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USGS 12113415 DUWAMISH R AT E MARGINAL WAY BR AT DUWAMISH, WA
Location.--Latitude 47°30'01.82", Longitude
122°17'17.31" referenced to North American Datum of 1983, in
Section 10, Township 23 North, Range 4 East, in King County, Hydrologic Unit 17110013, on
right bank at bridge, 6.8 mi upstream from mouth. Drainage
area is 483 mi2. Datum of
gage is NAVD88.