The 48-hour Greater Darwin lockdown implemented on Sunday has now been extended for a further 72 hours, with stay at home orders in place until 1pm on Friday.

Katherine has not been hit by those restrictions, however locals are keeping an eye on the situation.

Katherine Town Council chief executive officer Ian Bodill said it was business as usual in the town for now.

"We had a meeting this morning that anticipated and planned for what would happen if the lockdown stretched to Katherine," he said.

"We also met with a local emergency services group and we can enact plans if it spreads."

The news out of Darwin means accommodation sites such as local caravan parks, already busy before the COVID cluster, are in a situation where they are fully booked as people unable to get to Darwin seek a place to stay.

Riverview Tourist Village manager Dee Miller said there had been an increase in enquiries since the lockdown and they had been working to assist people where they could.

"We have had a lot of calls and had to turn people away," she said.

"We are trying to help accommodate people who had already left for Darwin.

"We are 100 per cent full with our cabins, motel rooms, powered and unpowered sites, and we have been on average 98 per cent full since the start of May - the current situation made it worse as we didn't have anything to offer people."

Mr Bodill said the council had also been fielding enquiries from people who were stuck in the region, with overflow caravan services available at the Katherine Showgrounds.

"We have been faced with a lot of people who have come into the office looking for places to camp," he said.

"Katherine is experiencing a lot of people who are not really knowing where to go and are just riding around town."

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He said he had noticed an increase in the amount of people shopping at local supermarkets, as they watched to see what would happen next.

Wurli-Wurlinjang Health Service has been providing COVID-19 vaccinations to Indigenous members of the Katherine community.

Its COVID project officer Antony King said there had been "lots of interest" from the community to get vaccinated.

Mr King said the Darwin lockdown, coupled with people coming in for their second dose, meant he was administering vaccines throughout the week, with plenty of other enquiries.

He said the situation in Darwin and the nature of the virus showed that things could change overnight.

"We need to be on the front foot - getting a vaccine is great, but this shows that even with the rollout happening there is the potential that things can change," Mr King said.

"It is important to get vaccinated, we need to keep the community safe."

He said Indigenous people could phone Wurli-Wurlinjang to book an appointment to get a vaccine, which was free.

Mr Bodill said he hoped the situation would continue as it had been in recent months, with people checking out their own backyard in the wake of wider restrictions.

"We have been quite lucky in the last 18 months with business activity and tourism," he said.

"For example, our Visitor Centre is anticipating hitting the $3 million sale mark, where the best figure before that in a financial year was $1.8m.

"It has been a good year for Katherine and in this particular season tourism has taken off, camping has taken off, and places to visit are experiencing a good time."

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