1. What is the Proportionality Constant?

The Proportionality Constant is referred as characteristics of the aquifer and the area of the well. It represents discharge per unit drawdown also called specific capacity of well.

2. How Does the Calculator Work?

The calculator uses the Proportionality Constant formula:

Where:

• \( K_0 \) — Proportionality Constant (m³/s/m)
• \( Q_f \) — Flow Discharge (m³/s)
• \( H \) — Depression Head (m)

Explanation: The equation calculates the specific capacity of a well by dividing the flow discharge by the depression head.

3. Importance of Proportionality Constant

Details: The Proportionality Constant is crucial for characterizing aquifer properties and determining the efficiency of well performance. It helps in assessing the sustainable yield of groundwater resources.

4. Using the Calculator

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

5. Frequently Asked Questions (FAQ)

Q1: What does the Proportionality Constant represent?
A: It represents the specific capacity of a well, indicating how much water can be extracted per unit of drawdown.

Q2: What are typical values for Proportionality Constant?
A: Values vary significantly depending on aquifer characteristics, ranging from very low values in confined aquifers to higher values in unconfined aquifers with good permeability.

Q3: How is Flow Discharge measured?
A: Flow discharge is typically measured using flow meters, weirs, or other hydraulic measurement devices at the well outlet.

Q4: What factors affect the Proportionality Constant?
A: Aquifer permeability, well construction, screen characteristics, and the degree of well development all influence the Proportionality Constant value.

Q5: Can this constant be used for pump sizing?
A: Yes, the Proportionality Constant is essential for proper pump sizing and determining the optimal pumping rate for sustainable groundwater extraction.