In soil classification, what hydraulic condition is indicated by "S" or "LS"?

The designation "S" or "LS" in soil classification refers to saturated or very fine sandy soil, which typically has high hydraulic conductivity. This means that the soil has a greater ability to transmit water compared to soils with low or medium hydraulic conductivity. Soils classified with "S" or "LS" are proficient at allowing water to flow through them, which is essential in understanding water movement in soils, drainage characteristics, and how these soils behave in agricultural or construction scenarios. Recognizing high hydraulic conductivity is crucial for effective soil management practices, including irrigation and drainage planning.