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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
6/2/15 66.9 11
5/6/15 61.0 8
4/22/15 57.0 2
3/3/15 48.0 8
2/10/15 49.5 2000
1/15/15 45.0 71
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