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Drawdown at Pumping Well Formula

GoDrawdown when Steady Flow of Unconfined Aquifer Formula

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The Drawdown at the Pumping Well refers to the term applied to the maximum lowering of the groundwater table caused by pumping or artesian flow. Check FAQs

s w = (H - h w)

s_w - Drawdown at the Pumping Well?H - Saturated Thickness of the Aquifer?h_w - Depth of Water in the Pumping Well?

Drawdown at Pumping Well Example

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Here is how the Drawdown at Pumping Well equation looks like with Values.

Here is how the Drawdown at Pumping Well equation looks like with Units.

Here is how the Drawdown at Pumping Well equation looks like.

5 = (35 - 30)

5m = (35m - 30m)

5 = (35 - 30)

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Drawdown at Pumping Well Solution

Follow our step by step solution on how to calculate Drawdown at Pumping Well?

FIRST Step Consider the formula

s w = (H - h w)

Next Step Substitute values of Variables

∴

s w = (35m - 30m)

Next Step Prepare to Evaluate

∴

s w = (35 - 30)

LAST Step Evaluate

∴

s w = 5m

Drawdown at Pumping Well Formula Elements

Variables

Drawdown at the Pumping Well

The Drawdown at the Pumping Well refers to the term applied to the maximum lowering of the groundwater table caused by pumping or artesian flow.

Symbol: s_w

Measurement: LengthUnit: m

Note: Value should be greater than 0.

Formulas to find Drawdown at the Pumping Well

Saturated Thickness of the Aquifer

The Saturated Thickness of the Aquifer refers to the vertical height of the aquifer in which the pore spaces are completely filled with water.

Symbol: H

Measurement: LengthUnit: m

Note: Value can be positive or negative.

Formulas to find Saturated Thickness of the Aquifer

Depth of Water in the Pumping Well

The Depth of Water in the Pumping Well refers to the well in which pumping is required to increase the formation pressure to allow the free production flow.

Symbol: h_w

Measurement: LengthUnit: m

Note: Value can be positive or negative.

Formulas to find Depth of Water in the Pumping Well

Other Formulas to find Drawdown at the Pumping Well

Go Drawdown when Steady Flow of Unconfined Aquifer

s w = \frac{Q u \cdot \ln (\frac{r}{R w})}{2 \cdot π \cdot T}

Other formulas in Approximate Equations category

Go Discharge when Drawdown at Pumping Well is Considered

Q u = 2 \cdot π \cdot T \cdot \frac{s w}{\ln (\frac{r}{R w})}

Go Transmissivity when Discharge at Drawdown is Considered

T = \frac{Q u \cdot \ln (\frac{r}{R w})}{2 \cdot π \cdot s w}

How to Evaluate Drawdown at Pumping Well?

Drawdown at Pumping Well evaluator uses Drawdown at the Pumping Well = (Saturated Thickness of the Aquifer-Depth of Water in the Pumping Well) to evaluate the Drawdown at the Pumping Well, The Drawdown at Pumping Well formula is defined as the term applied to maximum lowering of groundwater table caused by pumping or artesian flow. Drawdown at the Pumping Well is denoted by s_w symbol.

How to evaluate Drawdown at Pumping Well using this online evaluator? To use this online evaluator for Drawdown at Pumping Well, enter Saturated Thickness of the Aquifer (H) & Depth of Water in the Pumping Well (h_w) and hit the calculate button.

FAQs on Drawdown at Pumping Well

What is the formula to find Drawdown at Pumping Well?

The formula of Drawdown at Pumping Well is expressed as Drawdown at the Pumping Well = (Saturated Thickness of the Aquifer-Depth of Water in the Pumping Well). Here is an example- 5 = (35-30).

How to calculate Drawdown at Pumping Well?

With Saturated Thickness of the Aquifer (H) & Depth of Water in the Pumping Well (h_w) we can find Drawdown at Pumping Well using the formula - Drawdown at the Pumping Well = (Saturated Thickness of the Aquifer-Depth of Water in the Pumping Well).

What are the other ways to Calculate Drawdown at the Pumping Well?

Here are the different ways to Calculate Drawdown at the Pumping Well-

Drawdown at the Pumping Well=(Steady Flow of an Unconfined Aquifer*ln(Radius at the Edge of Zone of Influence/Radius of the Pumping Well))/(2*pi*Transmissivity of an Unconfined Aquifer)

Can the Drawdown at Pumping Well be negative?

No, the Drawdown at Pumping Well, measured in Length cannot be negative.

Which unit is used to measure Drawdown at Pumping Well?

Drawdown at Pumping Well is usually measured using the Meter[m] for Length. Millimeter[m], Kilometer[m], Decimeter[m] are the few other units in which Drawdown at Pumping Well can be measured.

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Drawdown at Pumping Well Formula

​GoDrawdown when Steady Flow of Unconfined Aquifer Formula

Drawdown at Pumping Well Example

Drawdown at Pumping Well Solution

Drawdown at Pumping Well Formula Elements

Other Formulas to find Drawdown at the Pumping Well

Other formulas in Approximate Equations category

How to Evaluate Drawdown at Pumping Well?

FAQs on Drawdown at Pumping Well

Variable Name

GoDrawdown when Steady Flow of Unconfined Aquifer Formula