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Flood & Erosion Protection is at Hand

Sustainable Flood Mitigation Strategies in India

Sustainable flood mitigation solutions and help with riverbank erosion in the Brahmaputra River require a holistic approach involving integrated river management planning and design.

Data and technology are vital to flood mitigation strategies in India. All issues and challenges pertinent to braided behavior, channel migration, horizontal instability, and high sediment load carried by high water discharge are to be addressed through the mathematical hydrodynamic, riverbed and bank erosion, and sediment transport model studies and satellite imagery databased approaches.

Geomorphic assessment, hydrological data, hydraulic data, geotechnical investigation and GPS survey (topography, cross-section etc.,) are to be integrated using Geographical Information System (GIS). The selection of appropriate technology depends on collected site data. In addition, watershed or catchment area management impact in the Brahmaputra is to be integrated in the study.

Four Control Points

Based on all available information, it appears that there are at least four major geological channel control points along the Brahmaputra in Assam: (1) Bessamora in Majuli, (2) Tezpur, (3) Pandu near Guwahati, and (4) Jogighopa near Goalpara. These points are holding the river around the present alignment. As such, the sustainable solutions will include:

  • Channelization of the river starting from the four identified geological control points.
  • Determination of other control points or establishment of two channel formations north of Dibrugarh.
  • Revisit all flood prone areas along the Brahmaputra and generate flood prone maps with priorities.
  • Alternative measures such as new embankment, raising, repairing and/or stabilizing existing embankments, and use of new materials such geo-tubes should be investigated and considered.

Design of flood control embankment should consider:

The Brahmaputra River | Donate to Brahmaputra Flood Relief
  • Efforts (Using Satellite Imagery and Mathematical Modeling) to Predict Future Behavior with Respect to Shifting and Erosion
  • Provision of Erosion Protection to Deflect or Forestall River Attack and Associated Embankment Failure
  • River Channel Improvement if Possible by its Cross-Sectional Area, Re-Grading its Banks, and Covering Those with Vegetation or Revetments

Pumping: There will be some areas where pumping offers the only possibility for timely disposal of flood water.

Be part of the solution. Become a member of my organization, the Core Professional Group for the Brahmaputra (CPGB). You can also donate to Brahmaputra flood relief.