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Modified equation for storage coefficient from time drawdown graphs Formula

GoStorage Coefficient given time at which Steady Shape conditions develops Formula

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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. Check FAQs

S = \frac{τ \cdot t o}{640 \cdot r^{2}}

S - Storage Coefficient?τ - Transmissivity?t_o - Time at the Point of Intersection?r - Distance from Pumping Well?

Modified equation for storage coefficient from time drawdown graphs Example

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Here is how the Modified equation for storage coefficient from time drawdown graphs equation looks like with Values.

Here is how the Modified equation for storage coefficient from time drawdown graphs equation looks like with Units.

Here is how the Modified equation for storage coefficient from time drawdown graphs equation looks like.

0.0292 = \frac{1.4 \cdot 120}{640 \cdot 3^{2}}

0.0292 = \frac{1.4m²/s \cdot 120min}{640 \cdot {3m}^{2}}

0.0292 = \frac{1.4 \cdot 120}{640 \cdot 3^{2}}

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Modified equation for storage coefficient from time drawdown graphs Solution

Follow our step by step solution on how to calculate Modified equation for storage coefficient from time drawdown graphs?

FIRST Step Consider the formula

S = \frac{τ \cdot t o}{640 \cdot r^{2}}

Next Step Substitute values of Variables

∴

S = \frac{1.4m²/s \cdot 120min}{640 \cdot {3m}^{2}}

Next Step Prepare to Evaluate

∴

S = \frac{1.4 \cdot 120}{640 \cdot 3^{2}}

Next Step Evaluate

∴

S = 0.0291666666666667

LAST Step Rounding Answer

∴

S = 0.0292

Modified equation for storage coefficient from time drawdown graphs Formula Elements

Variables

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

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

Time at the Point of Intersection

Time at the Point of Intersection between Straight Line and Zero-drawdown Line.

Symbol: t_o

Measurement: TimeUnit: min

Note: Value can be positive or negative.

Formulas to find Time at the Point of Intersection

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 to find Storage Coefficient

Go Storage Coefficient given time at which Steady Shape conditions develops

S = τ \cdot \frac{t c}{7200} \cdot r^{2}

Other formulas in Time Drawdown Analysis category

Go Time at which Steady Shape Conditions Develop

t c = \frac{7200 \cdot r^{2} \cdot S}{τ}

Go Transmissivity derived from time drawdown graphs

τ = \frac{2.3 \cdot q}{4 \cdot π \cdot Δs}

Go Equation for pumping rate of transmissivity from time drawdown graphs

q = \frac{τ \cdot 4 \cdot π \cdot Δs D}{2.3}

Go Equation for drawdown across one log cycle

Δs D = \frac{2.3 \cdot q}{τ \cdot 4 \cdot π}

How to Evaluate Modified equation for storage coefficient from time drawdown graphs?

Modified equation for storage coefficient from time drawdown graphs evaluator uses Storage Coefficient = (Transmissivity*Time at the Point of Intersection)/(640*Distance from Pumping Well^2) to evaluate the Storage Coefficient, The Modified equation for storage coefficient from time drawdown graphs is the the volume of water that can be removed from an aquifer for a given drop in hydraulic head. Storage Coefficient is denoted by S symbol.

How to evaluate Modified equation for storage coefficient from time drawdown graphs using this online evaluator? To use this online evaluator for Modified equation for storage coefficient from time drawdown graphs, enter Transmissivity (τ), Time at the Point of Intersection (t_o) & Distance from Pumping Well (r) and hit the calculate button.

FAQs on Modified equation for storage coefficient from time drawdown graphs

What is the formula to find Modified equation for storage coefficient from time drawdown graphs?

The formula of Modified equation for storage coefficient from time drawdown graphs is expressed as Storage Coefficient = (Transmissivity*Time at the Point of Intersection)/(640*Distance from Pumping Well^2). Here is an example- 0.029167 = (1.4*7200)/(640*3^2).

How to calculate Modified equation for storage coefficient from time drawdown graphs?

With Transmissivity (τ), Time at the Point of Intersection (t_o) & Distance from Pumping Well (r) we can find Modified equation for storage coefficient from time drawdown graphs using the formula - Storage Coefficient = (Transmissivity*Time at the Point of Intersection)/(640*Distance from Pumping Well^2).

What are the other ways to Calculate Storage Coefficient?

Here are the different ways to Calculate Storage Coefficient-

Storage Coefficient=Transmissivity*Time at Which Steady-shape Conditions Develop/7200*Distance from Pumping Well^2

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Modified equation for storage coefficient from time drawdown graphs Formula

​GoStorage Coefficient given time at which Steady Shape conditions develops Formula

Modified equation for storage coefficient from time drawdown graphs Example

Modified equation for storage coefficient from time drawdown graphs Solution

Modified equation for storage coefficient from time drawdown graphs Formula Elements

Other Formulas to find Storage Coefficient

Other formulas in Time Drawdown Analysis category

How to Evaluate Modified equation for storage coefficient from time drawdown graphs?

FAQs on Modified equation for storage coefficient from time drawdown graphs

Variable Name

GoStorage Coefficient given time at which Steady Shape conditions develops Formula