University of Tehran Press Iranian Journal of Soil and Water Research 2008-479X 48 5 2018 01 21 Assessment of sprinkler irrigation systems with emphasis on performance criteria and operation problems Assessment of sprinkler irrigation systems with emphasis on performance criteria and operation problems 1043 1052 64761 10.22059/ijswr.2018.229630.667644 FA Khaled Ahmadaali University of Tehran Yaser Hamdi Ahmadabad University of Tehran Nazgol Hosseini Pazhouh University of Imam Khomeini, Qazvin Abbas Ali Pourmohseni Shahid Chamran University of Ahvaz Journal Article 2017 03 11 In this research, the pressurized irrigation systems including 7 center pivots, 3 linears and 8 solid-sets with portable sprinkler systems in the provinces of Tehran, Qazvin, Alborz, and Qom were assessed using the uniformity coefficient, the distribution uniformity, Potential Application Efficiency of Low Quarter, Application Efficiency of Low Quarter, and Irrigation Adequacy indices. In order to compare the assessed systems, the weighted averages of all used indices were calculated. The research results showed that the weighted average of the mentioned indices were 78, 63, 69, 69 and 49 percent for the center pivot system; 75, 68, 64, 55 and 62 percent for the linear system; and 77, 66, 60, 60 and 61 percent for the solid-set system with portable sprinkler ,respectively. By analyzing the indices and comparing them with the field and pumping stations’ observations, it was found that the incorrect design, mismatch between the designs, performance and management, and incorrect operation are the main causes of inefficient performance. In this research, the pressurized irrigation systems including 7 center pivots, 3 linears and 8 solid-sets with portable sprinkler systems in the provinces of Tehran, Qazvin, Alborz, and Qom were assessed using the uniformity coefficient, the distribution uniformity, Potential Application Efficiency of Low Quarter, Application Efficiency of Low Quarter, and Irrigation Adequacy indices. In order to compare the assessed systems, the weighted averages of all used indices were calculated. The research results showed that the weighted average of the mentioned indices were 78, 63, 69, 69 and 49 percent for the center pivot system; 75, 68, 64, 55 and 62 percent for the linear system; and 77, 66, 60, 60 and 61 percent for the solid-set system with portable sprinkler ,respectively. By analyzing the indices and comparing them with the field and pumping stations’ observations, it was found that the incorrect design, mismatch between the designs, performance and management, and incorrect operation are the main causes of inefficient performance. https://ijswr.ut.ac.ir/article_64761_e93d760b899847662abaa30aeb944d92.pdf