Erosion of farm land is a major issue in Australia and one which we’ve all seen creates devastating damage if left untreated. As well as damaging the land’s potential to produce, erosion also results in the loss of valuable soils which enter our creeks and rivers and often end up damaging our natural wonders like the Great Barrier Reef.
Queensland Drones has developed erosion mapping techniques to accurately map, measure and profile erosion gullies like the one below in Wide Bay Region to inform the design of rock chutes and walls to limit further damage.
This erosion gully has been created by the slow leaching of sodic sub-soils activated by a constant trickle of seepage water originating over two kilometres upstream. The sodic layer dissolves and collapses, leaving the metre or so of topsoil without support, causing it to subside into the gully. The constant slow march of this erosion gully is also threatening power transmission lines that run through this gully by undermining the power poles.
A key component of the mapping of this erosion gully is a series of profile cross-sections showing the depth of each gully section, spaced at intervals of 5m through the line of the gullies. These cross-sections will be used to inform the design of the erosion management plan for this location.
As well as providing aerial mapping and cross-section profiling of the erosion gully, Queensland Drones also has the skills and experience to inform the factors that create erosion gullies by mapping the salinity of soils in the upstream environment, profiling the water courses feeding the gully and even identifying historic landscape changes that may be exacerbating the erosion.
To discuss how our erosion mapping services can inform your environmental management projects, please contact us using the links below.