What are cities use underground drainage systems?

Cities use underground drainage systems to help keep streets and homes dry during rain or storms.

Imagine your toy room has a little drainage system, it’s like tiny pipes under the floor that carry away water when you spill a glass of juice. In cities, there are big versions of these pipes underground, called sewers or drains, that help move water away from streets and buildings.

When it rains hard, water flows off the roads and into gutters, like the edges of your toy box that catch spilled juice. This water then goes down into big pipes underground, where it travels to a special place called a stormwater system or sewer, which might lead to a river, lake, or even a giant puddle far away.

Without these systems, streets would flood like your bathtub when the plug is out. People wouldn’t be able to walk, cars wouldn’t move, and homes could get wet, just like if you left your toy box in the rain without a cover!

So cities use underground drainage systems to keep everything dry and happy, even when it rains all day long!