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How Assam’s Recurrent Floods Are Becoming an Economic Burden

Assam’s recurrent floods are creating a growing economic burden, from ₹200 crore in estimated annual losses to 4.27 lakh hectares of land lost to erosion since 1950. As rainfall patterns shift and compound flooding intensifies, the state faces rising risks to livelihoods, infrastructure and development.

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Riverbank erosion threatening homes and livelihoods along a flood-prone riverbank.
Riverbank erosion threatens homes and livelihoods, highlighting the permanent economic costs of Assam’s recurrent flooding. Representational image. Image credit: GM Khairul/Pixabay

Floods are a recurring part of life in Assam. Every monsoon, the Brahmaputra and its tributaries spill into the state’s floodplains, disrupting agriculture, damaging infrastructure and forcing communities to move. But each flood leaves behind more than waterlogged fields and damaged roads. It also leaves an economic bill.

On average, floods inundate 9.31 lakh hectares of Assam every year, according to the state government. Nearly 40% of the state’s land area is flood-prone, while average annual flood losses are estimated at around INR 200 crore. Riverbank erosion adds a more permanent cost. According to report by Climate Central, Assam has lost nearly 4.27 lakh hectares of land since 1950, equivalent to about 7.4% of its geographical area.

The cost does not end when the water recedes. Floods repeatedly disrupt agriculture, tea plantations, fisheries, transport and livelihoods. When a river changes course and takes away farmland, the loss can last for generations. Homes disappear, productive land shrinks and families are forced to start again elsewhere.

The scale of displacement shows how closely the human and economic costs are linked. In 2024, floods in Assam triggered an estimated 2.5 million internal displacements, accounting for nearly half of all disaster-related displacements recorded in India that year.

For a state that has learned to live with floods, the bigger challenge is now managing the repeated economic shocks they create.

When Floods Become Compound

Assam’s floods are rarely the result of one factor alone. Increasingly, several processes can come together to push rivers beyond their limits. Scientists describe this as compound flooding—when multiple sources contribute to flooding at the same time.

Heavy rainfall over Assam can coincide with intense precipitation upstream in Arunachal Pradesh, Bhutan and Tibet. Snow and glacier melt in the eastern Himalayas add seasonal runoff, while swollen tributaries, landslides and riverbank erosion can make the situation worse. The result can be higher flood peaks and longer periods of inundation.

The economic consequences can also multiply. Heavy rain may destroy crops, while rising river levels erode farmland and damage roads. A washed-out bridge can disrupt the movement of food and goods. A flooded market can stop local businesses from operating. For families dependent on daily wages, even a few days without work can mean lost income. In other words, the flood may last days, but its economic effects can last much longer.

Assam recurrent floods and its economic burden.
Floodwater fills a home, damaging interiors and belongings illustrating the hidden household costs of recurrent flooding. Representational image. Image credit: Vilkass/Pexels

A River that Keeps Reshaping the Economy

The Brahmaputra basin stretches across China, Bhutan, India and Bangladesh, covering approximately 650,000 square kilometres. Once the river enters India, it travels for about 710 kilometres through the Assam Valley.

It is a river in constant motion. The Brahmaputra carries huge quantities of sediment from the Himalayas, creating braided channels, shifting sandbars and constantly changing riverbanks.

For Assam, this makes flooding different from a short-lived disaster. The river does not simply cover the land; it can redraw the map.

Assam has lost approximately 4.27 lakh hectares of land to erosion since 1950. The loss is not merely geographical. Farmland disappears, homes are displaced and established settlements can be cut off or forced to move. With the land goes the economic activity that depended on it.

Climate projections suggest that these pressures could intensify. The Assam State Action Plan on Climate Change projects a 5–38% increase in extreme rainfall events and more than a 25% rise in flood events under future climate scenarios. Models also project around a 13% increase in the Brahmaputra’s annual streamflow, while sediment loads could rise by nearly 40% by the end of the century.

If these projections materialise, Assam could face more frequent flooding alongside growing pressure on land, infrastructure and livelihoods.

The Himalayan Connection

The economic risks in Assam begin much farther upstream. The Hindu Kush Himalayan Assessment projects that even if global warming is limited to 1.5°C, at least one-third of the region’s glacier volume could disappear by 2100. Under higher-emission scenarios, glacier losses could exceed 50–65%.

In the short term, warmer temperatures can accelerate snow and glacier melt, increasing runoff. Over time, continued glacier retreat could alter the timing and volume of water entering the river system. Rainfall patterns are changing too. A systematic review cited in the document points to a possible shift in peak rainfall from July to August, along with increasing post-monsoon rainfall and declining pre-monsoon rainfall.

