The federal and Northern Territory governments have activated disaster assistance for the Barkly region after recent severe weather and flooding.

A cost-sharing agreement between the Commonwealth, State and Territory governments, the Disaster Recovery Funding Arrangements supports the delivery of urgent financial assistance to disaster affected communities.

The Barkly Regional Council, who called for the assistance, said on Wednesday a region-wide assessment to reveal the extent of the damage is currently underway.

Once assessed, the Council will be able to restore essential public assets and infrastructure such as debris removal, temporary repairs, and works to make properties safe.

Heavy rain and high winds lashed the Barkly during February, causing major damage to roads and other critical infrastructure.

Days of torrential downpours isolated communities and pastoral stations and left many routes impassable. Residents of Imangara, who relocated to Ali Curung after their homes flooded, have still not been able to return.

Council CEO Peter Harder said the BRC "lobbied extensively" for the activation of the Disaster Recovery Funding Arrangements to be able to access the funding required for repairs.

"Intense rainfall and flash flooding across the region caused widespread damage to roads, community assets and critical infrastructure," he said.

"Now we must determine the full extent of the impacts so we can establish recovery priorities as soon as possible.

"We are also hoping the DRFA will support Council to make our roads and communities more resilient to these types of events in the future."