First Minister Carwyn Jones wants flood defence checks
Flood defence schemes will need to be assessed to see if they will be able to cope with bad weather in the future, First Minister Carwyn Jones has said.
He has been visiting parts of north Wales which have been hit by flooding including Llanrwst in Conwy county.
Mr Jones was also due to visit part of the A55 dual carriageway which flooded causing "chaos" on Boxing Day.
It was closed at Bangor on Saturday, along with A5 routes, effectively cutting off north-west Wales.
"The level of flooding we're seeing is at a level that's never been seen before," Mr Jones told BBC Radio Wales.
"We have to deal with that and Natural Resources Wales have to look at whether the schemes that are in place are going to be sufficient for the future."
He added: "We had more rain in the north of Wales than the north of England did and we were less affected.
"The people who were affected, it was awful for them, let's not try and minimise that. But the defences that we had in place held in the main - yes, there were some areas where that didn't happen.
"But the big challenge is, and this is what the scientists are telling us, is trying to predict where flooding will happen."
The first minister also visited Beaumaris on Anglesey, where the main route into the town has been closed by a landslide.
There was also widespread flooding over the Christmas weekend, as the castle moat in the town overflowed.
Rhun ap Iorwerth, Plaid Cymru AM for the island, called on Mr Jones to take immediate action over flooding.
"He should start by convening an emergency summit, bringing together stakeholders including the local authorities, Natural Resources Wales and government officials to discuss how we can adapt to cope better with instances of extreme weather," he said.
Two flood warnings are in place for the Lower Dee Valley in Wrexham and Abergwili in Carmarthenshire.
Check if this is affecting your journey
On Wednesday, Storm Frank brought heavy rain and winds of up to 75mph (120km/h), leading to more than 1,400 properties losing power across south Wales.
While the worst of the storm has passed, there were still problems on Thursday morning.
In Powys, about 160 homes had power cuts while replacement buses served Arriva Trains Wales services between Llandudno Junction and Blaenau Ffestiniog due to flooding.
Live flood warnings from Natural Resources Wales, the Environment Agency and the Scottish Environment Protection Agency
Tap here for up-to-date flood information.