Hydrologic Soil Groups

07/18/25

“How can we classify soils based on infiltration potential?”

Different soils will have different structures. Consequently, some soils will become saturated with water more quickly and become more vulnerable to runoff. We can classify these by Hydrologic Soil Groups, sorted from A (the highest infiltration/lowest runoff potential when thoroughly wet) to D (the lowest infiltration/highest runoff potential when thoroughly wet).