Precipitation - water in any form that comes from the clouds (e.g. - snow, rain,
sleet, hail)
Interception - this is where plants, trees, or buildings collect the precipitation
Stem Flow - where the precipitation flows along the stems of a plant to the ground
Infiltration - where the water filters through the ground and the tiny pores in the
soil
Percolation - where the water moves downwards through the soil
Over Land Flow - this happens when either the soil is impermeable or saturated
and the water flows over the top of it
Ground Water Flow - this is the movement of water sideways through the soil
Underground Flow - slow movement of water through the ground
Transpiration - where the water goes up through the plants and is released into
the air through the leaves
Evaporation - where the water is evaporated straight from the ground or from the
sea
Evapo-transpiration - here, the water vapour consists of both evaporated and
transpired water