More than 100 people have died in devastating floods in India's northeastern Assam state, an event described by officials as the worst in approximately six decades. The region, highly vulnerable to climate impacts, experienced a sudden and intense rise in river levels, catching many residents without warning.
Rojo Neog was among the victims, swept away by the Dikhow River on July 19 after heavy rains caused a rapid surge in water levels. His niece, Priyakshi Gogoi, reported that floodwaters in their village rose from knee-deep to neck-deep in about 30 minutes, with no prior warning.
While Assam frequently experiences floods, climate and disaster experts cite a combination of factors for the increasing severity and unpredictability of recent events. These include increasingly intense rainfall, sand mining, deforestation in upstream areas, loss of wetlands, rapid urbanization, and an over-reliance on embankments. These elements collectively overwhelm natural water absorption capacities and make disaster response more challenging.
Experts advocate for a shift in focus from costly flood-control structures and immediate relief efforts towards more robust early warning systems, scientific mapping of evolving flood risks, and the restoration of natural landscapes like forests, wetlands, and floodplains. Himanshu Thakkar, coordinator of the environmental group South Asia Network on Dams, Rivers and People, emphasized the need for better flood risk understanding and forecasting to improve preparedness and minimize casualties. India, he noted, excels at post-disaster rescue and relief but lags in proactive disaster risk reduction.
Intensified Rainfall and Human Impact
India, a significant contributor to global greenhouse gas emissions, is disproportionately affected by climate change. Assam, in particular, is highly susceptible, with about 40% of its land vulnerable to flooding from the Brahmaputra River and its tributaries. The annual monsoon rains, crucial for agriculture and water replenishment, are becoming more erratic and intense due to global warming, increasing the likelihood of deadly floods.
The recent floods have displaced over 700,000 people, submerged vast tracts of farmland, and damaged critical infrastructure. Many residents are returning to their homes as waters recede, but thousands remain in relief camps. The personal tragedies are stark, as exemplified by Krishna Karamkar, who drowned while saving his son from the overflowing Dikhow River.
Challenges in Early Warning and Preparedness
Despite efforts to expand flood forecasting and early-warning systems, their effectiveness is hampered when the information fails to reach at-risk communities, is not understood, or when safe evacuation routes are unavailable. Independent researcher Mirza Zulfiqar Rahman highlighted that warnings often don't penetrate communities, and preparedness drills are infrequent.
A report by World Weather Attribution indicated that rapid urbanization, deforestation, and local vulnerabilities significantly worsened the flooding in Assam and neighboring states. The Brahmaputra River's natural tendency to reshape its course with sediment from the Himalayas makes flood control complex, but human-induced landscape changes have amplified the danger.
Sneha Ganguly of the Red Cross Red Crescent Climate Center noted that unplanned urbanization, deforestation, degraded wetlands, poor drainage, and inadequate flood management are key contributors to increased flood risk. While engineering solutions like embankments are sometimes necessary, they can pose risks if natural drainage is compromised.
Rethinking Flood Management
Emmanuel Raju, director of the Copenhagen Centre for Disaster Research, stressed the importance of adapting by learning to coexist with rivers through wetland restoration and proactive measures. Rahman also called for flood planning to align with natural river basin contours rather than administrative boundaries, as upstream changes directly impact downstream regions.
Climate and disaster expert Nihal Ranjit observed that climate change is pushing flood events beyond the coping capacity of communities accustomed to seasonal inundation. This is forcing some populations to relocate, a trend exacerbated by increasing climate impacts.
The recurring and increasingly severe flooding underscores the urgent need for comprehensive, long-term planning that integrates climate resilience, improved warning systems, and the restoration of natural flood defenses in Assam and other vulnerable regions.