Prime Minister Anthony Albanese is in Kimberley region to see first-hand the devastation caused by unprecedented flooding.

Flood victims in Western Australia are now able to access disaster relief payments and other support via joint federal-state arrangements. Similar packages are in place for affected communities in the Northern Territory.

Local Indigenous organisations have led flood response and recovery efforts, working in collaboration with WA government agencies

Hundreds of residents forced to flee flood-hit areas of the Fitzroy Valley are waiting to return home, and damage assessment teams are examining homes and other buildings to determine whether it is safe for people to return.

Food and other supplies from the stock of local businesses were distributed and more have been flown-in to Fitzroy Crossing.

On Monday Mr Albanese, alongside WA Premier Mark McGowan, announced joint Commonwealth-State disaster recovery funding for the shires of Derby West Kimberley, Broome, Wyndham East Kimberley and Halls Creek in Western Australia.

The funds will be available for emergency assistance, living expenses, replacing essential household goods, and repairs, as well as personal and financial counselling after the trauma and significant financial losses caused by the devastating floods.

The Prime Minister said the federal government would provide any support requested by the Western Australian government to manage the "unprecedented" disaster.

"We have already deployed aircraft to assist with evacuations and to transport crucial supplies, and will continue to provide support now and long after the water recedes," he said.

Derby and West Kimberley Shire president Geoff Haerewa said emergency services and volunteer organisations now have the situation in hand but the task ahead remains massive given hundreds of evacuees are in evacuation facilities.

"There's no air conditioning, and we don't have the toilet facilities and the kitchen facilities to deal with a crisis of this size and magnitude," he told AAP.

Mr Haerewa said federal and state governments need to fund flood-resilient roads and infrastructure, in a region where dirt roads are common and bridges suffered severe damage during the floods, and also fit-for-purpose evacuation centres given the reliance on makeshift accommodation in this crisis.

Other Kimberley communities are expecting flood peaks by late today (Monday 9 January).

The astonishing rainfall has seen the Martuwarra / Fitzroy River swell to as wide as 50km in some parts, and to a height of 15.8m in Fitzroy Crossing.