Communities across Wales were hit by Sunday's deluge and North Wales Fire and Rescue Service said they received 30 calls.
In Wrexham, homes and streets were hit in Llay, Rossett and Gresford.
Residents in at least four properties on Llay New Road are being rehoused while repairs are carried out.
Brother and sister Peter and Mandy Jones spent Monday surveying the damage at their father's home.
He is being rehoused for the next several months until repair work is completed.
They described the situation as "distressing" saying cars passing through Sunday's floodwater sent waves of water into their father's home on Llay New Road.
Wrexham council said it was assisting tenants at five council houses in Llay and two in Rossett and knew of other private homes affected by the floods.
In Pembrokeshire residents described an "ocean of water" after a river burst its banks near homes in Narberth.
And in Whitland, Carmarthenshire, five people were rescued by boat after their car was submerged in flood water.

The step may make some important new medicines more affordable in the developing world, by leaving the way clear for generic companies to make cheap copies of GSK's drugs.
GSK said it would adopt a graduated approach linked to a country's wealth.
It said it would still seek full patent protection in richer nations.
The company says the changes it is making should help people who currently cannot afford life saving medicine.
In the world's poorest countries, it will allow other companies to make generics or cheaper copies of its medicine.
In what it calls lower middle income countries it will continue to file patents but will grant licences to generic manufacturers in exchange for a royalty.
Pharmaceutical firms are often criticised for not making their medicines affordable to people in developing countries, but the firms have argued that patenting their products is the only way to ensure research for new treatments can be funded.
One exception is HIV/AIDS, where the price of drugs for people in many poor nations who are living with the condition have been drastically reduced.
Sufferers of other serious illnesses though, for example, cancer, often cannot afford the drugs to treat them.
GSK says changes to the way it patents drugs will make its next generation of cancer drugs more affordable.
Recent figures showed GSK's sales rose 2% to £6.29bn in the quarter.
However, the company fell to a pre-tax loss of £416m compared with a profit of £531m for the same period in 2014.
New treatments for HIV, respiratory conditions and meningitis vaccines had sales of £682m in the quarter.

The victim, named by police as Ali Nasrollahi, 22, was found collapsed in Barnet on Tuesday afternoon.
Mr Nasrollahi, who was found at the junction of Woodside Grange Road and Grangeway, was treated by paramedics for a single stab wound but died soon after arriving at hospital.
Police have launched a murder inquiry and have appealed for witnesses to come forward. No arrests have been made.
Det Insp Julie Willats said: "We know that the victim had driven to Woodside Grange Road with one of his friends and met up with another friend, who had also driven there.
"At some stage, the victim interacted with a group of up to four suspects, during that interaction we believe he was stabbed.
"The group of suspects then ran off down Grangeway and into an alleyway that leads on to Woodside Avenue."
The victim's friend Mohamed Musalam said: "I'm shocked... I had to call 10 people to confirm because it was just unreal.
"He didn't deserve it at all, he wasn't that sort of a person where he hangs around with the wrong crowd or anything like that.
"He was a happy guy, the sort of guy that comes into a group and makes everyone laugh. I am heartbroken."
Officers are carrying out a forensic search in the area.
The clean-up operation is continuing in Wrexham after heavy rain caused flooding.
[NEXT_CONCEPT]
UK drugs manufacturer GlaxoSmithKline has said it will not file patents for its products in the world's poorest nations.
[NEXT_CONCEPT]
A man has been stabbed to death in a street in north London.