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U.S. Geological Survey personnel collecting a water quality sample at the Missouri River at Hermann, Missouri in July, 2011. Photo by Kelly Brady, USGS

Nitrate in the Mississippi River and its tributaries, 1980 to 2010: Are we making progress?

Trends in Nitrate from 1980-2010

• Nitrate in the Mississippi River and Its Tributaries, 1980–2010: An Update (Press Release | Report)
        
  
• Article describing trends from 1980-2008

Nitrate Trends (1980-2010)

• Mississippi River at Clinton, IA
• Iowa River at Wapello, IA
• Illinois River at Valley City, IL
• Mississippi River below Grafton, IL
• Missouri River at Hermann, MO
• Mississippi River at Thebes, IL
• Ohio River near Grand Chain, IL
• Mississippi River above Old River Outflow Channel, LA
  
  

For additional information on this study, contact:

• Lori Sprague (lsprague@usgs.gov)
  
  

Related Links:

• Mississippi River Gulf of Mexico Watershed Nutrient Task Force
• Trends in Nutrient and Sediment Concentrations in Streams and Rivers of the United States, 1993-2003
• Nutrients in rivers, streams, and aquifers in the United States
• Annual and Spring Estimates of Nutrient Delivery to the Gulf of Mexico from the Mississippi River Basin
  

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U.S. Department of the Interior | U.S. Geological Survey
URL: http://water.usgs.gov/nawqa/pubs/nitrate_trends/index.html
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Page Last Modified: Tuesday, 04-Mar-2014 14:44:59 EST