The study aims at evaluation of land use suitability for surface irrigation by using GIS.rnThe evaluation of land in terms of the suitability classes was based on the method asrndescribed in FAO guideline for land evaluation. Multi-criteria decision evaluationrnmethod was used to evaluate the physical land characteristics of the study area for surfacernirrigation. There are techniques, which were used to weight and standardized the factors,rnwhich are used to evaluate the land in the study area. These include pairwise combinationrnand weighted linear combination. The factors that were considered for evaluation of thernland for surface irrigation is slope, soil drainage, soil texture, soil depth, soil type andrnland use. After evaluating the physical land capability for surface irrigation, irrigationrnsuitability map was developed. This map was classified in to five suitability classes basedrnon FAO guideline. The result that obtained are 41,650 ha (26.9%) very suitable, 24,100rnha (15.6%) suitable, 44,350 ha (28.7%) marginally suitable, 11,000ha (7.3%) marginallyrnnot suitable and 33, 2500ha (21.5%) permanently not suitable. The land in the study arearnwas evaluated for suitability of crops. Temperature and rainfall amount of the study arearnwere the factors in addition to the factors mentioned above used for surface irrigationrnevaluation. Maize and Cotton were selected to evaluate the land of the Beles sub Basin.rnSuitability maps for both maize and cotton were developed. The suitability crops mapsrnwere classified in to five suitability classes. Regarding maize 12,450ha (8.2%) veryrnsuitable, 23,140ha (14.9%) suitable, 54,600ha (35.3%) marginally suitable, 16,200harn(10.6%) marginally not suitable and 46,130ha (30.4%) permanently not suitable of therntotal Beles Sub basin. Suitability classes for Cotton were16, 150ha (10.7%) very suitable,rn22,540ha (15.1%) suitable, 49,020ha (32.6%) marginally, 17,200ha (11.5%) marginallyrnnot suitable and 46,130ha (30.1%) permanently not suitable