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The Government of India has received a credit from the International Development Association (IDA) towards the cost of the “Bihar Kosi Flood Recovery Project” (BKFRP) for the damage caused by flood due to breach in the Eastern Afflux Bund of Kosi in 2008. Government of Bihar (GoB) has constituted a society known as “Bihar Aapda Punarwas Evam Punarnirman Society” (BAPEPS) under the Societies Registration Act 1860 as a separate legal entity to implement the World Bank financed “Bihar Kosi Flood Recovery Project”. Water Resources Department (WRD), Govt. of Bihar is the implementing agency for implementing the one of the component of this project, i.e. “Strengthening Flood Management Capacity”. Embankment Asset Management System (EAMS) for Kosi River is one of the important projects amongst them which is being implemented by the consultant LEA Associate South Asis Pvt. Ltd.
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Mission |
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Scheme identification should be very selective and well considered, supported by adequate investigation. For identification of proposed flood protection works, following points may be kept into consideration:
The zone exactly affected by erosion.
Morphological conditions of river flow in the reach b/w 5 km upstream and downstream of affected reaches.
Bank lines for previous 5 years for assessing erosion trends and causes.
River regime plan showing both bank based on latest satellite imageries.
Losses incurred in the past due to the erosion at the site.
Assessment of long term and short term effects of the proposed anti-erosion work on upstream, downstream and opposite bank.
The location and effects of flood management works already executed in the vicinity, whether existing or damaged.
Bank to bank river cross sections.
The initial response in tackling the erosion should be towards channelizing the river in central.
Impermeable spur or bed bar should never be constructed in isolation.
Use sheet piles instead of launching apron of boulders for toe protection especially in critical erosion sites.
Construction of bed bars should preferably be of submerged.
Use of Geo textile bags filled with sand has emerged and should be adopted as substitute for boulders.
For raising & strengthening of embankment schemes, justify by giving details of observed incidences of over topping or undesirable encroachment.
Soil characterization of the river stability of the river banks is essential to successful bank erosion protection and construction of good quality stable embankments.
Availability of bed material data and suspended silt very important for realistic planning of flood/erosion protection works.
Drainage sluices are recommended to be made an integral part of embankments to prevent water-logging in the protected areas.
Any new work in the vicinity of any on-going flood management should be prepared only after full implementation of the ongoing work.
Stress has to be laid on improving the existing natural drainage system in the flood plains.
The adequacy of existing sluices and drainage channels should be reviewed in areas suffering from drainage congestion.
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Vision |
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To disseminate the information related to status of the flood management structures and flood situation and action needed to meet the situation by the concerned high official online for flood management action through various online modules like alerts, SoP Monitoring and Asset Monitoring etc.
To develop a well maintained and thorough record archives and documents now onwards that can be used during operation and maintenance of the embankment, for emergency response during flood, in flood risk analysis and embankment performance assessment. Also to encourage community participation during embankment surveillance.
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