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Pesticides in the Hudson River Basin, 1994-96

Northeastern Geology and Environmental Sciences

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Abstract

The occurrence, distribution, and temporal patterns of pesticide concentrations were studied in the Hudson River Basin during 1994 - 96. This article presents the results of three separate pesticide studies conducted as part of the U.S. Geological Survey (USGS) National Water Quality Assessment (NAWQA) program. Pesticides were found in all three studies, but rarely at concentrations exceeding any U.S. Environmental Protection Agency drinking-water standards. The highest concentrations were detected during and immediately after the first runoff following pesticide applications in the late spring and early summer. The herbicides atrazine and metolachlor were the most commonly detected pesticides and were present in nearly every sample collected from streams draining agricultural areas; they also were detected in many streams draining areas with other land uses. Herbicides were most often detected, and had the highest concentrations, in samples from streams draining agricultural areas, whereas insecticides such as diazinon were most commonly detected, and had the highest concentrations, in samples from streams draining urban areas.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Pesticides in the Hudson River Basin, 1994-96
Series title:
Northeastern Geology and Environmental Sciences
Volume
20
Issue:
4
Year Published:
1998
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Northeastern Geology and Environmental Sciences
First page:
299
Last page:
307
Number of Pages:
9