Communities along the Milwaukee River in Ozaukee County have watched the water level continue to rise in recent days.
According to the National Weather Service, the river was about 12 feet high - one foot above flood stage - in areas like Cedarburg, Mequon and Thiensville Wednesday morning.
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The NWS expects the river to crest at roughly 14 feet sometime Thursday.
"It's remarkable. It's amazing," said David Silar, who added he's never seen the river this high.
"It shows you the power of nature," Silar also said.
Carol and Rick Fagan, who own a building along the river in Thiensville, said they've been closely monitoring the river's height to determine if they should protect their property with sandbags.
Rick Fagan said flooding in the area back in 2008 brought water right up to the building's walls.
"That would be a problem, if the water gets up to 14 feet this time," Fagan said. "It would probably be at my front door."
In Mequon, Shoreland Parkway and Shoreland Drive, just South of the Highland Road bridge, were closed off by barricades Wednesday due to standing water on the pavement.
"Right now, the river's all the way up into my flower bed," said Marlys Garman, who lives in that area.
She said, while her house sits on higher land than her backyard, she's worried about the possibility of water making its way into her basement.
"It's getting very bad at this point," Garman said.
But she added she and many of her neighbors know the risks of living on the river, and still enjoy it.
"It's a blessing to be able to live here," Garman said.