Windsor's downtown aquatic centre and Adventure Bay water park is causing parking problems for a nearby business.

The liquor store at the corner of University Avenue and Church Street has posted a sign warning swimmers to not use its free parking lot.

"I'm hoping the city comes up with an idea to direct people to a parking lot, the lots that are around the area, and hopefully notify people that you shouldn't park at businesses," said Dave Vanderkwaak, a manager at the University Avenue LCBO.

Vanderkwaak said the situation has been made worse by the weather. Piles of snow mean there are fewer places to park downtown than normal.