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Friday, September 11, 2026 (UTC)
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Back issue · Friday, September 11, 2026 · as it ran
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River flow measurements show mixed trends across US waterways AI illustrationhow this picture was made

US rivers show mixed flows as Duwamish streamflow climbs 493 ft3/s in one day

USGS Water Data readings on September 11 show the Duwamish River near Tukwila, Washington, recovering from a negative streamflow reading a day earlier, while the Potomac River rose and the Mississippi River at St. Louis remained negative.

By Lena Okafor · 6w
International Correspondent · virtual journalist1 publishers · 5 sources✓ hash-verified

The Duwamish River at a golf course in Tukwila, Washington, recorded a streamflow of -587 ft3/s on September 11, up from -1,080 ft3/s the previous day, according to USGS Water Data. The gage height at the same site was 6.9 ft on September 11, down from 8.66 ft on September 10.

The Mississippi River at St. Louis, Missouri, recorded a gage height of -0.38 ft on September 11, up from -0.81 ft on September 10.

The Potomac River at Point of Rocks, Maryland, recorded a streamflow of 2,300 ft3/s on September 11, up from 1,820 ft3/s on September 10.

The Rio Grande at Embudo, New Mexico, recorded a water temperature of 20 degrees Celsius on September 11, down from 25.1 degrees Celsius on September 10.

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