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Healthy Country - Lockyer creek catchment

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The Lockyer creek catchment

The soils of the Lockyer Valley are recognised as some of the most fertile in the world, with the Valley known as the region’s salad bowl producing over a quarter of Queensland’s vegetables.

The Lockyer Catchment itself covers close to 3000 km2 and includes steep ranges in the North, as well as major escarpments that form part of the Great Dividing Range in the South and West.

The Central and Eastern parts fall to undulating low hills which surround the wide alluvial plains of the lower Lockyer Creek and the narrow alluvial areas of its major tributaries.

The major tributaries of the Lockyer Creek include Laidley and Tenthill Creek, important agricultural producing areas of the region.

Tenthill Creek

Tenthill Creek is a steep catchment and a sub-catchment in the mid to upper section of the Lockyer Valley. It was selected as a focal area due to its potential to release sediment as well as the variety land uses in the area.

The multiple land uses including grazing and horticultural production allowed a range of different sediment reduction interventions to be trialed as part of the program.

Lockyer focal area

The Lockyer focal area consists of almost 4000 ha of steep and mid to low slopes and alluvial flats.

It encompasses a 10 km reach of Blackfellow Creek and the landscape to the surrounding ridges which rise to 800 m above sea level and falls to 165 m above sea level at the junction of Tenthill and Blackfellow Creeks.

Sediment reduction interventions in both these areas have included:

  • Fencing grazing land into similar production units based on land type
  • Managing stock access to waterways
  • Enhancing vegetation along creek banks
  • Designing contour banks to manage farm runoff
  • Installing sediment traps to capture soil before it reaches the stream and stabilising erosion head cuts using rock chutes.