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Your city does not flood because it rained more. It floods because the water has nowhere left to go.

Architecture

Your city does not flood because it rained more. It floods because the water has nowhere left to go.

3 Sept 2026 · 9 min read

The same rainfall that a city absorbed thirty years ago now puts it under water. Very little of that is about the sky. Here is the hydrology of urban flooding — runoff, design storms, lost wetlands — and why building bigger drains often makes it worse.

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