Agriculture Sprinkler Precipitation Rate

Convert measured catch-can volumes/openings to local sprinkler precipitation rates and weight by represented ground area; no ideal spacing/discharge uniformity assumption.

Description

Catch-can measurements convert collected volume into local irrigation depth.

Catch-can measurements convert collected volume into local irrigation depth. Represented ground-area weights account for unequal sampling coverage when summarizing sprinkler precipitation rate.^[1]

Convert measured catch-can volumes/openings to local sprinkler precipitation rates and weight by represented ground area; no ideal spacing/discharge uniformity assumption.

When to use Agriculture Sprinkler Precipitation Rate

Use this tool to convert measured catch-can volumes/openings to local sprinkler precipitation rates and weight by represented ground area; no ideal spacing/discharge uniformity assumption.

Prepare the field, crop, soil or material measurements for the intended period. Confirm units, dry/wet bases and supplied parameters; keep paired observations aligned.

How to use Agriculture Sprinkler Precipitation Rate and understand its results

Prepare the field, crop, soil or material measurements for the intended period. Confirm units, dry/wet bases and supplied parameters; keep paired observations aligned.
Enter catchCollectedVolumesMl, catchOpeningAreasCm2, representedGroundAreasM2, testDurationMinutes using the field table and calculation rules, then run the tool.
Read localPrecipitationRatesMmPerHour, areaWeightedPrecipitationRateMmPerHour. The explanation below defines the units, signs, ordering and any flags or placeholder values.
If the tool reports an input issue, correct the values and run it again. Apply the stated assumptions when interpreting a successfully returned result.

Input field	Meaning	Value type; see rules below	Requirement
catchCollectedVolumesMl	Catch collected volumes ml	list of number	Required
catchOpeningAreasCm2	Catch opening areas cm2	list of number	Required
representedGroundAreasM2	Represented ground areas m2	list of number	Required
testDurationMinutes	Test duration minutes	number	Required

Pair nonnegative collected mL with positive can-opening cm² and positive represented ground m². Supply positive test minutes. Return local rates in mm/hour and their ground-area-weighted mean. Zero collected volume is valid.

Paired lists must be nonempty and have equal lengths.

localMm/hour = 10 volumeMl/openingCm² × 60/testMinutes

Units, indexing, boundary conditions and exceptional cases are defined in the calculation rules above.

Output field	Meaning	Value type
localPrecipitationRatesMmPerHour	Local precipitation rates mm per hour	list of number
areaWeightedPrecipitationRateMmPerHour	Area weighted precipitation rate mm per hour	number

json

{
  "input": {
    "catchCollectedVolumesMl": [
      10,
      20
    ],
    "catchOpeningAreasCm2": [
      100,
      100
    ],
    "representedGroundAreasM2": [
      1,
      3
    ],
    "testDurationMinutes": 10
  },
  "output": {
    "localPrecipitationRatesMmPerHour": [
      6,
      12
    ],
    "areaWeightedPrecipitationRateMmPerHour": 10.5
  }
}

Limitations and assumptions

Catch openings and represented ground areas play different roles and must not be interchanged. Wind loss, sampling quality and ideal sprinkler-spacing uniformity are not inferred.

Numeric inputs must be finite. Follow the calculation-specific rules for overflow, underflow and exceptional cases. Numeric lists are limited to 100,000 entries; the rules above may require smaller limits. Missing required fields, extra fields, wrong value types and violations of the calculation rules are input errors.

Alternative or Complementary methods

Use Agriculture Irrigation Efficiency: Audit independently measured applied/storage/runoff/drainage water balance, leaving unaccounted water explicit rather than calling all loss evaporation; not a uniformity or pump efficiency alias. For a complementary task, use Agriculture Center Pivot Application Depth: Inventory complete center-pivot revolution water by supplied nonoverlapping emitter annuli, retaining radial depth distribution/losses; no coordinate routing or uniform full-circle application assumption.

References

Agriculture Sprinkler Precipitation Rate — tool.io

Similar or alternative tools

Agriculture Irrigation Efficiency
Audit independently measured applied/storage/runoff/drainage water balance, leaving unaccounted water explicit rather than calling all loss evaporation; not a uniformity or pump efficiency alias.
Agriculture Center Pivot Application Depth
Inventory complete center-pivot revolution water by supplied nonoverlapping emitter annuli, retaining radial depth distribution/losses; no coordinate routing or uniform full-circle application assumption.