The difference between the water level in a well before pumping starts (static level) and the water level in a well during pumping, usually measured in feet or meters. Drawdown can be measured in the pumping well itself and in other nearby wells (observation wells). Also, for flowing wells, the reduction of the pressure head as a result of the discharge of water. See also, interference.

Drawdown - The vertical drop of the water level in a well during groundwater pumping; the difference between a static water level and a subsequent, lowered level (pumping level).

a lowering of the groundwater surface caused by pumping.

The vertical distance of the free water surface or ground water face after removal of water.

A lowering of the groundwater level caused by pumping.

the drying phase of a wetland when water declines leaving exposed soil.

Drawdown is a measure of the amount of lowering of the water level in a well when pumping is in progress.

In the context of this FR/EIS, drawdown means returning the lower Snake River to its near-natural condition via dam breaching.

A lowering of the water table around a producing well. The drawdown at any given location will be the vertical change between the original water table and the level of the water table reduced by pumping.

Drawdown is the distance the water level is lowered as a result of pumping.

the gradual reduction in water level in a storm water basin due to the combined effect of infiltration and evaporation.

The difference between the static water level and the pumping water level in a well; determined by the ability of the aquifer to replace the amount of water that is being pumped.

The measured drop in water level in or near a well caused by pumping groundwater from the well.

Reduction of the water level of a reservoir.

Decreasing the level of standing water in a water body to expose bottom sediments and rooted plants. Water level drawdown can be accomplished by physically releasing a volume of water through a controlled outlet structure or by preventing recharge of a system from a primary external source.

a lowering of the ground-water surface caused by pumping.

Lowering of the level of groundwater; for example, when a work area is dewatered for construction.

The decline in ground-water level caused by the withdrawal of water from an aquifer.

the distance between the static water level and the pumping water level in a well or an aquifer.

The depression or decline of the water level or potentiometric surface in a pumped well or in nearby wells caused by pumping. At the well, it is the vertical distance between the static and the pumping level.

When a well is pumped, water is removed from the aquifer surrounding the well, and the water table or piezometric surface is lowered. The drawdown at a given point is the distance the water level is dropped.

The release of water from a reservoir for power generation, flood control, irrigation or other water management activity.

The process of lowering the water level in a reservoir. Drawdown is usually measured in feet.

The distance the water surface of a reservoir is lowered from a given elevation as the result of releasing water. Drawdown can be expressed in terms of the acre-feet of stored water released.

(1)lowering of the watertable, surface water, or piezometric surface resulting from the withdrawal of water from a well or drain; (2) the elevation of the static water level (at the well) at a given discharge List of Glossary Terms

when the water level in a marsh or pond is lowered to expose the bottom sediment.

The distance the water level drops below the standing water level while the pump is operating.

The vertical distance between the water level in a well before pumping and the water level in the well during pumping.

lowering the water table due to withdrawal of groundwater as from a well.

The lowering of the level of the groundwater table that occurs as a work area is dewatered for construction. Also lowering water behind a dam.

the vertical distance ground water elevation is lowered, or the amount pressure head is reduced, due to the removal of ground water. Also the decline in potentiometric surface caused by the withdrawal of water from a hydrogeologic unit.

the process of reducing allowable annual cuts to a sustainable level.

the change in potentiometric head caused by the pumping of groundwater.

The lowering of a reservoir or lake by controlled withdrawal.

A lowering of the surface water elevation of a stream as it approaches and flows through a bridge or culvert. It is a measure of the difference of the water surface elevation upstream from the bridge or culvert and a short distance downstream from their enrances.

The phenomenon in which the water table around a well drops because the users are pumping water out of the well faster than it flows in from the surrounding aquifer.

(1) The act, process, or result of depleting, as a liquid or body of water as in the lowering of the water surface level due to release of water from a reservoir. (2) The magnitude of lowering of the surface of a body of water or of its piezometric surface as a result of withdrawal of the release of water therefrom. (3) The decline of water below the static level during pumping. (4) (Water Table) The lowering of the elevation of the Groundwater Table, usually from pumping wells, but can occur naturally during periods of prolonged drought. At the well, it is the vertical distance between the static and the pumping level.

The difference in elevation between the water surface elevation at a constriction in a stream or conduit and the elevation that would exist if the constriction were absent.  Drawdown also occurs at changes from mild to steep channel slopes and weirs or vertical spillways.

The magnitude of the lowering of a water surface or water table, e.g. in or adjacent to a pumping or observation well.

the measured reduction of the water table due to groundwater extraction from the pumping of municipal, irrigation and private water wells

The difference between static and flowing bottom-hole pressures.

Lowering of the ground water surface or the piezometric pressure caused by pumping, measured as the difference between the original ground-water level and the current pumping level after a period of pumping.

The drop in water table elevation from an initial stable configuration, generally caused by pumping.

