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9.8: Soil Permeability

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    Soil permeability is the quality of a soil enabling it to transmit air or water through the soil pores. Texture, structure, cracking, and the amount of organic matter influence the permeability. The permeability of the least permeable horizon should be estimated because this becomes the most limiting horizon for water and air movement and root penetration. The soil permeability classes are slow, moderate, and rapid.

    Slow permeability < 0.6 inches of water move through the soil per hour. Slow permeability includes textures of silty clay, clay and sandy clay and soils with massive subsoils.
    Moderate permeability 0.6–6.0 inches of water move through the soil per hour. Moderate permeability includes textures of silt loam, loam, sandy clay loam, silty clay loam and sandy loam.
    Rapid permeability 6–20 inches of water move through the soil per hour. Rapid permeability includes textures of loamy sand and sand and soils with greater than 15 % gravel.

    This page titled 9.8: Soil Permeability is shared under a CC BY 4.0 license and was authored, remixed, and/or curated by Anna R. Schwyter & Karen L. Vaughan (UW Open Education Resources (OER)) via source content that was edited to the style and standards of the LibreTexts platform; a detailed edit history is available upon request.