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    <div class="ref-description">
    <p>Data from NID was downloaded from <a href='http://nid.usace.army.mil'>http://nid.usace.army.mil</a>.
Subsequently, the raw data was checked for potential errors and cleaned.
The dams package provides a subset of NID fields and functionality (<code><a href='get_nid.html'>get_nid()</a></code>) to access the entire NID dataset.</p>
    </div>




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