Two Dryland Rivers, One Canal: The Case for Rethinking Ken-Betwa

The Lift Line

Surplus means the water nobody has asked for. The landscape was never asked.

Why This Editorial Matters for Your Exam

River interlinking is a standing GS1 and GS3 topic, and answers on it are usually a list of pros and cons. This piece gives you something better: a definitional critique. Once you can explain what India’s surplus criterion counts and what it omits, you can answer any question on interlinking, environmental flows or water allocation from the same foundation. It also supplies a full comparative table of global projects and their specific failure modes, which is exactly the evidence a Mains answer is usually missing.

GS Paper 1: Important geophysical phenomena; distribution of key natural resources; changes in critical geographical features. GS Paper 3: Conservation, environmental pollution and degradation; environmental impact assessment; irrigation systems.

Background and Context

The Ken-Betwa Interlinking Project involves the Daudhan dam and a canal of about 231 kilometres to transfer 591 million cubic metres of water from the Ken basin to the Betwa basin. It is India’s first national-level inter-basin river-linking project.

India has linked rivers before, on a smaller scale. The Godavari, or Polavaram, to Krishna, or Vijayawada link; the Telugu Ganga Project; the Kurnool-Cuddapah Canal; and the Periyar-Vaigai Project, the oldest of these and operational since the nineteenth century. The author’s assessment is that these worked in part because the rivers concerned sat in broadly similar geographical conditions and the schemes were comparatively smaller.

Why Ken-Betwa is a different proposition. Both are dryland rivers in a region with highly seasonal rainfall, and they differ from each other in ways set out below. The piece therefore asks that the project be understood not merely as an engineering intervention, but as an ecological and hydrological experiment in a dryland region.

The Analysis

1. The surplus criterion is the heart of the argument. Under Indian engineering practice, a basin is water-surplus if its 75 per cent dependable annual river flow is expected to exceed projected annual water demand up to 2050, and water-deficient if it fails that test. The objection, in the words of Professor Padmini Pani of Jawaharlal Nehru University, is direct: “We cannot say there is a surplus. Surplus means that the natural landscape requires that excess water.” The same concern has arisen over China’s South-to-North Water Transfer Project, the California State Water Project and the Central Arizona Project. A 2009 feasibility study by Malavika Mysore, then a master’s student at Duke University’s Nicholas School of the Environment and Earth Sciences, raised it specifically for Ken-Betwa.

2. The global record, by failure mode. This table is the single most useful thing in the piece for an examination answer.

3. The two rivers are alike in origin and unlike in behaviour. Both flow through the Bundelkhand Craton, one of India’s oldest crustal blocks, and share Archean crystalline rocks, largely granite-gneiss, and Proterozoic Vindhyan sedimentary formations of sandstone, shale and limestone. But the Ken basin has Deccan basaltic intrusions while the Betwa has Bijawar volcano-sedimentary formations; the Ken is more structurally controlled by faults and lineaments, while the Betwa has carved its path more directly through bedrock.

4. The consequences the differences imply. Transferring water from the Ken during its high-flow periods could worsen its dry-season stress, particularly as research indicates the basin’s hydrology is sensitive to climate fluctuation. The project may reduce drought severity in the Betwa basin, but a sudden increase in discharge could alter channel behaviour and river morphology and, during high-flow periods, raise flood susceptibility. At basin scale, the Daudhan dam could alter downstream sediment dynamics in the Ken, while the canal network may cause habitat destruction, land submergence and waterlogging.

5. The ecological findings are published and specific. A 2017 study by Laxmi Goparaju and Firoz Ahmad of the Vindhya Ecology and Natural History Foundation, Mirzapur, with Himanshu Thakkar of the South Asia Network on Dams, Rivers and People, noted that the proposed canal would submerge parts of the Panna Reserve Forest. The same year, K. D. Joshi and colleagues at the Allahabad Regional Centre of the Central Inland Fisheries Research Institute, with A. P. Sharma of ICAR, Barrackpore, reported that the project could alter fish diversity and cause habitat loss in the Ken. Other studies identify land subsidence, localised submergence, inundation and slope instability.

6. The direction of global practice is the closing argument. Many countries are now investing in river restoration, dam removal, barrier removal and environmental flow restoration. The author’s framing is that India is initiating a national-level river-linking project in a dryland region at a moment when the world is stepping back from heavy river manipulation, and closes on T. S. Eliot’s line from The Dry Salvages describing the river as “a strong brown god, sullen, untamed and intractable”.

The precision that earns marks. 75 per cent dependable flow is not average flow. It is the annual flow equalled or exceeded in 75 per cent of years, that is, in three years out of four. It is therefore a conservative figure by design, and defenders of the criterion rely on exactly that conservatism. The critique in this piece does not dispute the statistic; it disputes what is placed on the other side of the comparison, which is projected human demand alone.

