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Te Waiu o TutiraTe Waiū o Tūtira

A long term action plan - Te Waiū o Tūtira (the milk of Tutira) - sees Maungaharuru Tangitū Trust, landowners and the local community working together.

Te Waiu o Tutira - LAKE TŪTIRA - a clean and healthy lake

tutira SOAP2See our Strategy on a page for Tūtira here

Tūtira and Waikōpiro lakes have long been popular for recreation and fishing.  The lakes are central to many recreational and environmental opportunities in the area.

A long term action plan - Te Waiū o Tūtira (the milk of Tutira) - sees Maungaharuru Tangitū Trust, landowners and the local community working together. 

What do we want to fix?

The lakes have been by affected poor water quality and algal blooms for decades - the first algal bloom was recorded in 1957.  This is not an overnight problem, and there’s no single cause. Rain washes soil and nutrients from fertiliser into the lake from the surrounding landscape, plus a ‘legacy load’, a build up over decades, of soil and fertiliser nutrients sits in the lake bed - both these reduce water quality and feed algal blooms. 

What do we want to do? 

We want to develop a comprehensive action plan to restore the lake and prevent future contamination from the wider landscape so families can once again enjoy the lake.

Over the years, there have been many actions to improve the lake such as tree planting and creating more wetland areas. The Regional Council purchased the regional park to manage it as a soil conservation area. 

The Regional Council has also carried out a lot of science investigations in recent years to record how this complex lake works and to find long term solutions.

A long term action plan - Te Waiū o Tūtira (the milk of Tutira) - sees Maungaharuru Tangitū Trust, landowners and the local community working together.  The aim is to reconnect Papakiri Stream’s clean low flows - while stopping the muddy storm flows, add more lake edge and wetland planting, and consider water bubbling technology (aeration) to stop algal blooms. Careful land use planning will also assist.

Find out more in our information sheet

Our work so far

New monitoring buoy installed - a new monitoring buoy has been installed in lake Tūtira, with the old buoy moved into Waikōpiro.

Maungaharuru - Tangitū Trust - a partnership between the Regional Council and Maungaharuru-Tangitu Trust continues as we work through the work programme for Te Waiū o Tūtira. The Trust and hapu have planted around the lake edges.

Air Curtain - an air curtain trial in Waikōpiro Lake at Tūtira began in 2017, and has returned mixed results. The air curtain does help to mix the water in the lake, but there is uncertainty as to how successful it would be in Lake Tūtira, to improve the water quality. The trial continues as part of Te Waiū o Tūtira (the milk of Tūtira) project, which is a partnership between Maungaharuru-Tangitū Trust and Hawke’s Bay Regional Council aimed at restoring the mauri of Lakes Waikōpiro and Tūtira.

A lack of oxygen and the lake water heating up over summer has been a major factor causing algal blooms and the death of fish, which has left the lakes largely out of bounds to those who enjoy camping, swimming and boating in the area. Blooms can also turn toxic and pose risk to human and dog health.

What is it and what will it do? - Pressurised air is pumped through a 50-metre pipe tethered near the bottom of the lake and across the deepest part, creating an air curtain. The air curtain increases oxygen levels at all depths through the lake by creating a circulation current, much like the bubble in a fish aquarium. The system is being piloted in the smaller Waikōpiro. If successful, a larger air curtain could be installed in Tūtira Lake. 

The air curtain was constructed on-site by the Regional Council's Works Group staff, mostly out of parts found in any hardware store. 

Major financial boost in efforts to improve Lake Tūtira

In April 2018, Project Te Waiū o Tūtira (the milk of Tūtira) received $1.5 million in funding from the Freshwater Improvement Fund, administered by the Ministry for the Environment. The project aims to improve water quality and ecological habitat in Lakes Waikōpiro and Tūtira, forming part of a nationwide effort to clean up New Zealand’s rivers and lakes.

Here is a video of the Regional Council installing the air curtain.

 

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