1. What is the Discharge from Open Well Formula?

The discharge from an open well under depression head formula calculates the yield from an open well based on specific capacity, well area, and depression head. This formula is essential for determining the flow discharge into a well under a specific depression head.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( Q_Y \) — Yield from an Open Well (m³/s)
• \( K_s \) — Specific Capacity (dimensionless)
• \( A \) — Area of the Well (m²)
• \( H \) — Depression Head (m)

Explanation: The formula calculates the discharge rate by multiplying the specific capacity by the well area and the depression head.

3. Importance of Well Discharge Calculation

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

4. Using the Calculator

Tips: Enter specific capacity (dimensionless), well area in square meters, and depression head in meters. All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What is specific capacity?
A: Specific capacity refers to the amount of water furnished under a standard unit head, typically measured in well hydraulics.

Q2: How is depression head measured?
A: Depression head is measured as the height of the bottom of a well above the datum, representing the drawdown in the well.

Q3: What factors affect well discharge?
A: Well discharge is affected by aquifer characteristics, well construction, pumping rate, and the depression head.

Q4: Are there limitations to this formula?
A: This formula provides an idealized calculation and may need adjustments for real-world conditions like aquifer heterogeneity and well efficiency.

Q5: Can this formula be used for all well types?
A: This formula is specifically designed for open wells under depression head conditions and may not apply to other well configurations.