Dewatering subway lines

One thing that's different between a flood here and a flood there is there the water starts receding after a few hours.  Here it can take up to a month in some cases.

Of course we don't have this problem of getting it out of the tunnels.

While the authority said it could not predict when service might be restored, officials estimated that pumping water out from flooded under-river tunnels could take anywhere from 14 hours to more than four days. It is possible that the subway system will return at partial capacity as floodwaters are pumped out of the system and imperiled equipment is inspected for potential water damage.