Nowadays, worldwide, even in the economically developed countries, for what is the need to improve irrigation facilities, all kind of technical, organizational, institutional and scientific solutions are sought. The improvement of irrigation systems can be driven by the evolution or the altering of their performance parameters and goals during the operation process. The goals are various: some are related to the achievement of enhanced performances as regards the agricultural, economical and hydraulic efficiency of the irrigation system; some are related to the proper evacuation of excess surface water and the regulation of groundwater levels via drainage systems; some are related to the trend to reduce the amount of eroded soil to a minimum and to ensure a better and cheaper protection of soils. Performance becomes strategic when it takes the form of an activity carried along a number of years, situation when it becomes possible to assess the way in which resources have been used and what has been the value of the operational level. Also it is possible to review the objectives of the long-term operation and of all operational procedures, so to make the irrigation system proper and compliant to the farmers’, managers’ and community’s demands.