Reconcile one direct irrigation collection-volume and elapsed-time observation with transparent GPH, GPM, L/h and L/min conversions.
A quick decision brief for this specific tool
One de-identified completed owner, irrigation-evaluator or reviewed-training direct collection-flow observation; responsible measurement/revision/date/reviewer; exact outlet/emitter/device/zone point; active source/pump/valve state; collection-vessel and timing-device calibration/resolution; capture/start-stop/leakage method; filtering/flushing/air-purge/stabilization; measured pressure/elevation/location state; exact product/lot/rated-pressure/flow-curve record; filter/regulator/flush-end/backflow and source-water condition; sampling/repeats; uniformity/scheduling, hydraulic-capacity, safety/code, tolerance and review/retention boundaries; primary supported volume/time units and values; completed reported source/value/unit; and an optional same-point independent source with volume, time and reported flow
Normalized primary volume and elapsed time; reproduced GPH, GPM, L/h and L/min; completed reported-minus-reproduced difference; and optional independent internal and primary-comparison differences
Validate every provenance field, exact choice and bounded positive value; normalize U.S. gallons/liters/milliliters to liters and seconds/minutes to seconds; divide volume by time; convert with 1 U.S. gallon = 3.785412 liters; compare the independently entered completed value in its exact unit; require optional independent source, volume, time and reported flow all-or-none; reject unsupported rates; and apply no pressure correction or device aggregation
Choose your path
Reconcile one completed direct irrigation collection-volume and elapsed-time observation at one exact point and operating state without applying a universal pressure correction, aggregating devices, sizing a zone or approving a system.
Replace nominal hose-bib or emitter assumptions with one traceable bucket/cylinder and stopwatch observation.
Freeze the exact point and active operating state, identify the checked collection and timing devices, then enter raw volume, elapsed time and the completed reported rate.
Sees transparent GPH/GPM/L-per-hour/L-per-minute conversions and a signed completed-record difference without a zone-size recommendation.
Keep pressure, location, filter/flushing state and device behavior attached to a direct discharge observation rather than silently correcting a catalog rating.
Retain the sample location, measured pressure state, stabilization, product/lot/curve and repeatability records before reconciling the collection interval.
Gets one exact observed point-flow record while distribution uniformity, application rate and scheduling remain explicitly outside the result.
Prevent a different valve state, point, instrument or unit basis from being presented as corroboration or hydraulic approval.
Enter the optional independent source, volume, elapsed time and reported flow only when point and operating state match.
Receives deterministic all-or-none validation and separate independent internal/primary differences without pipe, capacity, backflow, safety or code conclusions.
Outputs and checklists are planning aids. Review the linked current authorities and the records, terms, instructions, and requirements that apply to your exact situation before a consequential decision.
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Identify the exact outlet or emitter, active source/valve/zone state, collection vessel, timing device, capture method, stabilization and pressure context. Another point or state requires another record.
Normalize the observed volume to liters and elapsed time to seconds, then divide volume by time. The engine applies no catalog-rating assumption or universal pressure correction.
observed flow = collected volume ÷ elapsed timeReport GPH, GPM, liters per hour and liters per minute using the NIST U.S.-gallon-to-liter relationship. Unit conversion does not improve instrument or sampling accuracy.
1 U.S. gallon = 3.785412 litersCompare the independently entered completed rate with the reproduction. An optional same-point repeat keeps its own volume, time, reported rate and signed differences.
Updated: August 2026
Reproduce one labelled emitter's measured discharge from a graduated-cylinder volume and stopwatch interval at the recorded operating pressure.
Convert one checked bucket volume and fill time into equivalent flow units without inferring how many devices or zones the source can support.
Compare a same-point, same-state repeat with the primary observation while keeping uniformity, repeatability acceptance and diagnosis with the evaluator.
Use direct measurements and retain the exact product curve and pressure-compensating status; no universal pressure correction is valid for every device.
Keep source, residual pressure, pipe/tubing, elevation, fittings, friction, simultaneous demand and device limits in a separate hydraulic design record.
Retain the full sampling plan, repeats, pressure distribution, low-quarter calculation, crop demand and responsible tolerance/disposition outside this record.
Check one completed direct volume-and-time observation at one exact irrigation point and operating state. Retain the raw instruments, pressure/state evidence and independent repeat without turning the result into pressure correction, uniformity, scheduling or zone-design advice.