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).

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 - Depth to Hard Rock (soils)

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Hard rock is basement rock or bedrock that is too hard to dig with hand tools (and does not include hardpans). Mapping shows the average estimated depth to hard rock, while detailed proportion data are supplied for calculating respective areas of each depth to hard rock 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 - Structure of Subsoil (degree of limitation)

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Structure of subsoil provides an indication of impediments to root, and hence plant, growth due to poorly structured subsoils. Mapping shows the most limiting subsoil structure condition (provided it accounts for at least 30% of a map unit), while detailed proportion data are supplied for calculating respective areas of each structure of subsoil class (spatial data statistics).

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

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Recharge potential mapping shows the proportion of land with high to moderate potential for water to access groundwater systems via the soil. Detailed map unit proportion data are also supplied for calculating respective areas of each recharge potential class (spatial data statistics).

Dept of Environment, Water and Natural Resources - Soil Waterlogging Susceptibility

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Waterlogging susceptibility describes the degree and duration of impact to soils, and hence plants, arising from poor drainage. Mapping indicates the most severely waterlogged areas (provided they occupy at least 30% of a map unit), while detailed proportion data are supplied for calculating respective areas of each waterlogging susceptibility 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).

Soils Drainage Class

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

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Hardpan is material that is too hard to dig with hand tools, that has formed in-situ within or below a soil. Mapping shows the average estimated depth to hardpan, while detailed proportion data are supplied for calculating respective areas of each depth to hardpan class (spatial data statistics).