Review of Common Management Practices for Controlling Nutrient Loads in Urban Runoff within the Hawkesbury-Nepean Basin for use in CMSS.

The application of the CMSS software to predict the impact of urban growth on the nutrient quality of the waters of the Hawkesbury-Nepean Basin was commissioned by the Sydney Water Board in 1992 and completed late 1993. The CMSS program predicts the effects of changes in land use and management practices on average annual total phosphorus and total nitrogen loads generated within a catchment.
As an adjunct to this project, the Water Board commissioned a review of urban management practices commonly employed in the Basin to provide the data needed to describe these practices in CMSS. From this review, the efficiency of the management practices at reducing total phosphorus and total nitrogen loads and the capital and ongoing costs of adopting the practices have been identified.