The term yield is used to describe the volume of water escaping from a
spring over a certain period of time, the
discharge quantity of which is measured in
/s[Murawski & Meyer (2010), p. 133. Keywords ''Quelle'', ''Quellschüttung''.] Measurement methods include volume–filling-time measurement and
water level
Water level, also known as gauge height or stage, is the elevation of the free surface of a sea, stream, lake or reservoir relative to a specified vertical datum.
Over long distances, neglecting external forcings (such as wind), water level ten ...
measurement.
The discharge of a spring can fluctuate to a greater or lesser extent depending on precipitation and evaporation.
Karst spring
A karst spring or karstic spring is a Spring (hydrology), spring (exsurgence, outflow of groundwater) that is part of a karst hydrological system.
Description
Because of their often conical or inverted bowl shape, karst springs are also known i ...
s show particularly large time-dependent differences in the discharge.
References
Bibliography
Murawski, Hans and Wilhelm Meyer (2010). ''Geologisches Wörterbuch''. 12th edn. Heidelberg: Spectrum.
Limnology
Hydrogeology
{{hydrology-stub