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Environmental Services

working for clean rivers

Phone: 503-823-7740

Fax: 503-823-6995

1120 SW 5th Avenue, Suite 1000, Portland, OR 97204

Willamette River Recreation Index

Playing at the Big Float 2013Planning Some River Recreation?

In November 2011, Environmental Services completed a 20-year program to control combined sewer overflows (CSOs) and today the Willamette River is cleaner than it's been in decades.

Environmental Services collects water samples monthly at three locations on the Willamette River to track long-term water quality trends.

From May to October, bureau staff also collect weekly samples at five river recreational areas to track E. coli bacteria and temperature at public access points.

Get the latest bacteria and temperature test results.


Morrison Bridge Monitoring Station

View data from the U.S. Geological Survey's Willamette River monitoring station at the Morrison Bridge

Register now for the Big Float 4

Coming Sunday, July 27, 2014

Test Results

Results from eight sampling locations

E. Coli Information

Sampling and analysis

Willamette River Sampling

Monitoring river health in Portland

Questions and Answers

More information about Willamette River water quality in Portland