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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

More Contact Info


2. Sellwood Riverfront Park Dock - River Mile 16.4

Samples from this location tested weekly from May to October

Sample Collection Date Temperature
degrees Fahrenheit
E. Coli Count
organisms per 100ml
9/27/23 62.8 61
9/20/23 67.6 6
9/13/23 67.5 58
9/6/23 67.1 10
8/30/23 69.8 13
8/23/23 74.7 3
8/16/23 76.6 100
8/9/23 75.2 6
8/2/23 74.5 12
7/26/23 75.2 17
7/19/23 74.5 23
7/12/23 73.9 8
7/5/23 73.4 14
6/28/23 69.4 7
6/21/23 64.9 17
6/14/23 66.9 16
6/7/23 64.9 8
5/31/23 64.0 10
An E. coli count less than 406 is below the health standard set by the Oregon Department of Environmental Quality. A value of 'ND' indicates a non-detection.
↓ below state health standard - ↑ above state health standard