1. What is Well Pump Depth?

Well pump depth refers to the depth at which a submersible pump should be installed in a water well. It's calculated by adding the static water level to the expected drawdown during pumping.

2. How Does the Calculator Work?

The calculator uses the simple formula:

Where:

• \( \text{Static Level} \) — The distance from ground surface to water level when well is not being pumped (ft)
• \( \text{Drawdown} \) — The additional water level drop when the pump is operating (ft)

Explanation: The pump needs to be installed below the lowest expected water level during operation to ensure continuous water supply.

3. Importance of Proper Pump Depth

Details: Correct pump placement prevents dry running (which can damage the pump), ensures adequate water supply, and maintains pump efficiency.

4. Using the Calculator

Tips: Measure static level when the well hasn't been pumped for several hours. Drawdown can be estimated from well tests or pump specifications.

5. Frequently Asked Questions (FAQ)

Q1: How much extra depth should I add for safety?
A: Typically add 10-20 feet below the calculated depth to account for seasonal variations and pump intake requirements.

Q2: What's a typical static water level?
A: Varies greatly by region - from just a few feet in some areas to hundreds of feet in others.

Q3: How do I measure drawdown?
A: Measure water level before pumping, then during pumping at the expected flow rate. The difference is drawdown.

Q4: Does pipe friction affect this calculation?
A: No, this is purely a depth calculation. Pipe friction affects pump pressure requirements separately.

Q5: What about well casing diameter?
A: Casing diameter doesn't affect depth calculation but determines what size pump can be installed.