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Drawdown in aquifer caused by pumping at any point in aquifer Formula

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Possible Drawdown in Confined Aquifer is the drawdown that would have occurred if the aquifer had been confined (that is, if no dewatering had occurred). Check FAQs

s' = q \cdot \frac{t}{τ \cdot S \cdot r^{2}}

s' - Possible Drawdown in Confined Aquifer?q - Pumping Rate?t - Time Period?τ - Transmissivity?S - Storage Coefficient?r - Distance from Pumping Well?

Drawdown in aquifer caused by pumping at any point in aquifer Example

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Here is how the Drawdown in aquifer caused by pumping at any point in aquifer equation looks like with Values.

Here is how the Drawdown in aquifer caused by pumping at any point in aquifer equation looks like with Units.

Here is how the Drawdown in aquifer caused by pumping at any point in aquifer equation looks like.

0.1961 = 7 \cdot \frac{30}{1.4 \cdot 85 \cdot 3^{2}}

0.1961m = 7m³/s \cdot \frac{30s}{1.4m²/s \cdot 85 \cdot {3m}^{2}}

0.1961 = 7 \cdot \frac{30}{1.4 \cdot 85 \cdot 3^{2}}

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Drawdown in aquifer caused by pumping at any point in aquifer Solution

Follow our step by step solution on how to calculate Drawdown in aquifer caused by pumping at any point in aquifer?

FIRST Step Consider the formula

s' = q \cdot \frac{t}{τ \cdot S \cdot r^{2}}

Next Step Substitute values of Variables

∴

s' = 7m³/s \cdot \frac{30s}{1.4m²/s \cdot 85 \cdot {3m}^{2}}

Next Step Prepare to Evaluate

∴

s' = 7 \cdot \frac{30}{1.4 \cdot 85 \cdot 3^{2}}

Next Step Evaluate

∴

s' = 0.196078431372549m

LAST Step Rounding Answer

∴

s' = 0.1961m

Drawdown in aquifer caused by pumping at any point in aquifer Formula Elements

Variables

Possible Drawdown in Confined Aquifer

Possible Drawdown in Confined Aquifer is the drawdown that would have occurred if the aquifer had been confined (that is, if no dewatering had occurred).

Symbol: s'

Measurement: LengthUnit: m

Note: Value can be positive or negative.

Formulas to find Possible Drawdown in Confined Aquifer

Pumping Rate

The Pumping Rate is referred as volume of water (or other fluid) that is pumped per unit of time. It’s typically measured in units like liters per second (L/s) or cubic meters per hour (m³/h).

Symbol: q

Measurement: Volumetric Flow RateUnit: m³/s

Note: Value can be positive or negative.

Formulas to find Pumping Rate

Time Period

Time Period (pumping has been in Progress) or Time can be defined as the ongoing and continuous sequence of events that occur in succession, from the past through the present to the future.

Symbol: t

Measurement: TimeUnit: s

Note: Value can be positive or negative.

Formulas to find Time Period

Transmissivity

The Transmissivity refers to the measure of how much water can be transmitted horizontally through an aquifer is the product of the hydraulic conductivity of the aquifer and its saturated thickness.

Symbol: τ

Measurement: Kinematic ViscosityUnit: m²/s

Note: Value should be greater than 0.

Formulas to find Transmissivity

Storage Coefficient

Storage Coefficient is the volume of water released from storage per unit decline in hydraulic head in the aquifer, per unit area of the aquifer.

Symbol: S

Measurement: NAUnit: Unitless

Note: Value can be positive or negative.

Formulas to find Storage Coefficient

Distance from Pumping Well

Distance from Pumping Well to the point where drawdown occurs.

Symbol: r

Measurement: LengthUnit: m

Note: Value can be positive or negative.

Formulas to find Distance from Pumping Well

Other formulas in Single Well Tests category

Go Total Drawdown in Pumping Well

s t = s + CQ n

Go Total Drawdown in Pumping Well expressed given Factors related to Hydraulic Characteristics

s t = B \cdot q + (C \cdot q^{2})

Go Drawdown in aquifer for total drawdown

s = s t - CQ n

Go Well Loss for Total Drawdown

CQ n = s t - s

How to Evaluate Drawdown in aquifer caused by pumping at any point in aquifer?

Drawdown in aquifer caused by pumping at any point in aquifer evaluator uses Possible Drawdown in Confined Aquifer = Pumping Rate*Time Period/(Transmissivity*Storage Coefficient*Distance from Pumping Well^2) to evaluate the Possible Drawdown in Confined Aquifer, The Drawdown in aquifer caused by pumping at any point in aquifer is a change in groundwater level due to an applied stress. Possible Drawdown in Confined Aquifer is denoted by s' symbol.

How to evaluate Drawdown in aquifer caused by pumping at any point in aquifer using this online evaluator? To use this online evaluator for Drawdown in aquifer caused by pumping at any point in aquifer, enter Pumping Rate (q), Time Period (t), Transmissivity (τ), Storage Coefficient (S) & Distance from Pumping Well (r) and hit the calculate button.

FAQs on Drawdown in aquifer caused by pumping at any point in aquifer

What is the formula to find Drawdown in aquifer caused by pumping at any point in aquifer?

The formula of Drawdown in aquifer caused by pumping at any point in aquifer is expressed as Possible Drawdown in Confined Aquifer = Pumping Rate*Time Period/(Transmissivity*Storage Coefficient*Distance from Pumping Well^2). Here is an example- 0.196078 = 7*30/(1.4*85*3^2).

How to calculate Drawdown in aquifer caused by pumping at any point in aquifer?

With Pumping Rate (q), Time Period (t), Transmissivity (τ), Storage Coefficient (S) & Distance from Pumping Well (r) we can find Drawdown in aquifer caused by pumping at any point in aquifer using the formula - Possible Drawdown in Confined Aquifer = Pumping Rate*Time Period/(Transmissivity*Storage Coefficient*Distance from Pumping Well^2).

Can the Drawdown in aquifer caused by pumping at any point in aquifer be negative?

Yes, the Drawdown in aquifer caused by pumping at any point in aquifer, measured in Length can be negative.

Which unit is used to measure Drawdown in aquifer caused by pumping at any point in aquifer?

Drawdown in aquifer caused by pumping at any point in aquifer is usually measured using the Meter[m] for Length. Millimeter[m], Kilometer[m], Decimeter[m] are the few other units in which Drawdown in aquifer caused by pumping at any point in aquifer can be measured.

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Drawdown in aquifer caused by pumping at any point in aquifer Formula

Drawdown in aquifer caused by pumping at any point in aquifer Example

Drawdown in aquifer caused by pumping at any point in aquifer Solution

Drawdown in aquifer caused by pumping at any point in aquifer Formula Elements

Other formulas in Single Well Tests category

How to Evaluate Drawdown in aquifer caused by pumping at any point in aquifer?

FAQs on Drawdown in aquifer caused by pumping at any point in aquifer

Variable Name