ISSUES WITH RIVER-LINKING PROJECTS: HYDROLINKAGE DYNAMICS, ECOLOGICAL COSTS, AND WATER GOVERNANCE

Why In News?

The Ken-Betwa Link Project (KBLP) and inter-state disputes like Pennaiyar, Mekedatu, and Cauvery have renewed debates on river interlinking.  

What Is River Linking?

River linking, or the Interlinking of Rivers (ILR), is a large-scale civil engineering initiative designed to transfer water from water-surplus river basins to water-deficit or drought-prone areas through a network of canals, reservoirs, and dams.

In India, this is managed via the National Perspective Plan (NPP) formulated in 1980 by the Ministry of Water Resources. 30 Identified River Link Corridors:

• 14 Himalayan Links: Constructing massive storage reservoirs on the Ganga, Brahmaputra, and their principal tributaries (including the Kosi, Gandak, and Ghaghara) to divert monsoon runoffs westward toward the arid plains of Rajasthan, Haryana, and Gujarat.

• 16 Peninsular Links: Divided into four distinct sub-groups—interlinking of Mahanadi-Godavari-Krishna-Pennar-Cauvery-Vaigai; interlinking of west-flowing rivers north of Mumbai and south of Tapi; interlinking of Ken-Betwa and Parbati-Kalisindh-Chambal; and diversion of west-flowing rivers of Kerala toward east.

Priority Status of the Ken-Betwa Link: Formally approved under the NPP to transfer water from the Ken basin in Madhya Pradesh to the Betwa basin in Uttar Pradesh.

Can River Linking Solve India’s Water Crisis?

Supply-Side Blindness: India’s water crisis is predominantly a structural demand-management and governance breakdown rather than a natural supply deficit.

Depletion of Groundwater Reserves: Unrestricted extraction of groundwater—spurred by unmetered or free agricultural electricity subsidies—has depleted aquifers across the Indo-Gangetic plains and Deccan trap.

Inefficient Flood Irrigation: Agriculture consumes over 80% to 85% of India's developed freshwater, with canal water conveyance and surface flooding exhibiting dismal water-use efficiency (30%–35%).

Distorted Cropping Patterns: Subsidized procurement (MSP) and cheap power have incentivized water-guzzling crops (paddy, sugarcane, cotton) in semi-arid zones like Punjab, Haryana, and western Maharashtra.

Severe River Pollution: Untreated industrial effluents and municipal sewage discharge have rendered downstream river stretches biologically dead, creating water scarcity amid physical abundance.

What Are The Sustainable Alternatives?

Decentralized Rainwater Harvesting: Capturing monsoon precipitation in situ through check dams, farm ponds, percolation pits, and village tanks dramatically revitalizes shallow unconfined aquifers.

Community-Led Watershed Development: Terracing, contour bunding, and afforestation in upper catchments stabilize local hydrology and retain topsoil moisture without requiring massive population displacement.

Pressurized Micro-Irrigation (PMI): Scaling up drip and sprinkler systems under the Pradhan Mantri Krishi Sinchayee Yojana (PMKSY - Per Drop More Crop) enhances on-farm water use efficiency up to 80%–90%.

Strategic Crop Diversification: Replacing water-intensive monocultures with climate-resilient Millets (Shree Anna), pulses, and oilseeds significantly reduces agricultural water footprints.

Urban Wastewater Recycling and Reuse: Treating municipal sewage to secondary and tertiary standards for industrial cooling, urban landscaping, and dual-piping systems relieves stress on freshwater rivers.

Wetland Restoration and Floodplain Zoning: Demarcating and legally protecting natural river floodplains and urban water bodies cushions against urban floods while facilitating natural groundwater recharge.

Way Forward

Transition to Integrated River Basin Management (IRBM): Treat entire river basins as unified, indivisible ecological units, replacing piecemeal hydraulic diversions with holistic hydrological planning.

• Example: National Water Policy Recommendations, advocating for statutory River Basin Organizations (RBOs) with inter-disciplinary representation.

Operationalize River Basin Authorities: Reinvigorate the dormant River Boards Act, 1956 to establish permanent, representative interstate river valley boards endowed with participatory decision-making powers.

• Example: Mihir Shah Committee Report (2016), recommending the unified restructuring of the Central Water Commission (CWC) and Central Ground Water Board (CGWB) into a National Water Commission (NWC).

Mandate Environmental Flow (E-Flow) Standards: Statutorily enforce minimum continuous environmental flow baselines across all seasons to sustain aquatic biodiversity, sediment flushing, and downstream riparian rights.

• Example: National Mission for Clean Ganga (NMCG) E-Flow Notification (2018), fixing seasonal minimum flow mandates for river Ganga at various barrage diversion points.

Institutionalize Environmental Impact Assessments (CEIA): Conduct regional, cumulative socio-ecological impact appraisals rather than isolated, project-by-project environmental clearances.

• Example: Expert Appraisal Committee (EAC) Best Practices, evaluating downstream river health, estuarine fisheries, and forest connectivity across entire ecological landscapes.

Empower Gram Sabhas: Guarantee full adherence to the Right to Fair Compensation and Transparency in Land Acquisition, Rehabilitation and Resettlement Act (RFCTLARR), 2013, ensuring land-for-land restoration and binding tribal consent under PESA.

• Example: Forest Rights Act (FRA) 2006 Compliance Framework, ensuring that community forest rights are settled before executing project works.

Conclusion

India’s long-term water security requires decentralized conservation, river ecosystem restoration, and disciplined demand-side management rather than disruptive, large-scale river diversions.

Source: THEHINDU