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Official Website

of the Commonwealth of Pennsylvania

    The .gov means its official.

    Local, state, and federal government websites often end in .gov. Commonwealth of Pennsylvania government websites and email systems use "pennsylvania.gov" or "pa.gov" at the end of the address. Before sharing sensitive or personal information, make sure you're on an official state website. 

    The maps below show the monitoring sites located in Pennsylvania. You can also see a map of site locations by major watershed below

    Pennsylvania Atmospheric Deposition Sites by Major Watershed

    Pennsylvania Atmospheric Deposition Sites by Major Watershed

    Acid Rain Sites

    Click the map to view the National Atmospheric Deposition Program pages where all the information is gathered. You will be taken to a map where you can zoom in on Pennsylvania and click on individual locations for the data collected there. Once the site is selected, look for "Data Access: Click Here"

    Mercury Sites

    Click the map to view the National Atmospheric Deposition Program pages where all the information is gathered. You will be taken to a map where you can zoom in on Pennsylvania and click on individual locations for the data collected there. Once the site is selected, look for "Data Access: Click Here".