The following section provides a summary of the Yukon River Basin site characteristics (table 1). References for the description of sample collection and processing of samples for various water-quality constituents are given in Schuster (2003). Sample analysis results for field measurements, major ions, nutrients, organic and inorganic carbon, trace elements, suspended sediment concentrations, and trace elements in suspended sediments during WY 2004 are given in tables 2-6. The data provided in this section also are available from the USGS NWIS database (http://waterdata.usgs.gov/nwis/).
