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Both Portland and Troutdale recorded record rainfalls for Saturday, Aug. 10

KOIN6 NEWS - A combined sewer overflow into the Willamette River.About 60,000 gallons of combined sewage overflowed into the Willamette River in Portland in a 23-minute period Saturday afternoon, the Portland Bureau of Environmental Services said.

The overflow was caused by heavy rains that fell in the area and came from a single outfall at Northwest 110th and Front Avenue, officials said. It began at 4:46 p.m. and ended at 5:09 p.m.

People should avoid contact with the Willamette River in the area of Linnton and the Port of Portland Terminal 4 and downstream until late Monday.

This is the first combined sewer overflow of 2019, authorities said in a release, and was made up of 80% stormwater and 20% sewage. Before the Big Pipe project of 2011, there were on average about 50 outfalls a year.

Both Portland and Troutdale recorded record rainfall amounts for August 10. In Portland, 0.79 inches of rain was recorded, more than doubling the 1957 record of 0.36 inches.

In Troutdale, a record that stood for 54 years — 0.30 inches — was topped when 0.36 inches was recorded. A final report from the National Weather Service will be released on Sunday.

KOIN 6 News is a news partner of the Portland Tribune. You can find their story here.


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