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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


6. Morrison Bridge - River Mile 12.7
Sample Collection Date Temperature
degrees Fahrenheit
E. Coli Count
organisms per 100ml
6/3/14 62.2 5
5/7/14 55.4 19
4/9/14 52.2 16
3/12/14 48.0 84
2/25/14 45.0 31
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