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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
9/26/18 62.2 8
9/19/18 63.1 10
9/12/18 68.0 7
9/5/18 68.7 10
8/29/18 69.6 8
8/22/18 72.5 22
8/15/18 74.3 9
8/8/18 75.7 56
8/1/18 76.6 12
7/24/18 75.4 93
7/18/18 74.3 25
7/11/18 70.0 39
7/3/18 70.0 8
6/27/18 70.3 8
6/20/18 65.3 460
6/13/18 62.4 14
6/6/18 63.5 3
5/30/18 61.3 12
5/23/18 62.1 15
An E. coli count less than 406 is below the health standard set by the Oregon Department of Environmental Quality
↓ below state health standard - ↑ above state health standard