Floods

img txtTo keep watch on the flood situation in the country through hydrological and meteorological information from various sources, mapping & monitoring of major flood/cyclones with the satellite data from optical and microwave satellites, Generation of flood maps showing flood. India is one of the worst flood-affected countries in the world and accounts for one fifth of global death count due to floods. Floods occur mostly during southwest monsoon starting from June to September. India is one of the worst flood-affected countries in the world and accounts for one fifth of global death count due to floods. Floods occur mostly during southwest monsoon starting from June to September. About 40 million hectares of land in the country is prone to floods as per National Flood Commission. The annual average of land area and crop area affected due to flood is about 18.6 million hectares and 3.7 million hectares respectively. The most flood-prone areas in India are the Brahmaputra, Ganga and Meghana River basins in the Indo-Gangetic-Brahmaputra plains in North and Northeast India, which carry 60 per cent of the nation's total river flow. ISRO/DOS is playing a vital role in supporting the flood management activities, by providing space as well as aerial remote sensing based services and products. Using satellite data from Indian Remote Sensing Satellite (IRS) System and from foreign satellites, the impact of floods in the country is being assessed for the past one decade operationally. The various services are listed below:

  • Near Real Time Flood Mapping and Monitoring
  • Flood Damage Assessment
  • Flood Hazard Zone Mapping
  • River Bank Erosion Mapping
  • Mapping changes in the river course

2015

2014

2013

2012

Flood Hazard Zonation Atlas of Bihar.

NRSC/ISRO has taken up development of Flood Hazard Zonation Maps using satellite data towards Disaster Risk Reduction, in addition to flood response services through Decision Support Centre (DSC) under ISRO-DMS Programme. Over a period of time, ISRO has created a repository of large data pertaining to the floods in different areas of the Country. These historical datasets, generated by NRSC/ISRO, are useful for identification of the flood-prone areas and risk assessment. NRSC/ISRO has prepared district wise flood hazard zonation atlas for Bihar state using the available historical satellite datasets spanning over 13 years and intra annual flood variations from 1998 to 2010.he flood hazard maps prepared from satellite data were peer reviewed by a Committee constituted by National Disaster Management Authority (NDMA), which includes CWC (Central Water Commission), IMD (India Meteorological Department) and BSDMA (Bihar State Disaster Management Authority). The flood hazard maps were also validated on ground by the BSDMA through its district administration. Similar efforts are on the way for other states like Orissa, West Bengal and Uttar Pradesh etc. Atlas

Floods