Interlinking of Rivers in India

Syllabus Mapping: GS-I — Salient features of world’s physical geography; distribution of key natural resources.

Secondary: GS-III — Major crops: different types of irrigation and irrigation systems; conservation and environmental impact assessment.

Introduction

India’s National Perspective Plan (NPP) has identified **30 inter-basin links**. However, the **Ken–Betwa Link Project** is the only priority link currently under implementation. The main policy question is not whether a canal can move water. Instead, it asks if a source basin has dependable water. This must be true after meeting its own needs, ensuring **ecological flows**, and managing dry-year risks. Every viable link must pass this hydrological, federal, and social test.

Physical or Locational Characteristics

The plan is organised by river-system geography. Its two components differ in the countries, States, and types of rivers they must connect.

Components of the National Perspective Plan

• Himalayan component: 14 links require coordination with Nepal and affected Indian States

  The Himalayan component includes 14 proposed links. These links are in the Ganga–Brahmaputra system. For example, Kosi–Mechi, Kosi–Ghaghra, and Gandak–Ganga involve basins shared with Nepal. Therefore, storage, flood management, and dry-season transfers require diplomatic arrangements. They also need domestic technical approval. The Ministry of Jal Shakti lists their project status separately. This is because a domestic canal cannot resolve a transboundary water claim. Official project list, 2025.
• Peninsular component: 16 links must reconcile distinct seasonal basins and State claims

  The Peninsular component includes the Mahanadi–Godavari–Krishna–Pennar–Cauvery corridor. It also includes west-flowing rivers and central Indian basins. This is mainly an inter-State exercise. However, it involves different rainfall regimes, existing dams, and competing irrigation claims. Geography is important here. A physical canal may be one project. But its water-sharing rules affect several States and downstream areas.

Ken–Betwa: the geographical case study

• Ken–Betwa location: transfers within the Yamuna system to drought-prone Bundelkhand

  The link transfers water from the Ken system to the Betwa system. This is for Bundelkhand. Bundelkhand is a drought-prone region spanning Madhya Pradesh and Uttar Pradesh. The project’s location makes it a useful Mains case study. It is not a transfer from a Himalayan “surplus” basin to a distant southern basin. Instead, it is a basin-level intervention within the Yamuna system. The official project design includes Daudhan Dam, a link canal, the Lower Orr Project, Kotha Barrage, and the Bina Complex Multipurpose Project. Cabinet approval, 2021.
• Priority projects: Ken–Betwa, Modified PKC and Godavari–Cauvery need different State compacts

  The current priority set includes Ken–Betwa, the Modified Parbati–Kalisindh–Chambal (PKC) project, and three Godavari–Cauvery sub-links. PKC concerns Madhya Pradesh and Rajasthan. The Godavari–Cauvery proposal concerns Telangana, Andhra Pradesh, Tamil Nadu, and Puducherry. This spread shows why a single national formula cannot replace basin-specific hydrology and negotiated benefits. Department of Water Resources status note, 2025.

Planning and Implementation Process

A link should progress only when strong evidence supports each stage. The following stages show the difference between a plan and an approved, working project.

• Implementation pipeline: 30 PFRs, 26 FRs and 13 DPRs by December 2025

  By December 2025, the Government reported Pre-Feasibility Reports (PFRs) for all 30 links. It reported Feasibility Reports (FRs) for 26 links and Detailed Project Reports (DPRs) for 13 links. This gap is significant. A pre-feasibility study only identifies a possibility. It does not prove if a project is affordable, socially acceptable, or has a reliable water source. The National Perspective Plan (NPP) is over four decades old. This current pipeline itself warns against calling the programme a ready national water grid. Department of Water Resources status note, 2025.
• State compacts: must fix water shares, costs, land responsibilities and drought-year rules

  For the Ken–Betwa link, the Union Minister for Jal Shakti, along with the Chief Ministers of Madhya Pradesh and Uttar Pradesh, signed an agreement on March 22, 2021. For the Modified Parbati–Kalisindh–Chambal (PKC) link, the Department of Water Resources notes a Memorandum of Understanding (MoU) for the DPR. It also notes a Memorandum of Agreement (MoA) for implementation. This is between the Union, Madhya Pradesh, and Rajasthan. These agreements must finalize water shares, land and forest responsibilities, cost sharing, beneficiary areas, and drought-year operations. This must happen before construction starts and creates irreversible claims. Ken–Betwa agreement and project approval; PKC status.
• Statutory safeguards: EIA, environmental management and R&R must precede construction

  The Department of Water Resources states that an Environmental Impact Assessment (EIA) is done during the feasibility and DPR preparation for each Inter-Linking of Rivers (ILR) project. For Ken–Betwa, the EIA is complete. Environmental clearance has been granted. The project also has an Environmental Management Plan and an Integrated Landscape Management Plan. Later operating conditions are as important as the initial clearance. The project authority must prove that commitments for habitat, corridor, and rehabilitation are actually fulfilled. Department of Water Resources status note, 2025.

