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Environmental Services

working for clean rivers

Phone: 503-823-7740

Fax: 503-823-6995

1120 SW 5th Avenue, Suite 1000, Portland, OR 97204

Containment Species

The city and its partners are mapping these species and managing them in limited circumstances.


Purple Loosestrife

Lythrum salicaria

Knapweeds

Centaurea diffusa and C. maculosum

Spurge Laurel

Daphne laureola

Knotweed

Polygonum cuspidatum, P. polystachyum, P. sachalinense

Heartbleed Security Notice

A serious security vulnerability known as "Heartbleed" was recently discovered in OpenSSL, a popular software library commonly used by many websites on the internet to encrypt communication between a user's computer and a web server.

PortlandOregon.gov is NOT affected by this vulnerability as it does not use the OpenSSL software library. Please rest assured we are dedicated to protecting your security on this website.