This photograph of the lower Duwamish, in the Port of Seattle, was taken in January 2014.

The Duwamish River, in south Seattle, is a U.S. federal Superfund cleanup site and one of the most developed industrial landscapes in the Pacific Northwest. The area is dotted with cargo container barges, cement factories, shipping and receiving warehouses, and other industrial facilities. Believe it or not, fish swim up this river to spawn, and people fish on this waterway every summer.