Data and Institutions Vault

Prelims-grade facts:

The project:

• The Ken-Betwa Interlinking Project transfers water from the Ken basin to the Betwa basin.
• It involves the Daudhan dam and a canal of about 231 kilometres.
• The transfer is 591 million cubic metres.
• It is India’s first national-level inter-basin river-linking project.
• Both the Ken and the Betwa are tributaries of the Yamuna and drain the Bundelkhand region across Madhya Pradesh and Uttar Pradesh.
• The Ken flows past the Panna Tiger Reserve, which also contains the Ken Gharial Sanctuary.

India’s earlier links:

• Godavari, or Polavaram, to Krishna, or Vijayawada.
• The Telugu Ganga Project.
• The Kurnool-Cuddapah Canal.
• The Periyar-Vaigai Project, the oldest, operational since the nineteenth century.

The criterion and the critique:

• A basin is treated as water-surplus if its 75 per cent dependable annual flow exceeds projected annual demand up to 2050.
• 75 per cent dependable flow is the flow equalled or exceeded in three years out of four.
• Professor Padmini Pani of Jawaharlal Nehru University argues that the natural landscape itself requires the water classed as excess.
• A 2009 Duke University feasibility study by Malavika Mysore raised the same concern for Ken-Betwa.

The physical geography:

• Both rivers flow through the Bundelkhand Craton, among India’s oldest crustal blocks.
• Shared formations: Archean granite-gneiss and Proterozoic Vindhyan sandstone, shale and limestone.
• The Ken basin has Deccan basaltic intrusions; the Betwa has Bijawar volcano-sedimentary formations.
• Ken rainfall is about 800 to 1,250 mm with about 90 per cent in the monsoon.
• Betwa rainfall is about 700 to 1,200 mm with about 80 per cent from the southwest monsoon.

The published ecological findings:

• A 2017 study by Goparaju, Ahmad and Thakkar found the canal would submerge parts of the Panna Reserve Forest.
• A 2017 study by Joshi and colleagues of the Central Inland Fisheries Research Institute and ICAR found the project could alter fish diversity and cause habitat loss in the Ken.

The institutional framework:

• The National Perspective Plan for water resources development was formulated in 1980.
• The National Water Development Agency was set up in 1982 to conduct link studies.
• The Plan envisages 30 links, 16 peninsular and 14 Himalayan.
• Water supply, irrigation and drainage are Entry 17 of the State List.
• Regulation of inter-State rivers is Entry 56 of the Union List, and Article 262 governs inter-State river water disputes.

⚠️ Watch the trap: Interlinking is not the same as a river-basin transfer within one State, nor the same as a canal command extension. Ken-Betwa is an inter-basin transfer, moving water between two separate river basins, which is what raises the surplus-deficit classification question. Within-basin distribution raises no such question and is governed by entirely different considerations.

The Debate

For the project. Bundelkhand’s water distress is recurrent, severe and documented, and the Betwa basin is genuinely deficient. A transfer of 591 million cubic metres from a basin with higher and more reliable monsoon rainfall is a proportionate response. Every intervention has ecological cost, and a standard that permits no alteration of a natural system amounts to accepting the drought.

Against the project. The classification that authorises the transfer counts only human demand, so the ecological claim on the water is invisible to the arithmetic that declares it spare. Global experience across seven major projects shows recurring harms that appeared years after commissioning. And the two rivers are structurally guided by bedrock, so their capacity to absorb a sustained change in discharge is limited.

The reconciliation. The argument is not actually about whether Bundelkhand needs water. It is about what the transfer is being compared against. If the alternative is nothing, the project wins easily. If the alternative is demand-side change, watershed treatment and groundwater recharge assessed on equal terms, the comparison has never been properly made. The strongest form of this answer asks for the comparison rather than for the cancellation.

How to Think About This

Whenever a policy rests on a technical classification, examine the classification rather than the policy. Here the classification is “surplus”, and it is doing enormous work: once a basin is labelled surplus, the transfer becomes a matter of engineering rather than of allocation, and the ecological question never has to be answered because it was never asked. The same analytical move applies to “wasteland” in land acquisition, to “non-forest land” in diversion decisions, and to “dependable yield” in groundwater regulation. Find the definition, and you have found the decision.

Diagram-in-Words

Takeaway Box

• Daudhan dam, 231 km canal, 591 million cubic metres, India’s first national inter-basin link. Four facts, one sentence.
• Surplus counts human demand only. That omission is the whole critique, and it is transferable to wasteland, non-forest land and dependable yield.
• Seven global projects, seven failure modes. China, the Soviet Union, South Africa, Pakistan, Namibia and two in the United States. Cite two and you have evidence.
• Same craton, different rivers. Shared Bundelkhand geology, but Deccan basalt against Bijawar formations, sub-humid against semi-arid, straight against meandering.
• The world is removing barriers while India builds one. State the trend, then decide whether the comparison is fair, because Bundelkhand’s distress is also real.

Sources: Down To Earth

Source: Two Dryland Rivers, One Canal: The Case for Rethinking Ken-Betwa — Ujiyari.com | Free UPSC & State PCS Editorial Analysis