This open file contains analytical data for stream silt sediment, stream water and field data - originally published as GSC Open File 1649, as well as Inductively Coupled Plasma Mass Spectrometry (ICP-MS) re-analysis data of archived stream silt sediment samples. This publication includes site-specific field observation and analytical data for stream sediments and waters from 917 sites. Silt sediments were analysed for 38 elements plus loss-on-ignition and corresponding waters were analysed for uranium, fluoride and pH.