Author(s)

D. Watson, R. Goudey & C. Arrowsmith

Abstract

Mapping the spatial extent of environmental health: an approach using stream turbidity D. ats son', R. ~ o u d e ~ ~ & C. ~rrowsmith' I Department of Geospatial Science, RMIT University, Australia 2 Environment Protection Authority, Victoria, Australia Abstract The key to sustainable use of water resources is an understanding of the relationship between water usage and environmental health. Urban and agricultural users of water often use water from remote catchments where the environmental consequences of water harvesting are hidden. Likewise, when modified water disappears from sight, down the sink or into a river, few give much thought to the environmental consequences. Identifying levels of environmental health requires two steps. Firstly, expected levels of environmental health must be determined, and secondly, the rate and direction of change must be determined. This project develops a model to predict expected turbidity levels from catchment characteristics. Once, viewed as a purely aest

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