A land capability classification method for irrigated and drained lands was outlined in order to build up management alternatives. This methodology suggests the grouping of soils in Land Management Units (LMU) as cartographical and ecological units similar in its management needs. These units are those evaluated with respect to Irrigation Management Types (ITM) taking account of land qualities which relate to soil physical and chemical characteristics and the irrigation management requirements. The enclosure of land conditions and its irrigation management requirement defines the land capability class. Lands with the best land capability for irrigation are afterwards reevaluated from the crop production stand point, leading to a new group named Land Use Type. This methodology allows to choose several alternatives for the proper land use under irrigation practices without damaging soil and water resources.