Data from selected U.S. Geological Survey national stream water-quality monitoring networks (WQN)

Contains data from two USGS national stream water-quality networks, the Hydrologic Benchmark Network (HBN) and the National Stream Quality Accounting Network (NASQAN). Data includes sampling, streamflow measurements, station attributes, and quality control data, as well as documentation of important changes in field and laboratory methods, etc. Also contains USGS open-file report 96-337, Data from selected U.S. Geological Survey national stream water-quality monitoring networks (WQN) on CD-ROM.