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Rainwater Harvesting Tank Sizer

Size a cistern from roof catchment area and local rainfall.

Result

Annual capture

33642 gal

Recommended tank

2804 gal

About this tool

Pick roof area, rainfall region, and demand to get recommended tank gallons with monthly supply/demand summary. Targets r/OffGrid and r/Permaculture 'how big a cistern' threads.

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