July 19, 2019
Debris dams offer long term plan for Waiapu recovery
One of the people behind an ambitious scheme to reduce erosion in the Waiapu Catchment says it's something that will benefit the whole East Coast community.
The One Billion Trees Fund is providing up to $5 million over 10 years to Whakaoratia te Mana o Te Waiapu – a partnership between Te Wiiwii Naati Trust and Te Riu o Waiapu Trust Partnership.
Trustee Hilton Collier says the equivalent of a truck and trailer load of sediment washes down the river every nine seconds.
He says the project involves building debris dams on tributaries that feed into the Waiapu.
"These will have boards placed across them. The boards will be used to hold the sediment as flood events occur. Once these are filled the next piece of work will be to plant poles. Once the poles are established they will provide more permanent sediment traps, and the plan beyond that is to go and plant native species into those," Mr Collier says.
The projects will create benefits for the 12 marae in the catchment, including supporting the growth of whānau businesses such as tree nurseries for the riparian plantings.
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