Seventy-two stream sediment samples were collected near the Midnite mine in southern Stevens County, eastern Washington. The -82 mesh fraction of these samples was analyzed for acid extractable U, Fe, Mn, Cu, Pb, Zn, Ni, Co, Mo, Cd, Cr, Ag, V, and Se and total Fe, Mn, Hg, As, and organic C. Sample site locations and descriptions, the methods of sample collection, preparation and analysis, and the analytic data are presented.