Assam Moves Ahead With Flood Plain Zoning Bill to Regulate Riverbank Development

Assam Chief Minister Himanta Biswa Sarma on Thursday reviewed progress on the proposed Assam Flood Plain Zoning Bill, which the state government plans to introduce as part of a broader strategy to strengthen flood-risk management.

The proposed legislation is intended to regulate land use along river channels by creating designated prohibited and restricted zones, while allowing authorities to manage development according to levels of flood risk.

The Bill is proposed to be tabled during the next session of the Assam Legislative Assembly.

Prohibited and Restricted Zones Planned

Under the proposed framework, flood-prone areas along rivers would be classified according to their vulnerability.

Certain areas could be designated as prohibited zones, where development would face strict restrictions, while other locations could be placed under controlled or restricted development categories.

The broader objective is to reduce construction and settlement in areas where natural flooding poses a high risk to lives and property.

Floodplain zoning is recognised as a non-structural flood-management measure. The Union Ministry of Jal Shakti circulated updated floodplain zoning guidelines to states and Union Territories in August 2025 to support scientific assessment and regulation of vulnerable areas.

Flood Zoning Authorities to Be Created

The Assam Flood Plain Zoning Bill is also expected to provide for Flood Zoning Authorities at different administrative levels.

These bodies would be responsible for identifying flood-prone areas, enforcing zoning restrictions and coordinating implementation across rural and urban regions.

Assam’s existing disaster-management strategy already calls for floodplain zoning, vulnerability mapping and the preparation of zonation maps using remote sensing, GIS and GPS technologies.

Rural and Urban Areas to Be Covered

The proposed legislation is intended to cover both rural settlements and urban areas.

This is particularly significant in Assam, where flooding and riverbank erosion affect large parts of the state.

The Assam Water Resources Department says about 31.05 lakh hectares have been identified as flood-prone, while existing structural measures have provided protection to around 16.50 lakh hectares.

Himanta Calls for Protection of ST and SC Communities

During the review, Sarma directed officials to ensure that implementation of the proposed zoning framework does not adversely affect Scheduled Tribe and Scheduled Caste communities that have traditionally lived along riverbanks.

The government indicated that their land rights, livelihoods and long-standing habitation patterns would have to be considered while identifying restricted zones.

This aspect is particularly important because floodplain regulation can affect communities whose homes, agriculture and livelihoods are closely linked to rivers.

Aim to Give Rivers Space During Floods

A central objective of the proposed legislation is to prevent excessive development in areas naturally used by rivers during periods of high flow.

Officials said allowing rivers sufficient space to follow their natural courses could reduce damage caused when floodwaters encounter dense settlement or construction.

Parliamentary committees have previously noted that expanding habitation, construction and encroachment in floodplains can significantly increase the damage caused by floods.

Assam Has Long Faced Severe Flood Risk

Flood management remains one of Assam’s major development challenges.

The state government currently relies on measures including embankments, drainage systems, sluices, erosion-control works, flood forecasting and community-based preparedness.

Assam’s Water Resources Department acknowledges that much of the work undertaken historically has focused on immediate or short-term protection rather than permanent solutions.

Community-based programmes have also been introduced to improve early warnings, preparedness and local participation in flood-risk reduction.

Bill Expected in Next Assembly Session

The Sarma government now plans to finalise the proposed legal framework before placing it before the Assam Legislative Assembly.

If enacted, the Assam Flood Plain Zoning Bill would introduce a more formal mechanism for regulating land use in vulnerable river corridors while attempting to balance disaster-risk reduction with the rights and livelihoods of existing communities.