Crop from aerial photograph M_4611938_NW_11_1_20090626_20090915 showing the locations of <a href="https://en.wikipedia.org/wiki/Columbia_Generating_Station" class="extiw" title="w:Columbia Generating Station">WNP-2</a> (on the left), <a href="https://en.wikipedia.org/wiki/WNP-1_and_-4" class="extiw" title="w:WNP-1 and -4">WNP-1</a> (on the bottom right) and <a href="https://en.wikipedia.org/wiki/WNP-1_and_-4" class="extiw" title="w:WNP-1 and -4">WNP-4</a> (on the top right).
<a rel="nofollow" class="external text" href="https://lta.cr.usgs.gov/sites/default/files/Data%20Citation_1.pdf">Data available from the U.S. Geological Survey</a> through <a rel="nofollow" class="external text" href="https://earthexplorer.usgs.gov">Earth Explorer</a>.
United States Geological Survey
<a rel="nofollow" class="external text" href="https://lta.cr.usgs.gov/node/300">USGS NAIP JPEG2000</a> data