Evaluation of Stormwater and CSO Impact on Portland's Columbia Slough

by Claudia L. Zahorcak, Brown and Caldwell Consultants, Dallas, United States,
John C. Detweiler, Brown and Caldwell Consultants, Dallas, United States,

Document Type: Proceeding Paper

Part of: Water Resources Planning and Management and Urban Water Resources


A team of consultants studied the impacts of stormwater and combined sewer overflows on an urban drainageway to determine if increased beneficial stream uses were attainable. Planning-level loading-generator models and a steady-state receiving stream model were used. We identified the principal causes of water quality problems during non-storm and storm conditions. Follow-on analytical efforts will be directed toward these identified problems.

Subject Headings: Stormwater management | Combined sewers | Drainage | Overflow | Urban areas | Rivers and streams | Water quality | Water pollution

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