@Philly H2O Blog

All posts tagged: Flooding

How PWD is preparing for more extreme weather: As extreme weather becomes more common, preparing for it becomes more important

September 18, 2026  |  PWD Office of Watersheds
A pair of photos of flooding in West Philadelphia, showing submerged cars in an intersection surrounded by street lights and street signs with houses in the background. On the right, a policeman and a resident walk through floodwater.

Like other cities around the world, Philadelphia is seeing changes in its weather and climate patterns. According to the Philadelphia Water Department’s Climate-Resilient Planning and Design Guidance engineers, a storm that once had a 1-in-100 chance of happening each year (a “100-year storm”) could have a 1-in-7 chance by the end of the century, assuming […]

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