That matters because when rain falls can be as important as how much falls. More intense rainfall can produce sharper flood peaks and leave less time for water to drain.

As Mahesh Palawat, Vice President–Meteorology and Climate Change at Skymet Weather, notes, increasing rainfall variability and shifting monsoon behaviour are making floods less predictable. For Assam, unpredictability has an economic cost of its own. Farmers need to decide when to sow and harvest. Businesses depend on functioning roads and transport networks. Governments have to plan infrastructure that may need to withstand increasingly uncertain conditions.

The Cost of Exposure

Climate change is only part of the picture. Deforestation, urbanisation and unplanned land-use changes can increase runoff and reduce the landscape’s ability to hold water. Development in flood-prone areas also puts more homes, businesses and infrastructure in harm’s way.

The vulnerability is particularly high in low-lying floodplain and char areas, where communities face both flooding and erosion. Repeated displacement can mean losing homes, productive assets and livelihoods more than once. This is why the economic burden of flooding cannot be measured only by the value of buildings or crops damaged during a flood.

It also includes lost working days, disrupted supply chains, damaged crops, interrupted transport, relocation costs and public spending on repairs and recovery. The estimated INR 200 crore in average annual flood losses therefore represents only part of the wider economic burden.

A Future of More Frequent Shocks

The projections point to a difficult future. Hydrological simulations cited in the document suggest that a flood that currently occurs once every 10 years could occur once every two years by 2080 under high-emission scenarios.

This does not mean every future flood will follow that pattern. But it shows how sharply flood frequency could change. And that raises an economic question that Assam will increasingly have to confront: How often can communities, businesses and governments afford to rebuild?

If floods become more frequent, recovery from one event could overlap with preparation for the next. Money spent repairing roads, restoring farmland and rebuilding homes would have to compete with investments needed for long-term development. The cost of doing nothing could therefore extend well beyond the next flood season.

Reducing the Cost of Living With Floods

Assam cannot stop the Brahmaputra from flooding. But it can reduce the damage and, in turn, reduce the economic cost. That means improving upstream observations and early-warning systems, strengthening data sharing across the Brahmaputra basin and designing infrastructure for future climate risks. Floodplain planning, erosion management and ecosystem protection also need to become part of long-term development planning rather than being treated only as disaster-response measures.

Better forecasts can give communities and businesses more time to move livestock, crops and equipment. Better risk maps can help determine where critical infrastructure should, and should not be built. Protecting natural flood buffers can also help slow runoff and reduce exposure.

As Dr Akshay Deoras, Research Scientist at the National Centre for Atmospheric Science, University of Reading, argues, preparing for Assam’s future floods means accounting for changing rainfall patterns, not simply the total amount of rainfall. The Brahmaputra will continue to shape Assam. Floods will remain part of the state’s geography.

The challenge is to ensure that every flood does not also become another economic setback, another loss of land, another disrupted livelihood, another damaged road and another bill to pay. Living with the Brahmaputra may be unavoidable. Making that relationship increasingly unaffordable is not.

EP Staff is the editorial team at EdPublica, an independent media organisation focused on science, education, environment and public policy. The team produces evidence-based news, features, explainers and analysis on issues that shape society and everyday life.

Climate

Europe Braces for Extremes as Commission Unveils Climate Resilience Framework

The EU climate resilience framework aims to help cities, businesses and communities prepare for heatwaves, droughts and floods.

Sebin Pious

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The EU climate resilience framework aims to help cities, businesses and communities prepare for heatwaves,
Floodwaters inundate a European city street, submerging roads and the ground floors of buildings. As extreme rainfall and flooding intensify with climate change, the European Commission is pushing for a stronger framework to help cities and communities prepare for growing climate risks. Representative image. Photo: Valentin Ivantsov/Pexels

The EU climate resilience framework aims to help Europe prepare for intensifying heatwaves, droughts and floods. Unveiled by the European Commission, the initiative seeks to strengthen climate risk assessments, improve disaster preparedness and integrate climate adaptation into public policy and economic planning.

Europe is warming at roughly twice the global average, and is already bearing the brunt of long heatwaves, severe droughts and heavy floods. With three in four Europeans living in cities and urban areas, where these threats are growing, the European Commission has presented a new EU Framework for Climate Resilience.

