Flood study centres around the opening of Cockrone Lagoon to the ocean when the water level exceeds the let-out-level of RL2.476m AHD. The policy is aimed at minimising the flooding of properties adjacent to the lagoon.
The investigation process used in this flood study was:
- collection of available data
- assessment of available data
- overview of lagoon behaviour
- assessment of coastal processes
- hydrologic modelling of the catchment to determine flood inflows, and
- hydraulic modelling of the lagoon to assess flood levels from flood inflows