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Chapter 3: The River That Divides

Cross-domain lens: Game theory — the upstream-downstream prisoner’s dilemma

On March 28, 2026, the Mahanadi Water Disputes Tribunal issued what amounted to a confession of failure. In legal language stripped of urgency, the tribunal noted that Joint Technical Committees had failed to submit status reports, that the Advocate General of Odisha’s Status Note showed “no substance or concrete progress,” and that the next hearing would be April 11 — two days before the tribunal’s tenure expired on April 13. Eight years. Thirty-two hearings. Site visits to both states. And no resolution. Not even an interim report.

The Cauvery dispute between Karnataka and Tamil Nadu took seventeen years from tribunal constitution to final Supreme Court verdict. The Krishna dispute, constituted in 2004, has still not been resolved after twenty-two years. The Mahanadi tribunal, at eight years, is in its infancy by Indian standards.

This should alarm anyone who depends on the Mahanadi for anything — which is to say, roughly half of Odisha’s population.

The Geography of Dependence

In game theory, the structure of a game determines its outcome more reliably than the players’ intentions. The Mahanadi’s geography creates a game whose structure virtually guarantees conflict.

The river rises in the Sihawa hills near Pharsiya village in Dhamtari district of Chhattisgarh, at an elevation of 442 metres. It flows 851 kilometres before emptying into the Bay of Bengal through a vast delta near Paradeep. The total catchment area covers 1,41,600 square kilometres, of which approximately 54 percent lies in Chhattisgarh and 46 percent in Odisha.

This is the fundamental asymmetry. Chhattisgarh holds the headwaters and the upper catchment. Odisha holds the lower basin and the delta. But the delta is where the river’s benefits are concentrated — irrigation for millions of hectares, flood control for the state’s most populated districts, hydropower generation at Hirakud, and drinking water for Bhubaneswar and Cuttack combined. Chhattisgarh controls where the water comes from. Odisha depends on where the water goes.

In game theory, this is a classic asymmetric game. One player (the upstream state) moves first, and its move constrains all subsequent options for the second player. The upstream player does not need to be malicious — it merely needs to optimize for its own interests without considering the downstream consequences. The downstream player, by contrast, must react to decisions it did not make, cannot reverse, and cannot directly influence.

The Mahanadi is not Odisha’s only river defined by this asymmetry. The Brahmani (799 kilometres, 39,116 square kilometres of catchment) is formed by rivers originating in Jharkhand. The Subarnarekha (395 kilometres) is overwhelmingly a Jharkhand river — only 2,983 of its 19,277 square kilometre catchment lies in Odisha, yet its floods regularly devastate Balasore district. Even the Vamsadhara creates water-sharing complications with Andhra Pradesh.

The Rushikulya, at 165 kilometres entirely within Odisha, is one of the few rivers where the state has full governance authority. This is the exception that proves the rule: Odisha’s water fate is substantially determined by decisions made in other states.

The Six Barrages

The Mahanadi dispute became political dynamite in July 2016, when Odisha formally accused Chhattisgarh of constructing six barrages on the upper Mahanadi and its tributaries without consultation or consent. The structures on the Arpa, Kelo, Bhaisajhar, and other tributaries were diverting water for industrial use — particularly the thermal power plants and mining operations that define Chhattisgarh’s coal economy.

Odisha’s charges were specific: the six barrages were built without any inter-state consultation, violating established norms for inter-state rivers. Non-monsoon flow reduction was estimated at 1,074 million cubic metres in a normal year. The barrages arrested base flow, threatening Hirakud’s ability to store water for irrigation, power, and flood control. And Chhattisgarh’s water consumption was accelerating — at least 150 industrial water abstraction points had been documented in the upper basin.

Chhattisgarh’s counter-arguments were equally predictable. The river originates in Chhattisgarh, and the state has a right to utilize its own resources. Much of the water flows unused into the sea during monsoon. Chhattisgarh’s own agricultural and drinking water needs are growing. And — crucially — there is no formal water-sharing agreement between the two states that Chhattisgarh was violating.

This is where the game theory lens becomes precise. In a prisoner’s dilemma, two players each have two choices: cooperate or defect. If both cooperate — in this case, sharing water equitably — both benefit. If one defects while the other cooperates — building barrages while the other state assumes fair flow — the defector gains and the cooperator is harmed. If both defect — both building as many structures as possible — both end up worse off than if they had cooperated.

