Quake risk beneath the plains: IIT-Kanpur study flags Liquefaction threat in Kanpur, Prayagraj

A sweeping 17-year investigation by Indian Institute of Technology‑Kanpur has raised fresh seismic alarms for parts of Prayagraj and surrounding regions, warning that a strong earthquake could trigger severe ground failure beneath densely populated neighbourhoods.

Led by civil engineering professor Nihar Ranjan Patra, the research pinpoints the alluvial belt along the Ganga river as especially vulnerable to soil liquefaction — a phenomenon in which water-logged earth temporarily behaves like liquid during intense tremors, causing buildings to tilt, sink or collapse and cracking roads, tracks and pipelines.

The team examined soil samples gathered over nearly two decades from Gujarat, Haryana, Uttar Pradesh and Bihar, drilling boreholes up to 80 metres deep in select pockets — far beyond standard testing depths. In several locations, the top 8–10 metres were found to be loose, sandy and saturated, conditions primed for dramatic destabilisation if a quake of magnitude 6.5 or higher strikes.


Neighbourhoods such as Bithoor, Mandhana, Panki, Barra and areas around IIT-Kanpur showed heightened susceptibility, while parts of Varanasi displayed similar soil behaviour. Though the region falls largely within moderate-to-high seismic categories, scientists caution that the wider Indo‑Gangetic plains remain inherently fragile because of deep sediment layers and their proximity to tectonic activity along the Himalayan belt.

The study warns that rapid urban growth, high-rise construction without proper soil analysis and lax enforcement of building codes could magnify destruction. Older structures, especially those not designed to withstand seismic shocks, face the gravest danger.

Patra urged mandatory geotechnical testing before construction, strict compliance with earthquake-resistant design norms and systematic retrofitting of hospitals, schools and government buildings. Earthquakes may strike without warning, the researchers note, but rigorous planning and preparedness can sharply reduce casualties and economic losses.