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Flood Prone Area

40 mha

Area which can be given reasonable protection

32 mha

Area protected prior to 1954

3 mha

Area Protected till 2004

15.8 mha

 

                                                                

View Area Liable to Floods        (Source www:123eng.com)

 

Brahmaputra and Barak Basins
Surplus water is found in the basins of Brahmaputra and Barak Rivers and their tributaries cover the northeastern states, northern West Bengal, and Sikkim, Assam.In North West Bengal, the Teesta, Torsa and Jaldakha rivers frequently inundate large areas. The rivers in Manipur frequently spill over their banks.

 

Ganga Basin
In the Ganga basin, the flood problem is mostly in the areas on the northern bank of the Ganga River caused by the northern tributaries of Ganga. Uttar Pradesh, Bihar, and West Bengal are the worst affected states in the Ganga basin. In eastern Uttar Pradesh, the rivers that cause flooding include the Sarada, the Ghagra, the Rapti, and the Gandak besides the main Ganga River. In Haryana, flooding may take place along the Yamuna and the problem of poor drainage exists in some of the southwestern districts. In Delhi,the area along the banks of the Yamuna is flood prone. North Bihar suffers from floods almost every year due to spillage of rivers. The rivers, such as the Burhi

 

Gandak, the Bagmati, the Kamla and other small rivers, the Kosi in the lower reaches, and the Mahananda, spill over their banks causing considerable damage to crops and dislocation of life. High floods occur in the Ganga in some years, causing considerable inundation in Biharlarge scale devastation took place in Uttar Pradesh and Bihar due to high floods in the Ghaghra, the Rapti, the Gandak, the Kosi, the Mahananda, the Bagmati & Adhwara Group leading to loss of lives, dwellings, properties, installations, communication, and infrastructure facilities.. In south and central West Bengal, the Mahananda, the Bhagirathi, the Ajay,the Damodar, etc., cause flooding due to the inadequate capacity of river channels and tidal effect. In Rajasthan and Madhya Pradesh, the problem is not serious but these states have also experienced some isolated incidents of heavy floods in recent years.

 

Ghaggar River carries a huge quantum of flow during the monsoon period; about 150MCM of this can be utilized for recharge. Presently this water gets collected and retained in 19 natural depressions causing water logging problems in the adjoining low lying areas like Baropal, where water levels have risen from 50m below ground level to less than 5m below ground level. Judicious management of Ghaggar flood water would provide significant quantity of water for recharge.

 

Central India and Deccan Rivers Basin
In Orissa, damage due to floods is caused by the Mahanadi, the Brahmani and the Baitarni which have a common delta. When these rivers area in spate simultaneously, they cause considerable havoc. The deltaic districts are densely populated. The small rivers of Kerala, when in high floods, occasionally cause damage. Also there is the problem of mud flow from the hills, leading to severe damages.

 

In the central and southern parts of the country, floods are observed in the Narmada, the Tapi, the Godavari, the Mahanadi and the Krishna. There have been instances of floods in these rivers due to very heavy rainfall in their catchments, e.g., flooding of Hoshangabad (Narmada) in 1999. The Tapi and the Narmada occasionally carry high flows which affect areas in the lower reaches in Gujarat.

 

The delta areas of the Mahanadi, the Godavari and the Krishna on the east coast in particular and the coastal regions of Orissa, Andhra Pradesh and Tamil Nadu in general also periodically face flood problems in the wake of cyclonic storms.

 

Average Annual Flood Damage (1953 - 1999)  (Source : www.123eng.com)

 Total Damage

 Rs.13,400 million

 Area Affected  8.11 million hectare
 Crop Area Affected  3.57 million hectare
 Human Lives Lost  1579 Nos.
 Cattle Lost  95,000 Nos.