Explanation:

Indus Water Treaty:
The six rivers of the Indus basin originate in Tibet and flow across the Himalayan ranges to end in the Arabian sea south of Karachi. Preceding partition, it was one common network for both India and Pakistan. However, while partition managed to draw terrestrial borders, the question of how to divide the Indus waters was something that needed to be worked out. Since the rivers flowed from India to Pakistan, the latter was unsurprisingly threatened by the prospect of being fed by the former.
In 1960, the two countries reached a decisive step with the intervention of the World Bank wherein precise details were laid out regarding the way in which the waters would be distributed. The components of the treaty were fairly simple.
The three western rivers (Jhelum, Chenab and Indus) were allocated to Pakistan while India was given control over the three eastern rivers (Ravi, Beas and Sutlej).
While India could use the western rivers for consumption purpose, restrictions were placed on building of storage systems. The treaty states that aside of certain specific cases, no storage and irrigation systems can be built by India on the western rivers.