Duwamish River

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Duwamish River flows into the sea: 880 km flows in at N 47° 30′ 44″, W 122° 18′ 2″ at OSM node n287228003.

Duwamish River has 2 tributaries.

• Green River, which joins it at N 47° 28′ 26″, W 122° 15′ 7″ at OSM node n287195644, and 845 km of total upstream flows in.
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• Black River, which joins it at N 47° 28′ 26″, W 122° 15′ 7″ at OSM node n287195644, and 25 km of total upstream flows in.
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