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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
9/9/20 69.1 1
9/2/20 70.2 20
8/26/20 72.1 5
8/19/20 72.3 53
8/12/20 72.5 10
8/5/20 76.1 16
7/29/20 74.5 27
7/23/20 74.1 25
7/15/20 70.3 16
7/8/20 67.1 16
7/1/20 68.0 17
6/24/20 66.0 33
6/17/20 59.5 58
6/10/20 61.7 16
6/3/20 64.0 46
5/27/20 58.3 5
5/21/20 57.2 33
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