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Drawdown given Piezometric Head 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' = H - h

s' - Possible Drawdown in Confined Aquifer?H - Initial Constant Piezometric Head?h - Drawdown?

Drawdown given Piezometric Head Example

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Here is how the Drawdown given Piezometric Head equation looks like with Values.

Here is how the Drawdown given Piezometric Head equation looks like with Units.

Here is how the Drawdown given Piezometric Head equation looks like.

0.2 = 10 - 9.8

0.2m = 10m - 9.8m

0.2 = 10 - 9.8

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Drawdown given Piezometric Head Solution

Follow our step by step solution on how to calculate Drawdown given Piezometric Head?

FIRST Step Consider the formula

s' = H - h

Next Step Substitute values of Variables

∴

s' = 10m - 9.8m

Next Step Prepare to Evaluate

∴

s' = 10 - 9.8

Next Step Evaluate

∴

s' = 0.199999999999999m

LAST Step Rounding Answer

∴

s' = 0.2m

Drawdown given Piezometric Head 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

Initial Constant Piezometric Head

Initial Constant Piezometric Head is the initial pressure head in a groundwater system at a specific point before any external influences or changes occur.

Symbol: H

Measurement: LengthUnit: m

Note: Value can be positive or negative.

Formulas to find Initial Constant Piezometric Head

Drawdown

Drawdown is the difference in height between the natural water table (or potentiometric surface) and the water level in a well after groundwater has been extracted.

Symbol: h

Measurement: LengthUnit: m

Note: Value can be positive or negative.

Formulas to find Drawdown

Other formulas in Unsteady Flow in a Confined Aquifer category

Go Drawdown

s t = (\frac{Q}{4 \cdot π \cdot T}) \cdot \ln (\frac{2.2 \cdot T \cdot t}{r^{2} \cdot S})

Go Drawdown at Time Interval 't1'

s 1 = s 2 - ((\frac{Q}{4 \cdot π \cdot T}) \cdot \ln (\frac{t 2}{t 1}))

Go Drawdown at Time Interval 't2'

s 2 = ((\frac{Q}{4 \cdot π \cdot T}) \cdot \ln (\frac{t 2}{t 1})) + s 1

Go Equation for Storage Coefficient

S = 2.25 \cdot T \cdot \frac{t 0}{r^{2}}

How to Evaluate Drawdown given Piezometric Head?

Drawdown given Piezometric Head evaluator uses Possible Drawdown in Confined Aquifer = Initial Constant Piezometric Head-Drawdown to evaluate the Possible Drawdown in Confined Aquifer, The Drawdown given Piezometric Head formula is defined as the change in groundwater level due to an applied stress at a point distance from the pumping well. Possible Drawdown in Confined Aquifer is denoted by s' symbol.

How to evaluate Drawdown given Piezometric Head using this online evaluator? To use this online evaluator for Drawdown given Piezometric Head, enter Initial Constant Piezometric Head (H) & Drawdown (h) and hit the calculate button.

FAQs on Drawdown given Piezometric Head

What is the formula to find Drawdown given Piezometric Head?

The formula of Drawdown given Piezometric Head is expressed as Possible Drawdown in Confined Aquifer = Initial Constant Piezometric Head-Drawdown. Here is an example- 0.2 = 10-9.8.

How to calculate Drawdown given Piezometric Head?

With Initial Constant Piezometric Head (H) & Drawdown (h) we can find Drawdown given Piezometric Head using the formula - Possible Drawdown in Confined Aquifer = Initial Constant Piezometric Head-Drawdown.

Can the Drawdown given Piezometric Head be negative?

Yes, the Drawdown given Piezometric Head, measured in Length can be negative.

Which unit is used to measure Drawdown given Piezometric Head?

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

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Drawdown given Piezometric Head Formula

Drawdown given Piezometric Head Example

Drawdown given Piezometric Head Solution

Drawdown given Piezometric Head Formula Elements

Other formulas in Unsteady Flow in a Confined Aquifer category

How to Evaluate Drawdown given Piezometric Head?

FAQs on Drawdown given Piezometric Head

Variable Name