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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
9/28/22 63.9 12
9/21/22 65.3 4
9/14/22 67.1 21
9/7/22 71.4 5
8/31/22 73.2 10
8/24/22 74.3 12
8/17/22 73.8 4
8/10/22 75.2 17
8/3/22 78.6 10
7/27/22 77.2 20
7/20/22 72.3 3
7/13/22 70.2 13
7/6/22 66.2 4
6/29/22 66.9 3
6/22/22 58.8 23
6/15/22 53.6 190
6/8/22 58.5 47
6/1/22 57.0 46
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