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The City of Portland, Oregon

Environmental Services

working for clean rivers

Phone: 503-823-7740

Fax: 503-823-6995

1120 SW 5th Ave, Suite 613, Portland, OR 97204

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Bringing Buried Streams Back to Life

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Creek in PortlandThere was a great story on NPR this morning about Cincinnati and other cities' efforts to "daylight" urban streams

Many cities, including Portland, are built on top of what used to be surface streams that flowed freely to the rivers.  The streams were filled in or piped underground to allow development.  Daylighting is when streams that have been piped underground in the past are restored to a more natural condition.  This helps improve water quality, habitat, and can keep water out of sewage treatment plants. 


Check out this post about the project to daylight Spring Garden Stream in southwest Portland.  Another good local example is the daylighting of the headwaters of Tryon Creek

Interested in more information? A good resource is this recent American Rivers' report on daylighting streams.

1 Comment


Bonnie Henderson-Winnie

November 10, 2018 at 12:50 PM

Hi there!

Does a map or other information exist in print or online that shows where all the streams currently underground in Portland flow? I am very interested in finding out more about the location of these hidden streams.


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