As much hate as the subway gets when they get shut down from the rain a little context yields a lot more understanding: "We move 13 million gallons of water a day when it’s not raining." Mind boggling that any of it works at all.
http://www.nytimes.com/2009/08/01/nyregion/01hot.html
"One reason for the record-breaking low temperatures was the record-breaking rainfall and accompanying cloud cover. The deluge of more than 16 inches (twice the average amount) made it the second wettest June and July on record, edging 1928. The wettest June and July was 1975, with more than 19 inches."
(First reference I could Google up.)