State closes I-5 southbound at Rose Quarter for 5 weeks starting Sept. 11

Plan for major delays. More at i5rosequarter.org. Visit Shift Your Trip to keep Portland moving.

Portland is a Sanctuary City

Learn more.

News and notices

Displaying 1 - 9 of 9 related news.

CSO Advisory: Heavy rain leads to combined sewer overflow to the Willamette River

Environmental Services
News article
Updated
A combined sewer overflow (CSO) advisory has been issued for the Willamette River.

CSO Advisory: Heavy rain leads to combined sewer overflow to the Willamette River

Environmental Services
News article
Updated
A combined sewer overflow (CSO) advisory has been issued for the Willamette River.

CSO Advisory: Atmospheric river leads to combined sewer overflow to the Willamette River

Environmental Services
News article
Updated
A combined sewer overflow (CSO) advisory has been issued for the Willamette River.

CSO Advisory: Atmospheric river leads to combined sewer overflow to the Willamette River

Environmental Services
Press release
Updated
Heavy rains over the weekend led the Big Pipe system to reach capacity around 2:30 p.m. on Sunday, February 23, leading to a combination of stormwater and sewage overflowing to the Willamette River from multiple outfalls.

One Year Without a Combined Sewer Overflow: A Milestone for the Big Pipe Project

Environmental Services
Press release
Today marks a significant milestone for Environmental Services' Big Pipe Project: one full year without a combined sewer overflow (CSO) to the Willamette River.

Willamette River summer water quality testing wraps up with 100% good results; public can monitor the river during the rainy season via online tracker

Environmental Services
Press release

Rainy season on the Willamette: Big Pipe Tracker shows in real-time how river stays sewage-free

Environmental Services
News article
As the rainy season begins (finally!), check the Big Pipe Tracker to find out how full the Big Pipe system is as it protects the Willamette River from combined sewer overflows.

Summer on the Willamette River – weekly water quality testing begins for 10th season

Environmental Services
Press release
Want to swim, boat, play in the Willamette River? Water quality is good for recreation. A decade of data show low bacteria levels in the Willamette River - well within DEQ guidelines for water recreation. Find out weekly test results all summer long.

Big Pipe reaches 10-year milestone; new online tracker lets public see in real-time how Willamette River stays sewage-free

Environmental Services
Press release
A decade of data show how Portlanders’ investment in the Big Pipe system is working to send sewage and stormwater to the City’s treatment plant and make overflows rare. The new Big Pipe Tracker lets the public see the system in action.

See something we could improve on this page? Give website feedback.

Back to top