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The City of Portland, Oregon

Environmental Services

working for clean rivers

Phone: 503-823-7740

Fax: 503-823-6995

MAILING ADDRESS: 1120 SW 5th Ave, Room 1000, 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
9/18/19 65.1 49
9/11/19 68.7 110
9/4/19 72.3 20
8/28/19 70.9 6
8/21/19 72.3 13
8/13/19 73.0 11
8/7/19 74.7 9
7/31/19 73.4 10
7/24/19 73.0 6
7/17/19 72.0 47
7/10/19 69.3 6
7/3/19 67.8 8
6/26/19 67.1 20
6/19/19 70.0 46
6/12/19 63.9 10
6/5/19 65.8 16
5/29/19 57.9 16
5/22/19 59.4 17
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