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I don't know about NYC but in general a sea wall could hold back a high tide. A lot of coastal cities flood when there is high rainfall coinciding with a high t
by discreteevent 3y ago
I don't know about NYC but in general a sea wall could hold back a high tide. A lot of coastal cities flood when there is high rainfall coinciding with a high tide. When the tide is low the rain just drains into the river and out to sea.
- lxgr 3y agoIn this case though, as far as I can tell it really was mostly a lot of rain at once, i.e. too much for sewers to drain to the sea to prevent flooding. I don't think a sea wall could improve this; only better storm drains could. I think this was different for Hurricane Sandy, where a storm tide was actually pushing in water from the sea/rivers, which is the scenario where a sea wall would help. And I suppose often it's a bit of both – storm drains stop working once the sea level is too high.