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How to estimate the rainwater harvesting potential of a residential building?

Questions › Category: Rainwater › How to estimate the rainwater harvesting potential of a residential building?
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Mayank Gala asked 6 years ago
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How to estimate the rainwater harvesting potential of a residential building?
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How to estimate the rainwater harvesting potential of a residential building?
Description
Installing the correct rainwater harvesting system is essential to efficiently conserve rainwater. To do so, it is important to know how much water can be collected or what can be rainwater harvesting potential.
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GreenSutra
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Team GreenSutra® Staff answered 6 years ago
Rainwater harvesting potential of a particular catchment area is the amount of rainwater that can be effectively harvested from the said catchment area.To calculate the rainwater harvesting potential, the following data is required:

  • Surface area of catchment in sq. ft.
  • Runoff Co-efficient of catchment surface.
  • Amount of water received in rainfall in mm.

(Amount of rainfall can be found out from local authorities website or any other local news sources)

Formula to calculate rainwater harvesting potential:

Rainwater Harvesting Potential = Surface Area of catchment (sq. ft.) x Runoff Co-Efficient of Catchment Surface x Amount of Rainfall (mm)