Verify the inputs
Measure or document each input. If a value is only an estimate, record its source and test a conservative alternative.
Wells & water/ CALCULATOR
Observed well water-level recovery
Convert a measured rise in a cylindrical well into equivalent volume and an average recovery observation.
FROM ESTIMATE TO ACTION
Use the result, not just the number.
Keep the calculation traceable
Save the input link or copied result together with the date, units and assumptions. A number without its inputs cannot be checked later.
Confirm the decision
Compare the estimate with the related guide, current product data and requirements that apply at your location before buying or building.
Inputs to verify
- Internal well diameter (mm)
- Use the internal diameter over the section in which the level changed.
- Observed water-level rise (m)
- Starting depth to water minus later depth, both from the same reference point.
- Elapsed recovery time (min)
- Time between the two documented water-level readings.