Rainwater Harvesting Rainwater harvesting is the process of collecting rainwater from impervious surfaces (like a roof) and storing it for later use.
Rainwater Harvesting Storage facilities that can be used to harvest rainwater include rain barrels and above-ground or below-ground cisterns.
Green Roofs Green roofs can provide high rates of rainfall retention at both commercial and residential scales given proper design. (Source: AIASMC)