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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
9/27/17 61.3 14
9/20/17 63.1 180
9/13/17 68.9 8
9/6/17 70.0 160
8/30/17 69.3 20
8/23/17 69.3 26
8/16/17 72.5 10
8/8/17 77.5 48
8/2/17 74.8 14
7/26/17 73.2 12
7/19/17 72.3 35
7/12/17 74.5 11
7/5/17 71.8 28
6/28/17 69.3 5
6/21/17 63.7 7
6/14/17 58.1 7
6/7/17 62.2 17
5/31/17 62.4 4
5/24/17 60.3 21
An E. coli count less than 406 is below the health standard set by the Oregon Department of Environmental Quality
↓ below state health standard - ↑ above state health standard