1. What is Depression Head For Flow Discharge Into Well?

Depression Head is defined as height of the bottom of a well above the datum. It is calculated using the flow discharge and proportionality constant of the aquifer system.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( H \) — Depression Head (m)
• \( Qf \) — Flow Discharge (m³/s)
• \( K0 \) — Proportionality Constant

Explanation: The proportionality constant represents characteristics of the aquifer and the area of the well. It represents discharge per unit drawdown also called specific capacity of well.

3. Importance of Depression Head Calculation

Details: Accurate depression head calculation is crucial for well design, groundwater resource management, and determining the sustainable yield of water wells.

4. Using the Calculator

Tips: Enter flow discharge in m³/s and proportionality constant. Both values must be positive numbers greater than zero.

5. Frequently Asked Questions (FAQ)

Q1: What is flow discharge in well hydraulics?
A: Flow discharge refers to the volume of water passing through a particular cross-section of a well or aquifer per unit of time, typically measured in m³/s.

Q2: How is proportionality constant determined?
A: The proportionality constant is determined through pumping tests and represents the specific capacity of the well, which is discharge per unit drawdown.

Q3: What factors affect depression head?
A: Depression head is affected by aquifer characteristics, well construction, pumping rate, and duration of pumping.

Q4: Why is depression head important in well design?
A: Depression head helps determine the optimal well depth, screen placement, and sustainable pumping rates to avoid well failure or excessive drawdown.

Q5: Can this formula be used for all aquifer types?
A: This formula is generally applicable for confined aquifers, but may need modifications for unconfined aquifers or complex hydrogeological conditions.