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Observed drawdown in unconfined 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' = s - (\frac{s^{2}}{2 \cdot b})

s' - Possible Drawdown in Confined Aquifer?s - Observed Drawdown in the Unconfined Aquifer?b - Aquifer Thickness?

Observed drawdown in unconfined aquifer Example

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Here is how the Observed drawdown in unconfined aquifer equation looks like with Values.

Here is how the Observed drawdown in unconfined aquifer equation looks like with Units.

Here is how the Observed drawdown in unconfined aquifer equation looks like.

2.7 = 3 - (\frac{3^{2}}{2 \cdot 15})

2.7m = 3m - (\frac{{3m}^{2}}{2 \cdot 15m})

2.7 = 3 - (\frac{3^{2}}{2 \cdot 15})

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Observed drawdown in unconfined aquifer Solution

Follow our step by step solution on how to calculate Observed drawdown in unconfined aquifer?

FIRST Step Consider the formula

s' = s - (\frac{s^{2}}{2 \cdot b})

Next Step Substitute values of Variables

∴

s' = 3m - (\frac{{3m}^{2}}{2 \cdot 15m})

Next Step Prepare to Evaluate

∴

s' = 3 - (\frac{3^{2}}{2 \cdot 15})

LAST Step Evaluate

∴

s' = 2.7m

Observed drawdown in unconfined 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

Observed Drawdown in the Unconfined Aquifer

Observed Drawdown in the Unconfined Aquifer is the reduction in hydraulic head observed at a well in an aquifer.

Symbol: s

Measurement: LengthUnit: m

Note: Value can be positive or negative.

Formulas to find Observed Drawdown in the Unconfined Aquifer

Aquifer Thickness

The Aquifer Thickness referred as vertical distance between the top and bottom boundaries of an aquifer, typically measured in feet or meters.

Symbol: b

Measurement: LengthUnit: m

Note: Value should be greater than 0.

Formulas to find Aquifer Thickness

Other formulas in Source of Water Derived from Wells category

Go Natural discharge when discharge exceeds recharge

D = R - ΔS

Go Natural discharge when recharge exceeds discharge

D = R - ΔS

Go Equation for recharge when recharge exceeds discharge

R = D + ΔS

Go Balance equation when reduction in natural discharge equal rate of withdrawal

R = (D - ΔD) + Q

How to Evaluate Observed drawdown in unconfined aquifer?

Observed drawdown in unconfined aquifer evaluator uses Possible Drawdown in Confined Aquifer = Observed Drawdown in the Unconfined Aquifer-((Observed Drawdown in the Unconfined Aquifer^2)/(2*Aquifer Thickness)) to evaluate the Possible Drawdown in Confined Aquifer, Observed drawdown in unconfined aquifer can be used for when the effect of dewatering of the aquifer can be eliminated. Possible Drawdown in Confined Aquifer is denoted by s' symbol.

How to evaluate Observed drawdown in unconfined aquifer using this online evaluator? To use this online evaluator for Observed drawdown in unconfined aquifer, enter Observed Drawdown in the Unconfined Aquifer (s) & Aquifer Thickness (b) and hit the calculate button.

FAQs on Observed drawdown in unconfined aquifer

What is the formula to find Observed drawdown in unconfined aquifer?

The formula of Observed drawdown in unconfined aquifer is expressed as Possible Drawdown in Confined Aquifer = Observed Drawdown in the Unconfined Aquifer-((Observed Drawdown in the Unconfined Aquifer^2)/(2*Aquifer Thickness)). Here is an example- 2.7 = 3-((3^2)/(2*15)).

How to calculate Observed drawdown in unconfined aquifer?

With Observed Drawdown in the Unconfined Aquifer (s) & Aquifer Thickness (b) we can find Observed drawdown in unconfined aquifer using the formula - Possible Drawdown in Confined Aquifer = Observed Drawdown in the Unconfined Aquifer-((Observed Drawdown in the Unconfined Aquifer^2)/(2*Aquifer Thickness)).

Can the Observed drawdown in unconfined aquifer be negative?

Yes, the Observed drawdown in unconfined aquifer, measured in Length can be negative.

Which unit is used to measure Observed drawdown in unconfined aquifer?

Observed drawdown in unconfined aquifer is usually measured using the Meter[m] for Length. Millimeter[m], Kilometer[m], Decimeter[m] are the few other units in which Observed drawdown in unconfined aquifer can be measured.

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Observed drawdown in unconfined aquifer Formula

Observed drawdown in unconfined aquifer Example

Observed drawdown in unconfined aquifer Solution

Observed drawdown in unconfined aquifer Formula Elements

Other formulas in Source of Water Derived from Wells category

How to Evaluate Observed drawdown in unconfined aquifer?

FAQs on Observed drawdown in unconfined aquifer

Variable Name