A path, channel, or designated route through which water or liquid drains away from an area, such as a ditch, creek, or pipe system.
Compound noun: 'drainage' (the process of draining) + 'way' (a path or route). This is a modern descriptive term combining two concepts to name infrastructure dedicated to water management.
Drainageways are hidden in plain sight—every neighborhood has them, but most people don't notice them until they fail during heavy rain. Engineers design these invisible highways for water, and their importance becomes obvious only when cities forget to maintain them.
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