Flood-hit NT communities are expected to be fully evacuated by Saturday afternoon.

The evacuation of flood-affected residents of the Northern Territory is expected to be completed by noon Saturday.

The air evacuation of about 600 residents from the communities of Kalkarinji, Daguragu and Pigeon Hole continues after they were flooded on Wednesday.

Deputy Chief Minister Nicole Manison says authorities are yet to determine the extent of the damage, but says some residents have lost all of their property.