Some parking lots looked more like rivers.
Jennifer Potts, who lives in Brookside Apartments, says people couldn't leave the complex because of rushing water.
"People are trapped," Potts said. "I mean, this is the only way out of this apartment complex."
St. Matthews got more than three inches of rain in just a few hours.
Some residents woke up to find their most prized possessions damaged.
"I picked the worst spot I guess," Baxter Waldrop said about where he parked his Mustang. Water filled the car at the Oxmoor Apartments, where he was visiting a friend.
"Inside my car, the water was up to my seats," said Hannah McClain, who lives in that apartment complex.
WDRB News spotted one man using a canoe for transportation. Others decided to walk.
"That water kind of tries to knock you over if it gets too deep," said Ian McCollum, after braving the water to leave the Mallgate Apartments.
It wasn't a smooth ride for everyone who was able to get on the road. MetroSafe says it got 25 calls for water rescues Sunday morning.
The storm also caused power outages. LG&E crews worked to turn the lights back for hundreds of customers throughout the day.
MSD says it got about 150 calls for service.
Daryl Schomaker showed us how water crept into his place at the Oxmoor Apartments.
"You never know how good your insurance is until you have to use it," he said. "Well, you know what? We're gonna find out."
And flooding led to canceled services at Beechwood Baptist Church Sunday morning.
"I've been here 27 years, and I've never seen it this bad," Pastor Robert Blackburn said.
There's more rain in the forecast though.
"There's nothing we can do about it except when it stops raining start getting mops and shop vacs and things like that to get it cleaned up," Blackburn said.
So as clean up and recovery is underway, many are also bracing for more.