TIDE–RAINFALL FLOOD QUOTIENT

Jan. 5, 2021

To understand if a coastal city is more prone to floods caused by tidal events or extreme rainfall, a team from the Indian Institute of Technology Bombay devised a new metric or measure called the Tide–Rainfall Flood Quotient.

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Using the past rainfall data, tidal data, and topography of the region this framework can be applied to pinpoint the major factor at play.
The team selected three geographically diverse flood-prone coastal regions – Mithi Catchment in Mumbai, Maharashtra, Jagatsinghpur District in Odisha, and Greater Chennai Corporation in Tamil Nadu to test their new metric.
The new method helped classify these 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.

Source : The Hindu