The Large Scale Catchment Modelling project is a joint initiative of the Centre for Water Research, the Water Authority of Western Australia and Alcoa Australia. Its objective is to develop a water yield and salinity model capable of predicting the hydrologic response of large, heterogeneous catchments (up to 3000 km2) to land use changes (e.g., logging, mining) under various projected climate scenarios. The model is based on a distributed framework, with the fundamental building blocks being nested subcatchments of area 1-5 km2. The hydrosalinity of each subcatchment is modelled in terms of three interconnected conceptual stores of soil water and salt representing a perched near-stream aquifer, the permanent groundwater, and an intermediate unsaturated infiltration store. This paper presents applications of the model to several small to medium-sized catchments in southwestern Western Australia exhibiting complex histories of land use change.
|Original language||English (US)|
|Number of pages||6|
|Journal||National Conference Publication - Institution of Engineers, Australia|
|Issue number||94 /15|
|State||Published - 1994|
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