During August 1980, a meteorological field program was conducted in Corral Gulch in the Piceance Basin of northwestern Colorado. The purpose of this study was to investigate and document the characteristics of the nocturnal drainage and upper level winds. Intensive meteorological measurements were made on four experimental nights using a network of surface stations, free and captive balloon vertical profilers, an acoustic sounder, and the release and sampling of sulfur hexafluoride (SF/sub 6/) tracer. This report is a summary of the experimental design and the data collected during this study, which will be analyzed and interpreted for air quality implications in subsequent articles.