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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

Fish Studies

Seasonal Composition and Distribution of Fish Species In the Lower Columbia Slough (2009)

ODFW Project Period: 1 March 2008 to 28 February 2009, Fish Assemblages of the Lower Columbia Slough

Tryon Creek Restoration Monitoring Project 2007 Report

FY 2005-2007 Annual Report (USFWS)

Abundance and Distribution of Fish Species In Portland Streams (2009)

ODFW Completion Report 2009, Fish Distribution in the City of Portland

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.