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View Area Liable to Floods (Source www:123eng.com)
Brahmaputra and Barak Basins
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 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.