Which term refers to the unchanneled flow of water over a soil surface?

Which term refers to the unchanneled flow of water over a soil surface?

• A. Confluence
• B. Reservoir
• C. Sheetwash
• D. Clouds

Answer: (C)

Unchanneled surface flow is water moving downslope across the soil as a relatively uniform sheet before it concentrates into channels. This exactly describes sheetwash: a sheet of water flowing over the ground rather than being confined to a defined channel. It often occurs when rainfall exceeds the soil’s infiltration capacity, so water cannot infiltrate quickly enough and spreads over the surface. As the flow continues and deepens, it may later break into rills and channels, but in its initial form it remains unchanneled. This term is distinct from confluence (where streams join), reservoir (a storage body of water), and clouds (water in the atmosphere).

Unchanneled surface flow is water moving downslope across the soil as a relatively uniform sheet before it concentrates into channels. This exactly describes sheetwash: a sheet of water flowing over the ground rather than being confined to a defined channel. It often occurs when rainfall exceeds the soil’s infiltration capacity, so water cannot infiltrate quickly enough and spreads over the surface. As the flow continues and deepens, it may later break into rills and channels, but in its initial form it remains unchanneled. This term is distinct from confluence (where streams join), reservoir (a storage body of water), and clouds (water in the atmosphere).