The goal is to change how the continent anticipates, prepares for and handles climate risk. Rather than reacting to disasters after they happen, the framework aims to build climate safety into every major policy area.

EU Climate Resilience Framework and the Case for Action

Recent extreme weather has been costly. According to the Commission, estimated economic losses from climate damage between 2022 and 2025 reached about €200 billion.

Adapting infrastructure and preparing the economy for future extremes will require investment of around €70 billion a year. The Commission argues that spending early still makes sense, because returns on adaptation can exceed ten times the sum invested by preventing loss and damage. The global market for climate adaptation solutions is also expected to grow to €3.5 trillion by 2050, giving European industry a chance to innovate and lead.

A Shared Scientific Baseline and Simpler Rules

At the core of the package is a proposed Climate Resilience Law, which would set a common warming baseline grounded in current science. It assumes global temperatures will rise by 1.5°C above pre-industrial levels by 2030, 2°C by 2050 and 3°C by 2100, giving member states a shared benchmark for risk assessment and decision-making.

To cut paperwork and delays, the law would replace fragmented national planning requirements with a single national strategic plan. Regular, improved climate risk assessments would also keep national and EU-wide strategies aligned.

Practical Tools for Public Authorities and Businesses

The framework introduces digital tools on a new online European platform to help communities, businesses and local authorities tackle climate risks:

  • The European Climate Viewer: Built by the European Centre for Medium-Range Weather Forecasts, this interactive map shows projected climate hazards across the continent. It will eventually draw on supercomputing power through the Destination Earth initiative.
  • The Navigator of Climate Resilience Tools: Created by the European Environment Agency, it helps users find suitable adaptation resources based on their location, sector and specific risks.
  • The Solutions Explorer: This showcases practical, tested adaptation solutions developed through the EU Mission on Adaptation to Climate Change.

From Heatwave Plan to 2028 Strategy

The Commission is moving ahead with the rollout immediately. Planned initiatives include a European Heatwave Plan, a Climate Insurance Alliance, a European Water Initiative, a PreparEU Advisory Group on disaster preparedness and a project to identify the 100 most vulnerable territories in Europe. A broader EU strategic plan on climate resilience is scheduled to be proposed in 2028.

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Delhi’s Air Quality Paradox: Lower Average, Higher Everyday Pollution

Delhi’s average AQI fell by 15.8 per cent in 2026, but its median AQI rose by 14.1 per cent. A new assessment examines what these contrasting numbers reveal about the city’s everyday pollution.

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A farmer burns crop residue in a harvested agricultural field as thick smoke rises into the air.

Delhi recorded only three days with an Air Quality Index (AQI) above 200 between September 15 and October 23 this year. During the same period in 2025, the number was 10. Its average AQI also fell from 169.3 to 142.6, a 15.8 per cent improvement.

But there is another number in the data. Delhi’s median AQI rose from 135 to 154 during the same period. This means that although the city experienced fewer days of severe pollution, the air quality on a typical day was worse than the previous year.

The difference matters when assessing the health effects of air pollution. People are exposed to the air they breathe every day, not just during episodes when pollution reaches severe levels. Prolonged exposure is associated with respiratory and cardiovascular diseases, while polluted air can also affect children’s lung development.

A new assessment by Climate Trends, covering Delhi’s air quality, crop-residue burning in Punjab and Haryana, and meteorological conditions between 2024 and 2026, examines this gap between seasonal averages and everyday exposure.

What the AQI Average Leaves Out

The mean AQI is calculated using daily readings across a given period. A few exceptionally polluted days can push this average upwards. The median, on the other hand, is the middle reading when all daily values are arranged in order. It offers a better indication of what a typical day looks like.

Climate Trends’ analysis found that Delhi’s mean AQI declined by 15.8 per cent between 2025 and 2026. However, the median increased by 14.1 per cent. The maximum AQI also came down from 353 to 245, while the number of days above 200 dropped from 10 to three.

The improvement in the mean, therefore, was largely associated with the reduction in extreme pollution days. It did not indicate an improvement in the typical daily reading.

Aarti Khosla, Director of Climate Trends, draws attention to this difference.

“The average AQI fell 15.8% this autumn, and that is the number that will get reported as improvement. But the typical day, the one most Delhiites actually live through, got worse, up 14.1%.”

She argues that air quality policies should be evaluated using the pollution levels people experience regularly, rather than seasonal averages alone.

Farm Fires and Delhi’s Pollution: Numbers Don’t Move Together

Every October, crop-residue burning in Punjab and Haryana becomes a major focus of Delhi’s air pollution debate. Smoke from these fires can travel towards the capital, contributing to particulate pollution. However, the extent of its impact depends on weather conditions and the movement of air.

