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| Question | Answer |
| PRECIPITATION | - The only input of the drainage basin hydrological cycle. - Rain, snow, hail, dew, and frost. |
| INTERCEPTION | - A water storage in which water lands on vegetation, or on other structures, before it reaches the soil. - Only temporary because the water is evaporated easily. |
| VEGETATION STORAGE | - A storage where water is taken up by plants and vegetation. |
| SURFACE STORAGE | - Water stored on surfaces, such as the surface of the ground, or on concrete. - Examples include puddles and lakes. |
| GROUNDWATER STORAGE | - Water stored in the ground, either as soil moisture or in rocks. - Percolation can lead to the creation of aquifers. |
| CHANNEL STORAGE | - Precipitation that falls directly into the river channel. - Water held in the river channel or stream. |
| SURFACE RUNOFF | - Water which flows over the land. |
| THROUGHFALL | - Water which falls from the leaves of trees (etc.) to other leaves and branches. |
| STEMFLOW | - Water running down a plant stem or tree trunk. |
| THROUGHFLOW | - The movement of water through the soil. |
| INFILTRATION | - Water soaking into the soil. - Infiltration rates are influenced by soil type, soil structure, and soil saturation. |
| PERCOLATION | - Water seeping down through soil, into the water table, and into permeable rock. |
| GROUNDWATER FLOW | - Water flowing slowly below the water table, through permeable rock. Very slow. |
| BASEFLOW | - Groundwater flow which feeds into river channels from river banks and river beds. |
| INTERFLOW | - Water flowing downhill through permeable rock, above the water table. - The flow between throughflow and groundwater flow. |
| CHANNEL FLOW | - Water flowing in the river or stream itself. - River discharge. |
| THE WATER TABLE | - The top surface of the zone of saturation. |
| ZONE OF SATURATION | - The area of soil or rock where all the pores in the geology are full of water. |
| EVAPORATION | - The process by which water is heated up by the sun's energy, and is converted into water vapour (gas). |
| TRANSPIRATION | - Evaporation from plant leaves and vegetation. |
| EVAPOTRANSPIRATION | - The combination of evaporation and transpiration. |
| RIVER DISCHARGE | - The volume of water that flows in a river per second. - Measured in cubic metres. |
| PET | - Potential Evapotranspiration. |
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