The objective of this study evaluates the design and operation of implementing solid sets in the city of Bahar in Hmeadn Province of Iran. For this purpose, ten fixed irrigation systems were selected and evaluated. Sprinkler uniformity tests were conducted by using a rain gauge in order to measure the uniformity coefficients of ten fields irrigated by solid set sprinkler irrigation systems. The evaluation indicated that the mean values of Christiansen coefficient uniformity, distribution uniformity, Potential efficiency in low quarter, application efficiency in low quarter, evaporation and wind losses, deep percolation losses and effectiveness of irrigation in ten solid sets were 74.5, 64.22, 58.26, 57.90, 8.33, 21.47 and 68 percentage respectively. In eight systems, the distribution uniformity and application efficiency in low quarter were less than the amount of recommended by Merriam and Keller. The use of large numbers of sprinklers on Irrigation Laterals has been the main reason for the low uniformity coefficient and distribution Uniformity systems.
