Depression Head In Well Given Pumping Stopped With Base 10 And Fine Sand Is Present Calculator

Formula Used:

\[ h1 = h2 \times 10^{\frac{0.5 \times \Delta t}{2.303}} \]

Depression Head 1:

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1. What is the Depression Head Formula?

The Depression Head formula calculates the difference in water table levels when pumping is stopped, specifically for wells with base 10 and fine sand conditions. It helps determine the recovery characteristics of groundwater wells.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ h1 = h2 \times 10^{\frac{0.5 \times \Delta t}{2.303}} \]

Where:

\( h1 \) — Depression Head 1 (difference in water levels when pumping stopped)
\( h2 \) — Depression Head 2 (difference in water levels when pumping stopped)
\( \Delta t \) — Total time interval (seconds)

Explanation: The formula calculates the depression head at different time intervals, accounting for the recovery characteristics of wells in fine sand conditions with base 10.

3. Importance of Depression Head Calculation

Details: Accurate depression head calculation is crucial for understanding well recovery rates, determining aquifer characteristics, and managing groundwater resources effectively.

4. Using the Calculator

Tips: Enter Depression Head 2 in meters and Total Time Interval in seconds. All values must be valid positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What is Depression Head in groundwater studies?
A: Depression Head refers to the difference between the static water table level and the water level in a well when pumping is stopped.

Q2: Why is base 10 used in this formula?
A: Base 10 is used for logarithmic calculations in this specific formula to determine the recovery characteristics of wells in fine sand conditions.

Q3: What does fine sand presence indicate?
A: Fine sand affects the permeability and recovery rate of the aquifer, which is accounted for in this specialized formula.

Q4: When should this formula be applied?
A: This formula is specifically designed for wells with base 10 characteristics where fine sand is present in the aquifer.

Q5: What are typical values for Depression Head?
A: Depression Head values vary depending on aquifer characteristics, pumping rates, and time intervals, typically ranging from centimeters to several meters.