in the two river systems was assessed at , which was planned to be developed by the four states of J&K, PEPSU, Punjab and Rajasthan. However, with the merger of PEPSU with Punjab and subsequent bifurcation of Punjab into two states, a dispute arose on the allocation of Ravi and Beas waters for which a tribunal was set up under the Interstate River Water Disputes Act. As a counterclaim to the exclusive claims of Punjab, Haryana claims that a small part of Haryana state lying north in Panchkula district is part of the Sutlej river basin area in addition to Punjab and Himachal Pradesh in India. Thus Haryana claims to be a riparian state of the Indus river basin. Following the reorganisation of the state of Punjab in 1966, Haryana State was created. This was followed by a notification by the Government of India dated 24 March 1976 allocating the surplus waters between Punjab and Haryana in due consideration of the powers conferred by Sub Section (I) of Section 78 of the Punjab Reorganization Act, 1966 (31 of 1966). The allocation was challenged in the Supreme Court by Haryana. A tripartite agreement followed on 31 December 1981, based on the revised mean annual flows from the flow series of 1921–60 assessed as —including preparation use of and transit losses in the Madhopur Beas Link of —vis-a-vis the figure of assessed in earlier allocation, which was based on the flow series of 1921–45. The revised assessed surplus supplies of (from flow and storage) was allocated as: However, the legality of this agreement was challenged by Punjab. This was followed by the Punjab accord signed by the then Prime Minister of India Rajiv Gandhi and Sant Harchand Singh Longowal, President of the Shiromani Akali Dal, on 24 July 1985. This accord stipulated that Following the above accord, Ravi & Beas Waters Tribunal (RBWT) came to be set up in April 1986, in pursuance of paragraphs 9.1 & 9.2 of Punjab Settlement (Rajiv-Longowal Accord, 1985) inter-alia to adjudicate the claims of Punjab and Haryana in Ravi-Beas waters. The Terms of Reference were set and also the time for submission of the report. The Tribunal submitted its report on 30 January 1987. However, the report was contested as Rajasthan also moved an application "seeking explanation and guidance regarding the report of this Ravi Beas waters Tribunal, 1987". The Tribunal is further examining the matter.