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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


4. Riverplace Marina Boat Dock - River Mile 13.2

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 63.1 56
9/20/23 67.6 3
9/13/23 67.3 3
9/6/23 67.6 3
8/30/23 71.1 15
8/23/23 75.2 8
8/16/23 79.2 13
8/9/23 75.6 8
8/2/23 74.8 13
7/26/23 75.6 15
7/19/23 74.5 2
7/12/23 75.4 3
7/5/23 73.4 5
6/28/23 69.8 4
6/21/23 66.0 12
6/14/23 66.7 5
6/7/23 65.3 3
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