A stream sediment and water survey was carried out in the Coal River area of southeastern Yukon during the summer of 2005. This survey was carried out under a Joint Research Agreement between the Yukon Government (Oil & Gas and Mineral Resources Division of the Department of Energy, Mines and Resources) and the Federal Government, acting through the Earth Science Sector's Metals in the Environment Program. Analytical data accompany this document for 50 elements in stream sediments and 60 variables in waters from a total of 174 sites sampled in 2005. National Geochemical Reconnaissance protocol was used for the collection, preparation and analysis of waters and silts. Samples were collected in the Yukon Territory portion of NTS map sheet 95E, west of the height of land that marks the boundary between Yukon and Northwest Territories and separates the Coal River and Flat River drainage basins.

NGR surveys were originally conducted in the McQuesten map area in 1987 and 1988. Stream sediment and water samples were collected from a total of 841 sample sites. A total of 841 original samples were selected for reanalysis. Representative 2 gram splits were successfully recovered from 840 samples. Samples were analysed by an ultra-trace aqua-regia digestion ICP-MS package for 53 elements.

A Yukon-wide compilation of 1102 till geochemistry samples collected during 4 regional till sampling surveys conducted by Yukon Geological Survey in the Faro/Anvil Range, Weasel Lake, Finlayson Lake and Glenlyon/East Carmacks areas between 1998 and 2002. Complete analytical results for more than 40 elements are included in the attribute table for each sample.

NGR surveys were originally conducted in the Glenlyon map area in 1988. Stream sediment and water samples were collected from a total of 1378 sample sites. A total of 1096 original samples were selected for reanalysis. Representative 2 gram splits were successfully recovered from 1095 samples. Samples were analysed by an ultra-trace aqua-regia digestion ICP-MS package for 53 elements.

NGR surveys were originally conducted in the Watson Lake map area in 1995. Stream sediment and water samples were collected from a total of 1117 sample sites. A total of 824 original samples were selected for reanalysis. Representative 2 gram splits were successfully recovered from 824 samples. Samples were analysed by an ultra-trace aqua-regia digestion ICP-MS package for 53 elements.

NGR surveys were originally conducted in the Dawson map area in 1976 and 1977. Stream sediment and water samples were collected from a total of 1738 sample sites. A total of 1129 original samples were selected for reanalysis. Representative 2 gram splits were successfully recovered from 1091 samples. Samples were analysed by an ultra-trace aqua-regia digestion ICP-MS package for 53 elements.

This data package contains results for parts of the Carmacks survey area (NTS 115I). This information has been provided in a variety of digital formats. PDF files include survey descriptions and details regarding methods, analytical data listings and summary statistics. Raw digital data of original field and analytical information plus new reanalysis results are included in Microsoft®Excel (XLS) format. NGR surveys were originally conducted in the Carmacks map area in 1985 and covered parts of NTS map sheet 115I (Geological Survey of Canada, 1986). Stream sediment and water samples were collected from a total of 951 sample sites. The work was undertaken by the GSC in conjunction with the Department of Indian Affairs and Northern Development, and the government of Yukon under the Canada-Yukon Mineral Development Agreement (1985-1989). As part of the 2014 Yukon Database Upgrade Project, original material collected from the 951 sample sites were selected for reanalysis. Representative 2 gram splits were successfully recovered from a total of 985 samples. Due to a deficiency of available material, 4 samples were not recovered. The samples were delivered to Bureau Veritas Commodities Canada Ltd. (Vancouver) and were analyzed by an ultra-trace aqua-regia digestion ICP-MS package for 53 elements.

NGR surveys were originally conducted in the Mayo map area in 1987 and 1988. Stream sediment and water samples were collected from a total of 861 sample sites. A total of 861 original samples were selected for reanalysis. Representative 2 gram splits were successfully recovered from 861 samples. Samples were analysed by an ultra-trace aqua-regia digestion ICP-MS package for 53 elements.

Stream sediment and water geochemistry for the Stewart River map area. The following stream sediments were analyzed: Ag, As, Au, Ba, Cd, Co, Cu, F, Fe, Hg, Loss-on-ignition, Mn, Mo, Ni, Pb, Sb, Sn, U, V, W, ,Zn. Stream waters were analyzed for pH, uranium, and fluoride.