Map of Streams Tested for Pesticides in 11 Midwestern States

Map of Streams Tested for Pesticides in 11 Midwestern States

Detailed Description

At least one pesticide in more than half of the 100 streams sampled in the Midwest exceeded a toxicity threshold predicted to cause harm to aquatic insects and other stream organisms, ranging from acute effects (mortality after short-term exposure) in 12 streams to chronic effects (longer term impairments to reproduction and development) in 41 streams.

Details

Image Dimensions: 1702 x 1070