Catchments of the Logan and Albert Rivers are currently the single largest contributors (approx 30 percent) of sediment to Moreton Bay and data from a sediment characterisation study (Caitcheon et al, 2001) indicated that about 75 percent of the sediment being delivered to the lower reaches of the Logan and Albert Rivers originates from channel (gully and bank) erosion.
The Upper Logan Reach Plan presented an ideal opportunity to investigate how a sub-catchment plan can be used to inform and prioritise actions to improve riparian health and reduce sediment loads in the Logan River, and demonstrate the effectiveness of this approach. The project directly engaged key stakeholders, including Scenic Rim Regional Council, SEQWater, Beaudesert Landcare, SEQ Catchments and local landholders in plan’s development and piloting. The project area encompassed a 7.5km section of the Upper Logan River. Commencing at the Boonah Rathdowney Road/Upper Logan Rd intersection, the project extended downstream to Downes Bridge, two minutes outside the township of Rathdowney.
The aims of the project included the following priorities:
- Stabilise and improve the condition of stream banks in order to improve water quality and prevent soil loss;
- Control the spread of weeds and reduce the present level of weed invasion in the riparian zone;
- Document the current state of the river and any changes that result from the planning process;
- Control the threat of wild dogs to livestock and residents;
- Investigate the possibilities of developing an integrated fire management plan for the district;
- Improve cooperation between government agencies, council, local groups, and;
- Measure and compare water quality in the Upper Logan and tributaries e.g. Burnett Creek.
Achievements of the project included:
- 20Ha of weed control;
- 5 km of stock exclusion fencing of riparian areas;
- 17.5Ha of tree planting;
- 120m of in-stream works; and
- 9 off-stream watering points.