Large scale infrastructure project
We needed to ensure long term viability in order to continually support Opotiki’s aquaculture vision. To undertake such a large-scale project, there were critical elements to consider. Risk factors, flooding impacts and design issues were considerable challenges for our experts.
Ensuring the safe navigation of the harbour entrance while avoiding upstream flooding was principal within the project, as was understanding the many various coastal morphological impacts at play.
With the application of one-dimensional (1D) and twodimensional (2D) models utilising MIKE 21 HD, MIKE 21 SW, LITPACK, MIKE 21 ST and MIKE 3, our team successfully developed a robust solution for ODC.
From our modelling, we established that a re-engineered harbour entrance could alleviate the vessel access issues, allowing for more stable and improved entrance conditions. Although long term morphological impacts for flooding mitigation required further investigation, a realignment channel would somewhat reduce flooding impacts. The project, when undertaken, will greatly open up opportunities for the coastal settlement of Opotiki, creating potential aquaculture ventures and raising the wellbeing of the local community on many