Rainwater harvesting Projects

About rainwater harvesting

Rainbarrels line the side of a garage.Rainbarrels line the side of a garage.This page includes the main article, web resources, city resources, and links to other water harvesting organizations around the county.

Harvesting rainwater can reduce our need--and demand--for water transport systems that threaten the health of the water cycle and our local environments.

On any house lot, there are three potential sources for harvesting the rain: Direct rainfall, street harvesting, and roof harvesting.

Rainfall Data and Calculations

Sample charts and calculations looking at rain potential, frequency, and patterns in San Francisco and Berkeley, California. Sample charts show how large a tank would be needed to store rainfall from this area.