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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
9/9/20 69.4 5
9/2/20 72.7 12
8/26/20 73.2 4
8/19/20 72.9 140
8/12/20 72.9 4
8/5/20 76.6 50
7/29/20 75.0 19
7/23/20 73.9 15
7/15/20 70.3 20
7/8/20 67.8 12
7/1/20 68.5 13
6/24/20 66.0 30
6/17/20 60.8 50
6/10/20 62.8 37
6/3/20 64.8 23
5/27/20 58.6 16
5/21/20 57.4 62
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