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Glyphosate and aminomethylphosphonic acid (AMPA) in National Water Quality Network Streams and Rivers in the U.S., Water Years 2015-2017 The U.S. Geological Survey (USGS) National Water Quality Network - Rivers and Streams (NWQN) is comprised of 110 surface-water monitoring sites designed to track ambient water-quality conditions across the nation. Although numerous constituents, including pesticides, have been collected at many of these sites since 1991, glyphosate and its metabolite aminomethylphosphonic acid (AMPA) were not routinely measured in NWQN water samples prior to 2014. Because of the widespread use of glyphosate for agricultural and nonagricultural applications, in 2014, these two compounds were added to the NWQN. This dataset includes concentrations of glyphosate and AMPA from water samples collected from 2015 through 2017 at 70 NWQN... Tags: Environmental Health, National Water Quality Program, USGS Science Data Catalog (SDC), United States, Water Quality, All tags... agriculture, glyphosate, pesticides, river systems, water-quality, Fewer tags Agricultural Pesticide Use Estimates for Selected Watersheds of the Surface Water Trends Project, 1992-2014, National Water Quality Program The U.S. Geological Survey (USGS) National Water Quality Program (NWQP) provides an understanding of water-quality conditions; whether conditions are getting better or worse over time; and how natural features and human activities affect those conditions. The Surface Water Trends (SWT) project of NWQP evaluates the directions, periods, and statistical significance of trends in water quality in streams and rivers. This data release was generated for SWT and provides annual agricultural pesticide use (1992-2014) for selected watersheds where long-term water quality is measured and where subsequent trend analysis will be conducted. County-level pesticide use estimates for 33 compounds were allocated to agricultural... Tags: National Water Quality Program, USGS Science Data Catalog (SDC), United States, Water Quality, agriculture, All tags... pesticides, river systems, water-quality, Fewer tags Watershed Boundaries for the U.S. Geological Survey National Water Quality Network The National Water Quality Network (NWQN) for Rivers and Streams includes 113 surface-water river and stream sites monitored by the U.S. Geological Survey (USGS) National Water Quality Program (NWQP). The NWQN represents the consolidation of four historical national networks: the USGS National Water-Quality Assessment (NAWQA) Project, the USGS National Stream Quality Accounting Network (NASQAN), the National Monitoring Network (NMN), and the Hydrologic Benchmark Network (HBN). The NWQN includes 22 large river coastal sites, 41 large river inland sites, 30 wadeable stream reference sites, 10 wadeable stream urban sites, and 10 wadeable stream agricultural sites. In addition to the 113 NWQN sites, 3 large inland river... Tags: USGS Science Data Catalog (SDC), United States, Water Resources, hydrologic maps, hydrology, All tags... water-quality, watersheds, Fewer tags Agricultural Pesticide Use Estimates for the USGS National Water Quality Network, 1992-2014: Version 2 The National Water Quality Network (NWQN) for Rivers and Streams includes 113 surface-water river and stream sites monitored by the U.S. Geological Survey (USGS) National Water Quality Program (NWQP). The NWQN represents the consolidation of four historical national networks: the USGS National Water-Quality Assessment (NAWQA) Project, the USGS National Stream Quality Accounting Network (NASQAN), the National Monitoring Network (NMN), and the Hydrologic Benchmark Network (HBN). The NWQN includes 22 large river coastal sites, 41 large river inland sites, 30 wadeable stream reference sites, 10 wadeable stream urban sites, and 10 wadeable stream agricultural sites. In addition to the 113 NWQN sites, 3 large inland river... Categories: Data; Tags: National Water Quality Program, USGS Science Data Catalog (SDC), United States, Water Quality, agriculture, All tags... pesticides, river systems, water-quality, Fewer tags Agricultural Pesticide Use Estimates for the USGS National Water Quality Network, 1992-2014 IMPORTANT NOTE: On February 6, 2016, it was discovered that duplicate pesticide use values were inadvertently included for site 07144100 "Little Arkansas River near Sedgwick, KS". In addition, users of the data requested that pesticide use estimates for glyphosate and glufosinate be included in the data release. The duplicate records were deleted and estimates for the two compounds were made in Version 2 of this data release. Two compound names, "cis-Permethrin" and "Paraoxon-ethyl", which were labelled incorrectly in this version, were changed to "Permethrin" and "Parathion" respectively in Version 2. The total count of pesticide compounds, including glyphosate and glufosinate, for which use is estimated is 116.... Categories: Data; Tags: USGS Science Data Catalog (SDC), United States, Water Quality, agriculture, pesticides, All tags... river systems, water-quality, Fewer tags