If you were in the subway during the big thunderstorm and hailstorm, you might have thought you got lucky and dodged the bad weather. But we all have to emerge from the subway eventually—and when storms dump a lot of rain in a short period of time, subway stations can become deluged.

For example, if you were to try to leave the First Avenue L train station, you would perhaps be better staying underground:

DO NOT TAKE THE BK BOUND L TRAIN FROM 1ST AVE @MTA pic.twitter.com/1HNmvK97yT — CR (@charcrea) July 17, 2018

And one very brave lady took off her shoes to wade through the river of God-knows-what:

There are also subway lakes:

Gorgeous new water fixture at Times Square @NYCTSubway pic.twitter.com/p7x3wUkizP — Kristen Martin (@kwistent) July 17, 2018

The subway waterfalls also magically returned:

And the subway waterfalls emptied into subway pools...

@mta @NYCTSubway you might want to cancel W service... All the train cars are flooded and are now swimming pools... Definitely a slipping hazard for passengers... pic.twitter.com/56aWmd2uM7 — Progressive Action (@progressiveact) July 17, 2018

... and rivers:

Update: stuck at QBP on the N train. There is a river forming in the car 8745. Good times @NYCTSubway #Stormin pic.twitter.com/KjHQf4pJvd — Paul Rosenberg (@PaulsRandomness) July 17, 2018

Yes, the MTA does know:

Severe weather is causing flooding in some areas across the system. Currently, we have no service on the 6 between 125 St and Hunts Point Av. We are battling station flooding on the L at 1 Av, at Times Sq, and on the 1 at Houston St. Please stay safe, NYC. — NYCT Subway (@NYCTSubway) July 17, 2018

The MTA pumps out 13 million gallons of water from the subway system on a dry day. Just take inspiration from this commuter (of the great April 16 rainstorm) and keep on keepin' on: