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Watershed Services
Portland's Watersheds
Willamette Watershed
Willamette Watershed Characterization Report
Willamette Subwatersheds
Conditions unique to each of the 27 Willamette subwatersheds
Table of Contents
Balch
Beech-Essex-Wheeler
California
Carolina-Terwilliger
Doane
Fiske
Holladay-Sullivan
Johnson-Nicolai
Kittridge
Lents-Insley-Sellwood
Linnton
Marquam-Woods
Mill-Jefferson
Miller
Oak-Alder-Division
Outer East
Palatine
Rivergate
Riverside
Riverview
Saltzman
St. Johns
Stark
Stephens
Characterization
Habitat and Biological Communities
Infrastructure
Land Use and Population
Landscape and Hydrology
Stewardship
Water Quality
Bacteria
Conventional Water Quality Parameters
Metals
Organics & Pesticides
Other Considerations
CSO Pollutant Loading
Grid Model
Illicit Discharges Elimination Program (IDEP)
Industrial NPDES Permits
Stormwater Pollutant Loading
Underground Injection Controls (UICs)
Improvement Strategies
Implementation
Swan Island
Taggart
Tanner
Willamette River Downtown Segment
Willamette River Industrial Segment
Willamette River North Segment
Willamette River South Segment
Stephens
View
Balch
Beech-Essex-Wheeler
California
Carolina-Terwilliger
Doane
Fiske
Holladay-Sullivan
Johnson-Nicolai
Kittridge
Lents-Insley-Sellwood
Linnton
Marquam-Woods
Mill-Jefferson
Miller
Oak-Alder-Division
Outer East
Palatine
Rivergate
Riverside
Riverview
Saltzman
St. Johns
Stark
Stephens
Swan Island
Taggart
Tanner
Willamette River Downtown Segment
Willamette River Industrial Segment
Willamette River North Segment
Willamette River South Segment
Industrial NPDES Permits
In the Stephens Subwatershed, there is one active NPDES permit for a discharge within the subwatershed. The permit is a general permit for discharge of industrial stormwater from the RAZ Transportation Company on Bertha Boulevard (
also see Table 5
).
Maps & Files
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