The drainage class of a soil (the degree to which the soil becomes water-saturated during the year)can be judged by the presence and location of gley in the soil profile.

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The presence and location of gley in the soil profile is a good indicator of the drainage class of a soil, as gley forms in waterlogged soils. Therefore, if gley is present, it indicates poor drainage and a high water table.

The Drainage Class of a Soil (The Degree to Which