The critical feature of the prisoner’s dilemma is that defection is individually rational even when mutual cooperation would produce a better outcome for both. Chhattisgarh building barrages is individually rational: it captures water for its growing industries, generates revenue, creates employment, and strengthens its infrastructure. That this imposes costs on Odisha is an externality — someone else’s problem.

But the game is not played once. This is an iterated prisoner’s dilemma — the same players interact repeatedly, year after year, monsoon after monsoon. In iterated games, cooperation can emerge through mechanisms like reciprocity, reputation, and credible enforcement. The problem is that India’s federal water governance provides none of these mechanisms effectively.

The Tribunal That Cannot Decide

The Mahanadi Water Disputes Tribunal was constituted on March 12, 2018, under the Inter-State River Water Disputes Act, 1956. The Act was designed for an era of lower water demand and fewer upstream interventions. It assumes that disputes can be resolved by allocating a fixed quantum of water to each state. But the reality is more complex: climate change is making total flows less predictable, industrial and urban demand is growing in upstream states, and environmental flow requirements — the minimum water a river needs to sustain its ecology — are not factored into most allocation frameworks.

The Constitution places water in the State List (Entry 17) but inter-state rivers in the Union List (Entry 56), creating a permanent jurisdictional tension that has never been cleanly resolved. Every inter-state water dispute in India exists within this constitutional ambiguity — states have the right to manage water within their borders, but inter-state rivers do not respect borders.

Since the 2024 elections, the BJP governs both Odisha and Chhattisgarh. This has raised expectations of a bilateral resolution — if the same party controls both states, surely they can negotiate. But the game theory logic suggests a different risk. When both riparian states share a ruling party, there is an incentive to declare “resolution” that prioritizes political optics over hydrological fairness. The downstream state may be pressured to accept terms it would reject from an adversary simply because the party demands unity. The Odisha opposition has already accused the current government of “failing to safeguard Odisha’s interests” before the tribunal.

The deeper problem is that the tribunal framework itself is inadequate. India’s inter-state water disputes share common features: they take decades to adjudicate (Cauvery: 28 years from tribunal to Supreme Court finality; Krishna: still unresolved after 55 years). Tribunal rulings are difficult to enforce. Political dynamics repeatedly override legal frameworks. And climate change is shrinking the pie that states are fighting over.

In game theory, the iterated prisoner’s dilemma produces cooperation only when three conditions are met. First, both players must expect the game to continue indefinitely — there must be a “shadow of the future” making defection costly. Second, both players must be able to observe the other’s behavior — transparency is essential. Third, credible enforcement must exist to punish defection.

India’s inter-state water governance fails on all three counts. Players know the game will continue — but they also know that enforcement is so weak that defection carries minimal immediate cost. Transparency is limited — upstream water extraction is difficult for the downstream state to monitor in real time. And enforcement, even when tribunals rule, depends on political will that rarely materializes. The Cauvery tribunal ruled, the Supreme Court affirmed, and Karnataka still resists compliance when politically convenient.

The Mahanadi dispute is the prisoner’s dilemma without the conditions that make cooperation rational.

The Coal-Water Nexus

There is a dimension to the Mahanadi dispute that rarely surfaces in political commentary: Chhattisgarh’s water consumption is not primarily agricultural. It is industrial, and specifically coal-industrial.

The Heinrich Boll Foundation’s 2018 report, “Mahanadi: Coal Rich, Water Stressed,” documented the connection that the political discourse obscures. The Mahanadi basin in Chhattisgarh hosts some of India’s largest coalfields and thermal power plants. These operations require enormous quantities of water — for coal washing, cooling, ash disposal, and dust suppression. At least 150 industrial water abstraction points were documented in the upper basin.

This connects the Mahanadi dispute to the extraction equilibrium identified in The Long Arc Chapter 5. The pattern is consistent: Odisha’s resources — whether mineral, human, or hydrological — generate value that is captured elsewhere. In the Mahanadi case, Chhattisgarh’s coal industry extracts water from a shared river to produce electricity that powers national growth, while the downstream costs — reduced irrigation, compromised flood control, threatened drinking water for Bhubaneswar and Cuttack — fall entirely on Odisha.

