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Mr. Griffith has been involved in the planning, conduct, and data analysis of a long-term research program funded by NOAA. This program is designed to evaluate the effectiveness of a summertime operational cloud seeding program conducted in western North Dakota to reduce hail damage and increase rainfall from summer thunderstorms. Mr. Griffith has served as project director for several of the field research programs. A variety of equipment from a number of different agencies has been utilized on this program including weather radar (standard and doppler), sophisticated cloud physics aircraft and remote sensing devices (i.e., microwave radiometers and acoustic doppler sounders). NA WC has provided real-time SF6 sampling equipment and personnel for several of these field research programs. This equipment has been installed on the University of North Dakota Cessna Citation II and South Dakota School of Mines T-28 cloud physics aircraft. NA WC has been involved in data analysis of the field data sets with special emphasis on the SF6 atmospheric tracer data. Several NA WC employees have been involved in this research program. Mr. Griffith has provided overall supervision of NA WC's involvement in this program. California Department of Water Resources Feasibility Study, 1986. NA WC was selected through a competitive bid process to perform a feasibility study of a winter cloud seeding program for a portion ofthe Feather River drainage located in the northern Sierra Nevada of California. The objectives of the study were to: I). Determine areas that would present the greatest opportunity for runoff enhancement, 2). Determine the seeding agent and delivery system that will maximize enhancement with minimal adverse social and environmental effects, 3). Estimate the increase in runoff to Lake Oroville that enhancement would have produced during years when unused storage in the reservoir would have been available; and 4). Determine the feasibility of proceeding to a design study and an Environmental Impact Report. The study concluded that the technological and financial aspects suggest that a beneficial and cost effective project is possible. Salt RiverlWyoming Range Winter Cloud Seeding Feasibility Study, 2005- present NA WC was selected through a competitive bid process to perform a feasibility study of a winter cloud seeding program for the Salt River and Wyoming Ranges located in western Wyoming. This study was funded by the Wyoming Water Development Commission. This study encompasses fourteen different tasks ranging from the development of a climatology for the area, the design of the program, estimates of increases in precipitation and enhanced streamflow, benefit/cost estimates and consideration of potential environmental impacts. Santa Barbara County Operational Weather Modification Program, Santa Barbara Flood Control and Water Agency, 1978 -1997, 2001- Present. NA WC was involved in the conduct of a weather modification research program in Santa Barbara County from 1967-1973. The positive results achieved from this program prompted Santa Barbara County to initiate an operational winter rainfall augmentation program which began during the 1977-78 winter season and has continued most winter seasons to 1997 and more recently since 2001. The goal ofthe program was to augment water supplies utilized by agricultural and municipal users. Equipment utilized has involved cloud seeding aircraft, ground based manually operated and remotely controlled ground generators and weather radar. Mr. Griffith has served as the supervisor of these programs.