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How To Calculate Well Capacity

Well Capacity Formula:

\[ Capacity = \frac{Volume}{Time} \]

gallons
minutes

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1. What Is Well Capacity?

Well capacity refers to the rate at which water can be extracted from a well, typically measured in gallons per minute (gpm). It represents the well's maximum sustainable yield and is crucial for determining if the water supply meets demand.

2. How Does The Calculator Work?

The calculator uses the well capacity formula:

\[ Capacity = \frac{Volume}{Time} \]

Where:

Explanation: This formula calculates the flow rate by dividing the total volume of water extracted by the time it took to extract it.

3. Importance Of Well Capacity Calculation

Details: Calculating well capacity is essential for determining if a well can adequately supply water for residential, agricultural, or commercial use. It helps in well management, pump selection, and ensuring sustainable water extraction.

4. Using The Calculator

Tips: Enter the volume of water extracted in gallons and the time taken in minutes. Both values must be positive numbers greater than zero.

5. Frequently Asked Questions (FAQ)

Q1: What is a good well capacity?
A: A good well capacity depends on the intended use. For residential purposes, 5-10 gpm is generally adequate, while agricultural use may require higher capacities.

Q2: How can I measure well capacity accurately?
A: Use a flow meter to measure volume and a timer to measure time. Ensure measurements are taken during stable pumping conditions.

Q3: What factors affect well capacity?
A: Factors include aquifer characteristics, well depth, screen size, and pump efficiency. Seasonal variations can also impact capacity.

Q4: How often should well capacity be tested?
A: It's recommended to test well capacity annually or whenever there's a noticeable change in water supply or quality.

Q5: Can well capacity change over time?
A: Yes, well capacity can decrease due to factors like sedimentation, biofouling, or changes in aquifer levels. Regular maintenance helps sustain capacity.

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