Rainwater refers to any precipitation that falls as individual droplets of water. In California, rainwater may be collected from rooftops or other above ground hard or impervious structures.

Rain Gardens

Rain gardens capture stormwater runoff from rooftops or other impervious surfaces. Using native, drought-tolerant plants helps further reduce water usage. 

Rain Tanks

Rain tanks connect to roof downspouts and store runoff for later use. They can be used to water gardens and lawns and help reduce stormwater runoff impacts. 


Bioswales are slight depressions in the ground that improve water retention. The slopes in a bioswale direct water towards plants, helping them grow.