Distribution of flood prone areas
Large scale flooding in India is limited to a relatively small area - along the lower reaches of most rivers and along parts of the sea coast.india Updated: May 07, 2003 21:14 IST
Compared to drought, asmaller areais affected by large scale flooding. However the loss in terms of lives and property is much higher. Usually heavy rainfall combines with some other factor(s) to lead to destructive flooding.
Assam - Brahmaputra and Barak valleys
Manipur - central districts
Tripura - west
West Bengal - Duars, Hugli basin, areas adjoining Ganga and Damodar
Bihar - Ganga valley, Kosi valley
Orissa - central coastal districts, lower Mahanadi basin
Jharkhand - Damodar valley
|Causes of floods:|
Unusually high rainfall in a short period of time, which leads to high volume of run-offs.
Rivers or other water bodies overflowing their banks.
Excessive deforestation of hills can cause floods lower downstream.
Inadequate drainage facilities may cause water to stagnate.
Change in the course of rivers.
In the coastal regions, tropical cyclones too can cause flooding.
- Ganga floodplains, Ghaghra, Gomti, Sharda, Rapti basins
Punjab- Satlej-Ravi basin
Himachal Pradesh- valley
Jammu and Kashmir- Kashmir valley
- flash floods along Luni, Chambal
Gujarat- Lower Mahi, Narmada, Tapi
Maharashtra- lower Wainganga, Penganga
Karnataka - upper reaches of Tunga, Bhadra
Andhra Pradesh- lower reaches of Krishna, Godavari, north coastal districts
Tamil Nadu- Kaveri delta
Kerala- along hills in west flowing rivers