Concentrations of glyphosate and atrazine compounds in 100 Midwest United States streams in 2013

Publication Date

2016-12-30

Start Date

2013-05-01

End Date

2013-09-01

Mahler, B.J., Van Metre, P.C., Burley, T.E., Loftin, K.A., Meyer, M.T., and Nowell, L.H., 2016, Concentrations of glyphosate and atrazine compounds in 100 Midwest United States streams in 2013: U.S. Geological Survey data release, https://dx.doi.org/10.5066/F7SN073J.

Type: Related Primary Publication

Glyphosate and atrazine are the most intensively used herbicides in the United States. Although there is abundant spatial and temporal information on atrazine occurrence at regional scales, there are far fewer data for glyphosate, and studies that compare the two herbicides are rare. This data set presents concentrations of glyphosate and atrazine measured 12 times over 14 weeks in 100 small Corn Belt streams during the 2013 growing season. Water samples were collected by the USGS as part of the NAWQA Midwestern Stream Quality Assessment (MSQA) and analyzed at the USGS National Water Quality Laboratory, the Texas Water Science Center, and the USGS Organic Geochemistry Research Laboratory. The purpose of data collection was to investigate temporal variability in concentrations of these two intensively used herbicides over the growing season, and to compare concentrations of glyphosate and atrazine relative to one another and in the context of land use.

ScienceBase WMS

• National Water-Quality Assessment Project
• USGS Data Release Products

Data source

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