Changing river flows have prompted an immediate evacuation notice for residents near Rangitata township in Canterbury.
The Timaru District Council says anyone who has returned to their farms in the marked area in the graphic below should leave now, or they may be cut off.
Power is likely to be interrupted at times to allow for works.
The order applies to those who may have been given the all-clear yesterday, and those in immediate danger are asked to call 111.
Forty new properties have been evacuated, in addition to the 75 already cleared.
Earlier today residents near the Rangitata South Branch were told to leave their homes.