Stormwater Atlas

City of Eugene

Stormwater Management Manual

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Eugene 2025 SWMM with appendices. Pipeline excerpt repair removed 2 unlocated citation(s).

Fields not found in document: design_criteria.design_storm_return_periods_years, design_criteria.required_hydrologic_hydraulic_software, document_metadata.version_or_edition, document_metadata.last_revised_date

Document Metadata

Jurisdiction level
City

City of Eugene

Title

State
Oregon

Oregon / Eugene Code

1.1

Version / edition
Not found in document

No evidence cited

Adoption / effective date
2025-07-01

Eugene Code as in effect on July 1, 2025

Appendix A / intro

Last revised date
Not found in document

No evidence cited

Relationship to state manual
independent

Eugene Code 9.6790 Stormwater Development Standards

1.1

Design Criteria

Design storm return periods (years)
Not found in document

No evidence cited

Water quality volume method
Implements Eugene Code 9.6790–9.6797 standards for flood control, stormwater quality (pollution reduction facilities sized to Water Quality Design Storm), oil control for high-risk vehicle areas, and flow control. Facility selection/design in Chapters 2–3; flood control design storm tables in Appendix K; water quality design storm development in Appendix L.

STORMWATER QUALITY / Water Quality Design Storm

1.7 / Appendix L

Peak flow calculation method(s)
Flood control design methodologies (on-site / off-site facilities), Flow control methodologies, Water quality facility selection and design, Underground Injection Control (UIC) constraints where applicable

STORMWATER FLOOD CONTROL / FLOW CONTROL

1.6 / 1.9

Hydrologic/hydraulic software
Not found in document

No evidence cited

Approved BMP categories
Stormwater quality / pollution reduction facilities, Flow control facilities, Flood control facilities, Oil control facilities, Infiltration / UIC facilities

Stormwater quality / oil control / flow control / flood control facilities

Chapter 1 TOC