How many litres of water can you harvest per year ?

Roof Area m2
Annual Rainfall mm
 

 

Calculator

To work out how much rainwater you can harvest from your roof (catchment area) use the simple calculator below:

Roof Area m2 Water Catchment: 0 Litres
Annual Rainfall mm
   

 

 

 

Rainwater Harvesting Systems

THE DRY SYSTEM
This system involves the downpipes from the house gutters feeding directly into the tank.  This is called a dry system as the feed pipes run dry after the rain has stopped.

water-catchment-1.jpg

 

THE WET SYSTEM
This system allows for the tank to be positioned further away from the water collection source and uses the principal that water will always find a level.  The pipes remain ‘charged’ so when it rains the water will spill over into the tank.

water-catchment-2.jpg

 

TRANSFER SYSTEM
This system allows the tank to be positioned anywhere on the property with an automatic transfer pump from the underground pit to the tank.

water-catchment-3.jpg

 

 

 

Annual Rainfall Map

pdf-icon.jpgAnnual Rainfall Map