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


Outfall data collected from buoys

Outfall data collected from buoys

North Shore City Council has retrieved a series of buoys, which have been moored in the Rangitoto Channel, to obtain data needed to help it prepare design details for a new ocean outfall for the Rosedale wastewater treatment plant.

Information on water temperature, salinity and ocean currents recorded by data sensing equipment on the buoys, will now be analysed both here in New Zealand and in the United States.

The proposed new outfall, planned for completion by 2010, will take high quality treated effluent and discharge it 2.6 kilometres out into the Rangitoto Channel.

The water measurements are part of the council's wide-ranging assessment of the entire route, including the on-shore underground section of the outfall.

At the same time as the buoys were retrieved, two further surveys were carried out - one a seabed survey to measure sand levels, and the other a geophysical survey to investigate the composition of the seafloor.

The council is working in association with environmental consultants Maunsell Ltd, and the National Institute of Water and Atmospheric Research (NIWA) to gather and analyse the information.

Council planning and projects group manager Adrian Vosloo, says the buoys obtained a comprehensive set of data, covering the entire six month period they were in the water.

The data will provide valuable information on how the water discharge plumes from the new outfall will dilute and disperse into the Hauraki Gulf, and whether water will form thermal layers during the spring and summer.

Results from the buoys and the two surveys are expected in about six months time.

© Scoop Media

Parliament Headlines | Politics Headlines | Regional Headlines


Minister of Finance: Plan Shows $100 Billion Infrastructure Projects

Finance Minister Bill English has today launched the Government’s Ten Year Capital Intentions Plan (CIP) which shows a pipeline of $100.9 billion worth of infrastructure projects over the next decade. More>>


Werewolf: Safe Landings Gordon Campbell on the safety challenge to the Wellington runway extension.

The safety-related legal challenge revolves around the size of the 90 metre long Runway End Safety Area (RESA) being proposed for the runway extension. More>>


Environment Commissioner: We Need To Work Together On Climate Change And Farming

“The debate around agricultural emissions and the ETS has been polarised for too long,” said the Commissioner. “But the ETS is not the only way forward – there are other things that can be done.” More>>


NZ Super Fund: Seeking To Put A Market Price On Climate Change

Oct. 19 (BusinessDesk) - The New Zealand Superannuation Fund says it will devise a set of rules to assess investment winners and losers under climate change, a strategy that could rule out fossil fuels or producers such as current portfolio member Exxon ... More>>


Rejuvenation: Parata Will Not Contest 2017 Election

Education Minister and National List MP Hekia Parata has today announced that she will not be contesting the next election. She advised the Prime Minister of her decision earlier this year. More>>

Prisons Grow: Government Approves Plans For Increased Prison Capacity

Despite significant progress in reducing crime the number of prisoners has increased faster than projected. This is because the proportion of offenders charged with serious crimes has risen, meaning more people are being remanded in custody and serving more of their sentences in prison. More>>


Gordon Campbell: On Plastic Bag Activism, And Street Harassment

Amusing to see the Act Party experiencing another outbreak of young fogey-ism. What has aroused the ire of Act Leader David Seymour this time is the introduction of a Greens private members bill to the ballot process, calling for a 15 cents levy on plastic bags to reduce pollution. More>>


Unclear Weapons: US Navy Ship Cleared To Visit NZ For Navy's 75th

United States Navy ship, the USS Sampson, has been given clearance to visit New Zealand next month by Prime Minister John Key... “The process for considering the visit by the USS Sampson is the same as that used for all ships attending the International Naval Review." More>>


Get More From Scoop



Search Scoop  
Powered by Vodafone
NZ independent news