Use this rainwater harvesting calculator to find the answer.
Roof based rainwater harvesting.
The main objective of rooftop rain water.
Wondering how much rainwater you could collect off your roof.
To calculate how much rainwater that you can harvesting use the equation below.
Land based rainwater harvesting occurs when runoff from land surfaces is collected in furrow dikes ponds tanks and reservoirs.
Calculating your roof surface area building plans offer the easiest way to calculate your roof surface area after all the numbers should all be on there.
Land based roof based.
Rooftop rain water harvesting is the technique through which rain water is captured from the roof catchments and stored in reservoirs.
Collecting rainwater runoff from roof surfaces which usually provides a much cleaner source of water that can be also used for drinking is called roof based harvesting while collecting rainwater runoff from land surfaces is called land based harvesting.
Rainwater is collected from a roof like surface and redirected to a tank cistern deep pit well shaft or borehole aquifer or a reservoir with percolation.
Harvested rain water can be stored in subsurface ground water reservoir by adopting artificial recharge techniques to meet the household needs through storage in tanks.
Using rainwater where appropriate conserves potable.
The image below shows how differences in roof slope do not change this building s catchment area.
512 490 0932 501 w powell ln 206 austin tx 78753 harvesting rain conserving water and managing stormwater in texas since 2004.
Dew and fog can also be collected with nets or other tools.
The practice of collecting rainwater from rainfall events can be classified into two broad categories.
The area is based on the footprint of the roof which can be calculated by finding the area of the building and adding the area of the roof s overhang.
Rainwater harvesting rwh is the collection and storage of rain rather than allowing it to run off.