The coal-water nexus also means that the Mahanadi dispute’s trajectory is partly determined by India’s energy future. If India’s coal consumption peaks by 2030-2035 — as economics, if not policy, increasingly suggests — Chhattisgarh’s industrial water demand from the Mahanadi will stabilize or decline. But if MCL’s target of 358 million tonnes by FY35 materializes, with parallel thermal power expansion, upstream water extraction will intensify precisely when climate change is making downstream flows less reliable.

Hirakud: The Impossible Balance

If the Mahanadi dispute is a prisoner’s dilemma between states, Hirakud Dam is a prisoner’s dilemma between objectives — a single institution trapped between mandates that cannot simultaneously be fulfilled.

Completed in 1957, Hirakud was one of independent India’s earliest multipurpose river valley projects. At approximately 25.8 kilometres including dykes and embankments, it is the world’s longest earthen dam. The reservoir, when full, creates one of India’s largest artificial lakes — 743 square kilometres of water surface, a shoreline exceeding 639 kilometres.

The dam was conceived after devastating floods in the Mahanadi delta in the 1930s and 1940s. But it was designed with a triple mandate: flood control, irrigation, and hydropower. These three purposes frequently conflict.

For flood control, the reservoir must be kept partially empty during monsoon to absorb flood surges. The more empty the reservoir, the more flood cushion it provides.

For irrigation, the reservoir must be as full as possible at the end of monsoon to provide water through the dry season. Every unit of water released for flood control during monsoon is water unavailable for irrigation later. The command area is vast: approximately 1,55,635 hectares of Kharif irrigation, 1,08,385 hectares of Rabi, plus 4,36,000 hectares in the Mahanadi delta irrigated by water released through the powerhouse. Total: roughly 7 lakh hectares.

For hydropower, generation depends on maintaining sufficient “head” — the water level difference between reservoir and turbine. Lower reservoir levels reduce power output. The installed capacity of 307.5 megawatts requires consistent water levels that conflict with both flood release and irrigation draw-down.

And then there is the mandate that was not in the original design: industry. In recent decades, water from the Hirakud system has been increasingly allocated to thermal power plants, aluminium smelters, and paper mills in the Sambalpur-Jharsuguda-Bargarh industrial belt. This creates a fourth competing demand — one that adds revenue for the state but reduces water available for the other three functions.

The conflict is not theoretical. When Hirakud releases water to manage flood surges, the delta downstream floods — the very outcome the dam was built to prevent. When Hirakud holds water to preserve irrigation storage and a sudden rainfall event occurs, the dam must make emergency releases that cause even worse downstream flooding. When water is diverted to industry, farmers at the tail-end of the canal system receive less than their allocation.

This is a multi-player game with zero-sum characteristics. Every litre allocated to one use is denied to another. And the game gets harder every year.

The Shrinking Reservoir

Hirakud’s capacity is diminishing. The dam was designed with assumptions about sedimentation rates that have proven too optimistic.

The numbers are stark. The original gross storage capacity was 8.136 billion cubic metres. Approximately 27 percent of that capacity has been lost to silt accumulation. Nearly 50 percent of the dead storage area is filled with sediment. Live storage — the water actually available for use — has been reduced by an estimated 20-25 percent.

Sedimentation has exceeded design assumptions. The reservoir is ageing faster than planned.

This is not merely an engineering problem — it directly worsens the impossible balance. A smaller reservoir has less flood cushion, less irrigation storage, and lower hydropower potential. Every year of sedimentation makes every trade-off harder.

In investing terms, this is a depreciating asset with increasing demand. The dam’s effective capacity declines annually while the demands placed upon it — irrigation, flood control, hydropower, industrial supply — grow. The asset’s real value is being consumed by natural processes that no operational decision can reverse. You cannot un-silt a reservoir any more than you can un-mine a mountain.

Climate change compounds the depreciation. More intense rainfall events mean larger flood surges that the reservoir must absorb — but with reduced capacity. More erratic monsoon onset and retreat make the rule curve (the planned seasonal schedule of filling and emptying) harder to follow. Projected rainfall increases under warming scenarios suggest higher peak flows in September and October, extending beyond the traditional monsoon window.

The combination of a shrinking reservoir and growing flood peaks is a slow-motion crisis. The dam that was built to tame the Mahanadi is losing its ability to do so.

The Human Cost of the Dam

The crisis of Hirakud’s operations obscures a prior crisis: the dam’s construction itself.

