The Nevada portion of the U. S. Bureau of Reclamation Weather Damage Modification Program focused on studies of snowpack augmentation for drought mitigation. The Nevada WDMP combined atmospheric and hydrologic modeling studies with field observations acquired during the winter of 2003-04. Results to date from each of four main research task areas are presented. Modeling results and field observations (radiometric, aircraft, and physical and chemical snow sample analysis) from the Walker River Basin are the first in that region that attempt to evaluate the impacts of Nevada's operational wintertime cloud seeding on snowpack and streamflow.