Daly River floodwaters have reached 16.42 metres, the highest level ever recorded, inundating the town.
3,159 relief payment cards worth $2.83 million have already been processed, with support expanding to more communities across the Territory.
More than 500 people remain in evacuation shelters, while power is being restored, damage assessments continue, and planning is underway to return evacuees' home.
Chief Minister Lia Finocchiaro says the Northern Territory is seeing the strength of its communities as government agencies and emergency services continue responding to widespread flooding across the Territory.
The Territory Emergency Operations Centre, which has been responding to multiple flooding events across the Territory since February, remains in the response phase, with more than 600 Territorians currently in evacuation shelters across Darwin, Katherine and Mataranka as recovery planning continues.
Mrs Finocchiaro said flooding at Daly River has reached unprecedented levels, marking one of the most significant flood events the Territory has experienced.
"Flood levels at Daly River have reached 16.42 metres and continue to rise. This is the highest level ever recorded, with the town inundated and every building flooded to roof level," she said.
"Despite the devastation, the response from emergency services, volunteers and the community has been extraordinary, including national support from the Red Cross, Salvation Army, other state SES volunteers and federal emergency agencies."
The Department of Children and Families is rolling out Immediate Relief Payments as quickly as possible, with support already reaching thousands of residents affected by flooding.
"So far 3,159 pre-paid debit cards have been processed, delivering more than $2.83 million in assistance starting with Katherine, Murray Downs and Darwin River," Mrs Finocchiaro said.
"Based on Katherine's population, that means around 25 per cent of residents have already received support, making this the largest and fastest disaster payment rollout in the Territory's history."
Payments are now expanding to additional communities including Jilkminggan, Murray Downs, Palumpa, Naiuyu and Daly River, as well as residents in the Coomalie and Litchfield Local Government Areas.
Government agencies are also making direct contact with 12 affected stations near Murray Downs about accessing assistance through the new online system. An online application system is being developed to ensure support reaches impacted communities as quickly as possible.
Planning is also underway to return evacuees to communities including Beswick, Jilkminggan and Katherine over the coming days as conditions allow.
In Katherine, the river has begun to fall and impact assessments have now been completed for around 1,100 homes.
Power has been restored to more than 2,700 properties, with fewer than 150 still without electricity, as crews continue restoration work.
The Darwin River Dam pump station has all 4 pumps back on and the Katherine Hospital is set to do a staged reopen, starting with its emergency department, from today.
Mrs Finocchiaro said the flooding had demonstrated the resilience and generosity of Territorians.
"Across the Territory we are seeing incredible community spirit, neighbours helping neighbours, volunteers stepping up, and local businesses supporting recovery efforts," she said.
"And this hasn't just started; we've been seeing it since Cyclone Fina back in November last year.
"I've spoken to residents in communities like Darwin River and Katherine, and the determination to rebuild and help one another is truly inspiring.
"Territorians look after each other, and that spirit is what will carry communities through recovery," Mrs Finocchiaro said.
"To help with the clean-up, 14 Corrections prisoners and four Corrections staff will travel to Katherine tomorrow. They will be based out of CDU Katherine and assist residents with the clean-up."
The Northern Territory Government has submitted a Request for Assistance to the Commonwealth, with further recovery support for Katherine currently under discussion but yet to be approved by the Federal Government.
Chief Minister Lia Finocchiaro and Treasurer Bill Yan will travel to Canberra today to meet with Federal Infrastructure Minister Catherine King to discuss the impact of flooding on Territory roads infrastructure.
"This is a major disaster event and recovery will take time," she said.
"But the Territory Government is working around the clock to support communities, restore services and make sure help reaches those who need it."
