Recharge Area Extent Estimate Calculator
Steady actual discharge/effective recharge catchment area scenario; storage, interbasin flow and leakage assumptions independently established. Actual independently matched quantities/units required; not infer causal effect, clinical guidance or safe design.
Description
A steady water balance relates annual spring discharge to effective recharge depth.
A steady water balance relates annual spring discharge to effective recharge depth.1
The resulting catchment area depends on independently established storage, leakage and interbasin-flow assumptions.
When to use Recharge Area Extent Estimate Calculator
Use this tool to calculate conditional recharge catchment area from the independently matched numerator and denominator. Establish the survey or observation scope, reference frame, units and independently applicable calibration or qualified plan.
How to use Recharge Area Extent Estimate Calculator and understand its results
- Establish the survey or observation scope, reference frame, units and independently applicable calibration or qualified plan.
- Enter actualAnnualSpringDischargeVolumeCubicMeters, callerIndependentlyEstablishedEffectiveAnnualRechargeMeters, using the field meanings and rules below, then run the tool.
- Read result.observedRatio as conditional recharge catchment area in square metres. Check the observation scope and assumptions before using the result.
- Correct any reported input issue and run again. Before using a successful result, check the stated units, signs, reference scope and observation coverage.
| Input field | Meaning | Value type | Requirement |
|---|---|---|---|
| actualAnnualSpringDischargeVolumeCubicMeters | Actual annual spring discharge volume cubic meters | number | Required |
| callerIndependentlyEstablishedEffectiveAnnualRechargeMeters | Caller independently established effective annual recharge meters | number | Required |
Require a finite nonnegative actual annual spring discharge volume cubic meters and a strictly positive caller independently established effective annual recharge meters. Divide the first by the second to obtain conditional recharge catchment area, expressed as square metres. Use compatible observations on the declared basis; no unit conversion or parameter selection is performed. The numerical ratio is not clamped to one.
conditional_recharge_catchment_area=annualDischargeM3/effectiveAnnualRechargeMeters Use the matching field units and the exact boundary, ordering and reference rules above.
| Output field | Meaning | Value type |
|---|---|---|
| result | Qualified observed calculation or explicit reference | object |
| result.observedRatio | Conditional recharge catchment area, expressed as square metres. | number |
{
"input": {
"actualAnnualSpringDischargeVolumeCubicMeters": 2,
"callerIndependentlyEstablishedEffectiveAnnualRechargeMeters": 4
},
"output": {
"result": {
"observedRatio": 0.5
}
}
}Limitations and assumptions
The actual observation coverage, calibration and qualified plan determine applicability. A numerical result does not establish survey accuracy, route suitability, atmosphere conditions or equipment adequacy beyond the declared comparison.
Missing required fields, unknown fields, wrong types and violated rules return input issues. Numeric values and outputs must be finite. Extremely large composite outputs are rejected.
Alternative or Complementary methods
For a related step, use Sinkhole Catchment Area Runoff Capture Calculator: Event runoff volume combines catchment area, rainfall depth and an independently applicable runoff fraction. For a complementary comparison, use Epikarst Storage Estimate Calculator: Epikarst drainable storage can be modeled from footprint, effective thickness and drainable porosity.
References
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Recharge Area Extent Estimate Calculator — tool.io
Similar or alternative tools
- Sinkhole Catchment Area Runoff Capture Calculator
Event runoff volume combines catchment area, rainfall depth and an independently applicable runoff fraction.
- Epikarst Storage Estimate Calculator
Epikarst drainable storage can be modeled from footprint, effective thickness and drainable porosity.