Bangladesh is naturally one of the most disaster-prone countries in the world. We have grown up resisting the wrath of storm and water. In this country, traditionally known for its six distinct seasons, climate patterns are becoming increasingly erratic. Summers are growing hotter, the monsoon more intense, and winters more severe, adding to our woes. This unpredictability is not only natural but also compounded by external diplomatic and environmental factors. As a riverine country with more than 700 rivers, Bangladesh is highly susceptible to flooding. The annual monsoon, melting snow from the Himalayas, and heavy rainfall result in vast areas being submerged. While seasonal floods can benefit agriculture, excessive and frequent flooding disrupts lives, livelihoods, and the national economy.
In recent decades, floods have become more frequent and devastating. We need more than temporary relief-we need sustainable, long-term solutions. Two critical areas must be addressed: the construction of durable dams and robust preparedness mechanisms.
Bangladesh's natural structure makes it one of the world's most flood-prone nations. On average, 20% of the country experiences flooding annually. In extreme cases, such as in 1988, 1998, 2004, 2017, 2022, 2023, and 2024, this number soared to 60-70%, affecting millions and displacing families. The flood of 1998 lasted for 70 days and submerged two-thirds of the country. It impacted more than a million people and severely affected infrastructure, education, healthcare, and transportation.
Floods are caused by several factors, including torrential rainfall, hill runoff, river siltation, unplanned urbanization, weak dam infrastructure, and the encroachment of water bodies. According to the Bangladesh Water Development Board, the country has about 1,700 kilometers of embankments, most of which were constructed after independence. Many of these structures have deteriorated over time. Cracks, collapses, and illegal encroachment have rendered them ineffective.
These dams were often built without comprehensive planning, quality materials, or provisions for maintenance. Political interference, contractor syndicates, and corruption have further compromised their integrity. As a result, these dams fail to withstand major flooding events.
"A dam is more than a barrier against water-it is a crucial component of national resilience. In light of climate change, dam construction must evolve to meet new challenges. Modern dams should incorporate geotextile layers, concrete blocks, and reinforced structures to resist erosion. Engineering expertise and environmental considerations must guide design. Dams must be constructed in harmony with river flows to prevent unintended disruptions"
A dam is more than a barrier against water-it is a crucial component of national resilience. In light of climate change, dam construction must evolve to meet new challenges. Modern dams should incorporate geotextile layers, concrete blocks, and reinforced structures to resist erosion. Engineering expertise and environmental considerations must guide design. Dams must be constructed in harmony with river flows to prevent unintended disruptions.
Local community involvement is also essential. Community-based dam management committees can monitor and maintain these structures. Planting vegetation such as bamboo, cane, and palms on dam slopes can help prevent erosion and strengthen embankments.
Climate change has exacerbated weather irregularities in Bangladesh. Sudden downpours, prolonged droughts, and rapid hill runoff now trigger more unpredictable and intense floods. Experts predict that the frequency and intensity of floods will worsen in the next two to five decades, highlighting the urgent need for preventive measures.
Advance preparation is crucial. Technology-driven forecasting systems using satellites and sensors can provide 3-5 days of lead time before a flood. GIS-based digital mapping of flood-prone zones can guide early warning systems. Community workshops at schools, mosques, and community centers can build awareness. Local shelters must be adequately stocked with dry food, medicine, and clean water. Early warnings should be disseminated via SMS and mobile apps.
Although Bangladesh has implemented policies like the National Water Policy (1999), the National Disaster Management Plan (2021-25), and established the Flood Forecasting and Warning Centre (FFWC), implementation challenges persist. Project delays, corruption, lack of community input, and weak coordination with local authorities hinder progress.
We can learn from other nations. The Netherlands, despite being below sea level, controls flooding through its "Delta Works" project, which combines embankments, sluices, and artificial islands. Japan has incorporated disaster education into its national curriculum and runs nationwide drills to prepare citizens for emergencies.
Bangladesh must embrace these lessons. Long-term dam construction, periodic maintenance, anti-corruption measures, and public involvement are essential. Disaster education and technology integration should be prioritized.
Floods may not be fully preventable, but their damage can be significantly reduced. Building sustainable dams and preparing in advance require political commitment, strategic planning, and community participation. A dam is not merely a wall of earth-it is a living defense mechanism that safeguards our people and economy. Investing in resilient infrastructure today is the foundation for a safer tomorrow.
The writer is Founder Jatiya Rogi Kalyan Society
