Skip to Main Content View Text-Only

Planning and Sustainability

Innovation. Collaboration. Practical Solutions.

Phone: 503-823-7700

Fax: 503-823-7800

1900 SW 4th Ave, Suite 7100, Portland, OR 97201

More Contact Info

Middle Columbia Corridor Inventory

The Middle Columbia Corridor / Airport Natural Resources Inventory is intended to update 20–year old inventory information for lands in the vicinity of the Portland International Airport (PDX). The draft report includes a description of the methodology, overview of the area, and inventory site descriptions including natural resource descriptions, ranks of relative resource value, and maps.

Site CS2 - Portland Airport

Portland International Airport site description

Site CS1 - Buffalo Slough Site

Buffalo Slough/Peninsula Canal site description

Site CS4 - Middle Slough/Whitaker Slough

Middle Slough/Whitaker Slough inventory site description

Site CS5 - Airport Way

Airport Way inventory site description

Site CS6 - Little Four Corners

Little Four Corners inventory site description

Main Report and References

Main body of the report (excluding site descriptions, references, and appendices)

Site CS3 - Central Columbia River

Central Columbia River inventory site description

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.