Evaluation of Irrigation Network Using New Classic Irrigation Efficiency Concepts (Case study: Hamody Irrigation System of Khozestan)

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NAHVINIA MOHAMMAD JAVAD; LIAGHAT ABDOLMAJID; ABBASI FARIBORZ

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Journal: Iranian Journal of Soil and Water Research Year:2019 | Volume:50 | Issue:3 Page(s): 567-579

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Title

Evaluation of Irrigation Network Using New Classic Irrigation Efficiency Concepts (Case study: Hamody Irrigation System of Khozestan)

Author(s)

NAHVINIA MOHAMMAD JAVAD | LIAGHAT ABDOLMAJID | ABBASI FARIBORZ | Issue Writer Certificate

Keywords

Application EfficiencyQ2

Distribution EfficiencyQ2

Effective EfficiencyQ1

ETQ1

Net EfficiencyQ1

Water StressQ1

Abstract

This study was carried out to evaluate Hamody irrigation nETwork (in an area of 3079 ha) using classic and new classic irrigation efficiency concepts. For this purpose, firstly the main district’ s water inputs (irrigation, rainfall and canal releases) and outputs (actual crop evapotranspiration, drainage outflow and canal seepage) were measured or estimated during the hydrological years (2006-2009). Then, the ET="_blank">Application Efficiency (classic concept) and the nET and effective efficiencies (neoclassic concept) were estimated at the nETwork level. Finally, different scenarios of water allocation were evaluated by considering new concepts of irrigation efficiency. The assessment scenarios include 65, 75 and 85% of water supply needs, 100% Crop Water Requirement (CWR) and a fraction of CWR without significant reduction in yield. The annual average outflows were 16% higher than the inflows, presumably due to canal seepage and lateral groundwater inflows from neighboring lands. Distribution, application and total efficiencies were estimated 68, 53 and 44%, respectively, indicating low irrigation performance in the irrigation nETwork. Despite the high volume of applied irrigation water, the actual ET was 19% less than the potential ET, indicating water-stress and crop yield reduction. The assessment of surface irrigation systems using new classical approach showed that the nET (0. 77) and effective (0. 65) efficiencies were more than the classical efficiency (0. 53). The results of this study showed 19-47% water saving in allocation scenarios using the new concepts of efficiency.

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APA: Copy

NAHVINIA, MOHAMMAD JAVAD, LIAGHAT, ABDOLMAJID, & ABBASI, FARIBORZ. (2019). Evaluation of Irrigation Network Using New Classic Irrigation Efficiency Concepts (Case study: Hamody Irrigation System of Khozestan). IRANIAN JOURNAL OF SOIL AND WATER RESEARCH, 50(3 ), 567-579. SID. https://sid.ir/paper/225393/en

Vancouver: Copy

NAHVINIA MOHAMMAD JAVAD, LIAGHAT ABDOLMAJID, ABBASI FARIBORZ. Evaluation of Irrigation Network Using New Classic Irrigation Efficiency Concepts (Case study: Hamody Irrigation System of Khozestan). IRANIAN JOURNAL OF SOIL AND WATER RESEARCH[Internet]. 2019;50(3 ):567-579. Available from: https://sid.ir/paper/225393/en

IEEE: Copy

MOHAMMAD JAVAD NAHVINIA, ABDOLMAJID LIAGHAT, and FARIBORZ ABBASI, “Evaluation of Irrigation Network Using New Classic Irrigation Efficiency Concepts (Case study: Hamody Irrigation System of Khozestan),” IRANIAN JOURNAL OF SOIL AND WATER RESEARCH, vol. 50, no. 3 , pp. 567–579, 2019, [Online]. Available: https://sid.ir/paper/225393/en

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