Urban areas often experience rapid waterlogging and flash flooding during heavy rain. What is the main…

Urban areas often experience rapid waterlogging and flash flooding during heavy rain. What is the main structural reason for this?
  1. City buildings absorb too much atmospheric moisture
  2. Concrete surfaces prevent water seepage and drainage systems get blocked by garbage
  3. Urban soil absorbs water much faster than forest soil
  4. High-rise buildings block clouds from moving away

Solution

Paved concrete surfaces block rainwater infiltration into soil, and choked drains force water to rapidly accumulate on streets.

Asked in: Homi Bhabha Practice

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