Weather modification is considered a feasible means of augmenting the natural water supply. Utah enacted weather modification legislation in 1973, and an operational cloud seeding program started in 1976. The field program, which usually extends from November to April, is funded jointly by the state and local water interests. Statistical analysis of the cloud seeding program since 1976 has shown an average increase in precipitation of 10% at $2.50 per acre foot.
COBI contains unaudited data as presented to the Legislature by state agencies at the time of publication. For audited financial data see the State of Utah's Comprehensive Annual Financial Reports.