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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. Railroad Bridge - River Mile 6.8

Samples from this location tested monthly

Sample Collection Date Temperature
degrees Fahrenheit
E. Coli Count
organisms per 100ml
4/12/18 33.1 180
3/15/18 48.2 17
2/1/18 46.4 100
1/18/18 46.2 33
12/6/17 45.7 71
11/14/17 49.8 56
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