Interception

Interception is defined as the portion of gross precipitation which wets and adheres to above ground objects until it evaporates, returning to the atmosphere. The amount of water intercepted is a function of the storm character, the season of the year, and the species, age and density of the prevailing vegetation.

Rain water retained by the plant canopy may contribute to the satisfaction of the meteorological evaporative demand, resulting in a reduction in use of soil moisture. This term is not applicable to the SFWMM.

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