Coefficient of Storage for Unconfined Aquifer Solution

STEP 0: Pre-Calculation Summary
Formula Used
Storage Coefficient = Specific Yield+(Unit Weight of Fluid/1000)*(Compressibility+Porosity of soil*Compressibility of Water)*Saturated Thickness of Aquifer
S = Sy+(γ/1000)*(α+η*β)*Bs
This formula uses 7 Variables
Variables Used
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.
Specific Yield - Specific Yield tells how much water is available for Consumptive use.
Unit Weight of Fluid - (Measured in Newton per Cubic Meter) - Unit Weight of Fluid is the weight per unit volume of a material/fluid.
Compressibility - Compressibility is defined as the ability of something (such as a fluid) to be reduced in volume or size under pressure.
Porosity of soil - Porosity of soil is the ratio of the volume of voids to the volume of soil.
Compressibility of Water - Compressibility of Water is the fractional change in volume per unit increase in pressure.
Saturated Thickness of Aquifer - Saturated Thickness of Aquifer is the thickness of the aquifer in which the pore spaces of rock forming the aquifer be with water.
STEP 1: Convert Input(s) to Base Unit
Specific Yield: 0.2 --> No Conversion Required
Unit Weight of Fluid: 9.807 Kilonewton per Cubic Meter --> 9807 Newton per Cubic Meter (Check conversion here)
Compressibility: 1.5 --> No Conversion Required
Porosity of soil: 0.32 --> No Conversion Required
Compressibility of Water: 4.35 --> No Conversion Required
Saturated Thickness of Aquifer: 3 --> No Conversion Required
STEP 2: Evaluate Formula
Substituting Input Values in Formula
S = Sy+(γ/1000)*(α+η*β)*Bs --> 0.2+(9807/1000)*(1.5+0.32*4.35)*3
Evaluating ... ...
S = 85.285532
STEP 3: Convert Result to Output's Unit
85.285532 --> No Conversion Required
FINAL ANSWER
85.285532 85.28553 <-- Storage Coefficient
(Calculation completed in 00.004 seconds)

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Created by Mithila Muthamma PA
Coorg Institute of Technology (CIT), Coorg
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4 Compressibility of Aquifers Calculators

Saturated thickness of aquifer when coefficient of storage for unconfined aquifer is considered
Go Saturated Thickness of Aquifer = (Storage Coefficient-Specific Yield)/((Unit Weight of Fluid/1000)*(Compressibility+Porosity of soil*Compressibility of Water))
Coefficient of Storage for Unconfined Aquifer
Go Storage Coefficient = Specific Yield+(Unit Weight of Fluid/1000)*(Compressibility+Porosity of soil*Compressibility of Water)*Saturated Thickness of Aquifer
Discharge per Unit Width of Aquifer
Go Discharge per unit width of aquifer = (Piezometric Head at Upstream End-Piezometric Head at Downstream End)*Coefficient of Permeability*Aquifer Thickness/Length
Barometric Efficiency given Compressibility Parameters
Go Barometric Efficiency = -((Porosity of soil*Compressibility of Water)/Compressibility+Porosity of soil*Compressibility of Water)

Coefficient of Storage for Unconfined Aquifer Formula

Storage Coefficient = Specific Yield+(Unit Weight of Fluid/1000)*(Compressibility+Porosity of soil*Compressibility of Water)*Saturated Thickness of Aquifer
S = Sy+(γ/1000)*(α+η*β)*Bs

What Aquifer means?

An Aquifer is a body of rock and/or sediment that holds groundwater. Confined aquifers have a layer of impenetrable rock or clay above them, while unconfined aquifers lie below a permeable layer of soil.

How to Calculate Coefficient of Storage for Unconfined Aquifer?

Coefficient of Storage for Unconfined Aquifer calculator uses Storage Coefficient = Specific Yield+(Unit Weight of Fluid/1000)*(Compressibility+Porosity of soil*Compressibility of Water)*Saturated Thickness of Aquifer to calculate the Storage Coefficient, The Coefficient of Storage for Unconfined Aquifer is defined as the volume of water released from storage per unit decline in hydraulic head in the aquifer. Storage Coefficient is denoted by S symbol.

How to calculate Coefficient of Storage for Unconfined Aquifer using this online calculator? To use this online calculator for Coefficient of Storage for Unconfined Aquifer, enter Specific Yield (Sy), Unit Weight of Fluid (γ), Compressibility (α), Porosity of soil (η), Compressibility of Water (β) & Saturated Thickness of Aquifer (Bs) and hit the calculate button. Here is how the Coefficient of Storage for Unconfined Aquifer calculation can be explained with given input values -> 85.28553 = 0.2+(9807/1000)*(1.5+0.32*4.35)*3.

FAQ

What is Coefficient of Storage for Unconfined Aquifer?
The Coefficient of Storage for Unconfined Aquifer is defined as the volume of water released from storage per unit decline in hydraulic head in the aquifer and is represented as S = Sy+(γ/1000)*(α+η*β)*Bs or Storage Coefficient = Specific Yield+(Unit Weight of Fluid/1000)*(Compressibility+Porosity of soil*Compressibility of Water)*Saturated Thickness of Aquifer. Specific Yield tells how much water is available for Consumptive use, Unit Weight of Fluid is the weight per unit volume of a material/fluid, Compressibility is defined as the ability of something (such as a fluid) to be reduced in volume or size under pressure, Porosity of soil is the ratio of the volume of voids to the volume of soil, Compressibility of Water is the fractional change in volume per unit increase in pressure & Saturated Thickness of Aquifer is the thickness of the aquifer in which the pore spaces of rock forming the aquifer be with water.
How to calculate Coefficient of Storage for Unconfined Aquifer?
The Coefficient of Storage for Unconfined Aquifer is defined as the volume of water released from storage per unit decline in hydraulic head in the aquifer is calculated using Storage Coefficient = Specific Yield+(Unit Weight of Fluid/1000)*(Compressibility+Porosity of soil*Compressibility of Water)*Saturated Thickness of Aquifer. To calculate Coefficient of Storage for Unconfined Aquifer, you need Specific Yield (Sy), Unit Weight of Fluid (γ), Compressibility (α), Porosity of soil (η), Compressibility of Water (β) & Saturated Thickness of Aquifer (Bs). With our tool, you need to enter the respective value for Specific Yield, Unit Weight of Fluid, Compressibility, Porosity of soil, Compressibility of Water & Saturated Thickness of Aquifer and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.
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