elss definitions

any processes of lateral flow into the sea/river. the three types are overland flow, throughflow and groundwater flow

rainfall runs off ground surface.

either because soil is saturated or intensity of rainfall exceeds infiltration capacity

the speed at which water infiltrates into the soil

the lateral movement of water through soils

the lateral movement of water within aquifers

the conversion of vapour/gas into a liquid

the temperature at which water vapour in the air turns into liquid water

clouds are visible aggregates of water or ice (or both) that float in the free air. They form when water vapour is cooled to dew point.

breakdown of rocks in situ by chemical, physical and biological processes

occurs when organic matter reacts or burns in the presence of oxygen

aquifers are permeable or porous water-bearing rocks e.g. chalk, which are great reservoirs of water.

describes the upper level of groundwater. Its height fluctuates depending on water abstraction by people (loss) and water recharge (gain). its height fluctuates seasonally.