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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

More Contact Info


6. Morrison Bridge - River Mile 12.7
Sample Collection Date Temperature
degrees Fahrenheit
E. Coli Count
organisms per 100ml
11/5/14 54.0 40
10/2/14 38.1 12
9/2/14 71.4 13
8/13/14 73.9 5
7/9/14 72.5 8
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