Sediment Trap Efficiency Calculator
Matched actual upstream/downstream sediment and independent storage-change closure, apparent negative retention retained, not a reservoir efficiency-size empirical curve. Caller independently establishes units, regime, calibration and applicability; this does not establish design-code compliance, authenticity, operational safety, treatment efficacy or a validated forecast.
Description
A sediment balance compares inflow mass, outflow mass and storage change.
A sediment balance compares inflow mass, outflow mass and storage change.1
Its closure residual and efficiency preserve signs rather than assuming every observation indicates net trapping. Use this tool to calculate sediment Trap Efficiency from the supplied measurements and assumptions.
When to use Sediment Trap Efficiency Calculator
Use this tool to calculate sediment Trap Efficiency from the supplied measurements and assumptions. Establish the SI units or caller unit basis, load signs, measurement interval, model conditions and independently chosen coefficients or references.
How to use Sediment Trap Efficiency Calculator and understand its results
- Establish the SI units or caller unit basis, load signs, measurement interval, model conditions and independently chosen coefficients or references.
- Enter observedUpstreamSedimentKg, observedDownstreamSedimentKg, callerIndependentlyMeasuredStorageChangeKg, using the field meanings and rules below, then run the tool.
- Read observedDeliveryTrapEfficiency, signedSedimentBalanceResidualKg. Interpret the fields using their units, signs and evidence conventions below.
- If input validation fails, correct the reported field and run again. Before applying the result, check reference scope, model assumptions and any missing evidence or placeholder values.
| Input field | Meaning | Value type | Requirement |
|---|---|---|---|
| observedUpstreamSedimentKg | Observed upstream sediment kg | list of number | Required |
| observedDownstreamSedimentKg | Observed downstream sediment kg | list of number | Required |
| callerIndependentlyMeasuredStorageChangeKg | Caller independently measured storage change kg; caller assertion or measurement requiring independent evidence | list of number | Required |
Enter nonempty aligned nonnegative incoming and outgoing masses plus finite signed storage changes in one mass unit. Require positive total incoming mass. Captured mass is total incoming−outgoing, efficiency is captured/incoming, and closure is captured−totalStorageChange. Negative captured mass and efficiency are retained; efficiency is a fraction, not percent.
captured=Σin−Σout; efficiency=captured/Σin; closure=captured−ΣstorageChange Use the exact units, boundary rules, ordering and missing-evidence conventions above.
| Output field | Meaning | Value type |
|---|---|---|
| observedDeliveryTrapEfficiency | Observed Delivery Trap Efficiency; follow the units, sign, ordering and evidence convention stated above | number |
| signedSedimentBalanceResidualKg | Signed Sediment Balance Residual Kg; follow the units, sign, ordering and evidence convention stated above | number |
{
"input": {
"observedUpstreamSedimentKg": [
10,
20
],
"observedDownstreamSedimentKg": [
5,
15
],
"callerIndependentlyMeasuredStorageChangeKg": [
1,
-1
]
},
"output": {
"observedDeliveryTrapEfficiency": 0.3333333333333333,
"signedSedimentBalanceResidualKg": 10
}
}Limitations and assumptions
Its closure residual and efficiency preserve signs rather than assuming every observation indicates net trapping. Interpretation depends on the units, sampling scope and exact model described above.
All listed fields require explicit values. Unexpected fields, incorrect types, nonfinite numbers and sparse evidence arrays fail validation; the specific bounds and alignment requirements are stated above. Extremely large inputs or outputs can also be rejected. An input error is distinct from a successful result reporting false, no matches or missing evidence.
Alternative or Complementary methods
Use Sediment Transport Capacity Calculator for this related task: A Meyer-Peter-Müller-type expression estimates transport per unit width above a critical Shields value.
Use SCS Curve Number Runoff Calculator when its separate inputs and assumptions fit the question: The SCS curve-number runoff model relates precipitation to potential retention and initial abstraction.
References
-
Sediment Trap Efficiency Calculator — tool.io
Similar or alternative tools
- Sediment Transport Capacity Calculator
A Meyer-Peter-Müller-type expression estimates transport per unit width above a critical Shields value.
- SCS Curve Number Runoff Calculator
The SCS curve-number runoff model relates precipitation to potential retention and initial abstraction.