USGS Water Resources

Water Resources of Idaho


Probability of Detecting Atrazine/Desethyl-Atrazine
and Elevated Concentrations of Nitrite Plus Nitrate as
Nitrogen in Ground Water in the Idaho Part of the
Western Snake River Plain
By Mary M. Donato

Water-Resources Investigations Report 00-4163

Study Area Map

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As ground water continues to provide an ever-growing proportion of Idaho's drinking water, concerns about the quality of that resource are increasing. Pesticides and nitrite plus nitrate as nitrogen have been detected in many aquifers in the State. To provide a sound hydrogeologic basis for atrazine and nitrate management in southern Idaho, the U.S. Geological Survey produced maps showing the probability of detecting these contaminants in ground water in the upper Snake River Basin (published in a 1998 report) and the western Snake River Plain (published in this report).

For copies of this report, you can obtain ordering information from the U.S. Geological Survey, Information Services, Box 25286, Denver Federal Center, Denver, CO 80225 (1-888-275-8747), or send email to infoservices@usgs.gov

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