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The City of Portland, Oregon

Environmental Services

working for clean rivers

Phone: 503-823-7740

Fax: 503-823-6995

MAILING ADDRESS: 1120 SW 5th Ave, Room 1000, Portland, OR 97204

More Contact Info

Current Characterization

Columbia Slough Watershed Water Quality Report 2003

Water quality technical report and appendices (PDF, 5,633kb)