The three-year assessment found that the relationship between farm fires and Delhi’s AQI varied considerably across the study period. Between September 15 and October 15, 2025, satellite observations recorded 201 crop-residue fire events in Punjab and Haryana. In 2026, the number was 193, a decline of just four per cent. Delhi’s mean AQI, meanwhile, fell by 15.8 per cent.

The statistical correlation between daily fire counts and Delhi’s AQI also weakened. The same-day correlation coefficient fell from 0.62 in 2025 to 0.17 in 2026. The previous year’s figures show a different pattern. Between 2024 and 2025, combined fire events declined by 88 per cent, but Delhi’s mean AQI fell by only 3.9 per cent.

These comparisons do not establish that agricultural burning has no effect on Delhi’s air. They show that the number of fires alone cannot explain the city’s year-to-year AQI changes.

Dr Palak Balyan, Research Lead at Climate Trends, explains that the movement of smoke depends on atmospheric conditions.

“Wind direction, wind speed, rainfall and atmospheric mixing determine whether smoke is transported towards Delhi, dispersed or removed from the atmosphere.”

The study also identifies traffic, industrial emissions, road and construction dust, and other regional combustion sources as contributors to Delhi’s pollution. However, it does not quantify how much each source contributed to the AQI changes recorded in 2026.

El Niño: Game Changer

The assessment also considers whether the strengthening El Niño conditions in 2026 could explain the changes in pollution and agricultural burning. El Niño refers to the periodic warming of sea-surface temperatures in the central and eastern equatorial Pacific Ocean. It influences large-scale atmospheric circulation and can affect rainfall and temperature patterns in different regions.

According to the NOAA Climate Prediction Center assessment cited in the report, the Niño-3.4 sea-surface temperature anomaly reached approximately +2.1°C by October 2026. NOAA also projected an 83 per cent or higher probability of strong-to-very-strong El Niño conditions continuing through January–March 2027.

Despite these conditions, the combined number of farm-fire events in Punjab and Haryana did not increase. Delhi’s mean AQI also declined.

The local meteorological data present a more complicated picture. Delhi’s accumulated rainfall between September 15 and October 23 fell from 46.70 mm in 2025 to 10.19 mm in 2026, a decline of 78.2 per cent. Its mean planetary boundary layer height (PBLH), which indicates the depth of the lower atmospheric layer where pollutants are mixed, decreased by 4.3 per cent.

Lower rainfall reduces the removal of airborne particles through precipitation. A lower boundary layer can also limit the vertical space available for pollutants to disperse.

Mean wind speed increased by 2.1 per cent, from 2.40 to 2.45 metres per second. Stronger winds can help disperse pollutants, but their effect depends on direction and the areas from which the air is moving.

Dr Sagnik Dey, Head and Vipula and Mahesh Chaturvedi Chair Professor in Policy Studies at the Centre for Atmospheric Sciences, IIT Delhi, cautions against using El Niño as a direct indicator of air pollution.

“El Niño should not be viewed as a direct predictor of air pollution. Its influence on regional air quality depends on how large-scale climate variability interacts with local rainfall, temperature, wind patterns and atmospheric stability.”

The assessment does not establish that El Niño caused the observed changes in Delhi’s AQI. It also cannot isolate the contribution of individual weather conditions or pollution sources to the decline in the city’s average reading.

Health Cost of an Ordinary Day

The distinction between average and median AQI has implications beyond how Delhi’s annual pollution figures are reported.

Dr Harshal Ramesh Salve, Professor at the All India Institute of Medical Sciences (AIIMS), Delhi, points out that the health burden of pollution develops through prolonged exposure, rather than only during a handful of severe pollution episodes.

He identifies impaired lung development in children and increased lifetime cardiovascular risks among adults as concerns associated with sustained exposure. He also recommends early screening for high-risk adults and treating clean air as a year-round public health priority.

The 2026 assessment does not show that Delhi has solved its pollution problem. Its findings show that a decline in the number of severe days can improve the seasonal average without improving the air quality people experience on most days.

The study points to a need to examine Delhi’s pollution beyond the seasonal AQI average. With the median AQI rising despite fewer severe pollution days, the improvement recorded in 2026 does not reflect cleaner everyday air. The contribution of traffic, industrial activity, construction dust and other local sources needs closer assessment, particularly since the study could not isolate their individual impact. Without that understanding, the reasons behind Delhi’s changing air quality will remain only partially explained.

