Description
Use currentLevel-referenceLevel as height change.
Ideal water-storage and channel geometry uses dimensions, areas, and displacement fractions. Coherent length units determine areas and volumes; actual irregular geometry and hydraulic behavior require additional information.
Use currentLevel-referenceLevel as height change.
When to use this tool
Use Reservoir Level Area Storage Term when you need one explicit geometric component of a tank, bed, conduit, or channel.
How to use the tool and how it works
- Enter referenceStorage, referenceLevel, currentLevel, referenceArea, areaSlope. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read currentArea, storage. Use the output convention below.
Use currentLevel-referenceLevel as height change. Return referenceArea+areaSlope × height change and integrate that linear area relation from referenceStorage for storage.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| referenceStorage | Reference Storage | Required. Finite number; minimum 0. |
| referenceLevel | Reference Level | Required. Finite number. |
| currentLevel | Current Level | Required. Finite number. |
| referenceArea | Positive area on the same measurement basis as the sampled area. | Required. Finite number; minimum 0. |
| areaSlope | Area Slope | Required. Finite number. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| currentArea | Current Area | Required. Finite number. |
| storage | Storage | Required. Finite number. |
{
"input": {
"referenceStorage": 1000,
"referenceLevel": 10,
"currentLevel": 12,
"referenceArea": 100,
"areaSlope": 20
},
"output": {
"currentArea": 140,
"storage": 1240
}
}Limitations and assumptions
- Areas at both supplied levels must be nonnegative; areaSlope is area per height and storage can still be negative. This local model does not validate a reservoir curve or extrapolation range.
- Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
- Numeric calculations use binary floating point unless exact decimal-integer arithmetic is explicitly stated. No hidden measurement tolerance or decimal rounding is added; nonfinite or out-of-contract results are rejected. Numeric signed-zero results are exported as zero.
Alternative or Complementary methods
Check the full surveyed geometry and the physical model before interpreting storage, capacity, or safe operation.
References
Similar or alternative tools
- Reservoir Layer Storage Increment
Average nonnegative lowerArea and upperArea and multiply by nonnegative heightDifference for storageIncrement.
- Reservoir Storage Difference Depth
Subtract nonnegative startStorage from endStorage and divide storageDelta by positive referenceSurfaceArea for equivalentDepth.