- The Supreme Court directed the Himachal Pradesh government to release 137 cusecs of water it has in surplus and asked Haryana to do the needful, to resolve the drinking water crisis in Delhi.
- Delhi gets most of its water from the Yamuna, Ravi-Beas, and Ganga rivers. From the Ganga, via the Upper Ganga Canal in UP.
- Two channels entering Delhi from Haryana — the Carrier Lined Channel (CLC) and the Delhi Sub Branch (DSB) — supply Delhi with water from the Yamuna and Ravi-Beas rivers.
- A water-sharing agreement on the ‘surface flow’ of the Yamuna among Haryana, Uttar Pradesh, Rajasthan, Himachal Pradesh and Delhi in 1994, specified that Delhi is to get 0.076 billion cubic metres of water from March to June.
- This allocation is regulated by the Upper Yamuna River Board, with the 1994 agreement due for revision in 2025.
- In 1996, the Supreme Court held that the Wazirabad and Hyderpur reservoirs shall remain full to their capacity from the water supplied by Haryana through river Jamuna to fulfil the demands of Delhi.
Dig Deeper: Read about the Composite Water Management Index of NITI Aayog.
