Heavy rain triggers sewer overflow into Willamette River

A Combined Sewer Overflow occurs when Portland's Big Pipe system reaches 100% capacity, causing the excess storm and sewer water to spill into the Willamette River.

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,Portland Bureau Of Environmental Services ,Heavy Monday ,Sewer Overflows ,Big Pipe ,Willamette River ,Portland Bureau ,Environmental Services ,Combined Sewer Overflow ,Big Pipe Tracker ,Columbia River ,North Portland ,