There is no denying the fact that all international rivers like the Nile, the Rhyne, the Mekong the Ganges and the like are the heritage of mankind. But the Ganges which flows through upper riparian Nepal, India and lower ripparian Bangladesh, has its peculiarity that its monsoon flow (June-November) is sufficient to meet the needs of India and Bangladesh, but its dry season flow (January-May) is insufficient Recently India and Bangladesh have undertaken their own development plans for which the countries need to share the amount of available dry season flow. This has obviously resulted in a conflict of national interest. And the dispute has been aggravated due to construction of a structure called Farakka Barrage to divert the Ganges dry sea-son flow into the Bhagirthi-Hoogly river to improve the navigability of the Calcutta Port of West Bengal, India. The Ganges dispute had its genesis in the partition of India in 1947. The division split the river system both in the western and eastern sectors. As the two independent states (India and Pakistan) began to formulate their own plans for the development of waters of the rivers lying within their territories, dispute over these water surfaced both east and west. The entire period of negotiations over the Ganges water may be divided into six phases viz. (a) 1951 to 1971 i.e. the Pakistan phase. (b) 1972 to 75 i.e. early Bangladesh phase (c) 1975-1981 (d) 1982 to 1988 (e) 1988 to 1995 and (f) 1995 to 1996 i.e., the final phase of 30 years agreement. The Pakistan phase was marked by a feeling of hostility and distrust. Early Bangladesh phase had discussion on equitable allocation of Ganges water before commissioning of the Farakka Barrage. The phase 1975 to 81 is the break through in the form of 5 year Agreement in government level on April 18, 1977. Phase 1982 to 1988 was the extension of 5 year Agreement through a temporary Memorandum of Understanding (MOU). Phase 1988 to 1995 was the period without any agreement. Finally a 30 year water agreement was signed on December 12, 1996 between the two governments. It is ex-pected that Bangladesh will receive its due share of water as per the terms of reference of this new 30 year agreement. This new 30-year agreement is mainly based on the availability of the Ganges water at Farakka point. Since the average water flow at Farakka depends on natural factors as well as the withdrawal of water in Uttar Pradesh and Bihar states of India. so there is always a chance phenomenon that Bangladesh may not get its due share if less flow reaches at Farakka point as there is no guarantee clause for assured water quantum in this new 30-year Agreement.