Irrigation Water Usage Calculator

Calculate water requirements for irrigation using USDA and EPA formulas

Area to Irrigate (sq ft)(e.g., 1000)

Crop Type

Soil Type

Irrigation System

Irrigation Frequency (days between watering)(e.g., 3)

Growing Season Length (days)(e.g., 120)

Average Monthly Rainfall (inches)(e.g., 2)

Daily Evapotranspiration (inches)(e.g., 0.25)

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Quick Tips

1Use current environmental data
2Consider seasonal variations
3Document calculation assumptions
4Update calculations periodically