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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
9/9/20 69.6 5
9/2/20 72.0 11
8/26/20 72.5 4
8/19/20 73.2 45
8/12/20 73.4 4
8/5/20 76.6 3
7/29/20 74.8 9
7/23/20 74.1 9
7/15/20 70.7 5
7/8/20 67.8 11
7/1/20 68.2 4
6/24/20 66.6 7
6/17/20 61.3 18
6/10/20 63.0 19
6/3/20 65.1 13
5/27/20 58.3 6
5/21/20 57.4 22
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