Description
Budget against caller-supplied water-depth observations, without crop requirement lookup.
Garden and resource-design calculations combine measured lengths, areas, water volumes, material fractions, travel, and evidence records. A useful budget needs consistent units and clear overlap, exclusion, and denominator rules. Supplied geometry and efficiencies describe a model rather than verified site performance.
Budget against caller-supplied water-depth observations, without crop requirement lookup.
When to use this tool
Use Perennial Garden Water Budget One Crop when you have supplied site dimensions or resource records and need the stated geometry, budget, or coverage measure.
How to use the tool and how it works
- Enter area, suppliedDepth, effectiveRain, storedCredit. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read netVolume. Use the output convention below.
For nonnegative area, suppliedDepth, effectiveRain, and storedCredit return netVolume=max(0,area*(suppliedDepth-effectiveRain)-storedCredit).1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| area | Area in compatible squared-length units. | Required. Finite number; minimum 0. |
| suppliedDepth | Supplied Depth | Required. Finite number; minimum 0. |
| effectiveRain | Effective Rain | Required. Finite number; minimum 0. |
| storedCredit | Stored Credit | Required. Finite number; minimum 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| netVolume | Net Volume | Required. Finite number. |
{
"input": {
"area": 10,
"suppliedDepth": 20,
"effectiveRain": 5,
"storedCredit": 30
},
"output": {
"netVolume": 120
}
}Limitations and assumptions
- Area times depth must use the storedCredit volume unit. Excess rain or credit floors the result at zero; the depth is supplied rather than a crop-water recommendation, and soil dynamics and application losses are omitted.
- 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. Signed zero is exported as zero.
Alternative or Complementary methods
Use verified site measurements and suitable physical or resource models for a complete design. Check units, overlap, losses, capacity, and whether an accounting share represents the intended quantity.
References
Similar or alternative tools
- Rainfed BED Dry Period Storage Gap
For nonnegative stored, reserve, dailyLoss, and days return endingStorage=stored-dailyLoss*days and reserveMargin=endingStorage-reserve.
- Catchment Storage Remaining Volume
For nonnegative capacity, stored, and reserved return remaining=capacity-stored-reserved and available=max(0,remaining).