Quick Fireground Tool

Tank Duration Calculator

Estimate how long tank water lasts at a given flow while preserving a reserve.

Inputs

Tank water (gal)

Total flow (GPM)

Usable water (%)

Desired reserve (gal)

Training/reference aid only. Follow department SOPs, instructor direction, manufacturer data, and local conditions.

Working time

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Usable water

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Time to empty

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Action cue

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Enter values and calculate.