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Environmental Services

working for clean rivers

Phone: 503-823-7740

Fax: 503-823-6995

1120 SW 5th Avenue, Room 1000, Portland, OR 97204

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9. 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
9/27/17 61.3 16
9/20/17 65.7 21
9/13/17 70.2 34
9/6/17 71.8 62
8/30/17 70.9 6
8/23/17 70.3 10
8/16/17 74.8 7
8/8/17 77.4 16
8/2/17 74.3 5
7/26/17 73.8 5
7/19/17 73.9 6
7/12/17 73.4 1
7/5/17 71.4 6
6/28/17 68.9 1
6/21/17 62.8 8
6/14/17 60.6 10
6/7/17 63.9 1
5/31/17 62.4 5
5/24/17 59.7 6
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