A water budget estimates a volume over a period; a schedule decides when and how to deliver it. EPA says its Water Budget Tool is not an irrigation scheduler.

How to plan it
- Choose an area and period for the budget
- Use local climate and plant data to refine demand
- Use weather and field observations to set actual run times
Check before buying: Do not convert gallons directly to minutes without measured system flow.
Turn this into a quantity
Record your site measurements first. Then use a calculator with the depth, application rate, or coverage from the actual material specification.
Open drip irrigation calculatorSource and limits
US EPA WaterSense: Water Budget Tool. Local conditions and manufacturer guidance may call for different materials or installation details.