How we got these numbers
Enter head, rate, and adjustments to see step-by-step.
Formulas
- Adj. rate = base gpd × (1 + heat% + activity% + reserve% + wildlife%)
- Daily need = head × adj. rate
- Period total = daily × days
- Required tank (for interval) = daily × (interval hr ÷ 24)
- Tank duration (hours) = tank gal ÷ (daily ÷ 24)
- Trough gallons = L×W×D (ft³) × 7.4805
- Fill time (hr) = tank gal ÷ (GPM × 60)
Notes
- Use higher reserves for heat waves, lactation peaks, or long moves.
- Place tanks near shade and minimize walking distance to reduce consumption spikes.
Estimates only. Verify before purchasing materials or operating equipment.