Watershed Processes2012

Watershed Processes2012 - Transpiration Watershed Terms...

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1 Precipitation Interception Transpiration Watershed Processes Stem Flow Vadose Zone/ Unsaturated zone Capillary fringe Water Table Zone of Saturation Runoff Infiltration Groundwater Flow Baseflow Interflow Evaporation Depression storage Watershed Terms Interception: Part of precipitation captured on vegetation. This water may directly evaporate from the plant ( interception loss), Prec run down the stem of the plant as stemflow , or fall from the plant directly onto the ground. Interception Stem Flow ipitation Overland Flow : Part of precipitation that flows directly over the land surface. Aka Horton overland flow Infiltration : Water moving from the land surface into the soil. Occurs under gravity drainage, so flow is dominant vertical. Infiltration Vadose Zone : Zone between the ground surface and the water table where the pore spaces are filled with both water and air (aka zone of aeration, unsaturated zone ). Capillary Fringe : the lower portion of the vadose where water is held in the pores by capillary action. Water in this zone is close to saturation. Saturation Zone : Zone in soil or rock where the pore spaces are completely filled with water. The water table defines the top of the saturation zone of an unconfined aquifer.
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Watershed Processes2012 - Transpiration Watershed Terms...

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