Water and Sediment Quality in the Yukon River Basin, Alaska, During Water Year 2003

This report contains water-quality and sediment-quality data from samples collected in the Yukon River basin from March through September during the 2003 water year (WY). Samples were collected throughout the year at five stations in the basin (three on the main stem Yukon River, one each on the Tanana and Porcupine Rivers). A broad range of physical, chemical, and biological analyses are presented. [Summary provided by the USGS.]