1. What is the Discharge From Well Given Specific Capacity For Coarse Sand Formula?

The formula calculates discharge from a well using cross-sectional area and constant depression head for coarse sand. It provides a simplified method for estimating flow rates in sandy aquifers.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( Q \) — Discharge (m³/s)
• \( A_{cs} \) — Cross-Sectional Area (m²)
• \( H \) — Constant Depression Head for Coarse Sand (m)

Explanation: The formula provides a direct linear relationship between discharge, cross-sectional area, and depression head for coarse sand conditions.

3. Importance of Discharge Calculation

Details: Accurate discharge calculation is crucial for well design, groundwater resource management, and determining sustainable extraction rates from aquifers.

4. Using the Calculator

Tips: Enter cross-sectional area in m² and constant depression head in m. All values must be valid positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What is cross-sectional area in this context?
A: Cross-sectional area refers to the area through which water flows in the aquifer or well system.

Q2: How is constant depression head determined?
A: Constant depression head is typically measured as the difference between static water level and pumping water level in the well.

Q3: Why is this formula specific to coarse sand?
A: The formula uses a coefficient of 1 which is optimized for coarse sand conditions where permeability is higher.

Q4: What are typical discharge values for wells?
A: Discharge rates vary widely but typically range from 0.001 to 1.0 m³/s depending on well size and aquifer characteristics.

Q5: Are there limitations to this formula?
A: This simplified formula may not account for all aquifer properties and is most accurate for coarse sand conditions with specific well configurations.