The Assam government has issued a flood alert after flash floods triggered by heavy rainfall in Arunachal Pradesh’s Lower Subansiri district caused a sharp increase in river discharge. Authorities warned that rising water levels from the upper catchment areas could affect several districts in Assam over the next 24 to 48 hours.
The flood wave is expected to impact Dhemaji, Lakhimpur, Biswanath, and Sonitpur districts before moving downstream. Emergency agencies, including the SDRF and NDRF, remain on standby, while residents in low-lying and flood-prone areas have been advised to stay alert and follow official safety guidelines.
Read More: Arunachal Flash Flood Damages NEEPCO Quarters
Key Facts
- State on Alert: Assam
- Trigger: Flash floods in Lower Subansiri district, Arunachal Pradesh
- Rainfall Recorded: 72.8 mm in Yazali within 24 hours
- Affected Project: Panyor Lower Hydroelectric Project (formerly Ranganadi Hydroelectric Project)
- Districts at Risk: Dhemaji, Lakhimpur, Biswanath, Sonitpur, and downstream areas
- Expected Impact Period: Next 24–48 hours
- Response Agencies: SDRF and NDRF
- Public Advisory: Avoid flooded areas and small boat travel
Heavy Rainfall in Arunachal Triggers Flood Alert in Assam
The Assam government has sounded a flood alert after intense rainfall in Arunachal Pradesh’s Lower Subansiri district triggered flash floods and significantly increased river discharge into downstream areas.
According to official reports, the situation developed after heavy rainfall in the upper catchment areas caused a sudden rise in water flow. Consequently, authorities warned that several districts in Assam could face flood-related impacts during the next two days.
Yazali Records Heavy Rainfall
Meteorological data showed that Yazali in Lower Subansiri district received 72.8 mm of rainfall during the past 24 hours.
Furthermore, the heaviest rainfall occurred between 6 a.m. and 9 a.m. on June 24. Officials reported particularly intense downpours between 6 a.m. and 7:30 a.m., which triggered flash floods and rapidly increased water levels in nearby rivers and streams.
As a result, authorities closely monitored river conditions throughout the day.
Hydroelectric Project Releases Excess Water
The flash floods affected the Panyor Lower Hydroelectric Project area, previously known as the Ranganadi Hydroelectric Project.
Following a sharp increase in inflows, project authorities opened one spillway gate to release excess water and manage pressure on the reservoir. Meanwhile, local reports from Yazali indicated damage to houses and infrastructure caused by floodwaters and debris flow.
Officials continue to assess the extent of the damage in the affected areas.
Several Assam Districts Face Potential Flood Threat
Authorities warned that the increased discharge from Arunachal Pradesh’s upper catchments could significantly raise water levels and flow velocity in the Brahmaputra River and its tributaries.
According to projections, the flood wave is likely to first affect Dhemaji, Lakhimpur, Biswanath, and Sonitpur districts. Subsequently, the water surge could move further downstream toward western Assam, including areas near Dhubri.
Therefore, district administrations have intensified monitoring efforts and preparedness activities.
Government Directs Preparedness Measures
In response to the developing situation, the Assam government directed district administrations and relevant departments to remain on high alert.
Furthermore, officials instructed local authorities to activate preparedness plans and closely monitor vulnerable locations. The government also emphasized the need for quick response measures in areas that may experience rising water levels.
As a precaution, authorities continue to track river conditions in real time.
SDRF and NDRF Kept Ready
The State Disaster Response Force (SDRF) and National Disaster Response Force (NDRF) have been placed on standby for immediate deployment if conditions worsen.
Additionally, emergency response teams remain prepared to conduct rescue, evacuation, and relief operations wherever necessary. Officials stated that maintaining readiness is crucial as weather conditions remain unpredictable across the region.
Consequently, emergency agencies are coordinating with district authorities to ensure rapid action if flooding occurs.
Residents Advised to Remain Vigilant
Authorities have urged residents living in low-lying and flood-prone areas to stay alert and follow official instructions.
Moreover, officials advised people to avoid entering flooded zones and refrain from traveling through waterlogged areas. Residents have also been cautioned against using small boats, as stronger river currents could pose serious safety risks.
The administration emphasized that public cooperation will play a key role in minimizing risks during the alert period.
Continuous Monitoring Underway
Government agencies continue to monitor rainfall patterns, river discharge levels, and weather forecasts across Assam and Arunachal Pradesh.
Furthermore, officials are sharing regular updates with district administrations to ensure timely decision-making. Authorities stated that they will take additional preventive measures if water levels continue to rise.
Meanwhile, disaster management teams remain prepared for any emergency situation that may emerge in the coming days.
Importance of Assam and Northeast India
The Brahmaputra River system is vital to Assam and the wider Northeast region, supporting millions of people through agriculture, transportation, and livelihoods. Therefore, sudden increases in river discharge from upstream areas in Arunachal Pradesh can significantly affect communities downstream. Timely warnings and preparedness measures are essential to reducing flood risks and protecting lives and property.
Questions and Answers
Why has Assam issued a flood alert?
Assam issued the alert after flash floods in Arunachal Pradesh caused a sharp rise in river discharge and increased the risk of flooding downstream.
How much rainfall did Yazali receive?
Yazali recorded 72.8 mm of rainfall during the last 24 hours.
Which districts may be affected first?
Dhemaji, Lakhimpur, Biswanath, and Sonitpur districts are expected to face the initial impact.
What action has the government taken?
Authorities have directed district administrations to remain on alert and activated preparedness measures.
Are emergency teams ready?
Yes. Both the SDRF and NDRF are on standby and ready for deployment if required.
What precautions should residents take?
Residents should stay informed, avoid flooded areas, refrain from using small boats, and follow instructions issued by local authorities.