33 Spillway Gates of Tungabhadra Dam Inaugurated, ₹51 Cr Upgrade Highlights Inter-State Water Sharing

Bihar, Jharkhand Sign Sone River Water MoU; Marks 4th Inter-State Water Agreement in 2026 under Cooperative Federalism

Bihar and Jharkhand signed an MoU for sharing Sone river water, resolving a long-pending dispute. This is the fourth inter-state water agreement in 2026, highlighting the government's push for cooperative federalism. The agreement will benefit lakhs of farmers in Bihar and Jharkhand districts.

Kishau Multipurpose Project: 422 MW Dam on Tons River Signed by 6 States & Delhi at ₹15,624 Cr

Six states and Delhi signed the Kishau multipurpose project on the Tons river, a 422 MW dam with ₹15,624 Cr cost. It resolves a long-standing water dispute and involves 90% central funding. Key for understanding inter-state water governance, hydropower, and displacement issues.

Mahanadi Water Dispute: Odisha-Chhattisgarh CMs Meet July 30, 2026; Tribunal Gives Final Chance by April 20, 2026

After a decade-long legal battle, the Chief Ministers of Odisha and Chhattisgarh met on July 30, 2026 under Union Jal Shakti Minister C.R. Patil to resolve the Mahanadi water dispute amicably within three months. The Mahanadi Water Disputes Tribunal (MWDT) had earlier given a final opportunity on April 20, 2026 for a consensus, failing which it would proceed with adjudication. This is crucial for understanding inter-state river water disputes, cooperative federalism, and the ISRWD Act, 1956.

11,000 MW Siang Upper Multipurpose Project: Arunachal Cabinet Sets Up High-Level Panel for Survey

Arunachal Cabinet approves Empowered High-Level Committee to guide pre-feasibility survey of the Siang Upper Multipurpose Project (SUMP). This 11,000 MW national project (declared 2008) is strategically crucial to counter China's 60,000 MW dam on Yarlung Tsangpo. Local opposition persists; state assures people-centric survey. Prelims: remember SUMP capacity, national project year, China's project capacity. Mains: analyze strategic water/energy security vs local displacement.

Delhi Master Plan 2047 Tabled at DDA: 5-Year Delay, Yamuna O-Zone Policy & 1,511 Colonies Regularisation

The Delhi Master Plan 2047, delayed by 5 years, is finally tabled at DDA for approval. The plan addresses Yamuna O-Zone regulation, regularisation of 1,511 unauthorised colonies, and new TOD and slum rehabilitation policies. This is critical for understanding urban governance, environmental regulation, and Delhi's development trajectory — a hot topic for UPSC Prelims and Mains.

CWMA Chairperson Proposes River Board for Cauvery; River Boards Act 1956 Still Unused

Cauvery Water Management Authority chairperson proposes creating a river board for the entire Cauvery basin, bypassing state boundaries. The River Boards Act of 1956 has never been implemented, highlighting a key governance gap in inter-state water management. This is crucial for understanding federal water disputes and the need for integrated basin management.

Karnataka Parks & BMLTA Amendments Shield Tunnel Road Project; 5% Park Land Use Allowed

The Karnataka government has passed two controversial bills amending the Parks (Preservation) Act and the BMLTA Act, which critics allege are designed to shield the Chief Minister's pet Tunnel Road project from three pending PILs in court. The amendments allow the state to use 5% of protected park land for public infrastructure and grant retrospective approval to projects initiated between 2022-2026, potentially bypassing legal scrutiny.

Tamil Nadu Moves SC for CWMA Order: 3,500 Cusecs Cauvery Water Release from Karnataka

Tamil Nadu has approached the Supreme Court to enforce a Central Water Management Authority (CWMA) order directing Karnataka to release 3,500 cusecs of Cauvery water for 15 days. This is crucial for the ongoing irrigation season and highlights the persistent inter-state water dispute, with implications for federalism, water management, and judicial intervention.