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National Water-Quality Assessment (NAWQA) Program

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NAWQA Intranet

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NAWQA Regional Synthesis by Major River Basins

Data Archive

MRB Trends Projects

MRB 1 -- Temporal Changes in Surface-Water Insecticide Concentrations after the Phaseout of Diazinon and Chlorpyrifos (Phillips and others, 2006) MRB 1 -- Nutrient Concentrations and Loads in the Northeastern United States, Status and Trends, 1975-2003 (Trench and others, 2011)

MRB1-3 -- Mercury Trends in Fish Tissue from Lakes and Streams in the United States, 1969-2005 (Chalmers and others)

MRB 4 -- Nutrient and Suspended-Sediment Trends in the Missouri River Basin (Sprague and others)

MRB5 -- Trends in Nutrient and Sediment Concentrations and Loads in Major River Basins of the South-Central United States, 1993-2004 (Rebich and Demcheck, 2007)

MRB 7 -- Nutrient and Suspended-Sediment Transport and Trends in the Columbia River and Puget Sound Basins, 1993-2003 (Wise and others)

IR-1: Trends in Pesticide Concentrations in Corn-Belt Streams, 1996-2006 MARB -- RF1 Nutrient SPARROW Model (Robertson, Saad, and Schwarz) MRB 2 -- ERF1 Nitrogen SPARROW Model (Hoos and others) MRB 3 -- RF1 Nutrient SPARROW Model (Robertson and Saad) MRB 4 -- Nutrient sources and transport in the Missouri River Basin (Brown, Sprague, and Dupree) MRB 7 -- Estimation of total nitrogen and total phosphorus in streams of the Middle Columbia River Basin using SPARROW models (Johnson, Black, and Wise)

MRB 7 -- Application of the SPARROW model to assess surface-water nutrient conditions and sources in the United States Pacific Northwest (Wise and Johnson)

MRB 7 -- Surface Water Nutrient Conditions and Sources in the United States Pacific Northwest (Wise and Johnson, 2011)

SWGW-2 -- Dissolved Solids in Basin-Fill Aquifers and Streams in the Southwestern United States (Anning and others, 2007)

 

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Contact Charlie Crawford, Surface Water Status and Trends Coordinator

URL: http:// water.usgs.gov /nawqa-only/rb/data_archive/index.html
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