Whangateau Harbour Care Newsletter 1/3

April 2017
Edition 1 volume 3

Fencing of Tamahunga tributary underway

News 5

Fencing and restoration of the riparian edge of a Tamahunga Stream tributary at the Quintal Road and Leigh Road intersection is underway. Whangateau Harbour Care Group identified an opportunity to leverage off the establishment of the Brewery next to an un-fenced, un-planted esplanade reserve and hosted a planting day in July 2016 in an area where stock were already excluded. The Harbour Care Group liaised with brewery owners and the property owner on the other side of the stream and both indicated enthusiasm and willingness to be involved in the project. Auckland Council is funding the fencing component and support the procurement and management of the contract. An additional $3,000 has been secured from Healthy Waters regional budgets to add to the local board allocation to ensure completion of the project. This will enable two areas to be fully fenced and the adjacent landowner has also agreed to fence an additional piece of land which will make the stream area fully stock proof. Ongoing liaison with Whangateau Harbour Care will occur around weed control and future restoration planting.

Whangateau Reserve wastewater renewal.

The Council has budgeted $200,000 for the Whangateau Reserve waste water system renewal and is currently sitting with the project team..

Dotterel Forum announced.

News 4

A Forum for Auckland’s dotterel minders to say thank you for everyone’s hard work and dedication over the breeding season will be held on Thursday the 27th of April, 10.00-12:30pm at Ambury Regional Park barn/hall.
A guest speaker will share a story of success and overcoming the odds.

Silt in the harbour after Cyclone Debbie dumps rain in the catchment

News 6

Silt-laden water from a creek flowing into the harbour at Ti Point on Wednesday 5th April 2017 and the resulting sediment and gravel layer.

News 7

A Whangateau Catchment and Harbour Study Review of Marine Environment Information written in 2009 for the ARC by Shane Kelly mentioned that silting in the harbour was a potential threat in some areas of the harbour. He said
‘Side branches and the foreshore in northern parts of the harbour and in Omaha River are likely to be most sensitive to sedimentation, because their upper catchments are steep and erodible, and they tend to be sheltered receiving environments. The latter characteristic is likely to enhance sediment trapping. The potential consequences of increased sediment run-off are significant, given the value of Whangateau ecosystem and presence of sensitive species. Sedimentation could lead to an increase in mangrove cover, increase muddiness, reduce community and habitat diversity and lead to the direct loss of sensitive species.’
A large land slip some years ago covered a large area of the bay at Ti Point (known locally as Jack’s Bay) and as the slip has eroded it has led to silting of the bay. In addition, silt run off from the stream leading into the bay appears to be increasing due to the occurrence of several extreme weather events over the past year. These have dumped large amounts of silt and road gravel into the harbour at this bay. In some areas the sediment is 2cm thick.

Onsite wastewater education programme

The Auckland Council is undertaking an education programme which aims to increase residents’ awareness and knowledge of how to maintain and improve performance of their septic tank systems.
A behaviour change programme to address the issue of water pollution from poorly performing septic tanks will take place in late April and May 2017. Point Wells, Muriwai and Sandspit have been identified as potential target areas.
The programme also aims to reduce faecal contamination into the receiving environment.
The programme will be undertaken by EcoMatters who visited Whangateau and Ti Point last year and about 50 Point Wells households will be visited in May 2017.

LogoIf you have any news, notices or views of interest please contact the HarbourCare Group secretary, Liz Allen by email: liz.allen18laika@gmail.com

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