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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


3. Willamette Park Boat Launch - River Mile 15.7

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 64.2 44
9/21/22 65.1 6
9/14/22 66.0 6
9/7/22 71.2 11
8/31/22 73.2 17
8/24/22 74.3 37
8/17/22 73.8 12
8/10/22 74.5 26
8/3/22 77.5 11
7/27/22 75.4 49
7/20/22 72.1 5
7/13/22 70.5 8
7/6/22 66.0 20
6/29/22 66.9 8
6/22/22 59.5 91
6/15/22 53.6 170
6/8/22 58.6 44
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