Analytical data for stream silt sediment, stream water and field data - originally published as GSC Open File 2363, 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 observations and analytical data for stream sediments and waters from 783 sites. Silt sediments were analysed for 49 elements plus loss-on-ignition and corresponding waters were analysed for uranium, fluoride and pH.