Irrigation is a way of bringing water to crops by using force or gravity to move it from the source to the field, in order to make up for the lack of moisture in the soil wher e the crop's roots are. There are three main kinds of irrigation systems, which are surface irrigation, subsurface irrigation and pressurized irrigation system. One of the largest irrigation systems in Ethiopia, the Belles Sugar Development Project, lacks performance evaluation findings for improving the overall management of the system in terms of cutoff time, field dimensions, flow rate, advance and recession of water across the field surface, and boost efficiency such as application efficiency, uniformit y efficiency, and distribution efficiency. This is the primary issue that drives this research. In order to address the issue of management and operational practice possibilities, this study was designed. The experimental fields which had a size of 140 m X 100 m and slope between 0.27-0.5% (measured by water-level) were selected. The field has 67 furrows and from one fifth of it taken as the measuring test furrows which has 130 cm – 145 cm of furrow spacing. The general field layout and experimental set up common for a furrow set is the same for all furrows. The left and right to the measured test furrows is buffer furrows were used to hinder unexpected laterals moisture movement beyond the monitored furrows. A 3 inch standard Parshal flume, obtained from pawi research centre was installed near the down-stream end of the individual furrows in a furrow set except the buffer furrows, to monitor the rate of out flowing irrigation water. The application efficiency obtained from the test furrow irrigation field were 67.3 and 70.75% estimated and WinSRFR for furrow length 140 m and 64.13 and 66.3% for 80 furrow length for estimated and WinSRFR model respctively. For 120 furrow length 65.88% for estimated and 68.3 % for WinSRFR model. From the three furrow lengths better distribution uniformity was obtained from furrow length 120 m (90.98%) and less distribution uniformity obtained from furrow length 140 m (89.03%) from estimated. Keywords: Furrow lengths, Blocked-end furrow, Irrigation performances.