The National Soil Inventory (NSI) features data is a spatial, point dataset with 6,127 points, located in a 5km grid across England and Wales.

NSI features derives many parameters beneficial for modelling soils. These parameters, derived from readings and measurements taken at the NSI site include the depth from the surface to various layers, as well as providing information on the amount of risk that is posed to this soil by erosion and flooding. This dataset will prove important for those wanting a good understanding of the depths of the various layers in the soil profile, and those interested in mapping risks.

NSI features was used in the creation of the DEFRA Agricultural Land Classification (A.L.C.).

How much does this product cost?

• £1000 for each individual property across England and Wales;
• £24 per point, all data for that point (discounted for more than 50 points);
• £9,550 for the whole dataset.

For detailed pricing information, use our Quotation Advisor utility.

NSI Site data and description

The table below describes the various properties within this data product. Each point contains the information outlined below.

Property	Example from data	Description
EAST_NSI	91000	National Grid reference easting at 5kmx5km resolution with 1km offset from true grid
NORTH_NSI	11000	National Grid reference northing at 5kmx5km resolution with 1km offset from true grid
DTOP		Depth (cm) of topsoil
DGLEY		Depth to gleyed horizon (cm). 999 implies NO gleyed horizon present.
DSGLEY		Depth to slightly gleyed horizon (cm). 999 implies no slightly gleyed horizon
DSKL		Depth (cm) to skeletal horizon. 999 implies NO skeletal horizon
DROCK		Depth (cm) to rock. 999 implies no rock
DSPL		Depth (cm) to slowly permeable layer, ie in which effectively there is no downward percolation of water. 999 implies NO slowly permeable layer
CALCAREOUS_TOPSOIL		Yes / No, indicating if the topsoil is calcareous or not (Y= Greater than 1% CaCO3)
ORGANIC_TOPSOIL		Indicates Carbon >12% in the top 25cm
DISTURBED		Soil disturbed indicator (Y/N)
EROSION_RISK		Indication of the erosion risk: Y (erosion risk), N (no risk), I (indeterminate)
FLOOD_RISK		Susceptibility to flooding indicator Y/N
MARINE_ALLUVIUM		Marine alluvium indication: possible (Y), not possible (N) or could be possible (M)

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