Catch can & bucket test calculator
Check irrigation uniformity and application depth. Your readings stay on this page and are not saved.
Your first 4-month pass is free with UniformAg Pro. Save tests, keep an audit trail and send branded client reports. Then passes from $25 NZD for 4 months of unlimited tests.
Start your free passTest details
Client details are not saved or printed on the free report. Pro puts them on a branded report.
Where to place your cans
Drop the machine on the aerial map and set its size. Planned can positions appear on the map — nothing is saved. Live GPS can tracking while you walk the line comes with Pro.
Unlock the map, search for your farm and tap to place the pivot centre.
Set the machine size and can spacing to plan can positions.
Free planning aid only — nothing is saved. Pro adds saved layouts, sprinkler chart import and live GPS can tracking.
Your catches
Readings run from the centre outwards. Outer cans represent more area, so CU and DU are radius-weighted.
Separate with spaces, commas or new lines. Include zero catches.
Included with Pro
Save test & history Pro
Readings here vanish when you leave. Pro saves every test to the farm and irrigator, synced to your phone.
Audit trail Pro
Every changed can reading is logged with old and new values and times — evidence auditors can trust.
Live GPS can tracking Pro
See where you stand relative to each can on the aerial map while you walk the line.
Sprinkler chart import & nozzle diagnostics Pro
Load the sprinkler package and see which spans and nozzles to check.
Calibration checks & photos Pro
Last-tower speed vs panel setting, plus tagged photos in the report.
Test results
Ready for your readings
Enter at least two catches, or try an example.
Reading the numbers
- CU: overall evenness
- How closely catches match the mean. Higher is more uniform.
- DU: the driest quarter
- The mean of the lowest quarter of represented area, divided by the overall mean. Low DU means some areas receive much less water.
Take your test into the paddock
Save tests, plan can placement, use maps and GPS, add photos and produce PDF reports. Pro: passes from $25 NZD for 4 months of unlimited tests, unlimited tests on that irrigator. Your first irrigator is free for 30 days.