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WaterQualityWatch -- Continuous Real-Time Water Quality of Surface Water in the United States
Ortiz, Roderick F., 2004, Methods to Identify Changes in Background Water-Quality Conditions Using Dissolved-Solids Concentrations and Loads as Indicators, Arkansas River and Fountain Creek, in the Vicinity of Pueblo, Colorado: U.S. Geological Survey Scientific Investigations Report 2004-5024, 20 p. http://pubs.usgs.gov/sir/2004/5024/
Other publications may be found on the State's surrogate website.
Link to the State's surrogate website.