Performance Evaluation of Bedene Alemtena Small Scale Irrigation Scheme in Hallaba Special Woreda, Southern Ethiopia

Dessalew, T.; Ayalew, Abebe Temesgen; Desalegn, T.; Mathewos, Markoss; Alemu, Getahun

doi:10.4236/oalib.1102021

Cited by 5 publications

(6 citation statements)

References 3 publications

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“…The current finding revealed that distribution uniformity was above sufficient, in which 30 and 65% were taken as poor and sufficient, respectively [24]. Similar findings were reported by many authors, which the water distribution uniformity was greater than 90 % [17,21,25,26]. However, Dinka [27] also reported conflicting results that average water distribution uniformity of the Ketar medium Scale irrigation Scheme was 61.6% due to the scheme operating at flow rates below or above the design flow rates.…”

Section: Water Distribution Uniformity (Du)supporting

confidence: 88%

Technical Performance Evaluation of Small-Scale Irrigation Scheme at Wondo Genet, Ethiopia

Tesfaye¹,

Jemal²

2020

AJSET

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Expanding efficient irrigation development on various scales is one of the best alternatives to provide reliable and sustainable food security. However, many irrigation schemes in developing countries in general and particularly in Ethiopia are performing below capacity. This study was conducted to evaluate the performance of wosha soyama irrigation scheme at Wondo Genet South Nation Nationality and People Regional State, Ethiopia. The evaluation carried out using standard technical performance indicators including conveyance, application, water storage, water distribution uniformity efficiency and deep percolation loss were used at the head, middle and tail reach of the scheme. The study shows that application efficiency was very low which is 48.2% due to higher water loss through deep percolation. Conveyance efficiency, water storage, water distribution uniformity efficiency, and deep percolation loss were revealed 55.6, 89.8, 91.7 and 51.8%, respectively. The overall efficiency was also below the desired level which is 26%. Based on the above observation, adoption of water saving practices such as deficit irrigation, surge and cutoff application to improving application, frequent maintains of water conveyance system can enhance the conveyance efficiency of the scheme.

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Section: Water Distribution Uniformity (Du)supporting

confidence: 88%

Technical Performance Evaluation of Small-Scale Irrigation Scheme at Wondo Genet, Ethiopia

Tesfaye¹,

Jemal²

2020

AJSET

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“…Several internal and external performance indicators were mentioned by Molden et al (1998) to assess the performance of irrigation schemes. From the internal indicators, storage, application and conveyance efficiency were selected to evaluate the scheme's performance (De Alwis & Wijesekera, 2011; Dessalew et al, 2016; Kartal et al, 2020). Similarly, agricultural, water supply, physical and financial performance indicators were selected from the external indicators based on Değirmenci et al (2017), Agide Dejen (2012), Bumbudsanpharoke and Prajamwong (2015) and Al‐Said et al (2012).…”

Section: Methodsmentioning

confidence: 99%

Evaluating the performance of small‐scale irrigation schemes in subhumid Ethiopian highlands

Belay¹,

Assefa

Belay

et al. 2022

Irrigation and Drainage

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This study was conducted to evaluate the performance of two small-scale irrigation (SSI) schemes in the subhumid Ethiopian highlands. Water application at the farm level and flow velocity along the main canal were monitored using a Parshall flume and current meter, respectively. The infiltration was measured at the head, middle and tail of the scheme within the command area using a double-ring infiltrometer. Soil samples were collected using an auger up to 60 cm in depth. Climatic and agronomic data were supplied to the crop water assessment tool (CROPWAT) to determine crop water requirements. The results showed that the average conveyance efficiency for the lined main canal was 90% and 92% for the Mugie and Fesas SSI schemes, respectively. The conveyance efficiency for the unlined main canal was in the order of 86% and 87% for the Mugie and Fesas SSI schemes, respectively. On the other hand, the average application efficiency and overall efficiency were found to be 56% and 51%, respectively, with a storage efficiency of 50% for the Mugie irrigation scheme. Similarly, the overall, application and storage efficiencies were 50%, 54% and 56%, respectively, for the Fesas irrigation scheme. Failure of operating gates, canal siltation and leakage through the main canals were the main causes of poor performance. K E Y W O R D S irrigation scheme performance, small-scale irrigation, subhumid Ethiopian highlands Résumé Cette étude a été réalisée pour évaluer les performances de deux projets d'irrigation à petite échelle (SSI) dans les hauts plateaux subhumides éthiopiens. L'application de l'eau au niveau de la ferme et la vitesse d'écoulement le long du canal principal ont été surveillées à l'aide d'un carneau de Parshall et d'un compteur de courant, respectivement. L'infiltration a été mesurée à la tête, au milieu et à la queue du schéma dans la zone de commande à l'aide d'un infiltrateur à double anneau. Des échantillons de sol ont été prélevés à l'aide d'une auget jusqu'à 60 cm de profondeur. Des données climatiques et agronomiques ont été fournies au CROPWAT pour déterminer les besoins en eau des cultures. Les résultats ont montré que le rendement moyen du transport pour le Article title in French: Evaluation des résultats des projets d'irrigation à petite échelle dans les hauts plateaux subhumides d' Ethiopie.

