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To improve security, on Feb. 11th the city will begin disabling TLS 1.0 on our websites. This change should not impact you unless you are using an old browser. More information


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


Bats of Oregon

ODFW's handout about bats of Oregon

Beaver, Muskrat and Nutria Identification

The difference between beavers, muskrats and nutria

Beaver Guidance

October 2010 draft