Evaluation of Idaho's 1992-1993 Winter Cloud Seeding Program

摘要

The State of Idaho requested that the Bureau of Reclamation perform an independent evaluation of the seeding program. Reclamation was asked to statistically evaluate the program by comparing target and control areas. Reclamation was asked to physically evaluate the program in terms of the reasonableness of seeding generator placement, overall output of effective IN (ice nuclei), general conduct of the program, and other factors. Neither the statistical nor the physical approach was expected to provide definitive answers concerning program effectiveness because of the limited duration of the seeding, the lack of randomization, and the lack of supporting physical measurements. Nevertheless, a 'first look' evaluation was judged useful for planning future precipitation management activities within the State. The State also requested that Reclamation make recommendations for improving the operational seeding program in the future.