In August 1984, the USGS, in conjunction with the Department of Energy / Rockwell Hanford Operations, conducted a long-range seismic refraction/wide-angle reflection survey across the central Columbia plateau (CCP). This report catalogs seismic data collected along a NW-SE transect (CCP transect). The CCP transect was centered on the Hanford Site and trended approximately N 50 E, from north-central Oregon to east-central Washington.