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“…It was intended to serve around 157 households found in Boneya Molo Kebele. The conveyance system of the irrigation scheme consists of a Main canal (MC) taking water from the corresponding intake of the weir [10][11][12]. The main canal starts from the water abstraction site on the side of the weir and conveys water for a length of 2535 m of the main canal, for the first 2500 m it is a lined canal and for the rest, it is an unlined canal.…”

Section: Diversion Headwork Structuresmentioning

confidence: 99%

“…The model needs climatic information, such as the mean monthly precipitation, minimum and maximum temperature ( o c), relative humidity (%), wind speed (km/day), and sunshine hours (hr), to calculate the reference evapotranspiration (ETO) value. After estimating effective rainfall using the USDA Soil Conservation Service (SCS) method, the determination of IWR was carried out [12].…”

Section: Determination Of Cwr and Iwrmentioning

confidence: 99%

Assessing the Performance of Conveyance System of Jato Small-Scale Irrigation Scheme of Wayu-Tuka District, East Wallaga Zone, Oromia, Ethiopa

Asefa,

Adeba,

Mosisa

2024

AJCE

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The performance assessment of a small-scale irrigation project plays a vital role in evaluating its effectiveness and addressing potential shortcomings in achieving desired outcomes. This study aims to provide a comprehensive analysis of the Jato small-scale irrigation project, assessing its performance based on various criteria and indicators. The study evaluates the project's infrastructure maintenance and system efficiency. The designed command area of the scheme is seventy-five (75 ha) but the current irrigated area of the scheme is sixty (60ha) only. To achieve the objectives, primary and secondary data were collected. To gather both primary and secondary data, data-gathering techniques include surveys, interviews, field observations, and meteorological data. Before, during, and after an irrigation event, while farmers were carrying out their regular irrigation practices, several field characteristics were measured and/or observed. These data included the type of crop, irrigation water discharge in the canal, and field size. A survey concerning the availability of water was also carried out among farmers. CROPWAT 8.0 Software was used to organize the crop pattern of the study area along with other relevant data, including soil, climate, rain crop, and crop pattern. Water flow measurement results of the Jato small-scale irrigation scheme at the head, middle, and tail of the lined & unlined main canal were found to be 53.6l/s, 45.4 l/s, and 29.9l/s respectively. The average water flow measurement result of the scheme is 43l/s which reduced from required flow by 18.15l/s. From the analyses of the water balance indicators, the canal conveyance efficiency, canal conveyance loss, application efficiency, and overall efficiency were found to be 70%, 30%, 70%, and 50% respectively. The overall average main canal conveyance efficiency and water conveyance loss were below the recommended values. The studies have shown that the effective infrastructure, irrigation ratio, and water surface elevation ratio of the scheme were found to be 66.7%, 80%, and 66% respectively. However, there were certain areas for improvement identified, such as the need for better coordination among project stakeholders and enhanced maintenance practices to ensure the long-term functionality of irrigation infrastructure.

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Performance Evaluation of Bedene Alemtena Small Scale Irrigation Scheme in Hallaba Special Woreda, Southern Ethiopia

Cited by 5 publications

References 3 publications

Technical Performance Evaluation of Small-Scale Irrigation Scheme at Wondo Genet, Ethiopia

Technical Performance Evaluation of Small-Scale Irrigation Scheme at Wondo Genet, Ethiopia

Evaluating the performance of small‐scale irrigation schemes in subhumid Ethiopian highlands

Assessing the Performance of Conveyance System of Jato Small-Scale Irrigation Scheme of Wayu-Tuka District, East Wallaga Zone, Oromia, Ethiopa

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