Maritime New Zealand says the rescue of eight trampers in four separate incidents over the past two days highlights the value of personal locator beacons.
On Friday, three people were rescued from beside the Wanganui River, near Harihari on the West Coast, after being stranded by flood waters.
They activated their personal locator beacon at 4pm and a rescue helicopter from Christchurch picked them up.
A solo woman tramper with a ruptured Achilles tendon was rescued from the Wangapeka Track on the Karamea River after activating her beacon just before 5pm on Friday.
And on Thursday a party of three and a solo tramper were also rescued from the same track after activating their beacons.