Dhalchar union island facing rapid erosion, thousands displaced

Bangladesh | Climate
Research by CDL Research Team
Displacement Status
Ongoing
Hazard Category
Multi-hazard
Starting Year
2003
Displacement Range (km)
80 km

Core Event Data

Event ID

BANGLADESH-RE-1002

Event title

Dhalchar union island facing rapid erosion, thousands displaced

Country

Bangladesh

State/Province/Administrative division

Borishal division

District

Bhola District

Exact location

Dhalchar Union

Displacement starting year

2003

Displacement Status

Ongoing

Details of displacement

Dhalchar Union, a remote coastal island in Bangladesh’s Bhola District, is rapidly disappearing due to severe river erosion and tidal surges. Located at the estuary where the Meghna River meets the Bay of Bengal, the island lacks any protective embankment, leaving approximately 12,000 residents highly vulnerable to rising sea levels and worsening cyclones. Over the last two decades, the habitable area has drastically shrunk from 15 square km to just 3.5 square km. Local council records indicate an even more dire reduction, from 12 square km at its peak to only 2 square km currently.

The humanitarian impact is profound. Once home to roughly 17,000 people (3,500 families), the population has dwindled to approximately 8,000 people (1,000 families). For those remaining, life is a cycle of disaster; many have been forced to move their homes up to five times as the river encroaches further into human settlements. The erosion is not merely taking land but entire livelihoods. Historically a center for Hilsa fishing – producing Taka 200 crore worth of fish annually – the island’s economy has collapsed as markets and infrastructure wash away. Saltwater intrusion from tidal surges has submerged agricultural land, making crop cultivation impossible and leaving the majority of families destitute.

Displaced residents frequently face permanent loss with no viable path to return as their lands are completely submerged. While some move to neighboring islands like Char Gazaria or build makeshift shelters along mainland embankments, the majority seek refuge in the overcrowded slums of major cities like Dhaka, Chittagong, and Khulna. In Dhaka’s Kallyanpur slum, nearly the entire population originates from coastal districts like Bhola, having arrived in search of food and work after losing everything to the river.

Despite repeated formal requests from local leaders to rehabilitate displaced residents on government-owned “khas” land, these efforts are stalled by administrative hurdles regarding forest department regulations.

Hazard Details

Displacement Pathway

Primary Climate Hazard Displacement

Climate Linkage Type

Direct

Primary trigger

Climate

Environmental Hazard Category

Multi-hazard

Onset type

Slow

Environmental Hazard Type

Erosion

Climate driver

Sea Level Rise

Climate Vulnerable Zone

Yes

Vulnerable Zone Name

Meghna Estuary Coastal Char Zone

Displacement Impact

People Displaced

9000

Households Displaced

2499

Movement type

Forced

Displacement Range (km)

80

Temporary or Permanent

permanent

Displacement pattern

Mixed pattern

Number of Destination Locations Identified

3

Repeat displacement

Yes

Origin Land Type

mixed

Total Origin Area (ha)

1500

Origin Area (ha) - Common land

260

Destination location name

Kallyanpur slum (Dhaka)

Is this the primary relocation cluster?

No

Destination Land Type

mixed

Livelihood

Post-Displacement Livelihood

No stable source of income, Daily wage labor

Pre-Displacement Livelihood

Subsistence farming, Livestock herding, Fishing or aquaculture

Governance & Legal

Government Support Level

limited

Rehabilitation Support

none

Community demands

Land-for-Land Compensation, Allocation of Rehabilitation Land, Permanent Housing, Riverbank Protection Measures, Embankment Construction

Were the demands formally submitted?

Yes

Were the demands fulfilled?

No

Community complaints

Inadequate Compensation, State Failed to Prevent Erosion/Flooding, Failure of Embankment or Protection Infrastructure, Repeated Displacement Without Durable Solution, Loss of Livelihood, Loss of Agricultural Land

Were the complaints formally submitted?

Yes

Were the complaints formally addressed by govt?

No

Details on complaints

In Dhal Char, grievances regarding erosion, land loss, and the need for rehabilitation were formally raised multiple times by residents and local authorities, with the union council explicitly stating they had “written to the government many times” seeking intervention. These demands included erosion control measures and allocation of nearby khas land for resettlement. The administration processed an application and considered a proposal to rehabilitate displaced families on approximately 644 acres of land, indicating formal acknowledgement. However, the process stalled because the land fell under the forest department, which opposed de-reservation on ecological grounds. As a result, no approval or relocation was executed.

Relevant Laws and Policies

Bangladesh’s response to climate-induced displacement operates through a fragmented policy framework rather than a dedicated legal regime. The National Adaptation Programme of Action identifies large-scale displacement risks from sea-level rise and highlights resettlement as a potential adaptation strategy. The Bangladesh Climate Change Strategy and Action Plan (2009), particularly under its disaster management pillar, emphasizes rehabilitation and planned resettlement, often operationalized through cluster village approaches on khas land. Land redistribution is enabled through state control over khas land under the State Acquisition and Tenancy Act and related administrative mechanisms, while the Forest Act (1927) restricts conversion of reserved forest land without government approval, creating institutional conflicts in relocation planning. Implementation occurs through programmes such as the Ashrayan Project, which provides housing and livelihood support to landless and disaster-affected populations.

Sources

Source Type

Non-governmental organisation, Media, Academic

Source Title 1

As floods and erosion consume the river islands of Bangladesh, thousands are getting displaced

Source URL 1

https://scroll.in/article/1029942/as-floods-and-erosion-consume-the-river-islands-of-bangladesh-thousands-are-getting-displaced

Source Title 2

Erosion-hit Dhal Char people want rehabilitation on khas landhttps://www.observerbd.com/news/186222?

Source URL 2

https://www.observerbd.com/news/186222?

Data Confidence Level

High