City of Everett
Stormwater Management Manual for Western Washington (Ecology 2024; city MS4)
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Compare each cited field to the official PDF before relying on it. What this means
Municipality coverage via Ecology SWMMWW (Vancouver/Bellevue western WA pattern). Prefer city drainage manual if a durable public PDF is later found.
Fields not found in document: design_criteria.water_quality_volume_method
Other manuals in Washington: City of Bellevue, City of Bellingham, City of Kennewick, City of Lacey, City of Olympia, City of Seattle, City of Seattle, City of Tacoma, City of Vancouver, King County, Spokane County / City of Spokane / City of Spokane Valley, Washington, Washington State Department of Transportation (WSDOT)
Document Metadata
Jurisdiction level
City
No evidence cited
State
Washington
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Version / edition
2024 Edition
No evidence cited
Adoption / effective date
2024-07
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Last revised date
2024-07
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Relationship to state manual
adopts state manual directly
“adopts_state_manual_directly — Ecology SWMMWW 2024”
Coverage note
Design Criteria
Design storm return periods (years)
2-year, 10-year, 25-year, 50-year, 100-year
No evidence cited
Water quality volume method
Not found in document
No evidence cited
Peak flow calculation method(s)
Continuous Simulation Models, WWHM / HSPF, Single Event Hydrograph Method, SBUH / SCS / NRCS methods (as allowed)
No evidence cited
Hydrologic/hydraulic software
WWHM, HSPF
No evidence cited
Approved BMP categories
Flow Control BMPs, Runoff Treatment BMPs, LID BMPs, Source Control BMPs, Infiltration / bioretention
No evidence cited