Regional assessment of the flood risk related to development plans. Evidence from past flood events and previous flood risk assessments to zone the flood risk. Relate flood risk to the property type to locate the most vulnerable in the lowest risk areas.
Formal assessment of the risk of flooding to a development site. Survey of the site plus surrounding area and river channel. Development of a hydraulic model to test the water levels for floods of different magnitudes. Mitigation measures to reduce the risk.
Catchment surveys to apply traditional land management techniques to reduce runoff rates in the upper catchment and increase storage throughout the catchment. Techniques can include restoration of wetlands, planing native woodlands, restoration of river channels and the enhancement of surface water storage features.