Premier inspects flood zone in northern WA

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Damage from once-in-a-decade floods in Western Australia's north will run into millions of dollars, Premier Mark McGowan says.

While floodwaters are receding around Carnarvon, work is only just beginning to repair roads and other infrastructure, while power has been restored to most properties.

On Tuesday federal Emergency Management Minister David Littleproud said the shires of Carnarvon, Upper Gascoyne and Derby-West Kimberley will be eligible for financial assistance through the Commonwealth-State Disaster Recovery Funding Arrangements.

"The Bureau of Meteorology reported that Carnarvon received more rain in 24 hours than it received for all of 2020, which has led to significant damage, in particular to the road network," Mr Littleproud said.

"The assistance being announced today will help cover the costs associated with the operational response and repairing damaged essential public assets."

Premier McGowan flew to Carnarvon on Tuesday to inspect the scene, describing the flood event as traumatic for locals.

WA had asked for federal disaster relief to help fast-track about $8.5 million in road repairs.

The premier said, fortunately, there had been no reports of deaths or serious injuries.

"Carnarvon is used to floods, but every time it happens obviously there's an element of danger," Mr McGowan said.

"Carnarvon is a very resilient community ... we'll work with the community to get these things fixed a soon as possible."

Up to 200 millimetres of rain has fallen in and around Carnarvon since late last week leading to flooding in the town's main street.

State Emergency Service volunteers received more than 50 calls for assistance and continued to work with some home owners because of inundated properties.

Most had now been able to return to the homes with the majority of the damage not considered significant.

Levee banks built to protect the town after the last major floods in 2010 had helped, although Emergency Services Minister Fran Logan said a review would be conducted into how well they performed.

"The levee system has really proved itself. While there might be some tweaks here and there, fundamentally it has held up," she said.

Ms Logan said some vegetable and banana growers impacted by the floods could be provided with financial assistance but it would take five to seven days to make a full assessment of the damage.

Fire and Emergency Services Commissioner Darren Klemm rejected suggestions emergency services were slow in responding to the floods and Mr McGowan said helicopters used to rescue those stranded by rising waters had swung quickly into action.

The premier said food supplies to the region remained adequate.

Meanwhile, a warning for minor flooding remained in place for the Kimberley and Pilbara districts on Tuesday as a tropical low moved across the region.

The Bureau of Meteorology said the low was tracking slowly west from the state's border with the Northern Territory.

It was expected to bring heavy rain, with falls of up to 70 mm on Tuesday and up to 150 mm on Wednesday.