drawdown

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drawdown

[′drȯ‚dau̇n]
(graphic arts)
In inkmaking, a procedure for obtaining a rough estimation of a color shade in which a small sample of ink is placed on a piece of paper and spread with a spatula to yield a thin film of ink.
(hydrology)
The magnitude of the change in water surface level in a well, reservoir, or natural body of water resulting from the withdrawal of water.
(petroleum engineering)
The difference between the static and the flowing bottom-hole pressure.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

drawdown

The distance by which the groundwater level is lowered as a result of pumping.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
References in classic literature ?
Reserve on such a point would be not only useless, but draw down treble misery on us all."
Assignment of the Aa2 rating reflects the district's sizable and mature tax base beneficially located in the Chicago (Ba1 negative) metropolitan area; concentrated tax base; above average socioeconomic characteristics; satisfactory reserve levels despite recent narrowed reserves as the result of planned draw downs in operating funds; and modest debt and pension profile.
Draw downs are still initiated only at Enerji's request.