Why are there many floods in Bangladesh?

Professional and concise: 1. Located in the tropical monsoon climate zone, a lot of precipitation is concentrated in the rainy season. 2. The confluence of Ganges River and Brahmaputra River is prone to flood. 3. The lower reaches of Ganges River are low-lying and have poor drainage. 4. The unique trumpet-shaped bay in the Bay of Bengal is easy to absorb the seawater brought by hurricanes and summer monsoon. Representative: The formula to answer the flood disaster is: climate+topography+(river network (1) climate reason: affected by monsoon climate, after May every year, the westerly airflow in the south branch begins to weaken and spread northward, the subtropical high in the western Pacific gradually moves northward, the southwest monsoon in the Bay of Bengal erupts, and a large amount of water vapor keeps coming up from the southerly climate ocean. Influenced by the weather systems such as vortex, shear and tropical convergence, Yunnan has formed the weather circulation background of heavy rain and heavy rain. (2) the influence of agricultural hydrological conditions; Agrohydrological conditions such as topography, landform, catchment area, surface runoff and groundwater level are another main cause of flood disaster. Areas with closed terrain, low terrain, large catchment area, slow surface runoff and high groundwater level are prone to waterlogging, while areas with steep slopes and serious vegetation damage are prone to floods and mudslides. Flat dams or low-lying areas along the middle and lower reaches of rivers will be flooded if the water level rises in rainy season and it rains again. ⑶ Human factors: For a long time, due to deforestation, vegetation destruction, soil erosion, deterioration of ecological environment, flood disasters have increased, and in recent two years, the efforts of returning farmland to forests and governance have been intensified, which has slowed down. Reference: /question/22468925.html3