Distribution and Implementation Status

Implementation is concentrated in a few links. The remaining links are at the study, agreement, or appraisal stages. These differences provide clear evidence of the programme’s practical constraints.

Implementation status of major links

• Ken–Betwa status: only priority NPP link under implementation, with a 2030 target

  An official status note from December 2025 identifies Ken–Betwa. It is the only priority NPP project that has started implementation. Its estimated cost is ₹44,605 crore. The central government will provide ₹39,317 crore through the Ken–Betwa Link Project Authority. Completion is scheduled for 2030. Work on the Daudhan Dam has been awarded. Thus, this project is a test case. It sets financial, ecological, and rehabilitation standards for future links. Department of Water Resources status note, 2025.
• Godavari–Cauvery status: draft 4,189 MCM proposal still needs State agreement

  NWDA has prepared a Technical Feasibility Report. It also prepared a draft DPR and a draft MoA. This is for an interim Godavari–Cauvery proposal. This proposal involves transferring about 4,189 MCM of water. The proposal combines three sub-links. These are Godavari–Krishna, Krishna–Pennar, and Pennar–Cauvery. These documents are still in draft form. This highlights the gap between engineering preparation and politically agreed implementation. Department of Water Resources status note, 2025.
• Netravati–Hemavati lesson: Yettinahole removed the donor water once assumed surplus

  The Ministry of Jal Shakti states this. Further studies on the Netravati–Hemavati link stopped. This happened after Karnataka implemented the Yettinahole project. Then, no surplus water remained in the Netravati basin for diversion. This is more than a general warning about uncertainty. A planned link lost its assumed donor water. This occurred because another project changed water availability in the basin. Therefore, every link must use updated data. This includes dry-season flow, existing commitments, and climate-risk data. Official project list, 2025.
• Polavaram–Krishna lesson: connectivity works, but every link needs separate viability proof

  Water connectivity has been established in the Godavari (Polavaram)–Krishna (Vijayawada) link canal. This happened under the Andhra Pradesh-led Polavaram project. This shows that a State-specific water transfer can be physically carried out. However, it does not prove that every NPP link is viable. Each link has unique factors. These include its own source reliability, downstream impacts, inter-State commitments, and social costs. Department of Water Resources status note, 2025.

Economic and Ecological Significance

River linking projects bring benefits. But this happens only if water reaches users. It must not weaken the source river or local water systems. The following points show the direct gains and the ecological limits that control them.

Water Redistribution and Security

• Equitable water distribution: directs assessed water to deficit regions like Bundelkhand

  The National Perspective Plan aims to transfer water. It moves water only from basins with assessed surplus to deficit regions. The Ken–Betwa project uses this idea for Bundelkhand. Bundelkhand is in Madhya Pradesh and Uttar Pradesh. The real benefit is not the canal. It is reliable water for farms, households, and local systems. This water is available after meeting the source basin's needs and protecting ecological flows. The Netravati–Hemavati proposal shows why this assessment must be dynamic. Its assumed surplus disappeared after another project. Ministry of Jal Shakti, 2025.
• Drought resilience: adds to lean-season supply but cannot end drought alone

  A stored water transfer can reduce vulnerability. This happens when local rainfall fails. It also requires a verified donor basin to have water after existing commitments. The Government says Ken–Betwa improves water security and drought resilience in its beneficiary area. But it warns that it cannot completely eliminate drought. Watershed treatment, groundwater recharge, and efficient water use are still vital. This is because drought also comes from failures in local storage, demand, and distribution. PIB, August 2026.
• Agricultural security: 10.62 lakh ha target needs field delivery, efficiency, and crop planning

  The Ken–Betwa project aims to provide annual irrigation to 10.62 lakh hectares. This includes 8.11 lakh hectares in Madhya Pradesh and 2.51 lakh hectares in Uttar Pradesh. This project can reduce rainfall risk for farms. But this happens only if water moves through field channels. Farmers must also use it efficiently. NITI Aayog reported 112.5 million hectares of irrigation potential created. However, only 89.3 million hectares were used in 2012. This shows why command-area development and water-use efficiency are as important as new canal capacity. PIB, 2022; NITI Aayog, Strategy for New India.

