Table of Contents
Dhaka, the capital of Bangladesh, is one of the world’s fastest-growing megacities. Its rapid urbanization has led to significant challenges related to flooding, which threaten the city’s infrastructure, environment, and residents’ livelihoods. Understanding the physical and human geography of Dhaka is essential to addressing these issues effectively.
Physical Geography of Dhaka
Dhaka is situated on the floodplains of the Ganges-Brahmaputra delta. The city lies low-lying, with an average elevation of about 4 meters above sea level. The region experiences heavy monsoon rains, which contribute to frequent flooding. The city is also affected by the overflow of nearby rivers, such as the Buriganga and Turag, especially during the rainy season.
Human Geography and Urban Expansion
Rapid population growth has led to unplanned urban expansion in Dhaka. Many residents live in informal settlements with inadequate drainage and infrastructure. The high density of buildings and poor waste management exacerbate flood risks. Additionally, encroachment on natural water bodies and wetlands reduces the land’s capacity to absorb floodwaters.
Challenges and Impact of Flooding
Flooding causes widespread damage in Dhaka, affecting homes, roads, and businesses. It disrupts transportation and access to essential services. The recurrent nature of floods leads to economic losses and health issues, such as waterborne diseases. Climate change is expected to increase the frequency and severity of flooding in the region.
Mitigation Strategies
- Improving drainage systems
- Restoring natural water bodies
- Implementing flood warning systems
- Enforcing urban planning regulations
- Raising public awareness about flood risks