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3. Barker, R., 2009. North American Interstate Weather Modification Council (NAIWMC) News: Idaho Power’s cloud seeding efforts keep water flowing over dams and may save you money. Idaho Statesman. .
4. BOR (Bureau of Reclamation), 2006. Drought Conditions in the West. Online feature from the Upper Colorado Regional Office of Reclamation. .
5. Cloud seeding to enhance snowfall. Colorado Water;Breed;Newslett. Water Center Colorado State Univ.,2008