Infrastructure and Regional Outcomes

• Drinking-water access: 194 MCM is planned for about 62 lakh people in Bundelkhand

  The official design sets aside 194 million cubic metres of water. This is for en-route drinking water supply. It will serve about 62 lakh people. Of these, 41 lakh are in Madhya Pradesh and 21 lakh in Uttar Pradesh. This makes the link a public-service project. It is also an irrigation project. Its social value will depend on treatment plants, local distribution networks, affordability, and water quality. It does not depend only on the volume released into the canal. Ministry of Jal Shakti, 2022.
• Renewable power: Daudhan infrastructure includes 103 MW hydropower and 27 MW solar power

  The approved Ken–Betwa design includes 103 MW of hydropower and 27 MW of solar power. Power is an extra benefit from water storage and regulated release. But power generation should not cause releases that harm ecological flow. It should also not affect water needed for drinking and irrigation. A good operating rule puts essential water needs and ecological safeguards first. Discretionary power generation comes after these. Cabinet approval, 2021.
• Regional livelihoods: assured water can reduce distress migration only if small farmers benefit

  The Cabinet approved the project. It expects more agricultural activity, employment, and less distress migration from water-stressed Bundelkhand. These good results need several things. They require fair access to the command area. They also need support for small and tenant farmers, crop advice, and markets. Without these, the canal's benefits may only go to landowners near the distribution network. So, employment becomes an outcome to measure. It is not an automatic result of construction. Cabinet approval, 2021.

Ecological Safeguards and Limits

• Flood moderation: storage can reduce a defined flood peak, not control every flood

  A reservoir and canal can reduce a flood. This happens only if storage is available. The recipient basin must also safely receive water. Operators must act before the flood peak. Reservoirs and canals cannot absorb every extreme rainfall event. They also cannot make up for floodplain encroachment or blocked urban drainage. Therefore, floodplain zoning, catchment treatment, and forecast-based reservoir operation must remain part of flood management.
• Ecological flows: seasonal releases sustain wetlands, fisheries, sediment, and downstream recharge

  Diversion changes the amount of water downstream. It also changes the timing of this water. If we only consider annual averages, several things can get damaged. These include dry-season channels, wetlands, fisheries, sediment movement, and groundwater recharge. So, each DPR should identify an ecological-flow reserve. It should also publish normal-year and dry-year releases. This protects river functions. It does not just treat the donor river as a pipeline.
• Landscape protection: Ken–Betwa safeguards must maintain Panna habitats and wildlife corridors

  The Ken–Betwa project has an Integrated Landscape Management Plan. This plan aims to improve habitat quality. It also aims to maintain corridors among protected areas for tigers, vultures, and gharials. The Greater Panna Landscape Council was formed to oversee its implementation. This safeguard is meaningful only if we monitor it. Monitoring includes habitat condition, corridor use, species indicators, and ecological-flow compliance. It is not meaningful just by completing a compensatory plantation. Department of Water Resources status note, 2025.

Associated Issues

The main risks begin before construction. They start with weak source-water assessment. These risks then deepen through ecological loss, fiscal burden, and unequal distribution of costs. The sub-sections follow this sequence.

Hydrological and technical risks

• Seasonal water balance: annual surplus can hide dry-year scarcity and prior commitments

  A river basin may record surplus annual runoff. However, it can still suffer from low lean-season flows. This happens after deducting water for existing irrigation, drinking needs, groundwater stress and ecological needs. Climate patterns make this calculation uncertain. In a drought year, both the donor and recipient basins may face water shortages at the same time. Netravati–Hemavati case: Local projects can use water earlier treated as surplus. Every proposed link must therefore reassess the water available to it. Official project list, 2025.
• Conveyance efficiency: evaporation and seepage reduce water actually delivered to users

  Open reservoirs and canals can lose water. This happens due to evaporation, seepage, and operational leakage. Pumping water also adds an energy cost. The right comparison is not total water diverted. It is the water delivered at the farm outlet or city treatment plant. This is after accounting for losses and maintenance. Project evaluation should compare this delivered-water cost. It should be compared with watershed restoration, aquifer recharge, water reuse, micro-irrigation, and leak reduction.
• Water-quality safeguards: transfers can shift contaminants and alter river ecology

  A reservoir receiving water does not automatically dilute polluted incoming water safely. Water transfers can change the nutrient balance. They can also increase exposure to invasive species. This affects water quality for downstream users. So, basin water quality monitoring and treatment are necessary. These must be considered along with water volume calculations. A canal should not transport pollution between river systems.

