Over the years, local sponsors along with the Utah Division of Water Resources have been involved with numerous cloud seeding programs designed to increase the winter precipitation within different areas of the state. Studies indicate that these winter seeding projects generally increase the winter precipitation by 14 to 20%. Economic analysis of this sort of increase in precipitation shows that the benefits from the extra water far outweigh the operational costs of seeding. The pamphlet Weather Modification: Some facts about seeding clouds gives a good explanation of the science behind cloudseeding.
