W Water cycle Water is the lifeblood of the weather. It moves into the atmosphere as water vapour through evaporation from water surfaces or through transpiration from plants.
Water falling on land is destined for one of many fates.
If it falls as snow it can spend some time in a snow or ice-field before moving off as a glacier and perhaps eventually becoming part of an iceberg. Or it might melt and join a river. If it falls as liquid drops it might be retained in the soil as moisture for plants, or it might join a river, or be stored for a time in a lake or reservoir. Water Resources Water available, or capable of being made available, for use in sufficient quantity and quality at a location and over a period of time appropriate for an identifiable demand. Water Resources Assessment Determination of the sources, extent, dependability and quality of water resources for their utilisation and control.