… but water ban remains in place

Press Release – Greater Wellington Regional Council
The ban on outdoor water use in Wellington will remain in place until significant rain is received.

Consistent water savings by residents and businesses in Wellington, Porirua, Upper Hutt and Lower Hutt are still needed. The last week has again seen very little rain, and the region faces a further period of mostly dry weather.

“It may feel cool outside, and there is certainly dew on the ground. But we can not afford to be complacent,” says Regional Council Chair Fran Wilde. “The much needed rain has still not fallen, so we must continue to conserve.”

This week’s rain was considerably less than was forecast, and rivers will have returned to their pre-Easter levels in a day or two. Greater Wellington Regional Council is unable to recommend lifting the ban without receiving a significant amount of rain – enough to lift river flows and keep them there for more than a few days.

The last significant rainfall in the water catchments was on 19 March but another significant rain event in the next couple of weeks is not certain. Some showers are predicted for the weekend however only minimal rain is forecast for the next two weeks.

Chair Wilde acknowledges that many people are holding off doing their outside jobs but urges them to wait a little longer.

“It’s great that people are sticking to the ban and putting off washing their cars and windows. Low water usage means we can meet demand even while the rivers are low, so the more water we can conserve, the better off we will be if the rain refuses to come.

April rainfall totals so far in our water catchments are:

• Kaitoke – 8.5mm
• Wainuiomata – 1mm
• Orongorongo – 1.5mm

Daily water use totals for the last seven days*:

Date Water supplied (ML) (million litres)
Friday 29 March 119
Saturday 30 March 110
Sunday 31 March 106
Monday 1 April 121
Tuesday 2 April 134
Wednesday 3 April 125
Thursday 4 April 126

* This table shows validated daily water supply figures to Hutt, Upper Hutt, Porirua and Wellington city councils. Figures for the Easter weekend vary slightly from the raw data supplied in the daily updates over Easter

Press Release – Greater Wellington Regional Council
Daily target water use (maximum) = 130 million litres (ML)
Today’s (Friday) water use = 121ML
Change from Thursday = lower by 5ML

Water use was again below the target for maximum daily use today. We thank all water users for their continuing efforts to conserve water during this ongoing dry period. River flow rates remain well below long-term April averages. We expect to be able to meet the present level of demand for water without further rain – and without having to use storage – until towards the end of April.

No rain has fallen in the catchments in the last 24 hours. The 14-day weather forecast shows “the odd shower” up until Wednesday, followed by fine conditions for most of the following week. There is no rain in the forecast until the middle of the month. We need to maintain the level of water use below 130ML per day at least until the next major rainfall. Lower demand helps to preserve our water reserves longer.

Friday’s water supply came from:
Rivers: 66.9ML; Hutt aquifer: 51.8ML. Storage decreased by 2.3ML

Press Release – Greater Wellington Regional Council
Daily target water use (maximum) = 130 million litres (ML)
Thursday’s water use = 126ML
Change from Wednesday = higher by 1ML

Water use was again below the target for maximum daily use yesterday. We thank all water users for their continuing efforts to conserve water during this ongoing dry period.

In the next day or two, river flow rates are likely to have dropped back below where they were last Saturday, before the light showers of last Sunday and Wednesday evening. River flow rates remain well below long-term April averages.

While this light rain didn’t provide a lasting boost to our rivers, it has pushed things out by a few days. We now expect to be able to meet the present level of demand for water without further rain – and without having to use storage – until towards the end of April.

The 14-day weather forecast is less promising than it was yesterday, with “the odd shower” expected over the next four days, followed by fine conditions for most of the following week. There is no rain in the forecast until the middle of the month.

We need to maintain the level of water use below 130ML per day at least until the next major rainfall. Lower demand helps to preserve our water reserves longer.

Yesterday’s water supply came from:
Rivers: 68ML
Hutt aquifer: 55ML
Storage decreased by 1ML

Lake 2 remains 100% full.

The outdoor water use ban remains active.

 

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