Water supply
In hydrology, the term water supply describes the amount of water that occurs in a certain area for a certain period of time in the form of surface or groundwater as a component of the earth's water cycle .
Subdivision
- Potential water supply
- the difference between the long-term mean values of precipitation [P] and evaporation [ET]
- Stable water supply
- the potential water supply minus the rapidly flowing flood
- Regulated water supply
- water provided by storage management
Criteria for the availability of the water supply
- Hydrological
- is determined by the space-time processes of the water cycle and the loss of use; Quantity per time unit Q [m³ / s]
- Ecologically
- is determined by the quality class (water quality) and after a sustainable influence on ecosystems through water abstraction and use in the extraction area
- Technically
- is determined by the conditions of the holding, transport and processing as well as the current state of the art
- Economically
- is determined according to the economically justifiable expenditure for the development of water [€ / m²]
- Legal
- legal agreements, d. H. Ask who is allowed to use which water resource