6. Morrison Bridge - River Mile 12.7

Samples from this location tested monthly

Sample Collection Date Temperature
degrees Fahrenheit
E. Coli Count
organisms per 100ml
4/2/25 48.2 79
3/5/25 48.2 10
2/24/25 46.2 120
2/5/25 42.4 18
1/8/25 46.8 40
12/4/24 43.0 64
11/5/24 51.8 46

↓ below state health standard   ↑ above state health standard

An E. coli count less than 406 is below the health standard set by the Oregon Department of Environmental Quality. A value of 'ND' indicates a non-detection.