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The City of Portland, Oregon

Environmental Services

working for clean rivers

Phone: 503-823-7740

Fax: 503-823-6995

1120 SW 5th Ave, Suite 613, Portland, OR 97204

More Contact Info


8. Cathedral Park Boat Launch - River Mile 5.6

Samples from this location tested weekly from May to October

Sample Collection Date Temperature
degrees Fahrenheit
E. Coli Count
organisms per 100ml
9/21/21 66.0 14
9/15/21 68.9 5
9/8/21 70.0 4
9/1/21 70.2 11
8/25/21 74.8 11
8/18/21 76.1 2
8/11/21 76.8 4
8/4/21 76.6 21
7/28/21 75.6 5
7/21/21 75.0 8
7/14/21 75.7 4
7/7/21 75.7 1
6/30/21 76.8 3
6/23/21 71.8 9
6/16/21 66.6 12
6/9/21 69.3 12
6/2/21 65.3 2
5/26/21 63.1 72
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