Filters: Tags: spring flush (X) > partyWithName: Barbara J Mahler (X) > Types: Map Service (X)

Filters Date Range Past year (0) Past month (0) Past week (0) Past day (0) Custom range... To   Search Types OGC WFS Layer (1) OGC WMS Layer (1) OGC WMS Service (1) Contacts Public Information Officer, Oklahoma-Texas Water Science Center Thomas E Burley Oklahoma-Texas Water Science Center Keith A Loftin Michael T Meyer More... Tag Types Place (1) Theme (1) Harvest Set (1) USGS Scientific Topic Keyword (1) Tag Schemes Oregon GEO Place Keywords (1) none (1) View Results as: JSON ATOM CSV

Concentrations of glyphosate and atrazine compounds in 100 Midwest United States streams in 2013 Temporal patterns in glyphosate and atrazine concentrations were measured weekly by the U.S. Geological Survey (USGS) during the 2013 growing season in 100 small streams in the Midwestern United States. Concentrations also were measured every 2 days at a subset of 8 of the sites, all located in Missouri. Glyphosate was detected more frequently in urban streams than in agricultural streams, and at concentrations similar to those in streams with high agricultural land use in the watershed. In contrast, atrazine was detected more frequently and at higher concentrations in agricultural streams than in urban streams. This data release provides watershed characteristics and 2013 glyphosate and atrazine compound concentrations... Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Corn Belt, ELISA, Illinois, Indiana, Iowa, All tags... Kansas, Kentucky, Minnesota, Missouri, Nebraska, Ohio, South Dakota, USGS Science Data Catalog (SDC), United States, Water Quality, Wisconsin, atrazine, glyphosate, herbicide, river, spring flush, stream, Fewer tags