Inflow Outflow Storage Residual Checker
SignedstorageledgerresidualobservedΔS−(I−O),periodscopescomplete/external,no automaticallyinvent unmeasuredgroundwater. Actual independent model/unit/frame/epoch/calibration and applicable measurement established;not precise ephemeris,forecast,geodesy operation,identity or safety approval.
Description
A storage ledger residual compares observed lake storage change with recorded inflow minus outflow.
A storage ledger residual compares observed lake storage change with recorded inflow minus outflow.1
A discrepancy may indicate measurement or scope differences without identifying an unmeasured source.
When to use Inflow Outflow Storage Residual Checker
Use this tool to apply the stated inflow outflow storage residual checker operation with an explicit input and unit basis.
How to use Inflow Outflow Storage Residual Checker and how it works
- Establish the measurement basis and units described above.
- Enter actualObservedStorageChangeM3, actualMatchedTotalInflowM3, actualMatchedTotalOutflowM3 and run the tool.
- Read result.value using the output meanings below.
- If input is rejected, correct the stated type, range, ordering or alignment issue and rerun; review successful results under the declared convention.
| Input field | Meaning | Value type | Requirement |
|---|---|---|---|
| actualObservedStorageChangeM3 | Observed storage change m3, on the basis specified in the algorithm. | number | required; finite; further conditions in the algorithm |
| actualMatchedTotalInflowM3 | Matched total inflow m3, on the basis specified in the algorithm. | number | required; finite; nonnegative; further conditions in the algorithm |
| actualMatchedTotalOutflowM3 | Matched total outflow m3, on the basis specified in the algorithm. | number | required; finite; nonnegative; further conditions in the algorithm |
Require nonnegative inflow and outflow volumes and finite signed storage change for the same period. Subtract net recorded flow from observed change.
residual m³ = observed Δstorage − (inflow − outflow) Apply the declared units, ordering and branch conditions.
| Output field | Meaning | Value type |
|---|---|---|
| result | Object containing the declared output fields. | object |
| result.value | Signed storage-ledger residual in cubic meters. | number |
{
"input": {
"actualObservedStorageChangeM3": 2,
"actualMatchedTotalInflowM3": 5,
"actualMatchedTotalOutflowM3": 2
},
"output": {
"result": {
"value": -1
}
}
}Limitations and assumptions
The output applies the declared operation to the values you supply. Establish the measurement basis, units, coefficients and any caller-selected rules before interpreting it. The tool does not independently collect or verify observations or decide whether a model or reference applies.
Supply explicit required fields with the documented types and dense aligned arrays. Unknown fields, wrong types and nonfinite numbers are rejected. Branch-specific constraints are explained above. A successful false boolean, negative signed difference, empty slice or unresolved tie is distinct from an input error. Very large inputs or outputs may be rejected by shared resource limits.
Alternative or Complementary methods
For a related operation, use Watershed Lake Area Drainage Ratio Calculator. Drainage ratio compares an independently delineated tributary watershed with the lake's measured area.
For a related operation, use Water Balance Precipitation Evaporation Calculator. Direct precipitation and evaporation contribute signed water-volume change across a lake surface.
References
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Inflow Outflow Storage Residual Checker — tool.io
Similar or alternative tools
- Watershed Lake Area Drainage Ratio Calculator
Drainage ratio compares an independently delineated tributary watershed with the lake's measured area.
- Water Balance Precipitation Evaporation Calculator
Direct precipitation and evaporation contribute signed water-volume change across a lake surface.