Authorities have warned of rising water levels in the Brahmaputra and its tributaries as floodwaters from Arunachal Pradesh move downstream towards several Assam districts.
Guwahati: The Assam government has issued a flood alert after flash floods triggered by intense rainfall in Arunachal Pradesh’s Lower Subansiri district caused a sharp increase in river discharge, raising concerns of downstream flooding over the next 24 to 48 hours.
According to official information, Yazali in Lower Subansiri recorded 72.8 mm of rainfall during the past 24 hours, with the heaviest downpour occurring between 6 am and 9 am on June 24. Meteorological assessments indicated torrential rainfall between 6 am and 7.30 am, resulting in flash floods and a sudden surge in water flow across upper catchment areas.
The flash floods affected the Panyor Lower Hydroelectric Project area, formerly known as the Ranganadi Hydroelectric Project. Following a sharp rise in inflows, authorities opened one spillway gate to release excess water. Reports from Yazali also indicated damage to houses and infrastructure due to floodwaters and debris flow.
Officials warned that the increased discharge is likely to cause a significant rise in water levels and flow velocity in the Brahmaputra and its tributaries across Assam. The flood wave is expected to first impact Dhemaji, Lakhimpur, Biswanath and Sonitpur districts before moving further downstream towards Dhubri.
District administrations and line departments in vulnerable areas have been directed to remain on high alert and undertake preparedness measures. Emergency response teams, including the SDRF and NDRF, have been kept ready for deployment.
Residents living in low-lying and flood-prone areas have been advised to remain vigilant, avoid entering inundated areas and refrain from travelling by small boats as river currents are expected to strengthen considerably.
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