ruissellement pluvial

CONT: [...] ruissellement pluvial sur des versants assez raides.

CONT: Basins and watersheds are geographic areas from which all water (i.e. precipitation runoff, irrigation channels, groundwater, ditches, rivers, lakes, etc.) flows toward and drains through a single common outlet.
OBS: Runoff may be classified according to speed of appearance after rainfall or melting snow as direct runoff or base runoff, and according to source as surface runoff, storm interflow, or ground-water runoff.