The effectiveness of the Flood Early Warning Systems developed by NESAC at Umiam near here has increased from a modest 25 per cent in 2009 when it was launched to nearly 85 per cent last year, they said.
"The percentage of successful and useful flood early warnings have been increased from a mere 25 per cent in 2009 to 84 per cent last year," NESAC director Dr S Sudhakar told PTI.
The early warnings issued by NESAC provides information about the revenue circles and the probable villages that may be affected due to flood enabling the administrative machinery to prepare and response to the likelihood of the flood.
FLEWS which covered 15 flood prone districts in Assam, has added seven more district prone to flood while another five districts including Kamrup were partially covered under the system, the NESAC official said.
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The Centre launched the system in line with the recommendation of the National Flood Commission which reported that 40 million hectares in India is prone to flood bringing with it risks to human, livestock and agriculture.
Synoptic rainfall advisory is also part of the system in which high definition satellite images of the cloud formation, motions and qualitative precipitation estimation which also helps in identifying the affected areas, one of the scientists working on FLEWS, he said.
The study was undertaken by the centre under the North Eastern Regional node for Disaster Risk Reduction which was well received by respective forest departments, Dr Sudhakar said.