Evaluation of the hydraulic performance of irrigation structures should be used in proper planning of water distribution and the removal of social tensions at water user level. There are several hydraulic indicators that could be interpreted based on social realities. In this study, besides determination of water distribution and conveyance indicators of the Behbahan irrigation scheme, social status was investigated in relation to them. Accordingly, adequacy, dependability and equity indicators in this scheme are poor. Meanwhile, 54% of water users are not satisfied with the performance of water delivery. Based on the questionnaires, training about water distribution is the main request by water users. In this research with a different view about the evaluation of irrigation schemes, existing problems were described from the social perspective. The adequacy indicator is in good condition upstream of the network, while in downstream it is about 40%. Although the knowledge and awareness of water users upstream and downstream are almost equal, only 50% of downstream water users have a relative desire to participate in water services (68% for upstream water users) and their satisfaction is within 20% (62% for upstream water users). Finally, evaluation of hydraulic indicators will be completed and will solve more problems, by considering the social roots of the results. K E Y W O R D S irrigation services, performance of operation, socio-hydraulic performance, water users' behaviour Résumé L'évaluation des performances hydrauliques des ouvrages d'irrigation serait utilisée pour planifier correctement la distribution de l'eau et éliminer les tensions sociales au niveau des utilisateurs de l'eau. Il existe plusieurs indicateurs hydrauliques qui pourraient être interprétés en fonction des réalités sociales. Dans cette étude, en plus de la détermination des indicateurs de distribution et d'adduction d'eau du projet d'irrigation de Behbahan, le statut social a été étudié par rapport à eux. En conséquence, les indicateurs d'adéquation, de fiabilité et d'équité de ce programme sont médiocres. Pendant ce temps, 54% * Les défis de la distribution de l'eau d'irrigation au point de vue des relations socio-hydrauliques