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Other Past Issues:

Cloud Seeding

Volume 6 Number 2 March/April 2007

As western water managers look for ways to diversify their water portfolios, they’re increasingly looking up to the clouds, wondering if they can squeeze any additional water from them. Is cloud seeding a viable new source of water for the West? Perhaps. Under certain conditions, microscopic-sized materials injected into clouds can cause more precipitation to occur than would have fallen naturally. But many questions remain regarding the details of the process, the success of programs, and the impacts of air pollution. Such questions have held up federal funding of research programs, but some local groups are proceeding on their own.

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