Description
Return union layer volume and unrepresented lake volume.
Waterbody volume and sampling support depend on depth orientation, layer geometry and interval overlap. A representative layer or covered depth can be summarized without recovering bathymetry or establishing representative ecological sampling. Unique covered thickness differs from the full span between distant intervals.
Return union layer volume and unrepresented lake volume.
When to use this tool
Use Lake Layer Overlap Volume Term when checking the stated waterbody geometry, layer volume or sampling-support convention.
How to use the tool and how it works
- Enter firstVolume, secondVolume, sharedVolume, lakeVolume. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read uniqueVolume, unrepresented. Use the output convention below.
Return union layer volume and unrepresented lake volume. Require nonnegative inputs and sharedVolume <= both layer volumes; unique = first+second-shared, unrepresented = lake-unique.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| firstVolume | First Volume | Required. Finite number; minimum 0. |
| secondVolume | Second Volume | Required. Finite number; minimum 0. |
| sharedVolume | Shared Volume | Required. Finite number; minimum 0. |
| lakeVolume | Lake Volume | Required. Finite number; minimum 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| uniqueVolume | Unique Volume | Required. Finite number. |
| unrepresented | lakeVolume-uniqueVolume; may be negative because no union<=lakeVolume condition is imposed. | Required. Finite number. |
{
"input": {
"firstVolume": 100,
"secondVolume": 80,
"sharedVolume": 20,
"lakeVolume": 200
},
"output": {
"uniqueVolume": 160,
"unrepresented": 40
}
}Limitations and assumptions
- Layer union may exceed lakeVolume and give negative unrepresented volume; actual 3D overlap and complete coverage are not validated.
- 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
Use verified bathymetry and sampling records with an appropriate complete spatial model for whole-waterbody quantities or ecological conclusions.
References
Similar or alternative tools
- Water Column Layer Overlap
Return depth overlap and union lengths of two water layers.
- Waterbody Volume Layer Contribution
Return one trapezoidal waterbody-layer volume.