Changing Furrow Irrigation to Increase Efficiency and Feasibility Study of Reusing Surface Runoff

Dayer, Ehsan; Pazira, Ebrahim; Kashkuli, Heydar Ali; Sedghi, Hossein

doi:10.28991/cej-030957

Cited by 6 publications

(4 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…On the other hand, the average storage efficiency of Fesas SSI ranged from 56% to 58% during the first irrigation season and 52% to 59% during the second irrigation season. This finding is consistent with the recommendation given in Dayer et al (2018), with an average water storage efficiency of furrow irrigation in the range of 50%–55%.…”

Section: Resultssupporting

confidence: 93%

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

Belay¹,

Assefa

Belay

et al. 2022

Irrigation and Drainage

View full text Add to dashboard Cite

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.

show abstract

Section: Resultssupporting

confidence: 93%

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

Belay¹,

Assefa

Belay

et al. 2022

Irrigation and Drainage

View full text Add to dashboard Cite

show abstract

“…This nding is consistent with the recommendation given in Dayer et al, (2018) with the average water storage e ciency of furrow irrigation in the range of 50-55%. Note: Wn, Ws, and Es are water needed in the root zone before irrigation, water stored in the root zone during irrigation, and storage e ciency, respectively.…”

Section: Internal Performance Indicatorssupporting

confidence: 91%

Evaluating the Performance of Small-Scale Irrigation Schemes in Sub Humid Ethiopian Highlands; a case study in Mugie and Fesas

Belay¹,

Assefa

Belay

et al. 2022

Preprint

View full text Add to dashboard Cite

Background This study was conducted to evaluate the performance of two small-scale irrigation (SSI) schemes in the sub-humid Ethiopian highlands. Water application at the farm level was monitored using partial flume and the average flow velocity along the main canal was measured using the current meter. The infiltration measurement was conducted 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 60cm depth. Climatic and agronomic data were collected from the nearby meteorological station and woreda agricultural office, respectively. CROPWAT was used to determine the water requirement of crops. Results The result showed that the average conveyance efficiency for the lined main canal was 90% and 92% for Mugie and Fesas SSI, respectively. The conveyance efficiency for the unlined main canal was in the order of 86% and 87% for Mugie and Fesas SSI. On the other hand, the average application efficiency and overall efficiency were found to be 56% and 51%, respectively, with storage efficiency of 50% for Mugie irrigation scheme. Similarly, the overall, application and storage efficiencies were found 50%, 54%, and 56%, respectively, for Fesas irrigation scheme. The relative irrigation and water supplies were 1.23 and 3.17, respectively, for Mugie SSI, while the supplies were 0.94 and 2.45, respectively, for Fesas SSI. Conclusions Conveyance efficiency for both Mugie and Fesas schemes was found below standard (95%) and overall efficacy was low as well (~50%). Failure of operating gates in the main canal, overtopping of water from the main canal due to canal siltation, and leakage through the main canals were the main causes for poor performance. Improvement measures are needed for both Mugie and Fesas irrigation schemes and institutional support is vital to improve and maintain the failure of infrastructures for better performance.

show abstract

“…In southwest of Iran, Khuzestan province which holds major water resources of the country [11], has revealed a frequent drought occurrence during the last decades [12]. At least one extremely severe drought took place in the last fifteen years in Khuzestan [13,14]. The average temperature and precipitation in Khuzestan are 23.3 °C and 322.6 mm per year respectively [15].…”

Section: Introductionmentioning

confidence: 99%

Copula Based Spatial Analysis of Drought Return Period in Southwest of Iran

Kavianpour¹,

Seyedabadi²,

Moazami³

et al. 2020

Period. Polytech. Civil Eng.

View full text Add to dashboard Cite

In the past years, Khuzestan province which is located in the southwest of Iran has experienced severe droughts. Drought can be explained by its characteristics known as duration or severity. However, combination of the two features by probabilistic approach is appeared to be a well improved method to describe the phenomena. The aim of this study is to provide a more accurate statistical method of determining drought based on simultaneous analysis of two drought characteristics. Here, precipitation data from twenty stations were used to determine drought characteristics, by Standardized Precipitation Index (SPI). Joint probability function of two variables were built via copula functions. The drought return period was calculated in the form of two scenarios. The first scenario is, based on an assumption that drought is recognized by at least one of the two specific characteristics. Drought in the second scenario is distinguished by the two characteristics in a joint probabilistic form. According to research results, there was no significant difference between the north and south of Khuzestan in the study of single characteristics of drought. While analyzing two characteristics of the drought, the return period in the north was shorter than the south. The return period of droughts in the east was always shorter than in the west. The drought return period varies from 30 to 52 months and 50 to 87 months for the first and second scenarios, respectively.

show abstract

Changing Furrow Irrigation to Increase Efficiency and Feasibility Study of Reusing Surface Runoff

Cited by 6 publications

References 6 publications

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

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

Evaluating the Performance of Small-Scale Irrigation Schemes in Sub Humid Ethiopian Highlands; a case study in Mugie and Fesas

Copula Based Spatial Analysis of Drought Return Period in Southwest of Iran

Contact Info

Product

Resources

About