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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. 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.