What is the Kalasa-Banduri Nala Project?

About Kalasa Banduri Nala Project:

• The Kalasa Banduri Nala project aims to divert water from Mahadayi to satisfy the drinking water needs of Belagavi, Dharwad, Bagalkot and Gadag districts.
• Though the project was first proposed in the early 1980s, it has remained on paper owing to a dispute between Karnataka, Goa and Maharashtra.
• As per plans, barrages are to be built against Kalasa and Banduri streams — tributaries of Mahadayi — and water diverted towards Karnataka’s parched districts.
• Mahadayi originates inside the Bhimgad Wildlife Sanctuary in the Belagavi district of Karnataka and flows into the Arabian Sea in Goa.

What did the Tribunal say?

• A Tribunal was set up by the UPA government in November 2010.
• The Tribunal in 2018 awarded 13.42 TMC water from Mahadayi river basin to Karnataka, 1.33 TMC to Maharashtra and 24 TMC to Goa.
• In Karnataka’s share, 5.5 TMC was to meet drinking water needs and 8.02 TMC was for hydro-electricity generation.
• Of the 5.5 TMC, 3.8 TMC was to be diverted to Malaprabha basin through Kalasa and Banduri Nalas (canals).
• This was notified by the Central government in February 2020.

Q1) Under which act inter-state water Tribunals are formed?

The inter-state water dispute act 1956 empowers the central government to set up an ad hoc tribunal for the adjudication of a dispute between the two or more states in relation to the water of an inter-state river.

Source: Mahadayi water sharing row between Goa, Karnataka: What is the issue, why it has flared up