Rainwater harvesting

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Yield: 1 acre * 1 inch rainfall per year = 6.273e+6 in^3 / year = 27160 gallons per year Usage estimate:

  • 50-70% of household usage is outdoors (e.g. lawns and gardens), average American uses 100 gal/day source: CT DPH
  • Average American uses 82 gal/day source: USGS
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