Level III ecoregions in the Pacific Northwest, as defined by the U.S. Environmental Protections Agency + <a href="https://en.wikipedia.org/wiki/Columbia_River" class="extiw" title="en:Columbia River">Columbia River</a>.
<ul><li><a href="//commons.wikimedia.org/wiki/File:Level_III_ecoregions,_Pacific_Northwest.png" title="File:Level III ecoregions, Pacific Northwest.png">Level_III_ecoregions,_Pacific_Northwest.png</a>: U.S. Environmental Protection Agency</li>
<li>derivative work: <a href="//commons.wikimedia.org/wiki/User:Bourrichon" title="User:Bourrichon">Bourrichon</a> (<a href="//commons.wikimedia.org/wiki/User_talk:Bourrichon" title="User talk:Bourrichon"><span class="signature-talk">talk</span></a>)</li></ul>
<ul><li><a href="//commons.wikimedia.org/wiki/File:Level_III_ecoregions,_Pacific_Northwest.png" title="File:Level III ecoregions, Pacific Northwest.png">Level_III_ecoregions,_Pacific_Northwest.png</a></li></ul>