LANCASTER, Pa. -- About 1,000 people came out to the Slide The City event in Lancaster.
This is the second year the giant slip n' slide water party has come to the city.
The event travels all over the United States. Last year about 3,000 people attended the event in Lancaster, but this year turnout was much lower.
Officials said the thunderstorms may have turned some people away.
Chris Conran, the event director, said, "Day-of signups have been a little slower obviously because if you know people think thunderstorms are coming by they're not going to sign up. But we've had a pretty good turnout. There's been a steady flow of people all day long."
People who attended the event said they enjoyed the rain because it made everything more slippery.
A portion of the proceeds go to The Mix at Arbor Place, a non-profit organization that mentors children.