Multiple choice

In case of flash floods, warnings for timely evacuation may not always be possible as they are floods which occur

  1. within three hours of the beginning of heavy rainfall

  2. within five hours of the beginning of heavy rainfall

  3. within six hours of the beginning of heavy rainfall

  4. within eight hours of the beginning of heavy rainfall
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

There are different types of floods, namely flash floods, riverine floods, urban floods, etc. Flash floods can be defined as the floods which occur within six hours of the beginning of heavy rainfall and are usually associated with cloud bursts, storms and cyclones requiring rapid localised warnings and immediate response to reduce damage. Wireless network and telephone connections are used to monitor flood conditions. In case of flash floods, warnings for timely evacuation may not always be possible.

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