What is the Interlinking of Rivers?

The Interlinking of Rivers (ILR) is an ambitious Indian infrastructure project aimed at transferring water from surplus river basins to deficit ones through a network of canals, reservoirs, and dams. The concept is managed by the National Water Development Agency (NWDA) under the Ministry of Jal Shakti. The National Perspective Plan (NPP), formulated in 1980, envisages 30 river link proposals -- 14 under the Himalayan component and 16 under the Peninsular component -- to address the twin challenges of floods in some regions and droughts in others.

The idea traces back to British-era engineer Sir Arthur Cotton (19th century), but the modern plan was proposed by the Ministry of Irrigation in 1980. In 2002, a Supreme Court order directed the government to pursue the project seriously. The Ken-Betwa Link Project (KBLP) became the first interlinking project to be approved (December 2021) and is currently under implementation, connecting the Ken River (surplus, Madhya Pradesh) to the Betwa River (deficit, Uttar Pradesh/Madhya Pradesh).

The project is highly controversial, with proponents arguing it can irrigate 35 million hectares, generate 34,000 MW of hydropower, and mitigate floods and droughts. Critics raise concerns about massive ecological disruption, displacement of communities, inter-state disputes, and questionable assumptions about surplus and deficit basins. Environmental concerns include impact on riparian ecosystems, wetlands, fisheries, and downstream flows.

Key Features

# Feature Details
1 Nodal Agency National Water Development Agency (NWDA), Ministry of Jal Shakti
2 National Perspective Plan 30 links: 14 Himalayan + 16 Peninsular
3 First Project Ken-Betwa Link Project (KBLP), approved December 2021
4 KBLP Cost Rs 44,605 crore (2020-21 prices); central support Rs 39,317 crore
5 KBLP Completion Target March 2030
6 DPRs Completed 11 out of 30 link proposals
7 Irrigation Potential ~35 million hectares (if fully implemented)
8 Hydropower Potential ~34,000 MW

Current Status / Latest Data

  • Ken-Betwa Link Project: Prime Minister Modi laid the foundation stone of Daudhan Dam on December 25, 2024. Total expenditure till date: Rs 7,998.42 crore. Project includes Phase I (Daudhan Dam complex, tunnels, link canal) and Phase II (Lower Orr Dam, Bina Complex, Kotha Barrage).
  • Out of 30 link proposals: all 30 have pre-feasibility reports, 26 have feasibility reports, and 11 have Detailed Project Reports (DPRs).
  • Other links under active consideration include the Par-Tapi-Narmada Link (Gujarat), Godavari-Kaveri Link (Peninsular), and Kosi-Mechi Link (Himalayan).
  • The project faces significant inter-state political resistance -- states like Kerala, Andhra Pradesh, and Karnataka have opposed water transfers from rivers within their territory.
  • Environmental clearance for KBLP required submergence of 9,000 hectares of Panna Tiger Reserve -- a major conservation concern.

UPSC Exam Corner

Prelims: Key Facts

  • ILR envisages 30 links: 14 Himalayan + 16 Peninsular
  • First project: Ken-Betwa Link (approved 2021, cost Rs 44,605 crore)
  • Nodal agency: NWDA under Ministry of Jal Shakti
  • Daudhan Dam foundation stone: December 25, 2024
  • 11 DPRs completed out of 30 proposals
  • Ken-Betwa target completion: March 2030

Mains: Probable Themes

  1. Flood-drought dichotomy: Can interlinking solve India's water distribution crisis?
  2. Environmental impact -- submergence of forests (Panna Tiger Reserve), disruption of river ecosystems, and downstream flow reduction
  3. Inter-state water disputes and constitutional provisions (Entry 17, State List; Article 262)
  4. Economic viability: cost-benefit analysis of mega infrastructure vs. decentralized watershed management
  5. Climate change implications -- changing rainfall patterns may alter the very assumptions of surplus and deficit basins

Sources: Wikipedia - Indian Rivers Interlinking Project, PIB - Inter-Linking of Rivers, Swarajya - Ken-Betwa Progress