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Environmental Services

working for clean rivers

Phone: 503-823-7740

Fax: 503-823-6995

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

More Contact Info

Table of Contents
The descriptions below provide general information for each subject. Click on each subject to get subwatershed specific descriptions.

Habitat and Biological Communities


Land Use and Population

Landscape and Hydrology


Water Quality
Maps & Files

Questions & Comments
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