Catchment Facts

  • Total area: 2,974km2
  • Stream network length: 6,056km
  • Local Councils: Toowoomba Regional Council, Lockyer Valley Regional Council, Somerset Regional Council, Ipswich City Council
  • Dominant land uses: native bush, grazing, intensive agriculture, rural residential
  • The upper catchment remains forested
  • Mid and lower catchment has been largely cleared
  • The catchment has the highest proportion of land used for intensive agriculture in SEQ; irrigation has regulated water flow and changed groundwater dynamics
  • Numerous impoundments are present in the catchment
  • Instability of stream banks and gully erosion due to degradation of the riparian vegetation

Freshwater results

Lockyer Catchment

  • Streams generally in poor condition.
  • Improvements in the Physical/Chemical, Ecosystem Processes, Aquatic Macroinvertebrates and Fish indicators.
  • Decline in Nutrient Cycling.