 |  | | | 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
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| | | Freshwater results |
| | | | D | | Lockyer Catchment |
| | | - Streams generally in poor condition despite increases in physical/chemical, macroinvertebrates and fish indicators.
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