Sprinkler Precipitation Rate Calculator

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Estimates the precipitation rate of a sprinkler system, indicating how quickly water is applied to a lawn or garden.

How To Use

How to use this calculator

Start with your values, or try a preset.

Step 1

Enter Sprinkler Flow Rate and Area Covered by Sprinkler in the units shown.

Step 2

Read Precipitation Rate in the results panel. Results update as you change the inputs.

Step 3

Choose a preset to load an example, then adjust the values for your situation.

Worked Examples

See the inputs and their calculated results.

Sprinkler Flow Rate: 0.75 gallons per minute (GPM); Area Covered by Sprinkler: 50 square feet (sq ft)

Precipitation Rate: 1.44 inches per hour

Sprinkler Flow Rate: 1.5 gallons per minute (GPM); Area Covered by Sprinkler: 200 square feet (sq ft)

Precipitation Rate: 0.72 inches per hour

Sprinkler Flow Rate: 3 gallons per minute (GPM); Area Covered by Sprinkler: 500 square feet (sq ft)

Precipitation Rate: 0.58 inches per hour

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