An Atmospheric Water Resources Research Program

A progress report of the Bureau of Reclamation's Atmospheric Water Resources Research Program of practical application of weather modification techniques for improving the water supply of the Nation is presented. The program is divided into three categories: (1) Field experiments, (2) field support, and (3) laboratory studies. Descriptions of each of the projects and some of the important results are presented. Field experiments involve investigations of orographic and convective clouds during winter and summer in six major river basins of the West. Field support of various types is provided by three government agencies. The variety of problems studied in the laboratory include instrumentation, cloud physics, and evaluation techniques. Many studies are conducted in conjunction with field experiments.