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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

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Stormwater Conveyance

Outside of the combined sewer system, stormwater conveyance in this subwatershed consists primarily of roadside ditches in the area generally west of the Oregon Zoo and a few segments of open stream channel along the edges of the canyon occupied by Highway 26. A project to separate storm flows in the Tanner basin, as well as some flows from along West Burnside, is currently underway as part of the CSO Program.

CULVERTS (NUMBER OF) LENGTH OF CULVERTS (FT) PIPE AGE CLASS PIPE AGE LENGTH (FT) PIPE DIAMETER CLASS
PIPE LENGTH (FT)   
82.0 5377.0 1867-1899 4692.0 1" - 12" 15157.0
1900-1945 7613.0 13" - 24" 14725.0
1946-2001 16128.0 > 25" 8853.0
No Data 62734.0 No Data 52738.0
82 5377   91167   91473
Maps & Files

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