This report describes the Burhi-Gandak river basin and its flood risks;
it proposes plans for reducing those risks using a mixture of structural
and non-structural measures. The report describes geophysical and
hydrological characteristics as well as recent flood history.
Importantly, it does so from a macro-perspective as well as from the
perspective of communities living in the flood-prone areas. A flood risk
assessment is given of the current situation as well as under potential
climate change conditions for the years 2040 and 2080.
Subsequent chapters elaborate the entire gamut of existing and possible
future flood mitigation measures. As well as embankments, dams and river
offtakes, non-structural elements such as flood forecasting, land use
management, community level measures and agricultural adaptations are
discussed. The urban environment is also taken into consideration, with
drainage designs and costings described. Last but not least, the
economic and environmental considerations of all these interventions are
presented. The final chapter spells out the necessary improvements in
institutional and community activities that would create a better
enabling environment for flood management.
It is hoped that this integrated approach will help to mitigate the
recurrent flood problems in the Burhi-Gandak basin, for the benefit of
millions of people living in these fertile but yet hazardous
environments. The report makes no decisions, but offers choices and
options which work best when implemented in harmony; not all may be
economically or socially feasible. This requires further study and
discussions among stakeholders, and it is hoped that this report may
assist in these discussions.
Anon. Operational Research to Support Mainstreaming Integrated Flood Management in India under Climate Change - Vol. 3: Basin Flood Management Plan Burhi-Gandak, Bihar. ADB, Manila, Philippines (2015) 91 pp.
Operational Research to Support Mainstreaming Integrated Flood Management in India under Climate Change - Vol. 3: Basin Flood Management Plan Burhi-Gandak, Bihar