EffectsĪquifer drawdown or overdrafting and the pumping of fossil water may be a contributing factor to sea-level rise. In either case, drawdown is the change in head or water level relative to background condition, indicating the difference in head which has occurred at a given location relative an initial time at the same location.Ī record of hydraulic head through time is more generally called a hydrograph (in both groundwater and surface water). In surface water hydrology and civil engineering, drawdown refers to the lowering of the water level in a man-made reservoir or tank.The increased costs drew our budget down. To deplete something by consuming or spending: The embargo drew down our food reserves. The stagehand drew the curtain down after the first act. In subsurface hydrogeology, drawdown is the change in hydraulic head observed at a well in an aquifer, typically due to pumping a well as part of an aquifer test or well test. To pull something down, especially by extending it: Draw down the shades so I can get dressed.In water-related science and engineering there are two similar but distinct definitions in use for drawdown. volatility also extend to the drawdown range: The maximum drawdown for the period. Words with similar meaning of Drawdown at Thesaurus dictionary Synonym.tech. Unsourced material may be challenged and removed. Vanguard Total Bond Market Index (MUTF review synonym Vanguard. Best synonyms for 'drawdown' are 'downsizing', 'reduction' and 'decrease'. Drawdown : Lowering of level of water in a well due to pumping. Please help improve this article by adding citations to reliable sources. Synonyms: progressive cavity pump, screw pump. This article needs additional citations for verification.
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