How long should I run my sprinklers for?

Did you know different sprinklers have different watering rates so have different recommended run times? Whereas a typical pop-up might need to run for 10 t0 15 minutes and could be using 9 litres per minute,  some rotator type sprinklers that use 2.5 litres a minute might need to run for 40 minutes to get the desired result. Most sprinkler manufacturers publish precipitation rates and flow rates for their brands. Rates vary by model and nozzle selected.

Below is from a handy guide produced by Water Corporation which gives a broad-brush outline of sprinkler run times in typical Perth conditions. Run times are the same whether water is from a bore or mains supply.

Sprinkler Run Times Pop ups

Pop-up sprinkler

Pop-ups and fixed sprays

  • Typical watering rate (per hour): 35–45mm
  • Recommended run time for 10mm (standard drink): 13–16 minutes
  • Recommended reduced run time: 10 minutes

 

Gear-drive sprinkler

Gear-drive sprinkler

 

Gear-drive rotator sprinklers

  • Typical watering rate (per hour): 10–20mm
  • Recommended run time for 10mm (standard drink): 30–40 minutes
  • Recommended reduced run time: 25–30 minutes

 

Rotary nozzles

Rotary nozzles

Rotary nozzles

  • Typical watering rate (per hour): 10–15mm
  • Recommended run time for 10mm (standard drink): 40–60 minutes
  • Recommended reduced run time: 30–40 minutes

 

Dripline

Dripline

Dripline

  • Typical watering rate (per hour): 15–20mm
  • Recommended run time for 10mm (standard drink): 30–40 minutes
  • Recommended reduced run time: 20–30 minutes

 

 

You can visit Water Corporation and view their online guide here.  They also has handy tips on application rates and the testing of sprinkler efficiency using catch cups.