Hirakud’s reservoir submerged 249 villages and displaced an estimated 1,50,000 people. Compensation was notoriously inadequate — by various accounts, only 35 percent of displaced families received what they were promised. The submergence zone included some of the most fertile rice-growing land in the Sambalpur-Bargarh region, and displaced communities were disproportionately from farming and tribal backgrounds.

The displacement pattern is the one SeeUtkal has documented across every series that touches western Odisha. National-scale infrastructure built on local-scale sacrifice, with benefits accruing to the delta — flood control, irrigation — while costs were borne by western Odisha. The Long Arc Chapter 3 identified this as the “cathedral in the village” dynamic. Hirakud is its prototype.

The political resentment is not historical curiosity. It is a living force in western Odisha’s relationship with the coastal establishment. Sixty-nine years after completion, the displaced communities have never been fully rehabilitated. The dam protects Cuttack and the delta from floods. The dam displaced Sambalpur and the highlands for the same purpose. The asymmetry — who benefits, who pays — maps onto Odisha’s east-west divide with uncomfortable precision.

The East-West Water Paradox

The paradox is precise: Odisha simultaneously suffers from too much water and too little.

In the eastern delta — Cuttack, Jagatsinghpur, Kendrapara, Jajpur, Bhadrak — the convergence of the Mahanadi, Brahmani, and Baitarani in a narrow, low-lying coastal plain produces catastrophic flooding almost every year. The flood-prone area is approximately 3.2 million hectares — 24 percent of the state’s total geographical area. About 12.6 million people are affected by extreme flood events annually.

In the western interior — Bolangir, Bargarh, Nuapada, Kalahandi — chronic rainfall deficit, groundwater depletion, and rain-fed agriculture create conditions of permanent water scarcity. The Central Ground Water Board reports that 24 of 30 districts are experiencing groundwater depletion. The state’s total groundwater volume dropped from 16.69 billion cubic metres in 2009 to 15.57 billion cubic metres in 2017 — a loss of 6.71 percent in just eight years.

The paradox is not coincidence. The two crises are symptoms of the same broken hydrological cycle.

In western Odisha, hard rock geology limits groundwater storage. Deforestation in the Eastern Ghats catchments has reduced natural infiltration — more rainfall runs off as surface flow rather than percolating into aquifers. Traditional water harvesting structures — the bandha, pokhari, and sarovara that communities maintained for centuries — have silted up or been encroached upon. And the introduction of diesel and electric pumps has enabled extraction rates that far exceed natural recharge.

The result: western Odisha experiences both surface flooding during monsoon (because rainfall intensity overwhelms degraded catchments) and groundwater drought during the dry season (because infiltration and recharge are inadequate). The two crises are not opposites. They are connected.

In the delta, the problem is different but equally structural. Embankments — the primary flood defence — are chronically under-maintained and frequently breach. Floodplain encroachment reduces the capacity for rivers to spread during high flows. Siltation of drainage channels prevents floodwater from receding. And emergency releases from Hirakud, when the dam fills beyond capacity, can exacerbate downstream flooding — turning a natural disaster into a partly engineered one.

The political economy of the delta’s flooding is revealing. Embankment construction and repair is a major source of public works spending. The annual cycle of breach-repair-breach creates a permanent revenue stream for contractors and a patronage mechanism for local politicians. There is limited political appetite for structural solutions — restoring floodplains, relocating communities, enforcing flood-plain zoning — that would eliminate the need for recurring embankment contracts.

In game theory, this is a perverse equilibrium. All players are acting rationally given their incentive structures, yet the collective outcome is worse than the cooperative solution. Contractors benefit from breach-repair cycles. Politicians benefit from the patronage these contracts enable. Farmers cannot relocate because they have no alternative land. And no single actor has the incentive to break the cycle.

The Irrigation Gap

Despite six decades of dam-building and canal construction, Odisha’s agriculture remains overwhelmingly rain-dependent. The numbers are damning.

Odisha has 61.65 lakh hectares of cultivated land. An assessed 49.90 lakh hectares can theoretically be brought under irrigation. But only approximately 35-40 percent of cultivated area is currently irrigated. Punjab, by comparison, irrigates 98 percent. The national average is approaching 55 percent. Odisha is not just behind — it is a different category.

The irrigation gap is not merely an infrastructure failure. It is the mechanism through which climate vulnerability translates into human suffering. Punjab can absorb temperature increases because irrigation provides a buffer. When the monsoon is late, Punjab’s canals and tubewells compensate. Western Odisha has no such buffer. When heat intensifies and rainfall declines simultaneously, there is no backstop. Crops fail. Income vanishes. Migration follows.

