Gulf of Bengal Depression (BOB 07) and its Impact

Meteorological Evolution

Originated as a low pressure area in early October over the west-central Bay of Bengal and deepened into a depression.

It moved north-northwestwards, bringing moisture over Odisha, West Bengal, and the Himalayan foothills.

Impacts and Hazards

Significant fatalities and damage in Darjeeling hills due to landslides (over 20 deaths).

Infrastructure damage to roads, bridges, disconnection of remote areas.

Agricultural losses due to inundation of paddy fields and soil erosion.

Human displacement, power outages, and disrupted transport.

Vulnerability Factors

Saturated slopes from pre-monsoon rains and Himalayan topography exacerbate landslide risk.

Inadequate early warning systems in hilly districts.

Poor slope management, deforestation, unplanned urbanization.

Policy and Mitigation Measures

Enhance local early warning and community-based disaster preparedness.

Slope stabilization, afforestation, terracing of hillsides.

Strengthening inter-state disaster risk management coordination (West Bengal, Sikkim, Uttarakhand).

Infrastructure resilience: disaster-proof roads, bridge designs that account for extreme flows.

Conclusion

BOB 07 underscores the urgency of climate adaptation in India’s vulnerable zones. Reactive relief is not enough — resilience must be built upstream through planning, early warnings, and sustainable land-use.