North Lakhimpur, Assam, India | Water Resource Department, Assam
The river Brahmaputra has been the lifeline of northeastern Indian states for ages. This mighty river runs for 2880 km through China, India, and Bangladesh. Every year the Northeastern state of Assam experiences huge losses due to devastating floods caused by the river Brahmaputra. Some northern plains of Assam like Dhemaji, North Lakhimpur, Dhakuakhana and a few places of Barak Valley experience significant damage due to floods in the Brahmaputra Basin very frequently.
The high intensity of floods in the Brahmaputra River and the steep topography of the region makes the problem more complex and severe. To provide a safeguard against the frequent floods in the region, the banks of the river Brahmaputra near Lakhimpur were required to be protected at a few stretches while providing sustainable anti-erosion measures.
We, at TechFab India, suggested using TechRock™ GeoMattress (A Uniform Tubular Green Mattress) filled with sand (100mm post filling) on the river bank side slope. The work was carried out on the left bank of the Brahmaputra River for a total length of 700m (Approx.) where the river bank was dressed to a slope inclination of 2H:1V for the maximum protected bank height of 12.0m.
The solution implemented using TechFab’s TechRock™ GeoMattress protected the river bank thereby protecting the environment & sustainability of the communities at Dhemaji, Dhakuakhana of Assam.
The Brahmaputra River frequently causes devastating floods in Assam, severely impacting regions like Dhemaji, North Lakhimpur, Dhakuakhana, and parts of the Barak Valley. These floods damage infrastructure, agriculture, and communities, making sustainable river bank protection essential.
High-intensity floods during monsoon season.
Steep riverbank slopes prone to erosion.
Need for long-term, eco-friendly anti-erosion measures.
Protection of vulnerable communities and ecosystems along the river basin.
TechFab India proposed Tech GeoMattress, a uniform tubular green mattress filled with sand (100 mm post-filling). It was installed along a 700 m stretch of the left bank, dressed to a slope of 2H:1V, with a maximum protected bank height of 12 m.
Provides a flexible protective layer against hydraulic forces.
Controls erosion and sedimentation effectively.
Uses locally available sand, making it cost-effective and sustainable.
Adapts to flood pressures and sediment movement, ensuring long-term resilience.
Eco-friendly solution with reduced environmental footprint.
Faster and easier installation compared to boulders or concrete structures.
Cost-effective due to use of local materials.
Provides durable flood protection with minimal maintenance.
The project was successfully completed, with Tech GeoMattress effectively protecting the river bank. It ensured:
Sustainable flood mitigation.
Enhanced safety for communities in Dhemaji and Dhakuakhana.
Long-term resilience of the Brahmaputra’s ecosystem and infrastructure.
Tech GeoMattress supplied by TechFab India Industries Ltd.
