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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


5. Portland Boathouse Dock - River Mile 12.9

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 49
9/11/19 69.1 11
9/4/19 72.9 6
8/28/19 71.1 12
8/21/19 71.8 34
8/13/19 73.6 15
8/7/19 74.7 14
7/31/19 73.8 23
7/24/19 72.9 2
7/17/19 72.0 12
7/10/19 69.1 25
7/3/19 68.4 15
6/26/19 68.0 1
6/19/19 70.2 2
6/12/19 65.7 4
6/5/19 66.0 12
5/29/19 59.2 4
5/22/19 59.5 6
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