Releasing water from a hydroelectric project to lower the reservoir elevation. Drawdowns are used for energy production or to create additional space in the reservoir to hold back floodwaters; to reduce the cross-sectional area of the reservoir, increasing the current to aid downstream fish passage; and to expose normally submerged structures for maintenance.

The resultant lowering of water surface level due to the release of water from the reservoir. See Illustration.

The decline in the water table level or piezometric level versus distance from a pumping well, or versus time at a given distance from a pumping well, resulting from the continuous pumping from a well discharging at a known rate.

The lowering of water levels stored behind a dam or other control structure. Change in reservoir elevation during a specified time interval.

lowering of water levels in rivers, lakes, or underground aquifers due to pumping or artesian flow. Drawdown may leave unsupported banks or poorly packed earth that can cause landslides.

1. The drop in the water table or level of water in the ground when water is being pumped from a well. 2. The amount of water used from a tank or reservoir. 3. The drop in the water level of a tank or reservoir.

In water-related science and engineering there are two similar but distinct definitions in use for drawdown

This is the percentage of loss that a fund incurs from its highest value to its lowest value. The maximum drawdown over time is sometimes a way to measure the risk of a fund.

A decrease in the value of an account. It includes "real losses" from securities sold and "paper losses" which are declines in value of securities currently held. As a measure of risk, drawdowns are measured from peak-to-trough. Peaks are set when the account reaches a new high and the trough is the lowest value between two peaks, i.e., in a given period, an account with an initial value of 10K, going to a maximum of 15K, dropping to 9K and ending at 16K; will have a peak-to-trough drawdown of 1-(9/15) = 1-0.60 = 0.40 or 40

A Drawdown is any losing period during an investment record. It is defined as the percent retrenchment from an equity peak to an equity valley. A Drawdown is in effect from the time an equity retrenchment begins until a new equity high is reached (i.e. In terms of time, a drawdown encompasses both the period from equity peak to equity valley (Length) and the time from the equity valley to a new equity high (Recovery).).

The magnitude of a decline in account value, either in percentage or dollar terms, as measured from peak to subsequent trough. For example, if a trader's account increased in value from $10,000 to $20,000, then dropped to $15,000, then increased again to $25,000, that trader would have had a maximum drawdown of $5,000 (incurred when the account declined from $20,000 to $15,000) even though that trader's account was never in a loss position from inception.

that's the magnitude of a decline in account value which can be expressed in percentage or dollar terms. This value is measured from peak to subsequent. Here is an example your account goes up in value from $10,000 to $20,000, after that it goes down in the opposite direction to $15,000, then goes up again to $25,000. In this case you are having a maximum drawdown of $5,000 (incurred when the account declined from $20,000 to $15,000) despite the fact that your account didn't get in a loss position from inception.

The percentage loss that a fund incurs from its peak net asset value to its lowest value. The maximum drawdown over a significant period is sometimes employed as a means of measuring the risk of a vehicle. Usually expressed as a percentage decline in net asset value.

drop dual listing

A drawdown refers to any peak-to-valley decline a fund has suffered, and usually is quoted as the percentage decline from the peak to the trough.

Drawdown is the measure of the decline from a historical peak in some variable (e.g., the variable of interest might be the cumulative profit since inception from the purchase of a share of common stock).

In inkmaking, a term used to describe ink chemist's method of roughly determining color shade. A small glob of ink is placed on paper and drawn down with the edge of a putty knife spatula to get a thin film of ink.

Sample of specified inks applied to the substrate specified for a job. Also called pulldown.

Sample of inks specified for a job applied to the substrate specified for a job.

a popular fund-raising technique used by many non-profits

The disbursement of loan funds provided by the Bank.

A laboratory procedure wherein a liquid is “drawn down” over a standard substrate with a calibrated rod that spreads the liquid at a specified wet thickness. Used to maintain standard thickness of material for testing and quality control.

Debiting of loan funds at settlement

The withdrawal of funds from an account established for a specific purpose (e.g., drawing funds against a letter of credit, a federal grant, or an escrow account).

The disbursement of loan funds, especially referring to lines of credit where you can use the funds as required.

The disbursement of mortgage funds provided by the Bank.

When investors agree to provide fund, all the funding may not be needed at once. Some is used as "drawn down" later.

The process by which a grantee requests and receives federal funds.

A transaction method that allows a customer to authorize one bank to wire in funds from a second bank. Use of drawdowns centralizes transaction decisions and cash flow to a single bank.

The debiting of the loan at settlement or funding.

The continual drawing or use of some or all of the funds available under a given line of credit.

another term for borrowing funds

This is when the approved loan funds are provided to you and deposited in your bank account, or used by you. For example, when you borrow money to buy a house, and the loan is approved, the drawdown occurs when you pay for the house using the money borrowed from the bank.

the payment of loan funds from a Bank