Skip to Main Content View Text-Only

The City of Portland, Oregon

Environmental Services

working for clean rivers

Phone: 503-823-7740

Fax: 503-823-6995

1120 SW 5th Ave, Suite 613, Portland, OR 97204

More Contact Info


8. Cathedral Park Boat Launch - River Mile 5.6

Samples from this location tested weekly from May to October

Sample Collection Date Temperature
degrees Fahrenheit
E. Coli Count
organisms per 100ml
9/28/22 64.9 14
9/21/22 65.7 8
9/14/22 68.9 6
9/7/22 72.7 16
8/31/22 73.8 5
8/24/22 74.5 3
8/17/22 75.2 12
8/10/22 75.9 2
8/3/22 76.8 1
7/27/22 75.9 1
7/20/22 72.1 ND
7/13/22 70.2 3
7/6/22 68.0 6
6/29/22 66.4 11
6/22/22 58.5 24
6/15/22 54.0 170
6/8/22 59.0 30
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.
↓ below state health standard - ↑ above state health standard