The upstream reaches of St Helens Creek retain diverse riparian and hill slope habitat providing excellent conditions for abundant and diverse fish communities. System repair actions and efforts in management practice change aim to restore these values to some downstream reaches.
Summary of progress
St Helens Creek flows from the forested highlands of Eungulla National Park in the Clarke Range west of the township of Calen before entering the coastal plain and joining the estuary of Murray Creek at St Helens Bay. While the upper catchment is protected by National Park and reserves, the lowland areas have been extensively cleared for grazing and cane production, especially along the creek flats.
In 2007, water quality and ecosystem health was rated as moderate. Significant for ecosystem health priorities, St Helens Creek supports a remnant community of Jungle Perch, now rare in the Mackay Whitsunday region. Between 2007 and 2013, there has been considerable effort to improve agricultural management. As a result the water quality of St Helens Creek has improved.
Grazing and cane management practices that reduce nitrogen loads are the highest priority for continued improvement of event water quality. Management practices that reduce other nutrients and residual herbicides are a moderate priority.
System repair actions for instream habitat and riparian vegetation restoration and connectivity are of the highest priority to enable fish communities to gain the maximum benefits from the improvement in water quality.