I am a groundwater modeller with the Hydrology Group in Christchurch.
Models are needed because it is impossible to directly observe environmental variables at all locations, all the time or in the future. Hydrological models can make reliable predictions in ungauged catchments and about future conditions.
Models have an important role to play in water management in New Zealand. To be useful, models need to be both flexible and complex; flexible because they are needed for a wide range of purposes, and complex because they need to simulate complex natural and man-made systems
Fine sediment is NZ’s most widespread contaminant, degrading ecosystems and impairing recreational, cultural and aesthetic values in our rivers, estuaries, and coastal seas.
Fine sediment is New Zealand’s most widespread water contaminant, degrading ecosystems, infilling dams and reservoirs and impairing recreational, cultural and aesthetic values in our rivers, estuaries and coastal seas.