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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
9/21/21 65.1 30
9/15/21 68.4 18
9/8/21 69.6 30
9/1/21 68.9 5
8/25/21 72.1 3
8/18/21 75.9 14
8/11/21 75.0 26
8/4/21 77.4 5
7/28/21 76.1 18
7/21/21 75.7 12
7/14/21 75.6 10
7/7/21 74.1 84
6/30/21 76.5 35
6/23/21 72.7 77
6/16/21 65.7 16
6/9/21 68.5 8
6/2/21 67.3 22
5/26/21 61.0 170
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