Federal, legal and fiscal risks

• Constitutional federalism: Entries 17 and 56 and Article 262 still require negotiated operation

  Entry 17 of the State List covers water. This is subject to Entry 56 of the Union List. Entry 56 deals with regulating and developing inter-State rivers and river valleys for public interest. Article 262 allows Parliament to resolve inter-State water disputes. The Inter-State River Water Disputes Act, 1956, offers one way to do this. These provisions help in coordination and dispute resolution. But they do not remove the political need for States to agree. States must agree on source water, benefit sharing, and drought rules. Inter-State River Water Disputes Act, 1956.
• State consensus: project progress stalls until shares, costs and benefits are agreed

  The Department of Water Resources says building consensus among States is the hardest task. It causes delays in Inter-Linking of Rivers (ILR) projects. Separate MoUs (Memorandums of Understanding) and MoAs (Memorandums of Agreement) are needed for projects like Modified PKC. This proves project planning cannot replace political agreement. A strong agreement is needed before major construction starts. It must define water shares, costs, water release rules, and a dispute resolution system. Department of Water Resources status note, 2025.
• Fiscal trade-off: ₹44,605 crore Ken–Betwa investment must outperform local alternatives

  The Ken–Betwa project has an approved cost of ₹44,605 crore. This is based on 2020–21 prices. The Government spent ₹12,445.85 crore on this project until July 2026. These projects need clear lifecycle cost analysis. This includes land acquisition, rehabilitation, forest protection, canal maintenance, power use, and command-area works. These costs should be compared with the actual water and livelihood benefits delivered. PIB, August 2026.

Environmental and social risks

• Panna landscape impact: 17,101 trees identified for felling, 12,404 inside reserve forest

  The Ministry of Jal Shakti reported data for Daudhan Dam and related Ken–Betwa works. It identified 17,101 trees for felling in Madhya Pradesh. This includes 12,404 trees inside the Panna Tiger Reserve forest. The environmental problem is not just the number of trees. Construction, waterlogging, and new pathways can break up habitats. They can also change the river system. This affects species like tigers and gharials. Therefore, the Integrated Landscape Management Plan needs independent monitoring. It must be checked against specific, measurable results. PIB, July 2025.
• Rehabilitation: 7,193 affected families need homes, livelihoods and commons, not cash alone

  A July 2025 report identified about 7,193 families affected by the Ken–Betwa project. These families were at the Section 11 notification stage. A 2026 reply from the Ministry of Tribal Affairs referred to the Phase-I R&R (Rehabilitation & Resettlement) proposal. It identified 1,913 affected families. Their total population was 8,339. This included 648 Scheduled Tribe families. These numbers come from different project stages and scopes. But together, they show why authorities must do more. They must publish one updated list. They must restore housing, land, common resources, forest access, and livelihoods. Cash compensation alone is not enough. PIB, July 2025; Ministry of Tribal Affairs, August 2026.
• Forest rights: FRA compliance and claim settlement must precede forest-land diversion

  The Ministry of Tribal Affairs says Stage-II approvals for Ken–Betwa require two things. First, the R&R plan must be implemented. Second, the Forest Rights Act, 2006 must be followed. This must happen before forest land is transferred. It also highlights Section 4(5) of the Act. This section states that eligible claimants cannot be removed. This is true until their recognition and verification are complete. This sets a clear, rights-based standard for how the project stages should proceed. Ministry of Tribal Affairs, August 2026.
• Editorial case: Pamba–Achankovil–Vaippar shows local ecology and consent can constrain a link

  The linked WayToIAS editorial summary discusses the Pamba–Achankovil–Vaippar proposal and the Ken–Betwa debate. It shows that consultations must not start after design choices are already final. It also mentions past water transfers. This warns against assuming a historic canal means every new link will have enough water or public acceptance. This example shows how a specific editorial point connects to broader Mains topics. These topics include federal consent, local ecology, and water demand management.

