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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
9/18/19 64.9 46
9/11/19 68.9 20
9/4/19 72.7 9
8/28/19 71.8 28
8/21/19 72.0 10
8/13/19 73.8 18
8/7/19 74.7 6
7/31/19 73.9 11
7/24/19 73.8 4
7/17/19 71.8 15
7/10/19 69.3 4
7/3/19 68.4 10
6/26/19 69.4 2
6/19/19 70.0 ND
6/12/19 64.9 8
6/5/19 66.0 6
5/29/19 58.6 10
5/22/19 59.7 11
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