Soil Water Processes

General Soil Water Processes, Rural versus Urban

There are three physical processes for the movement of soil water: entry, transmission, and storage. Entry, also known as infiltration, occurs at the water-ground surface boundary. Transmission is the vertical and horizontal percolation that can occur throughout the entire depth of the soil layer. Storage can occur throughout the soil profile and is manifested as increased soil moisture.

Environmental conditions that affect these three processes are broadly broken down into two major categories: natural influences and human activity influences. Natural processes can have a variety of influences, but human activity typically results in less water entering the soil profile and thus more runoff at the ground surface.