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The City of Portland, Oregon

Environmental Services

working for clean rivers

Phone: 503-823-7740

Fax: 503-823-6995

MAILING ADDRESS: 1120 SW 5th Ave, Room 1000, 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
9/18/19 65.1 240
9/11/19 68.7 66
9/4/19 73.9 45
8/28/19 71.6 46
8/21/19 72.1 14
8/13/19 73.2 13
8/7/19 74.5 21
7/31/19 73.8 91
7/24/19 73.6 2
7/17/19 72.3 46
7/10/19 69.3 20
7/3/19 68.5 33
6/26/19 68.9 2
6/19/19 70.2 14
6/12/19 64.6 20
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