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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


4. Riverplace Marina Boat Dock - River Mile 13.2

Samples from this location tested weekly from May to October

Sample Collection Date Temperature
degrees Fahrenheit
E. Coli Count
organisms per 100ml
9/26/18 62.2 9
9/19/18 64.6 10
9/12/18 68.0 15
9/5/18 68.4 3
8/29/18 70.9 5
8/22/18 73.2 6
8/15/18 74.7 11
8/8/18 77.4 43
8/1/18 76.3 3
7/24/18 75.9 10
7/18/18 73.9 5
7/11/18 70.7 17
7/3/18 70.3 8
6/27/18 70.7 5
6/20/18 66.0 8
6/13/18 63.0 10
6/6/18 63.9 1
5/30/18 62.2 5
5/23/18 63.0 8
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