Wells & water/ CALCULATOR
Well supply and peak-demand buffer
Compare a measured source flow and usable stored water with one defined period of peak household demand.
Use the working capacity of the storage vessel before applying the protected reserve below.
Keep a deliberate reserve for controls, sediment, water quality or operational uncertainty.
Use a defensible sustained supply rate for the event, not a brief recovery observation.
Combine only the fixtures and uses expected to overlap during this event.
Choose a real operating period such as a morning peak, irrigation block or tank refill.
Usable storage above reserve
800 L
Source contribution during event
540 L
Water demanded during event
1,125 L
Storage required during event
585 L
Storage margin after event
215 L
Interpretation:The peak event leaves 215 L of usable storage above the protected reserve.
Constant source flow and demand throughout one defined event, with the source able to contribute while demand occurs. The model excludes pump power, pressure, treatment flow limits, tank turnover, water age, well drawdown, recovery between events and required fire storage. Confirm sustainable yield, controls and potable-water requirements separately.