MADISON, Wis. (AP) -- The Wisconsin Dells Visitor and Conventions Bureau wants tourists to know that the popular destination spot remains open for business.

But visitors planning on staying on Lake Delton are being urged to check on their reservations before leaving.

The lake overflowed its banks and emptied on Monday, washing away three homes and damaging two others.

The visitors center has a message on its Web site and toll-free telephone line encouraging people not to cancel their vacation plans.

The $1 billion tourism industry in the Wisconsin Dells area attracts about 3 million people a year.

The convention bureau says 90 percent of the businesses are open. That includes all the area's 21 water parks.