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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.
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CULVERTS (NUMBER OF)
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LENGTH OF CULVERTS (FT)
|
PIPE AGE CLASS
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PIPE AGE LENGTH (FT)
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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 |
|
|