Simulation of water allocation in Sefidroud irrigation and drainage network for sustainability of rice production

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Simulation of water allocation in Sefidroud irrigation and drainage network for sustainability of rice production Maryam Salar‑Ashayeri1 · Mohammadreza Khaledian1,2 · Mohammad Kavoosi‑Kalashami1 · Mojtaba Rezaei3 Received: 21 January 2020 / Revised: 31 March 2020 / Accepted: 7 April 2020 © The International Society of Paddy and Water Environment Engineering 2020

Abstract With the growing population and people’s increasing livelihoods, the need for agricultural products is increasing day by day, which in turn implies an increase in the water requirement in the agriculture sector. However, in countries such as Iran, the main problem in the agriculture sector is mismanagement, not lack of water resources as popularly claimed. The purpose of this study is to investigate the performance of the Sefidroud irrigation and drainage network and internal water resources of Guilan province in order to optimize the allocation of water resources with integrated management. The WEAP software was used for this purpose. Data were extracted from the Guilan Regional Water Authority and network reports and were added to the software. Different feasible management scenarios were evaluated. According to the results, the downstream environmental need of the Sefidroud irrigation network has always been met even in the worst conditions, but the Sefidroud irrigation network alone cannot meet the irrigation requirement of the region. Keywords  Water demand · Water supply · WEAP

Introduction Many researchers around the world have applied WEAP to simulate how water is distributed, e.g., Fatemi et al. (2013), Adgolign et al. (2016), and Winter et al. (2017). Alfarra (2004) for the Naivasha River Basin and Ouled Zaoui et al. (2010) for the Souk-AHRAS Basin of Algeria, using WEAP, concluded that the main problem in the agriculture sector was improper management rather than water scarcity. Overallocation of demand in some areas prevented meeting the demand in other areas. Alfarra et al. (2012) examined the effects of rapid population growth and agricultural development using WEAP and defined five scenarios. The results showed that while the agricultural sector maintained its * Mohammadreza Khaledian [email protected] Mohammad Kavoosi‑Kalashami [email protected] 1



Faculty of Agricultural Sciences, University of Guilan, P.O. BOX 41635‑3756, Rasht, Iran

2



Department of Water Engineering and Environment, Caspian Sea Basin Research Center, Rasht, Iran

3

Rice Research Institute of Iran, Agricultural Research, Education and Extension Organization (AREEO), Rasht, Iran



output, the continuation of the current consumption trend would lead to a widening gap between future supply and demand for water in Amman. Mehta et al. (2013) defined three scenarios and compared in a basin of California with WEAP to provide a solution to the effects of climate change. The maximum water saving is achieved by combining the change in the pattern of efficient cultivation with the development of irrigation technology. Esteve et al. (2015) appli