Rainwater First Flush Diverter
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Basics
- 10-50 gallons per 1000 sf roof need to be diverted: [1]
- For 1250 sf Seed Eco-Home roof - 12-60 gal needed
- Examining prices below, it's best to use 6" pipe - more storage, lower cost.
- If store 30 gallons - 30/600 = 5% of rainfall in 1" of rain
- 1" of rain is 800 gallons or $8 at a rural water rate of 1 cent per gallon [2]. That is $320 value of water per year just from rooftop catchment.
Sourcing
- 18 gallons/7 feet
- 8" cap is $33 - [5]
- 6" pipe - $40 for 2x the length.
- 29 gallons per 20'