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Learn about the deposition data and site characteristics of over 90 CASTNET sites.
CASTNET is a national monitoring network established to assess trends in pollutant concentrations, atmospheric deposition, and ecological effects due to changes in air pollutant emissions.
CASTNET site locations, including latitude, longitude, and elevation values, have been updated to reflect site data collected as part of the independent audit program. Learn about the audit program and read the audit reports. For the updated site locations, download the data.
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