Archive · 16 Dec 2025
India Updates Seismic Zonation Map to Minimise Earthquake Risk
India has updated its earthquake map to better protect people from earthquakes.
The new map shows that a bigger area of India, including the Himalayas, is at higher risk.
This means more people and buildings need to be safer.
The map uses better science to predict earthquakes and helps builders make stronger structures.
The goal is to keep people safe and reduce damage when earthquakes happen.
The Himalayas are especially risky because the ground there is still moving and can cause big earthquakes.
The new rules will help cities and towns in the Himalayas build safer buildings and prepare for earthquakes.
India's updated seismic zonation map introduces a new highest-risk Zone VI for the Himalayan region.
61% of India's landmass, housing 75% of the population, is now under moderate-to-high seismic hazard risk zones.
The map uses the Probabilistic Seismic Hazard Assessment (PSHA) method for more accurate risk prediction.
The revised Earthquake Design Code, 2025, includes standards for both structural and non-structural elements to enhance safety.
The update aims to address India's seismic vulnerabilities and minimise socio-economic consequences of earthquakes.
- Who
- Bureau of Indian Standards (BIS)
- What
- Updated seismic zonation map and Earthquake Design Code, 2025
- When
- 2025
- Where
- India, particularly the Himalayan region
- Why
- To minimise seismic risk and enhance disaster preparedness
- New Zone Added
- Zone VI (highest seismic hazard category)
- Landmass Affected
- 61% of India's landmass
- Population Affected
- 75% of India's population
- Himalayan Belt
- Now classified under Zone VI
- Assessment Method
- Probabilistic Seismic Hazard Assessment (PSHA)
- Design Code
- Revised Earthquake Design Code, 2025 (IS 1893)
- Key Faults
- Main Central Thrust (MCT), Main Boundary Thrust (MBT), Main Frontal Thrust (MFT)
- Recent Earthquakes
- 159 earthquakes between November 2024 and February 2025