Rainwater Capture Volume Estimator

Estimate early capture volume from catchment area, rainfall, and collection factor. Use it to prepare a better RFQ before asking Storm Manage for a modular underground storage layout.

Inputs

Formula: area x rainfall mm x collection factor / 1000.

Screening Result

150 m3 Estimated gross capture for the rainfall event.

Send this number with reuse demand, overflow route, load exposure, and access notes.

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Engineering notes

Catchment is only the start. Rainfall depth drives event volume. Collection factor accounts for losses. Roof area should come from drawings. Overflow still needs a route. Reuse demand changes storage. Pumps add another check. Sediment needs pretreatment. Local code stays local. A 75 mm event on 2,500 m2 at 80 percent screens near 150 m3, which is enough to begin an underground layout discussion but not enough for final design. Engineer review comes next. Procurement should attach sketches. Contractors need access points. Distributors need packing notes. Storm Manage can review the target. Final sizing belongs with the project team. Good inputs reduce quote loops. Ready files move faster.