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Flood is one of the most common hazards in many countries, affecting both life and properties. The recent climatic changes have brought a rise in both flood frequency and intensity making this phenomenon more devastating to people. Especially, the riparian communities of Jamalpur along the Jamuna river suffer at least once every year accounting for this natural hazard. In a scenario like this, precaution is a crucial task to fight against this natural phenomenon. Therefore, this study attempts to identify the flood vulnerable zones of Jamalpur district situating beside Jamuna river with a multi-criteria analysis. Assessment of flood vulnerability included consideration of physical indicators like rainfall, drainage density, distance from river, slope, land use land cover, elevation, soil classes as well as social indicators like population density, female density, literacy rate, number of shelters, unmetalled road and number of health personnel. All these parameters were analyzed in Geographic Information System (GIS) and assigned weightage with a multi-criteria decision-making technique namely- Analytic Hierarchy Process (AHP). Finally, a flood vulnerability map was generated for the seven Upazilas of Jamalpur district. Very high, high, moderate and low vulnerable zones were identified after overlaying all physical and social indicator maps under consideration. 45.96% portion of a total of 2115.2 sq. Km. Area was under very high and highly vulnerable zones in the final vulnerability map of Jamalpur. Such type of assessment process is significant for flood mitigation projects with a view to providing the greatest concern to the most vulnerable zones. The vulnerability maps can also help the policymakers to provide emergency aids and other privileges to those who are in most need of it.

Frequent floods and river erosions, exacerbated by global climate change, are causing miseries to millions of people worldwide. Thousands of citizens in Bangladesh become homeless every year due to recurrent floods and river erosions. This study reveals an unusual fact that the inhabitants of the Jamuna river floodplain are choosing immobility over migration to safe locations in such situations. The victims of forced migration usually stay within the same zone of calamity. To understand the dynamics, this study focused on determining the factors influencing immobility of the victims in Dewanganj sub-district of Jamalpur district in north-central Bangladesh. Primary data were collected from three distinct locations through oral histories, Focus Group Discussions, Key Informant Interviews, and household questionnaire surveys. Migration has a negative correlation (− 0.29) with flood experiences and a positive correlation (0.63) with erosion experiences of the victims. Thus, the flood-victims tend to be immobile more than the erosion-victims. The tipping-depth for flood is the highest among women in the island char, and the tipping-distance for erosion is the lowest in the attached char. The low living cost, working opportunities for women, and non-government/ government supports are the most important facilitators of immobility, and poverty and uncertainty in adapting to a new place are the major obstructive indicators of mobility. Suggestions are provided as to how immobility can be encouraged in hazard-prone vulnerable settings. [ABSTRACT FROM AUTHOR]