Government Measures / Way Forward

India should not have to choose between a national canal network and no infrastructure. It should approve only those links that outperform local alternatives. These approvals must happen under transparent, basin-scale, and rights-based tests.

Evidence-based project design

• Dynamic basin accounting: Revalidate seasonal donor water before every major approval.

  Use updated seasonal flow records. Include existing and sanctioned withdrawals, groundwater conditions, and climate scenarios. Maintain a non-negotiable ecological-flow reserve. Make the full water balance public. Source and recipient States must review it independently. The Netravati–Hemavati experience shows why a one-time calculation of “surplus” cannot justify a decades-long diversion. Official project list, 2025.
• Cumulative safeguards: Publish ecological-flow, corridor, and habitat outcomes, not only clearances.

  Assess the combined effect of dams, canals, existing projects, and upstream withdrawals. Evaluate their impact on river flows, wetlands, sediment, forests, and wildlife corridors. For Ken–Betwa, the existing Integrated Landscape Management Plan and Greater Panna Landscape Council provide an institutional starting point. Their monitoring should publish corridor condition, species indicators, environmental-flow compliance, and remedial actions. They should not publish only clearance status. Department of Water Resources status note, 2025.
• Least-cost water portfolio: Compare a link with recharge, reuse, efficiency, and local storage.

  The DPR should compare delivered water, cost, and ecological impact against rainwater harvesting, watershed treatment, tank restoration, aquifer recharge, wastewater reuse, canal modernisation, and micro-irrigation. NITI Aayog notes that India had a wide gap between irrigation potential created and utilised in its 2012 reference year. Improving existing systems can often create water security faster than a new transfer. The comparison does not rule out a link project. It ensures that a mega-project is selected only when it is the best public investment. NITI Aayog, Strategy for New India.

Cooperative and accountable river-basin governance

• Operating compact: Enforce drought-year shares, releases, data disclosure, and joint audits.

  Every compact should specify normal-year and drought-year allocations. It should detail reservoir rule curves, ecological releases, benefit and cost sharing, data standards, joint inspection, and a time-bound dispute process. A tribunal can settle a dispute, but it cannot run a reservoir every monsoon. Public dashboards should disclose inflows, releases, command-area delivery, compensation, and compliance. This ensures the agreement remains credible even after a change in government.
• River-basin institutions: Integrate surface water, groundwater, demand, quality, and ecology.

  NITI Aayog recommends integrated river-basin management. It suggests the early establishment of river-basin organisations for major basins and State-level water-regulatory frameworks. These institutions can connect surface water, groundwater, demand, water quality, and ecology within one decision system. They are especially necessary for an ILR project. This is because source and recipient users must trust the same data. NITI Aayog, Strategy for New India.

Rights-first implementation and learning before scale-up

• Rights-first delivery: Verify R&R and FRA obligations before irreversible construction.

  A project authority should maintain a verified public list. This list should include affected families, land and forest-rights claimants, compensation paid, resettlement sites, livelihood restoration, and grievance outcomes. The Ministry of Tribal Affairs has already linked Stage-II approval to R&R implementation and Forest Rights Act compliance in Ken–Betwa. This should become a hard gate for every future link project. It should not be a post-construction safeguard. Ministry of Tribal Affairs, August 2026.
• Learning before scale-up: Use Ken–Betwa outcome data before approving later links.

  Publish annual, independently audited indicators. These include water released, irrigation actually achieved, drinking-water connections, ecological-flow compliance, habitat outcomes, affected-family rehabilitation, and cost escalation. Expand to another link project only when these indicators show that the claimed water-security gain has materialised. This must happen without shifting unacceptable costs to the source basin or displaced communities. This approach makes the first implementation project evidence for later decisions, rather than an assumption behind them.

Data Bank

Answer Framework

Introduction: Use the NPP’s 30 proposed links and Ken–Betwa’s implementation status to frame uneven water availability as a basin-governance challenge.

Body: Explain the two components and implementation stages; assess targeted benefits against hydrological reliability, ecology, federal consent, fiscal viability and rights-based rehabilitation.

Conclusion: Support only transparent, science-based and consent-driven links that outperform local water-management alternatives and protect ecological flows.