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Static level is the level of water in the well when no water is being removed from the well by pumping. [8] Water table is the upper level of the zone of saturation, an underground surface in which the soil or rock is permanently saturated with water. [9] Well yield is the volume of water per unit time that is produced by the well from pumping. [8]
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Specific yield, also known as the drainable porosity, is a ratio, less than or equal to the effective porosity, indicating the volumetric fraction of the bulk aquifer volume that a given aquifer will yield when all the water is allowed to drain out of it under the forces of gravity:
Often the well efficiency is determined from this sort of test, this is a percentage indicating the fraction of total observed drawdown in a pumping well which is due to aquifer losses (as opposed to being due to flow through the well screen and inside the borehole). A perfectly efficient well, with perfect well screen and where the water flows ...
where s is the drawdown (change in hydraulic head at a point since the beginning of the test in units of distance), u is a dimensionless parameter, Q is the discharge (pumping) rate of the well (volume per unit time), T and S are the transmissivity and storativity of the aquifer around the well (distance squared per unit time and dimensionless ...
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 [l/s]. [1] Measurement methods include volume–filling-time measurement and water level measurement.
Billy Bob Thornton is more than happy to play a foul-mouthed Santa (“Bad Santa”) or a high school football coach (“Friday Night Lights”) or a NASA scientist (“Armageddon”), but one ...
ISO/IEC 19752 Information technology — Method for the determination of toner cartridge yield for monochromatic electrophotographic printers and multi-function devices that contain printer components is an ISO/IEC standard method for the determination of toner cartridge yield for monochrome laser printers, introduced in June 2004 and updated ...