Dept of Environment, Water and Natural Resources - Soil Water Repellence

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Water repellence, or non-wetting, due to coating of soil particles by waxy materials from the breakdown of plant debris can result in water beading on the surface, uneven wetting and large masses of soil remaining dry. Mapping shows the proportion of land affected and degree of water repellence, while detailed proportion data are supplied for calculating respective areas of each water repellence class (spatial data statistics).

Dept of Environment, Water and Natural Resources - Physical Condition of Surface Soil

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Physical condition of surface soil mapping highlights areas where plant growth may be impeded due to poor surface soil structure, predominantly due to a condition known as hard setting. Mapping shows the proportion of land with surface soils susceptible to hard setting or sealing, while detailed proportion data are supplied for calculating respective areas of each physical condition of surface soil class (spatial data statistics).

Dept of Environment, Water and Natural Resources - Physical Condition of the Soil

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Physical condition of soil provides an integrated view of various physical impediments to plant growth associated with surface soils, subsoils and other limitations (e.g. waterlogging, salinity, rockiness or steepness). Mapping shows the most limiting soil physical condition (provided it occupies at least 30% of a map unit), while detailed proportion data are supplied for calculating respective areas of each physical condition of soil class (spatial data statistics).

Dept of Environment, Water and Natural Resources - Soil Salinity - Watertable induced

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This assessment refers to salinity which is linked to watertables. Soluble salts in soils affect plant growth by restricting water uptake. Salinity has varying degrees of severity and distribution. Mapping shows the degree of salinity and the proportion of land affected by discrete highly saline seepage, while detailed proportion data are supplied for calculating respective areas of each watertable induced salinity class (spatial data statistics).

Dept of Environment, Water and Natural Resources - Soils (soil type)

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Sixty one soils (soil types) represent the range of soils found across South Australia’s agricultural lands. Mapping shows the most common soil within each map unit, while more detailed proportion data are supplied for calculating respective areas of each soil type (spatial data statistics).

Dept of Environment, Water and Natural Resources - Soil Water Erosion Potential

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Water erosion potential, based on Soil Landscape Map Units of Southern South Australia, describes the susceptibility of land to sheet or rill erosion due to overland flow of water. Mapping shows the dominant water erosion potential class, while detailed proportion data are supplied for calculating respective areas of each water erosion potential class (spatial data statistics). Also available for download: Soil Water Erosion Potential (SA).

Dept of Environment, Water and Natural Resources - Soil Alkalinity

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Alkalinity is usually an inherent characteristic of soils, and alkaline soils are largely confined to areas with less than 400 mm annual rainfall. Mapping shows surface and subsoil alkailinty, while detailed proportion data are supplied for calculating respective areas of each alkalinity class (spatial data statistics).

Dept of Environment, Water and Natural Resources - Soil Surface Carbonate

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Surface carbonate often occurs as finely divided particles which reduce nutrient availability to plants and retard the degradation of some herbicides. Mapping shows the proportion of land with calcareous surface soils, while detailed proportion data are supplied for calculating respective areas of each surface carbonate class (spatial data statistics).

Dept of Environment, Water and Natural Resources - Soil Available Waterholding Capacity

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Available waterholding capacity refers to the potential volume (on a per unit area basis, expressed in mm) within the rootzone of a soil that can be filled by rainfall or irrigation, and is available to plants (i.e. not including moisture help by soil matrix suction). Assessments are based on the rootzone of wheat plants. Mapping shows the estimated average available waterholding capacity, while detailed proportion data are supplied for calculating respective areas of each available waterholding class (spatial data statistics).

Dept of Environment, Water and Natural Resources - Depth to Watertable (soils)

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Depth to watertable mapping highlights land where watertables may be sufficiently shallow on a seasonal basis to affect plant growth. It is intended to describe soil conditions for plant suitability and is not intended to be a literal map of watertable levels, which will change over time. Mapping shows the shallowest depth to watertable observed (provided it accounts for at least 30% of the map unit), while detailed proportion data are supplied for calculating respective areas of each depth to watertable class (spatial data statistics).