Local Govt | National News Video | Parliament Headlines | Politics Headlines | Search


Groundwater levels update for Central Plains area

July 17, 2006


Groundwater levels update for Central Plains area of Canterbury region

Since Environment Canterbury’s last groundwater and river flow update at the end of May this year, good May rainfall and June/July snow melt has helped change the situation for spring-fed streams in the Central Canterbury/ Ellesmere catchment. In particular, the Irwell River, which has been dry since February 2005, is flowing again.

- ECan records for July show that, in general, there has been a moderate to strong recovery of groundwater levels in shallow and moderate depth aquifers, resulting from the rainfall and snowmelt that occurred in May and June.

- Deep wells in the Central Plains between Te Pirita and Darfield are showing less evidence of recovery and some are still setting new monthly records, indicating the recovery in groundwater levels is still weak.

- The expected strong recovery in shallow and moderately deep wells is also due to the recharge from rivers such as the Selwyn, which began to flow in its middle reaches towards the end of June.

- Spring-fed streams such as Harts Creek are now flowing at about 2000 litres per second, the first time it has risen above its minimum flow of 1000 litres/second since October 28, 2005. (The mean flow for Harts Creek is 1952 litres/second).

- At Coes Ford, the Selwyn River is flowing at about four cubic metres per second.

- The Irwell River is now flowing for the first time since February 2005, going from dry in May to trickles and puddles and now about 100 litres/second flow.

- Rainfall data from National Water and Atmospheric Research for May and June indicate that the Lincoln site received about double the mean rainfall, whereas the rainfall in the period January to April was at about mean levels. In contrast, the rainfall at Hororata has only been at about mean levels since the summer.

- Soil moisture data, also from Lincoln indicate a strong soil moisture surplus since mid-May.

- Groundwater levels in all five of the West Melton groundwater zone monitoring bores are above the measure at which pumping restrictions are required - a turnaround from the end of May.


© Scoop Media

Parliament Headlines | Politics Headlines | Regional Headlines

Gordon Campbell: On The Peters/Ardern Triumph

There are a lot of good reasons to feel joyful about this outcome. It is what so many young voters – the best hope for the country’s future – wanted.

Far more important than the implications for the Economy Gods ( is the dollar up or down? ) last night’s outcome will also mean many, many vulnerable New Zealanders will have a better life over the next three years at least.

Yet the desire for change was in the majority, across the country..>>>More


Labour on its agreement |Peters: Post-Election Announcement Speech | Greenpeace “cautiously hopeful” about new Government | ACT - Madman on the loose | E tū ecstatic | Chamber welcomes the outcome | Greens on their joining Govt | EDS welcomes new govt | Immigrant groups worry | Feds ready to engage new coalition government | Labour Ministers of the Crown announced


Climate: Increasing Greenhouse Emissions Hit NZ

New Zealand is seeing impacts of excess greenhouse gas emissions in our climate and oceans, according to the latest national report from the Ministry for the Environment and Stats NZ about the state of the atmosphere and climate…More>>


Wellington.Scoop: Arrests At Blockade Of "Weapons Expo"

“We encourage people in Wellington to get down to the Westpac Stadium now for a day of awesome peace action. There will be plenty of food, music and activities to keep us sustained through the day.” More>>


Rorschach Restructuring: PSA Taking Inland Revenue To Court Over Psychometrics

The Public Service Association will be seeing Inland Revenue in Employment Court over its intention to psychometrically test employees reapplying for their roles at the department as part of its controversial Business Transformation restructuring plan. More>>


Nuclear Disarmament: Nobel Peace Prize 2017 Awarded To ICAN

Congratulations from iCAN Aotearoa New Zealand to international iCAN, the other iCAN national campaigns and partner organisations, and the countless organisations and individuals who have worked so hard for a nuclear weapons-free world since 1945. More>>


Expenses: Waikato DHB CEO Resigns

An independent inquiry has identified that Dr Murray had spent more than the agreed $25K allocated for relocation costs, and other unauthorized expenses involving potential financial breaches of the chief executive’s obligations. More>>


Wellington.Scoop: Sad About The Trolley Buses?

The Regional Council’s MetLink is today spending money to tell us that it really loves Wellington’s trolley buses, even though they’re all being taken off our roads by the end of this month. More>>


Post-Election: Preliminary Coalition Talks Begin

New Zealand First will hold post-election preliminary discussions in Wellington with the National Party tomorrow morning and the Labour Party tomorrow afternoon. More>>




Featured InfoPages

Opening the Election