Throughfall and Stemflow
Throughfall = Intercepted water falls to the surface through gaps in the vegetation or drops from leaves and twigs. Stemflow = Intercepted water travels/trickles down the stems and trunks to the surface
Infiltration
The movement of water down into the soil from the surface (absorption, soaking, seepage)
Percolation
The downward movement of infiltrated water through pores in the soil and underlying permeable rock under the influence of gravity
Overland flow
Movement of water across the surface as it cannot be absorbed by the soil
Throughflow
Horizontal, downslope movement of water through soil percolines under the influence of gravity
Groundwater flow
Movement of water from groundwater store to the stream under the influence of gravity