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252 Million Hectares Under Restoration Across 149 Countries, but UN Warns of 2030 Target Gap

A UN report finds that 252 million hectares across 149 countries are under ecosystem restoration. However, increased investment and accelerated action are needed to meet global restoration targets by 2030.

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River flowing through a forested mountain landscape with evergreen trees and snow-covered peaks.
Healthy mountain forests and river ecosystems play an important role in maintaining biodiversity and ecological balance.Image credit:Pexels

Global efforts to restore degraded ecosystems have reached 252 million hectares across 149 countries, generating more than one million green jobs. However, a new United Nations assessment warns that restoration efforts remain insufficient to meet international biodiversity targets by 2030, calling for a more than fourfold increase in annual investment.

The findings are presented in the Restoration Progress Report: Nature’s Comeback – Scaling Ecosystem Restoration for People and Planet, released on October 29, 2026, by the United Nations Environment Programme (UNEP), the Food and Agriculture Organization (FAO) and the Secretariat of the Convention on Biological Diversity (CBD).

The report provides the first comprehensive global assessment of progress towards commitments to restore approximately one billion hectares of degraded ecosystems. These commitments are linked to the UN Decade on Ecosystem Restoration (2021–2030) and the Kunming-Montreal Global Biodiversity Framework, which calls for at least 30 per cent of degraded terrestrial, freshwater, marine and coastal ecosystems to be under effective restoration by 2030.

According to the assessment, the 252 million hectares currently documented under restoration represent the largest recorded global restoration effort. However, this accounts for only 34 per cent of the indicative global benchmark associated with the 2030 target.

Freshwater and marine ecosystems lag behind

The report identifies considerable differences in restoration progress across regions and ecosystem types. Asia accounts for the largest share of documented restoration, with 192.2 million hectares, followed by Africa with 36.3 million hectares and Europe with 9.1 million hectares. North and Central America account for 5.8 million hectares, South America 5.4 million hectares and Oceania 3.2 million hectares.

However, the report cautions that these figures should not be interpreted as a ranking of restoration performance, as they also reflect differences in regional land area and monitoring and reporting capacities.

Restoration of terrestrial ecosystems has reached nearly half of the global 2030 target. China reports the largest terrestrial restoration area, with 127.4 million hectares, while substantial restoration activities have also been documented in Mongolia and Kazakhstan.

Progress remains considerably slower in freshwater, marine and coastal ecosystems, despite these environments experiencing rapid degradation.

restoration
ecosystem

A river along the side of a dense forest. Image credit: Pexels

The assessment documents 11 million hectares of freshwater ecosystems under restoration across 62 countries and 5.7 million hectares of marine and coastal ecosystems across 46 countries. The report also notes that limited monitoring and reporting may mean that actual restoration activities in these ecosystems are higher than the documented figures.

Meanwhile, the share of countries reporting implemented wetland restoration or rehabilitation programmes has increased from 8 per cent in 2022 to 54 per cent.

Restoration financing needs to increase fourfold

Insufficient investment remains a major obstacle to achieving global restoration commitments. The report estimates that annual restoration financing must increase from US$64 billion to US$296 billion by 2030, representing more than a fourfold rise.

Agroforestry requires the largest estimated annual investment, at US$87 billion, followed by restorative reforestation at US$52 billion, peatland restoration at US$44 billion and seagrass restoration at US$28 billion.

The report identifies employment generation as another potential benefit of scaling up restoration. While more than one million green jobs have already been associated with restoration initiatives, increased global investment could generate up to 32 million additional jobs by 2030.

It also highlights the potential contribution of ecosystem restoration to climate mitigation and biodiversity protection. Research cited in the assessment indicates that restoring just 15 per cent of global priority areas could capture and store 30 per cent of carbon dioxide-equivalent emissions released since the Industrial Revolution and help prevent 60 per cent of projected species extinctions.

The report further identifies the participation and leadership of Indigenous Peoples and local communities as essential to ensuring long-term restoration outcomes. Secure land rights, stronger monitoring systems and sustained political commitment are among the priorities identified.

With five years remaining in the UN Decade on Ecosystem Restoration, the assessment calls on governments to move beyond isolated restoration projects towards coordinated, long-term programmes that address the underlying causes of ecosystem degradation.

It emphasises that the 2030 targets should serve as a milestone in the restoration process rather than its conclusion, as ecological recovery requires sustained action and investment beyond the end of the decade.

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