Even where canal systems function, distribution is deeply unequal. Farmers at the head-reach — near the dam or main channel — receive water first and in greater quantity. Tail-end farmers receive whatever remains, which in dry years may be nothing. This is not merely a technical problem of canal engineering. It is a governance problem: head-reach farmers often over-irrigate, water theft through illegal pump installations is common, and rotational supply scheduling is poorly implemented.

The tail-end problem is also a caste and class issue. In many delta canal systems, head-reach lands are disproportionately owned by upper-caste families who had the resources and political connections to secure land near the main channels. Tail-end lands are more likely to be farmed by OBC and SC families. The canal system’s inequality mirrors social inequality — the same hierarchy reproduced through a different medium.

Only 64 percent of the irrigation potential created has actually been utilized — indicating a massive gap between infrastructure built and infrastructure functioning. Canals constructed but not connected to fields. Reservoirs built but not maintained. Potential created on paper, never realized in dirt.

The Drinking Water Crisis

Water scarcity extends beyond agriculture. Approximately 90 percent of rural households in Odisha meet their drinking water needs from groundwater — primarily through open wells, hand pumps, and bore wells. This groundwater is directly consumed without testing or treatment in most rural areas.

The contamination data is alarming. Fluoride levels exceeding the WHO limit of 1.5 milligrams per litre have been documented in ten districts. In Nuapada’s Boden block, concentrations reach 6.17 milligrams per litre — more than four times the safe limit. At these levels, dental and skeletal fluorosis is not a risk but a certainty. Nitrate contamination exceeds safe levels in fifteen districts — linked to agricultural runoff, fertilizer use, and poor sanitation.

Urban water supply is scarcely better. Bhubaneswar draws water from the Kuakhai River, a Mahanadi distributary. Only 17 of 47 wards have full pipe-water coverage. Most distribution pipelines date from the 1950s and 1960s. Cuttack depends on the Kathajodi, into which approximately 7.5 lakh litres of sewage effluents are discharged daily, much of it untreated. Heavy metals — lead, chromium, cadmium — contaminate the river water that serves as the city’s drinking water source.

Under the Jal Jeevan Mission, the target is functional household tap connections for every rural household. Nationally, approximately 81.8 percent of rural households now have tap water supply. Odisha’s progress has been slower — only 19 percent of villages are “Har Ghar Jal” certified. The gap between “tap connection provided” and “functional tap connection delivering safe water regularly” remains significant.

The coastal districts face an additional threat: saltwater intrusion. Rising sea levels and excessive groundwater pumping are driving the saltwater-freshwater interface landward. In Kendrapara, Jagatsinghpur, and parts of Bhadrak, wells that once yielded fresh water now draw brackish water. Shrimp farming along the coast has accelerated the intrusion. The process is quiet, invisible, and irreversible on any human timescale.

Odisha’s Counter-Strategy

In response to Chhattisgarh’s upstream dam-building, the Odisha government has announced plans to construct 16 dams and 15 barrages on the Mahanadi within Odisha’s borders. The stated purpose is to capture and store water before it flows downstream and out to sea.

In game theory, this is a tit-for-tat response — the classic strategy in iterated prisoner’s dilemma. Chhattisgarh builds barrages; Odisha builds barrages. The logic is retaliation: if the upstream state defects from cooperation, the downstream state matches the defection to avoid being exploited.

But tit-for-tat works in theory because it punishes the defector. In this case, Odisha’s barrages do not punish Chhattisgarh — they further fragment the Mahanadi within Odisha’s own territory, affecting ecological flows, fish migration, sediment transport to the delta, and the very communities the dams are supposed to protect. This is the problem with applying tit-for-tat to a river: retaliation does not impose costs on the opponent. It imposes costs on the retaliator.

The 16-dam plan may also be partly political signalling — demonstrating that the current government is “doing something” about the Mahanadi dispute. Construction costs are enormous and may crowd out spending on smaller, more impactful interventions: lift irrigation, tank restoration, groundwater recharge. The environmental clearance process for this many structures will face legal and activist opposition.

