Duwamish River upstream end (OSM) to Duwamish River downstream end (OSM)
● Duwamish River upstream end (OSM)
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● Duwamish River downstream end (OSM)
Duwamish River
WA • US
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The Duwamish River runs north for about 12 miles (19 km) through the cities of Tukwila and Seattle in the American state of Washington before emptying into Elliott Bay on the Puget Sound. Historically, the river formed from the confluence of the White and Black River in what is now Renton, but human modifications in the early 20th century led it to become the lower portion of the Green River. During the Last Glacial Period, the Duwamish Valley was carved out by glacial meltwater from the advancing Cordilleran ice sheet, forming what was initially an inlet of Puget Sound, which was later fil...
11.8 mi total
1 sections
3 access points
0 camps
0 rapids
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Click any point for details. Sections without stored geometry are drawn as straight put-in → take-out lines — actual courses follow the river.