Agriculture & entered water budgets
Irrigation Volume, Depth & Runtime Calculator
Convert a user-selected net application depth into gross water volume and constant-flow runtime.
178 / IRRIGATION VOLUME, DEPTH & RUNTIME
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Read the method and exampleYOUR CALCULATION
Relate a user-selected net irrigation depth to gross volume and runtime.
Gross volume at entered efficiency (m³)
Equivalent gross application depth (mm)
Constant-flow runtime
Illustrative inputs loaded. Replace them with your own assumptions.
How the irrigation volume, depth & runtime calculator works
One hectare-millimetre equals 10 m³. Multiply hectares by selected net depth and 10 for net event volume. Divide by application efficiency for gross delivered volume and by measured delivered flow for runtime.
Positive demand with zero flow has no finite runtime. Zero area or net depth requires zero event runtime. Gross equivalent depth is the chosen net depth divided by entered efficiency.
The depth and efficiency come from your reviewed plan, not a soil/weather/crop database. No water requirement, well sustainability, pump size, distribution uniformity, runoff, infiltration or water-right determination is supplied.
Worked example
Two hectares with a chosen 20-mm net depth need 400 net m³. At 80% application efficiency, delivered volume is 500 m³, requiring 20 hours at 25 m³/h. At 50 m³/h, runtime is 10 hours.
Sources and assumptions
The source material explains the underlying calculation or pricing structure. Entered prices, costs, schedules and scenario choices are your assumptions; this tool does not obtain supplier quotes or predict actual results.
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