The researchers from the Indian Institute of Technology Bombay (IIT Bombay) have devised a new metric or measure that can predict whether a city is prone to rain- or tide-based flooding.
- The metric has been named as the ‘Tide–Rainfall Flood Quotient’.
- The new method helped classify some selected regions into ‘storm-tide dominated’ or ‘pluvial (rainfall) dominated’ regions.
- The metric can help disaster management experts in framing better flood risk management systems directed towards long term planning.
- Researchers pointed out that for storm-tide dominated regions, severe flood hazard can be alleviated by building coastal defence structures such as closure dams, tide breakers, and storm-surge barriers at appropriate locations.
- The tide and surge forecasting systems in these regions should be equipped with state-of-the-art ocean circulation models.
- They have suggested that for pluvial dominated regions, structural measures such as rainwater storage structures, lakes, and detention basins should be prioritised in the flood management plans.
(Source: The Hindu)
