There was a water-main break earlier this morning in the area just off Madison Square Park at 23rd Street and Broadway. The N, Q, and R lines have been evacuated, and witnesses described a burst of water that “flowed into the 23rd Street station and down the subway stairs like a waterfall.” Shake Shack in the park was forced to close, but no amount of water can stop the Shack, so now they’re up and running again. [Daily Intelligencer, Shake Shack/Twitter]