China's sponge citiesInstead of building barricades to water, they want to absorb and release the wa

Aug 19, 2021
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China's sponge cities

Instead of building barricades to water, they want to absorb and release the water when needed.

How it's done usually is combining grey infrastructure like drainage and water treatment with green spaces.

People also like to go to the green spaces to use them. Trees, elevated walkways, etc.

They also use some bioswales, which are several KMs in length now. They're grooves water can seep into and go down into the earth rather than enter drainage systems.

They also use permeable road surfaces. Polyurethane binders combined with gravel or stones let water through.

These are all designed to deal with regular heavy rain, and aren't as useful for extreme weather events.

The US and Russia have also done sponge city stuff, but not to the same level as China.

#China
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<div><b>China's sponge cities</b></div><div><br></div><div>Instead of building barricades to water, they want to absorb and release the water when needed.</div><div><br></div><div>How it's done usually is combining grey infrastructure like drainage and water treatment with green spaces.</div><div><br></div><div>People also like to go to the green spaces to use them. Trees, elevated walkways, etc.</div><div><br></div><div>They also use some bioswales, which are several KMs in length now. They're grooves water can seep into and go down into the earth rather than enter drainage systems. <br></div><div><br></div><div>They also use permeable road surfaces. Polyurethane binders combined with gravel or stones let water through. <br></div><div><br></div><div>These are all designed to deal with regular heavy rain, and aren't as useful for extreme weather events. <br></div><div><br></div><div>The US and Russia have also done sponge city stuff, but not to the same level as China.<br></div><div><br></div><div><a href="http://landandseajournal.com/post/hashtag/China"><a href="http://landandseajournal.com/post/hashtag/China">#China</a></a> <br></div>
China's sponge cities

Instead of building barricades to water, they want to absorb and release the water when needed.

How it's done usually is combining grey infrastructure like drainage and water treatment with green spaces.

People also like to go to the green spaces to use them. Trees, elevated walkways, etc.

They also use some bioswales, which are several KMs in length now. They're grooves water can seep into and go down into the earth rather than enter drainage systems.

They also use permeable road surfaces. Polyurethane binders combined with gravel or stones let water through.

These are all designed to deal with regular heavy rain, and aren't as useful for extreme weather events.

The US and Russia have also done sponge city stuff, but not to the same level as China.

#China

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