I don’t think so..
This was the morning after a day and a half of 90+ km/h winds and 140 litres of rain per square metre.
Since then, the estuary’s been dotted with up-country driftwood and other objects of interest (round hay bales, stranded on a sandbank,
small cars..), that drift in and out until they end up on the shore or head out to sea.
(Although. Some young idiots with a 9 month old baby had to be hauled out of the floodwaters of the Waimea river – “Thought we’d ga’n’avalook, eh”)
In the UK, they’d be screaming “Loch Ness monster!!!!”