Regional catchment strategies are now the overarching documents governing programmes for investment in catchment management in Victoria and these are supported by underlying strategies and action plans for particular resource management issues such as salinity, nutrients, biodiversity and soil health. Spatial data and expert knowledge have been used in a risk assessment framework (Figure 1) to prioritise actions within a soil health strategy for the Corangamite Catchment Management Authority, Victoria. A land use impact model (LUIM) previously developed within the Department of Natural Resources and Environment was used to determine areas in the Corangamite region that were potentially at risk from specific soil degrading processes. LUIM has an aspatial component that incorporates knowledge of relationships between land qualities and activities on the land. It also has a spatial application that uses a GIS to map where these relationships exist or are likely to exist. A paddock scale land use layer and 1:100 000 scale soil landforms were used as the baseline data to map likelihood of soil degradation under current land use. Workshops with regional experts were used to create tables of relationships between land use practices and degradation processes, and between soil landform attributes and susceptibility to degradation processes. A Bayesian approach was used to assess uncertainty in some of the data. Determination of the consequence of degradation, computed from the sensitivity and value of soil assets, presented a challenge which remains to be fully resolved in order to present a scientifically defensible assessment of risk.