Rain harvest Calculator
Rainwater harvesting is the process of collecting and storing rain for later productive use. Harvested Rainwater is rainwater that is captured from the roofs of buildings on residential property. Harvested rainwater can be used for indoor needs at a residence, irrigation, or both, in whole or in part.
Rainfall harvest = (RA * AF * 0.9 )
RA - Roof Area
AF - Amount of Rainfall
0.9 - Amount of total rainwater expected for harvesting.