Which of the following statements are true about the National Disaster Management Authority (NDMA) recommendations on Chennai floods. (i) Expert Committee for water release decisions. (ii) Establishing Chennai AWS network for rainfall monitoring. (iii) Sharing of flood management best practices. (iv) Use of only satellite data for forecasting.
(i), (ii) and (iii) only
The study of the Chennai floods pointed to sudden reservoir releases, poor local rainfall data and weak coordination as the main gaps, and the recommendations were framed to close these gaps.
Statement (i) is true: decisions on releasing water from reservoirs such as Chembarambakkam were to be taken by an expert committee instead of being left to ad hoc judgement. Statement (ii) is true: a dense network of Automatic Weather Stations (AWS) in Chennai was recommended for real-time rainfall monitoring.
Statement (iii) is true: documenting and sharing flood-management best practices among agencies was part of the recommendations. Statement (iv) is false: forecasting is meant to combine satellite data with radar, ground stations and river gauges, not rely on satellite data alone.
So (i), (ii) and (iii) are correct. The choices that include (iv) accept a wrong statement, and the choice with only (ii) and (iii) leaves out the true statement (i).
(i), (ii) and (iii) only option is correct.
Important Questions from Natural Disasters
Who was the first geologist to devise an instrument used to detect an earthquake?
The mass movement of rock, debris or earth down a slope is referred to as:
What is the primary geological phenomenon responsible for generating the majority of destructive tsunamis?
Risk mitigation methods such as constructing retaining walls and surface drainage control works are associated with which disaster?
Earthquakes which are destructive are those whose magnitude on the Richter scale is
