Perspective of Water Distribution Based on the Performance of Hydraulic Structures in the Varamin Irrigation Scheme (Iran)

Mohammadi, Amir H.; Rizi, Atefeh Parvaresh; Abbasi, Nader

doi:10.1002/ird.2301

Cited by 5 publications

(4 citation statements)

References 19 publications

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“…The resulting water allocation simulation RIBASIM model is configured without considering the water intake from other water resources (e.g., groundwater) and hydrological loss (e.g., infiltration and evapotranspiration) and delivery loss, which make a significant contribution to irrigation water supply [16,18,36,37], especially in the drought season. Thus, the above hydrological variables would be taken in account in the model development.…”

Section: Discussionmentioning

confidence: 99%

Modeling Probabilistic-Based Reliability Analysis for Irrigation Water Supply Due to Uncertainties in Hydrological and Irrigation Factors

Mai

Lin

et al. 2022

Sustainability

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This study aims to model a probabilistic-based reliability analysis, named the RA_IWS_Canal model, for calculating the probability of the irrigation water supply exceeding the water demand (i.e., reliability) within a multi-canal irrigation zone due to variations in hydrological and irrigation uncertainty factors. The proposed RA_IWS_Canal model is developed by coupling uncertainty and risk analysis with a logistic regression equation. The Zhudong irrigation zone, located within the Touqian River watershed in northern Taiwan, was selected as the study area, with the inflow from Shanping Weir, water supplies at 15 irrigation canals, and water intakes of two reservoirs (Baoshan and Baoshan II) and a water treatment plant (Yuandon); 1000 simulations of 10-day irrigation water allocations and resulting exceedance probabilities of the water supplies at the 15 canals were achieved using the multivariate Monte Carlo simulation and the uncertainty with the water allocation model (RIBASIM), and employed in the development of the proposed RA_IWS_Canal model. The model development and application results indicate that the uncertainty factors and the inflow from Shanping Weir markedly and positively influence the exceedance probability of the canal-based irrigation water supply to boost the corresponding reliability (about 0.8). The water intake of the Baoshan Reservoir has a lower relationship (by 0.19) than the Yuandon water treatment plant with the reliabilities of the irrigation water supplies at its downstream canals. As a result, the proposed RA_IWS_Canal model can evaluate the effect of not only the canal-based uncertainty factors, but also the regional features on the irrigation water supply reliability. In addition, using the proposed RA_IWS_Canal model, the planned irrigation water demands at various canals within a multi-canal irrigation zone could be accordingly formulated based on acceptable reliability.

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Section: Discussionmentioning

confidence: 99%

Modeling Probabilistic-Based Reliability Analysis for Irrigation Water Supply Due to Uncertainties in Hydrological and Irrigation Factors

Mai

Lin

et al. 2022

Sustainability

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“…They found that irrigation delivery service was excellent due to timely physical rehabilitation of the irrigation network. Mohammadi et al [9] conducted an assessment of Varamin irrigation scheme in Iran. The results of their research showed that most of the structures were poorly being operated, leading to unfair delivery and wastage of much water during water distribution.…”

Section: Previous Studiesmentioning

confidence: 99%

Evaluation of Water Delivery Performance of Nkhafi Irrigation Scheme in Dowa District, Malawi, Africa

Sibale¹,

Mwenelupembe²,

Chikabvumbwa³

et al. 2021

CWEEE

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This study evaluated the water delivery performance of Nkhafi irrigation scheme based on adequacy, water delivery efficiency, equity, dependability and irrigation efficiency. Primary data were collected from field measurements, scheduled interviews, group discussions and use of a structured questionnaire. CROPWAT 8.0 computer model was used to determine crop water requirements and irrigation requirements. The results revealed that adequacy, water delivery efficiency, equity, dependability and overall water delivery performance were (0.74; 0.82), (0.70; 0.80), (0.15; 0.20), (0.11; 0.21) and (0.80; 0.80) for 2017 and 2018 seasons respectively. The scheme overall irrigation efficiencies were 20% and 25% for 2017 and 2018 respectively. These findings revealed that scheme users failed to deliver adequate and dependable water in an effective manner in both growing seasons. This occurred due to insufficient water supply, poor irrigation scheduling, lack of adequate knowledge and skills in operating and rehabilitating hydraulic structures, siltation and water losses through seepage in canals. Therefore, it is recommended that major maintenance works need to be done along the whole canal network in order to achieve good overall water delivery performance. Furthermore, farmers need to be trained in water management, sustainable agricultural production practices, operation and maintenance of irrigation structures. The study has provided an insight on the status of the scheme hence encouraging scheme users to improve water delivery performance.

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“…Total project efficiency includes conveyance, distribution and field application efficiency as defined by Bos & Nugteren (1990). During the comprehensive evaluation, Varamin Irrigation scheme (Iran) was evaluated in terms of distribution (Mohammadi et al 2018) and conveyance efficiency (Mohammadi et al 2019). The results showed that the use of old equipment and poor management of operation and maintenance, caused a decrease in productivity.…”

Section: Introductionmentioning

confidence: 99%

Rehabilitation of operation regimes in aged irrigation schemes based on hydraulic simulation

2022

Self Cite

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The selection and employment of proper methods in water distribution causes increasing in water productivity and the level of satisfaction of water users. It is faced with more difficulties in aged irrigation projects due to temporal changes such as changes in the crop patterns, development of the command area and destruction of canals and hydraulic structures. The plan of operation methods have some hydraulic and social complexities and therefore is usually simplified or implemented experimentally. This research investigates the best options for water distribution to the paddy fields in a subunit of Sefidroud irrigation scheme based on field survey, recording real data and hydraulic simulation with employing SOBEK hydrodynamic model. Different operation scenarios were defined and then simulated in the current physical state of the scheme through replacing the exhausted intake structures with sluice gates. Finally, the better operation scenarios during the irrigation season were suggested based on the distribution indices. The results show that in spite of the current situation, water loss could reach the minimum by employing modification scenarios and indices of adequacy and equity of water distribution improve.

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Perspective of Water Distribution Based on the Performance of Hydraulic Structures in the Varamin Irrigation Scheme (Iran)

Cited by 5 publications

References 19 publications

Modeling Probabilistic-Based Reliability Analysis for Irrigation Water Supply Due to Uncertainties in Hydrological and Irrigation Factors

Modeling Probabilistic-Based Reliability Analysis for Irrigation Water Supply Due to Uncertainties in Hydrological and Irrigation Factors

Evaluation of Water Delivery Performance of Nkhafi Irrigation Scheme in Dowa District, Malawi, Africa

Rehabilitation of operation regimes in aged irrigation schemes based on hydraulic simulation

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