USGS: Science Topics: surface water quality

Science Topics

Surface water quality

Chemical, physical, and biological characteristics of water in lakes, rivers, or streams related to its fitness for use.

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Water resources of Webster Parish [More info]: In 2005, about 9.52 million gallons per day (Mgal/d) of water were withdrawn, including about 9.33 Mgal/d from groundwater and 0.19 Mgal/d from surface-water. Public supply use accounted for 70% of the total.
Water security-National and global issues [More info]: Outlines the factors that affect freshwater supply and quality, emphasizing the social and geopolitical aspects of policy decisions.
WaterQualityWatch -Continuous Real-Time Water Quality of Surface Water in the United States [More info]: Maps and explanations of continuous real-time data collection methods and results, including water temperature, turbididty, specific conductance, dissolved oxygen, pH, and stream discharge values.
Wildfire effects on source-water quality--Lessons from Fourmile Canyon fire, Colorado, and implications for drinking-water treatment [More info]: Stream discharge and nitrate concentration increased downstream of the burned area during snowmelt, but these were probably within the treatment capacity of most drinking-water plants, and limited changes were observed in downstream ecosystems.

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