Estimating irrigation water in irrigation networks using satellite images

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Shahverdi Kazem; Ghodousi Hesam; Asadi Javad; Ojaghlou Hassan

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Journal Paper

Paper Information

Journal: Journal of Water and Irrigation Management Year:2024 | Volume:14 | Issue:1 Page(s): 157-167

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Information Journal Paper

Title

Estimating irrigation water in irrigation networks using satellite images

Author(s)

Shahverdi Kazem | Ghodousi Hesam | Asadi Javad | Ojaghlou Hassan | Issue Writer Certificate

Keywords

GLDAS

Optimal Operation

Performance Evaluation

Water requirement

Abstract

Water is one of the most important resources needed by human society and the first and most important factor for the production of agricultural products, more than 90% of this vital liquid is consumed in this sector. One of the most important factors that affect the performance of a water conveyance and distribution network is the water distribution and delivery program. In order to obtain turnouts’ discharges, the Water requirement of the eastern Aghili area was estimated using the Global Land Data Assimilation System (GLDAS) and controlled using the results of the NETWAT model. For this purpose, three-hour evapotranspiration was estimated with GLDAS, and the six-hour discharges of turnouts were calculated according to the cultivated area of each turnout and irrigation efficiency. The hydraulics of the eastern Aghili canal were simulated using the above-mentioned data for six hours. The results showed the appropriate accuracy of GLDAS so that at a maximum of 12.7%, GLDAS underestimated the evapotranspiration values compared to NETWAT. The minimum values of efficiency and adequacy indicators of 0.95 and 0.94, respectively, were obtained, which are in the "good" performance class.

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