Meanwhile, the genuinely useful interventions languish. The Parvati Giri Mega Lift Irrigation Scheme — 174 schemes targeting 2,14,270 hectares of elevated terrain that gravity canals cannot reach — has faced delays in procurement, land acquisition, and electrification. Traditional tanks that could recharge groundwater for a fraction of the cost of new dams sit silted and encroached upon. Demand-side management — crop diversification away from water-intensive paddy, drip and sprinkler irrigation, industrial water pricing that reflects true cost — receives minimal policy attention.

The absence of demand-side management means every litre of new supply capacity is consumed by growing, unmanaged demand. This is a treadmill that guarantees permanent water stress regardless of how many dams are built.

What Climate Change Does to Water

The climate projections for Odisha’s water systems are not future threats. They are present realities measured against the baseline.

Total rainfall over Odisha is projected to increase under warming scenarios — but the distribution is what matters. Intense rainfall continues into October, extending beyond the traditional monsoon window. This is particularly dangerous because it overlaps with the period when Hirakud is supposed to be filling for winter irrigation. More rain in October does not help irrigation if it arrives as a flood surge that must be released through the dam rather than stored.

Rainfall variability has increased during the recent period (1995-2022) compared to the earlier period (1969-1996). Extreme flood events have risen nearly seven-fold. Odisha has witnessed a four-fold increase in droughts in the past ten years. Twenty-six of thirty districts are exposed to extreme climate events.

The concurrent floods-and-droughts problem is the most dangerous pattern. Districts like Angul, Cuttack, Dhenkanal, Gajapati, and Kalahandi have witnessed a shift toward drought events even though they remain classified as flood-prone. The mechanism: rising temperatures increase evapotranspiration, meaning that even with the same rainfall, less water reaches rivers and aquifers. But when rain does come, it falls in more concentrated bursts, causing floods without adequately recharging groundwater.

The compounding effects are what make Odisha’s situation genuinely threatening.

Sedimentation plus higher flood peaks: Hirakud’s reservoir is shrinking at the same time that climate change is producing more extreme flood events. Less capacity to absorb larger floods.

Reduced dry-season flow plus rising demand: Chhattisgarh’s upstream abstraction reduces Mahanadi dry-season flows at the same time that Odisha’s agricultural, industrial, and urban water demand is growing.

Saltwater intrusion plus aquifer depletion: Coastal aquifers face pressure from both directions — sea-level rise pushing saltwater inland from below, and over-extraction drawing down freshwater tables from above. The two processes reinforce each other.

Agricultural crisis plus migration: As rain-fed agriculture becomes less reliable, rural distress drives more out-migration from western Odisha. But migration depletes the rural labour force that maintains traditional water systems — tanks, embankments, channels — further degrading water infrastructure in a vicious cycle.

The Prisoner’s Dilemma at Every Scale

The Mahanadi is not a single game. It is prisoner’s dilemmas nested at every scale.

At the inter-state scale: Chhattisgarh versus Odisha — upstream abstraction versus downstream dependence, with no credible enforcement mechanism.

At the intra-state scale: western Odisha versus the delta — Hirakud’s construction displaced the highlands to protect the lowlands, and the irrigation system’s inequality reproduces the same pattern through canals and water allocations.

At the dam operations scale: flood control versus irrigation versus hydropower versus industry — four mandates competing for a shrinking resource, with every allocation a zero-sum choice that leaves someone worse off.

At the community scale: head-reach farmers versus tail-end farmers — the same canal, the same water, but radically different outcomes determined by position, which correlates with caste, class, and political connection.

At the aquifer scale: today’s extraction versus tomorrow’s availability — every bore well drilled in western Odisha’s hard-rock geology is a defection against future users, but individually rational for the farmer who needs water now.

The pattern is consistent. At every scale, the structure of the game produces outcomes where individual rationality leads to collective harm. Cooperation would produce better outcomes for all — equitable water sharing between states, balanced dam operations, managed aquifer recharge, maintained traditional tanks. But cooperation requires institutions that do not exist, enforcement that cannot be credibly threatened, and time horizons longer than electoral cycles.

The Constitution placed water in the State List because water seemed local in 1950. But water — flowing, evaporating, infiltrating, rising, falling — does not respect the boundaries that governance assumes. The Mahanadi flows from Chhattisgarh to Odisha regardless of which party governs either state. Groundwater drains across district boundaries regardless of which department manages it. Climate change alters the monsoon regardless of which committee studies it.

