Characterising the Relationship between Water Quality and Water Quantity

Department of Sustainability, Environment, Water, Population and Communities, 2013

The report Characterising the Relationship between Water Quality and Water Quantity was commissioned to illustrate how water quality and flow volume interact within particular aquatic ecosystems. DSEWPaC engaged Sinclair Knight Merz to bring together information and conceptual models to provide greater insight into some of the key water quality issues that are experienced across Australia, particularly in relation to ‘environmental values’ of water bodies as defined in the National Water Quality Management Strategy. This information will assist managers in making informed decisions about how water is managed in the landscape to maintain and improve its water quality.

The report includes:

  • an outline of the importance of the water quality and quantity relationship;
  • an outline of the key hydrological and ecological relationships that drive water quality; and
  • conclusions and conceptual models on the generalised relationship between water quality and water quantity for 12 types of aquatic ecosystems: temperate rivers, tropical rivers, dryland rivers, regulated rivers, urban streams, groundwater-fed streams, freshwater wetlands, lakes, reservoirs, salt wedge estuaries, heavily modified estuaries and near shore environments.