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Pesticide Investigations

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Midwestern stream following a recent rain event where samples were collected for the analysis of neonicotinoid insecticides. USGS scientists detected pulses of elevated neonicotinoid insecticide concentrations, that were associated with rainfall events during and shortly after crop planting. Photo: Dana Kolpin, USGS.

Midwestern stream following a recent rain event.
Midwestern stream following a recent rain event where samples were collected for the analysis of neonicotinoid insecticides. Three neonicotinoid insecticides were detected commonly in water samples collected from nine Midwestern stream sites during the 2013 growing season. Photo: Dana Kolpin, USGS.

USGS scientist collecting a water-quality from a stream.
USGS scientist collecting water samples from a stream in Iowa following a recent rain event for the analysis of neonicotinoid insecticides. Photo credit: Laura Hubbard, USGS.

Midwestern soybean field after a rain event
Soybean field adjacent to a midwestern stream following a recent rain event. USGS scientists collected water quality samples from nearby streams for analysis of neonicotinoids insecticides. Photo: Dana Kolpin, USGS.

USGS Scientist at a computer used to control laboratory analytical equipment.
USGS scientists used advanced analytical equipment to investigate the composition of POEA (polyoxyethylene tallow amine). Photo credit: Daniel Tush, USGS.

USGS Scientist dissecting a summer flounder.
USGS scientist dissecting a summer flounder as part of a study on the fate of pesticides in an estuary near Guadalupe, California. Photo credit: James Orlando, USGS.

A view of a farm fields in Iowa.
USGS scientists have found glyphosate, which is frequently applied to corn and soybeans growing areas like these in Iowa, to be widespread in the environment. Photo Credit: William A. Battaglin, USGS.

Graph of detection frequencies for glyphosate and AMPA by hydrologic setting.
Graph of detection frequencies for glyphosate and its degration product AMPA (aminomethylphosphonic acid) by hydrologic setting. The common weed killer glyphosate is widespread in the environment.

A Pacific Chorus frog in meadow located in Yosemite National Park.
USGS scientists found pesticides in amphibians such as this Pacific Chorus frog. The fog was found in meadow located in Yosemite National Park. Photo credit: Devin Edmonds, USGS.

USGS scientist collecting water samples from a pond.
USGS scientist collecting water samples from an amphibian monitoring site in Livermore, California. USGS scientists found pesticides in frogs from remote areas in California. Photo credit: James Orlando, USGS.

USGS scientists installing passive sediment samplers in an irrigation ditch.
USGS scientists installing passive sediment samplers in an irrigation ditch near Hancock, Wisconsin. The samplers are designed to collect suspended sediment from streams over a 3-week period, and were used during a study of the occurrence of fungicides in streams and groundwater. Photo credit: Timothy Reilly, USGS.

Mill Creek in Salt Lake City Utah
Contamination and toxicity in streambed sediments caused by pyrethroid insecticides generally increased with the degree of urbanization in this stream (Mill Creek in Salt Lake City, Utah) and six other metropolitan areas across the Nation. Photo credit: Alan Cressler, USGS.

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Page Last Modified: Thursday, 24-Jul-2014 16:27:54 EDT