Catchment Facts

Total area: 1,195km2
Stream network length: 2,475km
Local Councils: Brisbane City Council, Logan City Council, Scenic Rim Council
Dominant land uses: urban, native bush, grazing, rural residential
Highly modified, urbanised catchment
Some grazing lands and natural bush/forested areas remain in the upper parts of the catchment
Riparian vegetation has been cleared from most waterways
Large volume of stormwater runoff into the waterways during/after storm events
Population growth is a major pressure on the catchment

2010 Freshwater results

F  Lower Brisbane Catchment

  • Streams generally failed to meet ecosystem health guidelines.
  • An increase in nutrient cycling offset by a decrease in ecosystem processes.

2010 Estuarine results

D  Brisbane Estuary

  • Continued high nutrients and turbidity.
  • Small increase in biological health from smaller sewage nitrogen signal.

F  Cabbage Tree Estuary

  • Continued high nutrient concentrations with improvements from decreased turbidity and phytoplankton concentration.