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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
9/18/19 65.5 86
9/11/19 70.9 78
9/4/19 72.7 16
8/28/19 73.2 10
8/21/19 71.8 18
8/13/19 73.9 22
8/7/19 74.7 14
7/31/19 74.3 56
7/24/19 73.2 8
7/17/19 71.8 16
7/10/19 69.8 19
7/3/19 68.9 44
6/26/19 68.5 28
6/19/19 70.3 7
6/12/19 66.4 6
6/5/19 65.3 5
5/29/19 60.1 7
5/22/19 61.5 14
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