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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


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
9/26/18 62.8 15
9/19/18 66.4 8
9/12/18 68.7 19
9/5/18 68.5 5
8/29/18 71.8 5
8/22/18 74.3 12
8/15/18 75.6 8
8/8/18 77.5 21
8/1/18 75.9 2
7/24/18 76.1 5
7/18/18 74.3 4
7/11/18 71.4 6
7/3/18 71.6 2
6/27/18 70.7 5
6/20/18 66.4 16
6/13/18 63.7 16
6/6/18 64.0 5
5/30/18 63.7 7
5/23/18 63.9 5
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