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Drawdown across One Log Cycle given First Estimate of Pumping Rate Formula

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The Drawdown Across One Log Cycle is referred as change in water level (or hydraulic head) in an aquifer due to pumping from a well. Check FAQs

Δs = \frac{Q e}{2.7 \cdot T}

Δs - Drawdown Across One Log Cycle?Q_e - First Estimate of the Pumping Rate?T - Transmissivity?

Drawdown across One Log Cycle given First Estimate of Pumping Rate Example

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Here is how the Drawdown across One Log Cycle given First Estimate of Pumping Rate equation looks like with Values.

Here is how the Drawdown across One Log Cycle given First Estimate of Pumping Rate equation looks like with Units.

Here is how the Drawdown across One Log Cycle given First Estimate of Pumping Rate equation looks like.

44.5455 = \frac{1323}{2.7 \cdot 11}

44.5455 = \frac{1323m³/s}{2.7 \cdot 11m²/s}

44.5455 = \frac{1323}{2.7 \cdot 11}

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Drawdown across One Log Cycle given First Estimate of Pumping Rate Solution

Follow our step by step solution on how to calculate Drawdown across One Log Cycle given First Estimate of Pumping Rate?

FIRST Step Consider the formula

Δs = \frac{Q e}{2.7 \cdot T}

Next Step Substitute values of Variables

∴

Δs = \frac{1323m³/s}{2.7 \cdot 11m²/s}

Next Step Prepare to Evaluate

∴

Δs = \frac{1323}{2.7 \cdot 11}

Next Step Evaluate

∴

Δs = 44.5454545454545

LAST Step Rounding Answer

∴

Δs = 44.5455

Drawdown across One Log Cycle given First Estimate of Pumping Rate Formula Elements

Variables

Drawdown Across One Log Cycle

The Drawdown Across One Log Cycle is referred as change in water level (or hydraulic head) in an aquifer due to pumping from a well.

Symbol: Δs

Measurement: NAUnit: Unitless

Note: Value can be positive or negative.

Formulas to find Drawdown Across One Log Cycle

First Estimate of the Pumping Rate

The First Estimate of the Pumping Rate refers to the preliminary calculation used to determine the amount of water that can be pumped from a well.

Symbol: Q_e

Measurement: Volumetric Flow RateUnit: m³/s

Note: Value should be greater than 0.

Formulas to find First Estimate of the Pumping Rate

Transmissivity

Transmissivity is the rate at which groundwater flows horizontally through an aquifer or the degree to which a medium allows something, in particular electromagnetic radiation, to pass through it.

Symbol: T

Measurement: Kinematic ViscosityUnit: m²/s

Note: Value can be positive or negative.

Formulas to find Transmissivity

Other formulas in Well Field Design category

Go Distance from Pumping Well

r o = \sqrt{2.25 \cdot T \cdot \frac{t}{S}}

Go Storage Coefficient given Distance from Pumping Well

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

Go Transmissivity given Distance from Pumping Well

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

Go First Estimate of Pumping Rate

Q e = 2.7 \cdot T \cdot Δs

How to Evaluate Drawdown across One Log Cycle given First Estimate of Pumping Rate?

Drawdown across One Log Cycle given First Estimate of Pumping Rate evaluator uses Drawdown Across One Log Cycle = First Estimate of the Pumping Rate/(2.7*Transmissivity) to evaluate the Drawdown Across One Log Cycle, The Drawdown across One Log Cycle given First Estimate of Pumping Rate formula is defined as the reduction in hydraulic head observed at a well in an aquifer, typically due to pumping a well as part of an aquifer test or well test. Drawdown Across One Log Cycle is denoted by Δs symbol.

How to evaluate Drawdown across One Log Cycle given First Estimate of Pumping Rate using this online evaluator? To use this online evaluator for Drawdown across One Log Cycle given First Estimate of Pumping Rate, enter First Estimate of the Pumping Rate (Q_e) & Transmissivity (T) and hit the calculate button.

FAQs on Drawdown across One Log Cycle given First Estimate of Pumping Rate

What is the formula to find Drawdown across One Log Cycle given First Estimate of Pumping Rate?

The formula of Drawdown across One Log Cycle given First Estimate of Pumping Rate is expressed as Drawdown Across One Log Cycle = First Estimate of the Pumping Rate/(2.7*Transmissivity). Here is an example- 44.54545 = 1323/(2.7*11).

How to calculate Drawdown across One Log Cycle given First Estimate of Pumping Rate?

With First Estimate of the Pumping Rate (Q_e) & Transmissivity (T) we can find Drawdown across One Log Cycle given First Estimate of Pumping Rate using the formula - Drawdown Across One Log Cycle = First Estimate of the Pumping Rate/(2.7*Transmissivity).

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