I places in Asia that have monsoon weather one typically walks UP a few steps before going down into a subway station (China/Taiwan/Hong Kong/etc)- for example this MTR entrance in Hong Kong:<p><a href="https://goo.gl/maps/MeiQU9HAKo5NgFAKA" rel="nofollow">https://goo.gl/maps/MeiQU9HAKo5NgFAKA</a><p>This is a great solution to short term small floods, but wont protect you against longer term, or waist deep+ street flooding like we saw in Henan last week.
Warsaw (Poland) uses the bulkheads which were designed originally during the cold war era to provide an atomic shelter for the civilians. Fortunately, they weren't ever used for the original purpose, but they are now used as a prevention during the storms.<p>- Original article in Polish: <a href="https://www.komputerswiat.pl/artykuly/redakcyjne/grodzie-przeciwatomowe-uratowaly-warszawskie-metro-jak-dziala-system-ktory-pozwala-na/bksflxy" rel="nofollow">https://www.komputerswiat.pl/artykuly/redakcyjne/grodzie-prz...</a><p>- Just the video showing the partition: <a href="https://streamable.com/390cxk" rel="nofollow">https://streamable.com/390cxk</a>
The Zhengzhou metro, one which got flooded, has blast doors in, and in between stations like most metros in the Bloc.<p>The anger now is because despite millions spent on those blast doors, they were simply not activated. The shift chief of the metro was too afraid to stop the metro.<p>The same for its very powerful flood defence pumps.
Newer systems being built in Asia are avoiding subways/underground systems and preferring elevated systems. In fact during a major flood, the elevated railway was pretty much the only servicing transporting system in effect.
> Sandy had made a mockery of the largest subway system in the world<p>Is the New York subway really the largest subway in the world? I thought that trophy went to subways in Tokyo or Seoul.
How will this hold up in 12 years?<p><a href="https://www.nasa.gov/feature/jpl/study-projects-a-surge-in-coastal-flooding-starting-in-2030s/" rel="nofollow">https://www.nasa.gov/feature/jpl/study-projects-a-surge-in-c...</a>
We can't change the past so have decades to centuries of climate change to handle, but we can do a lot more to stop future contributions to climate change.<p>The biggest effect anyone can have, beyond fewer kids, less meat, and flying less, is learning to lead others, which multiplies our effects. Of course, to lead others we have to lead ourselves first, which means fewer kids, less meat, flying less, and all those, as means to the end of leading others, especially CEOs and elected officials.
I thought the walls were the major variable and relatedly how well the earth blocks water in addition to well the local presence. The cost of any street opening subway is needing some pumping as even if you have over-awnings gravity brings rainwater down and it is rare that a city large enough a subway makes sense is away from bodies of water.