Rainwater harvesting calculator

Rain is the primary source of all the water resources. It is considered as the purest water in all the water resources. With proper rainwater harvesting method and planning, naturally soft Rainwater can be used for all 365 days in a year.  

Trying to calculate potential savings of Rainwater on your house/apt/building can be a daunting task.
No worries, this calculation is not complicated as they seem. 
A simple walk through of calculation and its result will provide astonishing insight about Rainwater savings potential. It also gives you the basic knowledge to design a good rainwater harvesting method for your house/apt/building.

What you need to calculate the potential savings of Rainwater

  • Rainwater catchment area:  Usually your house or building’s Roof area. Ex: 1200 Sqft or 100 Sqm
  • Rainfall data: It could be daily or seasonal or annual Rainfall data of your area. Check you district’s rainfall data here. 
  •  Water requirement per day : Approximately 150 to 200 liters per head per day.

How much?

Rainwater can be harvested by you

Rainwater catchment Area: The total amount of rainwater that is received in the form of rainfall over an area is called the rain water catchment of that area.

Efficiency of Rainwater collection: The amount of rainwater that can be effectively harvested.