A YEAR-long effort to repair five flood-eroded gullies on the Downs will conclude this week in Allora.
The gully along Dalrymple Creek Road is the final site to be repaired in the Condamine Alliance flood recovery program under the Natural Disaster Relief and Recovery Program.
Similar repair work has already been completed at Greenmount, Ramsay, Peranga and Maryvale.
The gullies were damaged by heavy rain and flood waters during the Summer of 2010 - 2011.
While much of the Condamine catchment was protected from severe soil loss due to extensive groundcover, good land management and soil conservation practices, serious erosion did occur in some parts.
The worst affected areas were often associated with waterways and where they intersected roads and other infrastructure.
A recent assessment by Condamine Alliance has estimated that approximately 2600 gullies of varying sizes exist across the catchment.
Seventy per cent of these gullies are found on cropping lands and the total length of affected gullies is near 1800 kilometres.
The repair job is a significant task but Condamine Alliance has already made good progress with the help of landholders, volunteers, soil conservationists and contractors.
The Allora site was one of five priority sites identified in the program to undergo repair to demonstrate how to stabilise waterways and stop gullies from getting worse.
The repair methodology for each site has been based on site-specific surveys and modeling prepared by international engineering firm Cardno ENTRIX in collaboration with local soil conservationists of Ninderry Associates.
Local excavator contractor MRP Earthmoving has completed the ground work at a number of sites which has involved flattening the gully slope, reshaping the channel and placing geofabric and rock to make a chute.
International conservation volunteers will help at the Allora site this Summer to plant approximately 1200 native Lomandra plants to protect against further soil erosion.
Once the project is completed, the repair methodologies will be shared as case studies with other landholders to increase knowledge about gully stabilisation, soil movement and soil conservation.
The gully stabilisation activities are part of a wider relief effort by Condamine Alliance funded through the National Disaster Relief and Recovery Arrangements via the Queensland Reconstruction Authority.
To view Condamine Alliance's latest flood recovery report card visit here
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