For Te Awarua-o-Porirua Whaitua Collaborative Modelling Project (CMP), a suite of hydrodynamic, wave, sediment transport and contaminant dispersion models have been calibrated against available field data.

These models have been used to assess Porirua Harbour attributes relating to sedimentation, suspended sediment concentration,  pathogens, water column nutrients and bed-sediment metal concentrations under existing land use.