Evaluation of water use in irrigation cooperatives operating in Ankara Polatlı district

This study was carried out to evaluate the current irrigation habits and irrigation problems of irrigation cooperatives operating in Polatlı district of Ankara province, and performance indicators for a determined cooperative. By interviewing all of the cooperatives operating in the study area, data that can be evaluated according to their performance indicators were obtained and Beşköprü Village Irrigation Cooperative, which irrigates with the surface water source (Sakarya River), was selected for performance evaluation. For this purpose, performance indicators for determining water use efficiency, agricultural efficiency and social and economic efficiency in the cooperative irrigation area were evaluated under three main headings. In the study carried out, the irrigation water distributed in the project area was found to be 660000 m3 and the annual irrigation water amount distributed to the unit area was found to be 942.86 m3/ha. The annual amount of irrigation water distributed to the unit irrigated area was determined as 1885.71 m3/ha, the annual water supply rate was determined as 0.15, and the return rate of the investment as 103%. As a result of the economic evaluation, the ratio of maintenance cost to income was calculated as 14.9%, and the total operating, maintenance and management costs per unit area were calculated as 928.57 TL/ha (97.33 $/ha). Water fee collection performance in the field is 100%. The total agricultural production value in the area is 7512250 TL (787447.59 $), the income obtained for the unit irrigation area is 10731.78 TL/ha (1124.92 $/ha), the income obtained for the irrigated unit area is 21463.57 TL/ha (2249.85 $/ha). The income obtained for the unit irrigation water taken into the network was determined as 11.38 TL/m3 (1.19 $/m3), and the income obtained for the consumed unit irrigation water was determined as 2.33 TL/ m3 (0.24 $/m3).