Concentrations and annual fluxes for selected water-quality constituents from the USGS National Stream Quality Accounting Network (NASQAN), 1996-2000

By Valerie J. Kelly, Richard P. Hooper, Brent T. Aulenbach, and Mary Janet

Water-Quality Data

• Download instructions
• Parameter code definitions and units of measure
• Suspended sediment data
• Field parameters, major ions, nutrients
• Trace elements
• Pesticides
• Sediment chemistry data

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