Planetary Tools FunHow to use it

Planetary Tools Fun / Browser tools

Rain Barrel Sizing Game

Three storms, three storage decisions. Pick the smallest tank that can hold the runoff and see how close you get.

Scenario

Choose a tank

Tank report

0 of 3 efficient choices

Choose a tank to see the result.

How to use it

Estimate gallons using roof area in square feet × rainfall in inches × 0.623 × collection efficiency. The game uses a fixed efficiency of 85%. See the Seattle Public Utilities guide for the US unit conversion.