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Specific Capacity Formula

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The Specific Capacity is referred as amount of water furnished under a standard unit head. Check FAQs

K s = \frac{q}{s t}

K_s - Specific Capacity?q - Pumping Rate?s_t - Drawdown Inside the Well?

Specific Capacity Example

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With units

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Here is how the Specific Capacity equation looks like with Values.

Here is how the Specific Capacity equation looks like with Units.

Here is how the Specific Capacity equation looks like.

0.7778 = \frac{7}{9}

0.7778 = \frac{7m³/s}{9m}

0.7778 = \frac{7}{9}

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Specific Capacity Solution

Follow our step by step solution on how to calculate Specific Capacity?

FIRST Step Consider the formula

K s = \frac{q}{s t}

Next Step Substitute values of Variables

∴

K s = \frac{7m³/s}{9m}

Next Step Prepare to Evaluate

∴

K s = \frac{7}{9}

Next Step Evaluate

∴

K s = 0.777777777777778

LAST Step Rounding Answer

∴

K s = 0.7778

Specific Capacity Formula Elements

Variables

Specific Capacity

The Specific Capacity is referred as amount of water furnished under a standard unit head.

Symbol: K_s

Measurement: NAUnit: Unitless

Note: Value can be positive or negative.

Formulas to find Specific Capacity

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

Drawdown Inside the Well

The Drawdown Inside the Well refers to the radius of the pumping well is a change in groundwater level due to an applied stress.

Symbol: s_t

Measurement: LengthUnit: m

Note: Value should be greater than 0.

Formulas to find Drawdown Inside the Well

Other formulas in Well Efficiency category

Go Pumping Rate given Specific Capacity

q = K s \cdot s t

Go Drawdown given Specific Capacity

s t = \frac{q}{K s}

Go Well Efficiency

E = (\frac{s}{s t})

Go Drawdown in Aquifer given Well Efficiency

s = E \cdot s t

How to Evaluate Specific Capacity?

Specific Capacity evaluator uses Specific Capacity = Pumping Rate/Drawdown Inside the Well to evaluate the Specific Capacity, The Specific Capacity formula is defined as the amount of water furnished under a standard unit head which is a short-term sustainable discharge divided by the drawdown yielding the discharge. Specific Capacity is denoted by K_s symbol.

How to evaluate Specific Capacity using this online evaluator? To use this online evaluator for Specific Capacity, enter Pumping Rate (q) & Drawdown Inside the Well (s_t) and hit the calculate button.

FAQs on Specific Capacity

What is the formula to find Specific Capacity?

The formula of Specific Capacity is expressed as Specific Capacity = Pumping Rate/Drawdown Inside the Well. Here is an example- 0.777778 = 7/9.

How to calculate Specific Capacity?

With Pumping Rate (q) & Drawdown Inside the Well (s_t) we can find Specific Capacity using the formula - Specific Capacity = Pumping Rate/Drawdown Inside the Well.

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