Stormwater Atlas

City of Columbia

Stormwater Management & Water Quality Manual

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Open source PDF ↗Official agency page ↗

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No clear edition date on cover of extracted text; quantity design storms need deeper Ch. 2/6 pass. Pipeline excerpt repair removed 1 unlocated citation(s).

Fields not found in document: document_metadata.version_or_edition, document_metadata.adoption_or_effective_date, document_metadata.last_revised_date, design_criteria.design_storm_return_periods_years, design_criteria.required_hydrologic_hydraulic_software, document_metadata.relationship_to_state_manual
Other manuals in Missouri: City of Independence, City of Jefferson City, City of Springfield, City of St. Louis / Metropolitan St. Louis Sewer District, Mid-America Regional Council / Kansas City Metro APWA, Missouri

Document Metadata

Jurisdiction level
City

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State
Missouri

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Version / edition
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Adoption / effective date
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Last revised date
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Relationship to state manual
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Design Criteria

Design storm return periods (years)
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Water quality volume method
Water Quality Storm = event producing ≤90% of annual 24-hour stormwater runoff volume. WQv = storage to capture and treat 90% of average annual stormwater runoff volume = Water Quality Storm × volumetric runoff coefficient × site area. Channel protection detention and treatment-train BMPs; references APWA/MARC BMP Manual.

“Water Quality Volume (WQv): The storage needed to capture and treat 90 percent of the average annual stormwater runoff volume”

§1.6 Definitions

Peak flow calculation method(s)
Water quality hydrology methods (Ch. 2), Detention/retention methods (Ch. 6), Rational / unit peak discharge methods (figures)

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Hydrologic/hydraulic software
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Approved BMP categories
Bioretention, Grass swales, Retention and detention ponds, Extended detention wetland, Wet pond (permanent pool for WQv), Wetland treatment systems, Channel protection detention, Non-structural / treatment train practices

“Bioretention: Soil and plant-based stormwater management practices... structural (grass swales, terraces, retention and detention ponds, and others)”

Definitions / Background