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Planning and Sustainability

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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 CS1 - Buffalo Slough Site

Buffalo Slough/Peninsula Canal site description

Site CS3 - Central Columbia River

Central Columbia River inventory site description

Site CS4 - Middle Slough/Whitaker Slough

Middle Slough/Whitaker Slough inventory site description

Site CS2 - Portland Airport

Portland International Airport site description

Main Report and References

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

Site CS5 - Airport Way

Airport Way inventory site description

Site CS6 - Little Four Corners

Little Four Corners inventory site description