A key barrier to fish migration has been removed with the construction of this rock ramp fishway on Lethe Brook.
Summary of progress
The Lethe Brook catchment area is bounded by the High Ecological Value country of the Clarke Connor Range to the west and the Nationally Significant Goorganga Plains Wetland Complex to the east. The coastal plain between supports extensive grazing lands on 65% of the catchment and cane production across 18% of the catchment.
In 2007, the Lethe Brook catchment and estuary was rated as being in moderate condition relative to other catchment ares in the Mackay Whitsunday region. Between 2007 and 2013, there has been significant efforts by local farmers to improve management practices for improved water quality. The work of these farmers has established a firm foundation from which to expand landscape management and restoration activities for ecosystem condition improvements that will work towards meeting community goals for water quality and fish communities.
Grazing and cane management practices that reduce phosphorus and nitrogen loads in the Lethe Brook catchment area are the highest priority for continued improvement of event water quality. Management practices that reduce other nutrients and residual herbicides also remain a priority.
System repair actions that improve flow in wetland areas and restoration of mangrove and saltmarsh to support fishery nurseries as well as the removal of instream barriers are highest priority. Restoration of instream habitat to support improved bed and bank staibility are also important future activities to improve the ecological condition of the catchment.