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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


5. Portland Boathouse Dock - River Mile 12.9

Samples from this location tested weekly from May to October

Sample Collection Date Temperature
degrees Fahrenheit
E. Coli Count
organisms per 100ml
9/21/21 64.6 46
9/15/21 68.9 20
9/8/21 69.6 6
9/1/21 68.7 4
8/25/21 72.9 6
8/18/21 75.7 3
8/11/21 75.2 10
8/4/21 76.5 7
7/28/21 75.4 6
7/21/21 75.2 7
7/14/21 75.7 7
7/7/21 75.2 6
6/30/21 76.6 5
6/23/21 72.5 31
6/16/21 66.0 5
6/9/21 68.5 12
6/2/21 65.7 10
5/26/21 60.1 55
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