Published: 07:09 AM, 14 July 2026
Clogged Drainage System Floods Major Cities Every Year
Every monsoon, millions of people in Bangladesh experience the same frustrating reality as roads, homes, schools, and marketplaces go underwater after only a few hours of heavy rainfall. Although seasonal rain is a natural phenomenon, the repeated flooding of major cities is largely caused by dysfunctional drainage systems that fail to carry away excess water efficiently.
Cities such as Dhaka, Chattogram, Khulna, and Sylhet are among the worst affected. Waterlogged streets create severe traffic congestion, disrupt business activities, and prevent students and office workers from reaching their destinations. Hospitals and emergency services also face difficulties, while low-income communities suffer the most as floodwater enters their homes and damages household belongings. Experts identify several reasons behind the poor drainage system. Rapid and unplanned urbanization has reduced natural canals, wetlands, and ponds that once stored rainwater. Many drainage channels have been encroached upon or filled for construction projects. In addition, drains are frequently clogged with plastic waste, polythene bags, and other garbage because of improper waste management and public negligence. As a result, rainwater cannot flow freely, causing streets to flood within a short time.
Climate change has further intensified the problem by increasing the frequency and intensity of heavy rainfall. Aging drainage infrastructure is unable to cope with the growing population and expanding urban areas. Poor coordination among different government agencies responsible for city planning, drainage maintenance, and waste disposal also delays effective solutions. The consequences of urban flooding are far-reaching. Businesses lose millions of taka due to interrupted operations, while transport systems become paralyzed for hours. Stagnant water increases the risk of waterborne diseases such as diarrhea, dengue, and other mosquito-borne illnesses. The environmental impact is equally serious, as polluted floodwater contaminates nearby water bodies and creates unhealthy living conditions.
To address this recurring crisis, authorities must modernize drainage networks, restore natural waterways, and ensure regular cleaning of drains before and during the rainy season. Strict laws should be enforced to prevent illegal encroachment on canals and wetlands. Public awareness campaigns can also encourage citizens to dispose of waste responsibly and keep drainage channels free from blockage. Urban flooding is not an unavoidable disaster but a preventable one. With proper planning, efficient management, and active public participation, Bangladesh can significantly reduce waterlogging in its major cities. Long-term investment in sustainable urban infrastructure is essential to protect lives, strengthen the economy, and improve the quality of life for future generations.
