Description
Ideal trapezoidal storage volume per unit contour length.
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.
Ideal trapezoidal storage volume per unit contour length.
When to use this tool
Use Swale Contour Storage One Meter Term 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 topWidth, bottomWidth, depth. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read volumePerMeter. Use the output convention below.
Require topWidth>=bottomWidth>=0 and nonnegative depth; return volumePerMeter=(topWidth+bottomWidth)*depth/2.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| topWidth | Top Width | Required. Finite number. |
| bottomWidth | Bottom Width | Required. Finite number; minimum 0. |
| depth | Depth | Required. Finite number; minimum 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| volumePerMeter | m^3 per meter of swale if dimensions are in meters; cross-sectional area numerically. | Required. Finite number. |
{
"input": {
"topWidth": 2,
"bottomWidth": 1,
"depth": 0.5
},
"output": {
"volumePerMeter": 0.75
}
}Limitations and assumptions
- With widths and depth in meters the result is cubic meters per meter of swale length, numerically equal to cross-sectional square meters. No side-slope stability, infiltration, or flood-routing design is performed.
- 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
- Catchment Storage Remaining Volume
For nonnegative capacity, stored, and reserved return remaining=capacity-stored-reserved and available=max(0,remaining).
- Garden Contour Offset Gradient Term
Signed elevation offset under an explicitly supplied local grade.