Sunday 17 February 2019

Tasman's drought


Tasman facing worst drought since 2001 - 'We have three weeks of water before it goes from bad to dire'



TVNZ,
16 February, 2019



First there were floods, then fire and now drought.

The Waimea Plains, cradled between two mountain ranges, are usually immune to such extremes in the weather.

But a Tasman District Council water scientist says the wider area is facing its worst drought since 2001.

Joseph Thomas met with MPs and opposition leader Simon Bridges today on the Waimea River bed, which is now flowing at its lowest level in decades.

The region hit by two large ex-tropical cyclones a year ago, which sluiced out hillsides and tore through homes and crops, has been stricken by a large wildfire over the past 10 days.

Now it's as dry as a bone, with no immediate relief in sight.

Mr Thomas, who has been working as water scientist in Tasman since 1992, said the situation is now dire.

"This is as bad as I've seen it since 2001. Back then the river went dry, but a lot later - we're earlier by a month so if it doesn't rain we'll be in a dire situation."

Mr Thomas said it was not only the Waimea basin but the whole district was extremely dry, right across to Golden Bay.

He said from Monday, water cuts on the Waimea Plains would increase from the current 50 percent to 65 percent.

"Based on the flow monitoring we'll do on Monday and Tuesday, there will be another meeting of the Dry Weather Taskforce and a decision will be made as to what further action may need to be taken in terms of cut backs."

Mr Thomas said for householders, there was now a complete hosing ban - meaning no watering of gardens, and the worst-case scenario was water being delivered to homes by tankers and people having to collect water in buckets.

"We have three weeks of water before the Waimea goes from bad to dire in terms of river flows."

For local iwi, the situation has brought not only cultural consequences, but economic distress through the effects on businesses owned by Wakatu Incorporated.

Te Tau Ihu iwi (top of the south) are shareholders in Wakatu, and collectively own and operate a number of orchards, vineyards and farms now affected by the dry weather.

Iwi spokesman Barney Thomas said the biggest issue was the life-force of the river.

"To run that river dry is going to kill the river."

Mr Thomas said iwi needed to be around the table with council, and needed to be part of the decision-making.

"Our councils and authorities are driven legislatively, whereas we come from a cultural perspective and if we had anything to do with this, the restrictions would be harder, so the water and the life-force of the river would be maintained."

Mr Thomas said he had not seen the river in such a state, but the problem extended further.

"It all flows into the hinterland, so what happens to the river happens to the land and that needs to be taken into consideration."

Without drastic steps now, the district would be without water, he said.

"As kaitiaki we have that responsibility for our generation, and our future generations."

Joseph Thomas said the challenge is also keeping salt water out, from the large tides which can make their way high up the Waimea River when its level was so low.

For the first time an emergency bund has been built in the river's lower reaches.

"We're trying our best with this bund to keep out the king tides. We will know late next week, if we don't get rain, our monitoring will show how much worse it's going to get."

rnz.co.nz - Tracy Neal

Weather: New Zealand to 'bounce back' to warm temperatures next wee


16 February, 2019


Weeks of hot weather has been interrupted by a recent cold front, but it's only a temporary reprieve before the heat strikes again.

"The cold front that moved over the country last night has brought down the overnight low temperatures. Some relief from the higher numbers we have been seeing in the last few days," MetService posted on Sunday.


Overnight temperatures last night were expected to drop as low as 5degC in Alexandra, with many other cities dropping below the double-digit mark as well.

However temperatures should bounce back next week as the ridge of high pressure moves firmly over the country, bringing calm and settled conditions for most parts of the country.

"Generally settled and warm conditions will return next week with only the far north and south of the country seeing some wet weather," says MetService meteorologist Mark Bowe.

At the end of next week, Weather Watch warns Cyclone Oma could connect with a cold front moving up New Zealand to create a small area of low pressure (known as a trough) around northern areas.



"Basically this acts as a bit of a link from that NZ cold front to the tropical storm, and it helps feed bigger rain clouds - this is definitely not a storm, it's a rain event only," the forecaster says.


"It's too far out to lock in - but the latest data does suggest it may influence rain clouds in the New Zealand area next weekend which would be great news for a lot of farmers and growers - not so great for all the outdoor events and festivals coming up adding some uncertainty there."

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