Modelling catchment processes in the Swan-Avon river basin

Neil R. Viney, Murugesu Sivapalan

Research output: Contribution to journalArticlepeer-review

Abstract

A conceptual hydrological model, LASCAM, is applied to the Swan-Avon catchment (area 120 000 km2) in Western Australia to predict yields of water, salt, sediment, phosphorus and nitrogen. Each of the nutrients is further discriminated into soluble and particulate components. The model uses a single set of global parameters that are applied to each of the 134 subcatchments. Spatial mapping of the model results shows that yields are closely related to the distribution of rainfall and vegetation cover. Application of the model to various land cover scenarios show that since European settlement in the catchment, there has been a five-fold increase in streamflow, a 40-fold increase in sediment yield, and approximately 16-fold increases in total nutrient yields.

Original languageEnglish (US)
Pages (from-to)2671-2685
Number of pages15
JournalHydrological Processes
Volume15
Issue number13
DOIs
StatePublished - Sep 1 2001
Externally publishedYes

Keywords

  • Catchment hydrology
  • Conceptual modelling
  • Erosion
  • Nitrogen transport
  • Phosphorus transport
  • Sediment transport

ASJC Scopus subject areas

  • Water Science and Technology

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