemes is very important to improve the productivity of the irrigation scheme as whole. Thus, results help to improve the canals problem and the water loss. However, canals conveyance efficiency of Serenta irrigation scheme is not yet evaluated. Therefore, this study was conducted to evaluate the canals conveyance efficiency and maintenance performance of the Serenta Irrigation Scheme. To evaluate the canals conveyance efficiency, canals flow were measured using Parshall flumes (for secondary and tertiary canals) and Floating method (for main canal). The results from the field measurement revealed that, the average conveyance efficiency of the main canal measured from five observations was 96.2%. The average discharge of this canal was 0.104m3/s at upper measuring point and 0.1m3/s at lower position. Thus, the amount of water lost was estimated to be 4 l/s or 0.0076 l/s/m. The source of loss was observed during the field visiting and measurement, which was due to seepage loss. From the 4 (four) secondary canals of the irrigation scheme, the average conveyance efficiency ranged from 75.86% to 91.9% with an overall mean efficiency of 86.3%. The lowest conveyance efficiency (75.86%) was observed in secondary canal 3 (SC-3). This reflected that the high amount of water loss, due to broken and cracked condition of the structure at this particular canal, which contributed for deep and off farm loss. And, the average conveyance efficiencies of the tertiary canals ranged from 63.5% to 91.3%, with the overall mean value of 76.6%. The low conveyance efficiency observed in tertiary canal 6 (TC-6), implied for high mount of loss, due to the weak earth work canal (small width), a lot of water was flowing over the canal. Unlike the main canal the secondary and tertiary canals were under performance. So to reduce water loss and improve the performance the irrigation scheme, the conveyance efficiency of the irrigation scheme should be improved through regular canal cleaning and maintenance of the broken structures by mobilizing farmers to participate on the activities.

Conveyance Efficiency, Performance Evaluation, Ethiopia

APA Style

Gebre Gidey, Husen Siri. (2021). Conveyance Efficiency and Maintenance Performance Evaluation of Canals at Serenta Irrigation Scheme, Northern Ethiopia. Fluid Mechanics, 7(2), 29-34. https://doi.org/10.11648/j.fm.20210702.12

ACS Style

Gebre Gidey; Husen Siri. Conveyance Efficiency and Maintenance Performance Evaluation of Canals at Serenta Irrigation Scheme, Northern Ethiopia. Fluid Mech. 2021, 7(2), 29-34. doi: 10.11648/j.fm.20210702.12

AMA Style

Gebre Gidey, Husen Siri. Conveyance Efficiency and Maintenance Performance Evaluation of Canals at Serenta Irrigation Scheme, Northern Ethiopia. Fluid Mech. 2021;7(2):29-34. doi: 10.11648/j.fm.20210702.12

Copyright © 2021 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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