Priority projects for Tomahawk Lagoon

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Ecological Assessment

Investigate the balance between the needs of human interaction with the lagoon and wildlife (hydrological function, ecology, wildlife, walking tracks, flood hazard).

Water Quality Data

Have a permanent water quality monitoring site installed to establish baseline data and ensure mahika kai safety.


Sediment management around the outlet to ensure that there is flushing and better flow of water in and out of the lagoon.

Citizen science

Support ongoing water quality monitoring programme as a way to generate data for the catchment and as an important community engagement tool.

Education and awareness

Engaging, educating and inspiring the local community to support this action plan. This area is to be a source of learning for local schools. Development of resources to assist with this engagement and education.

Pest and weed programme

Support and provide resources to assist neighbours to form groups to tackle weed and pest species in a combined and aligned effort. The aim is to control predators of birds and to minimise impacts on the native forest in the area and to control weeds where fast growing exotic species out compete natives.

Fencing project to exclude stock from waterways

Support for landowners to exclude stock from waterways to protect waterways.

Native plant restoration

Support, advice and resources provided to aid landowners with riparian planting projects to restore the ecosystem

Research which riparian plants will be most effective

Leverage off relationships with university/schools

Community Planting Events

Community planting days and events where people can come together to help restore the lagoon and its catchment.

Catchment group formed and supported

Joining of agencies and the community. Establish a ‘Friends of Tomahawk Lagoon’ with members of the community and stakeholder representatives

Recreation (boardwalk, walkway, boat ramps)

Identify opportunities with Department of Conservation and private landowners for sections surrounding the lagoon to be restored and developed for public access.

Support nurseries run by Yellow Eyed Penguin Trust or Tomahawk Smaills Beach Care Trust

To provide locally grown plants for planting within the catchment.

Study of flora and fauna present in this area

To help understand why we should protect the area.

Algae removal

Use technology to reduce the frequency of algal blooms in the lagoon and enhance mahika kai and recreational opportunities. Investigate floating wetlands.

Sediment removal around weir (top lagoon)

Remove sediment from around weir to improve water quality by increasing the turnover of water between upper and lower lagoons. Upgrade weir.

Stormwater in urban areas drains to the sea

Need to help educate the public and developers about stormwater.

Storytelling exercises

What did the catchment look like historically and how was it used? Use visuals and tie this into the ecological assessment. Stories from mana whenua.

Pest fish in the lagoon

Investigate the impacts environmentally vs recreationally.

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