Spraying and Irrigation

These calculators set up water and spray equipment. Sprayer calibration and the nozzle chart give flow and gallons per acre from nozzle, speed and spacing; the irrigation and sprinkler calculators give flow, application rate and watering time.

Tools in this group

• Irrigation Calculator — Work out drip zone flow and run time, the application rate of a system, or the velocity in an irrigation pipe.
• Irrigation System Design Calculator — Enter the area, peak water use and your pipe to get the system flow, pipe velocity, friction loss and the pressure the pump must deliver.
• Pond Volume Calculator — Enter the pond's size at the water surface and its depth to get the volume in gallons, acre-feet, liters and cubic feet.
• Spray Nozzle Chart (ISO Colour Code and Flow) — Pick an ISO nozzle size, pressure, speed and spacing to get the flow per nozzle and gallons per acre, or enter a target rate to find the size.
• Sprayer Calibration Calculator — Enter nozzle output, ground speed and nozzle spacing to get gallons per acre (or L/ha), or the nozzle flow for a target rate.
• Sprinkler Calculator — Enter your heads' flow and spacing to get the zone's precipitation rate, how long to water and how many heads a zone can run.