Water flow with a relatively thin and uniform depth.
Water flow over the ground surface (surface run-off) in a more or less continuous sheet (Society of American Foresters 1983).
Runoff which flows over the ground surface as a thin even layer, not concentrated in a channel or pipe.
Very shallow overland discharge.
The portion of precipitation that moves initially as overland flow in very shallow depths before eventually reaching a stream channel
Any flow spread out and not confined; i.e., flow across a flat open field.
Flow over plane, sloped surfaces in a thin layer.