Sheet Flow Vs Shallow Concentrated Flow - Surface flow is represented by the lines with arrows showing travel along the surface Surface flow takes the form of sheet flow, shallow concentrated flow, and/or channel flow. Shallow concentrated flow can occur as rills or gullies and are collectively called concentrated flow paths (cfps). Open channels are assumed to begin where surveyed cross section information has been obtained, where channels are visible on aerial photographs, or where blue lines (indicating streams) appear on usgs quadrangle sheets. Web sheet flow usually becomes shallow concentrated flow after around 100 feet. These cfps often occur in draws and swales that occur naturally due to topography.
These cfps often occur in draws and swales that occur naturally due to topography. Surface flow is represented by the lines with arrows showing travel along the surface Surface flow takes the form of sheet flow, shallow concentrated flow, and/or channel flow. Shallow concentrated flow can occur as rills or gullies and are collectively called concentrated flow paths (cfps). Open channels are assumed to begin where surveyed cross section information has been obtained, where channels are visible on aerial photographs, or where blue lines (indicating streams) appear on usgs quadrangle sheets. Web sheet flow usually becomes shallow concentrated flow after around 100 feet.