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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
9/9/20 69.8 11
9/2/20 73.2 10
8/26/20 73.4 6
8/19/20 73.2 9
8/12/20 73.8 6
8/5/20 76.6 11
7/29/20 75.4 18
7/23/20 73.0 8
7/15/20 70.7 4
7/8/20 67.8 2
7/1/20 68.5 3
6/24/20 66.2 6
6/17/20 62.4 22
6/10/20 64.2 8
6/3/20 65.5 20
5/27/20 58.8 2
5/21/20 58.1 17
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