India’s federal system has produced no mechanism equal to this reality. The Inter-State River Water Disputes Act of 1956 was designed for an era of lower demand and simpler hydrology. The tribunals it creates take decades. The rulings they produce are weakly enforced. And the fixed-quantum allocation framework — dividing a certain number of cubic metres between states — does not account for a future where the total quantum is uncertain, variable, and declining.

The Mahanadi needs something India has never built: a governance structure that manages an entire river basin as a single system, from source to sea, across state boundaries, integrating flood control with irrigation, industrial use with ecological flow, surface water with groundwater, and present demand with climate-uncertain future supply.

That structure does not exist. What exists is what SeeUtkal has documented in every domain: fragmented institutions, unresolved historical grievances, perverse incentive equilibria, and the slow accumulation of damage that no single decision caused but no single intervention can reverse.

The Mahanadi will keep flowing. The question is what will be left of Odisha’s water security when the tribunal finally delivers its verdict — if it delivers one at all.

Sources

Government and Institutional:

Central Water Commission (CWC), Mahanadi & Eastern Rivers Organisation: Basin Details
Department of Water Resources (DoWR), Government of Odisha: Basin Maps & Features, Annual Reports
Central Ground Water Board (CGWB): Annual Groundwater Quality Report 2024
Odisha Hydropower Corporation (OHPC): Hirakud Hydro Electric Project
Ministry of Jal Shakti: Mahanadi Water Disputes Tribunal
Jal Jeevan Mission Dashboard
Special Relief Commissioner, Odisha: Flood Data

Inter-State Dispute Sources:

Pragativadi: “Mahanadi Water Row — Tribunal Slams Slow Progress” (2026)
The Week: “Will Mahanadi Water-Sharing Dispute End as BJP Rules Both States?” (September 2024)
Odisha Plus: “Mahanadi Water Dispute — Amicable Solution” (December 2025)
Heinrich Boll Foundation: “Mahanadi: Coal Rich, Water Stressed” (2018)
Mongabay India: “Can Odisha and Chhattisgarh Move Beyond Conventional Approaches?” (2021)
The Leaflet: “Mahanadi Water Disputes Tribunal Completes Visit to Chhattisgarh” (2026)

Dam and Flood Sources:

ETV Bharat: “Hirakud Dam Water Capacity Drops by 27%”
India Water Portal: “Floods, Fields and Factories — Hirakud Dam”
NIT Rourkela Thesis: “Temporal Analysis of Area-Capacity Curve for Hirakud Reservoir”
ResearchGate: “Floods in Mahanadi River — Causes and Management”
ResearchGate: “Politics of Water — Hirakud Dam”

Water Quality and Groundwater:

CGWB Annual Report 2024: Fluoride and Nitrate Contamination Data
PIB: “Persistent Drinking Water Distress and Failure of Groundwater Recharge in Odisha”
MDPI Waters: “Hydrogeochemical and Geospatial Insights into Groundwater Contamination in Western Odisha” (2025)
Springer: “Surface Water Quality Evaluation — Mahanadi” (2025)
Springer: “Groundwater Vulnerability to Fluoride in Western Odisha”

Climate and Projections:

IWA Publishing: “Projected Change in the Rainfall Behaviour Over Odisha” (2024)
Nature Scientific Reports: “Monsoon Rainfall Trends and Change Point Detection in Odisha” (2025)
CEEW: “26 Districts in Odisha Vulnerable to Extreme Climate Events”
Springer: “GIS-based Saltwater Vulnerability Mapping of Northern Coast of Odisha”
Down to Earth: “Kendrapara Faces Twin Threats of Floods and Droughts”

Comparative Water Disputes:

Wikipedia: “Kaveri River Water Dispute” — Tribunal timeline 1990-2018
Wikipedia: “Krishna Water Disputes Tribunal” — Still unresolved after 55+ years
Drishti IAS: Cauvery and Krishna dispute analyses

Cross-references within SeeUtkal:

The Long Arc Chapter 3: The “cathedral in the village” — Hirakud displacement as prototype
The Long Arc Chapter 5: The extraction equilibrium — coal-water nexus as variant
The Leaving Chapter 6: Western Odisha drought-migration cycle
Delhi’s Odisha Chapter 7: Centre’s role in Hirakud construction and national water governance
Value Chain series: Water as hidden input in the per-tonne economics of mineral extraction
Women’s Odisha Chapter 1: Feminization of agriculture when men migrate — water scarcity as trigger

Source Research

The raw research that informs this series.