The Teesta Barrage Project that had been conceived way back in 1975-76 had a grand plan for revival of the agricultural economy of six North Bengal districts - Cooch Behar, Jalpaiguri, Darjeeling, North Dinajpur, South Dinajpur and Malda - which did not have any industrial base. More than 35 years down the line, it remains far from complete, even though the needs may have changed and there is little chance that that the entire project, as originally conceived, would ever be executed. Though the original plan was to construct the project in three different phases and divide the first phase into three different stages.Of these three stages, the first one was divided into two sub-stages. But, after more than three decades, construction is still going on for the first sub-stage of stage I. At the completion of the entire project, the original plan was to bring under irrigation 922,000 hectares and at the completion of the first sub-stage of Stage-I, 342,000 hectares was supposed to get irrigation water. This paper is attempted to study the socio-economic impact of Teesta Barrage Project.