Abstract
Water resources are among the most important natural riches of the countries, so this resource must be used correctly and sustainable, especially in the agriculture sector. The Southeastern District of Turkey, has abundant water resources but is known as a region where the problems arising from the excessive use of water. In this study, 5 irrigation schemes (Akçakale, Şanlıurfa, Yaylak Plain, Upper Harran, Bozova) in the Southeastern District of Turkey were chosen as a material to investigate the performance. It is aimed to assess the irrigation schemes in the district with performance indicators used widely by researchers. As an assessment method, ANOVA was used to determine differences of performance indicators among irrigation schemes, multiple regression and correlation were used to explain statistical relation among performance indicators. As a result, irrigation water supplied to users per unit irrigated area (Wirrigated) can be explained with irrigation ratio (Iratio), irrigation water supplied to users per unit command area (Wcommand), relative water supply (Rws) and output per unit irrigation water supplied to users (Owater) (R2= 0.98). In the region, the average Rws was found 2.38 although irrigation methods used by farmers were generally sprinkler. The study also concluded that serious operation, maintenance and management problems exist in the irrigation schemes of the district.
Highlights
70% of the freshwater in Turkey is consumed in agriculture
The researchers developed a number of performance indicators for evaluating irrigation schemes (Molden et al 1998) and these indicators were improved with the following studies (Burt 2001; Malano et al 2004) including methodology for modernizing irrigation management (Renault et al 2007)
The main aim of this study is to investigate the district including 5 irrigation schemes (Akçakale, Şanlıurfa, Yaylak Plain, Upper Harran, Bozova) located in the Southeastern District of Turkey
Summary
70% of the freshwater in Turkey is consumed in agriculture. Irrigation associations, irrigation cooperatives, village legal entity are responsible for the management of water used in agricultural activities (DSI 2017). The researchers developed a number of performance indicators for evaluating irrigation schemes (Molden et al 1998) and these indicators were improved with the following studies (Burt 2001; Malano et al 2004) including methodology for modernizing irrigation management (Renault et al 2007). These performance indicators provide an overview of the performance in irrigation schemes. The evaluation of irrigation schemes with the performance indicators are widely used in other countries (Rodriguez-Diaz et al 2004; Denis et al 2017; Alcon et al 2017; Zema et al 2018; Muema et al 2018)
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