In January 2014, Governor Jerry Brown proclaimed a State of Emergency throughout California due to severe drought conditions. In response to the Governor's proclamation, the Los Angeles County Board of Supervisors directed Public Works to pursue enhancing local water supplies by reviving a cloud seeding project previously approved by the Board in 2009. Public Works' Cloud Seeding Project will evaluate and identify suitable watersheds to target in the San Gabriel Mountains based on their current condition with respect to burn history, and implement cloud seeding through the installation and operation of up to 10 land based cloud seeding generators. The operation of the cloud seeding generators will depend on weather forecasts and consultant analysis and is anticipated to increase rainfall in the mountains by up to 15 percent.
Cloud seeding activities commenced in Winter 2015.