Missouri

Missouri Guide to Green Infrastructure: Integrating Water Quality into Municipal Stormwater Management

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Compare each cited field to the official PDF before relying on it. What this means

PUB2446 is statewide GI/LID guidance for municipalities, not a conventional design manual with mandatory statewide sizing equations or required hydrologic methods/software. Return periods (1, 2, 10, 100) and the ~90% WQv / 0.5–1.5 inch small-storm framing are recommended or literature-cited guidance; local MSD checklist examples (e.g., 1-year 24-hour channel protection) appear only as case/reference material. SUSTAIN is mentioned as an optional planning tool, not a required model. No last-revised date beyond May 2012 publication.

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

Other manuals in Missouri: City of Columbia, 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

Document Metadata

Jurisdiction level

State

“This guide is designed to be useful across Missouri where there is a wide range of runoff conditions, soils, quality of receiving water, development practices and community values.”
Executive Summary

State

Missouri

“Missouri Department of Natural Resources”
Acknowledgements

Version / edition

PUB2446, May 2012

“PUB2446, May 2012”
Cover

Adoption / effective date

2012-05

“Published May 2012”
Preface / Disclaimer and Purpose

Last revised date

Not found in document

No evidence cited

Relationship to state manual

independent

“This guide is not a technical design manual; instead, it describes the processes and tools a community can use to develop sustainable site designs... The contents of this guide should not be interpreted as representing federal, state or local regulation.”
Preface / Disclaimer and Purpose

Design Criteria

Design storm return periods (years)

1-year, 2-year, 10-year, 100-year

“In the past, design criteria for a two year storm for channel protection was commonly used, however, now the recommended channel protection criteria is for the one year storm event. ... low impact development is capable of automatically controlling the 10 and 100-year storms through its primary strategy of restoring the built area's natural rainfall-runoff relationship.”
Chapter 1, Pages 15–16

Water quality volume method

Guidance (not hard statewide sizing): most common option uses a water quality volume based on water quality rain events that occur roughly 90% of the time, with SCMs designed to infiltrate, evapotranspire, or reuse runoff to the MEP; literature cited for Missouri-scale rainfall notes 0.5–1.5 inch events produce up to ~90% of annual runoff volume and ~75% of pollutant mass, with a typical one-inch channel-forming event for energy controls. Alternative option uses site-specific continuous simulation to mimic pre-construction runoff conditions.

“The first, and most common option, uses a concept sometimes referred to as "water quality volume." In this option, water quality rain events that occur roughly 90 percent of the time over a given period of record... stormwater control measures are designed, constructed and maintained to infiltrate, evapotranspire or reuse runoff to the maximum extent practical. ... Option two involves site-specific engineering analysis... Data can be applied in continuous simulation models”
Chapter 4, Section 4.1, Pages 102–103

Peak flow calculation method(s)

Not found in document

No evidence cited

Hydrologic/hydraulic software

Not found in document

No evidence cited

Approved BMP categories

Wet Ponds / Extended Wet Detention, Rain Gardens, Bioretention Areas, Infiltration Trenches and Basins, Dry Wells, Green Roofs, Cisterns / Storage Tanks (Rainwater Harvesting), Pervious Pavements, Tree Boxes / Tree Vaults, Bioswales (Vegetative Swales), Filter Strips, Grass Swales, Constructed Wetlands, Dry Basins / Multi-Chamber Catch Basins, Stream Buffers / Riparian Setbacks

“Examples include grass swales, filter strips, constructed wetlands, rain gardens and other bioretention practices. ... wet ponds, dry basins, or multi-chamber catch basins ... infiltration basins, subsurface trenches and pervious pavements. Chapter 6 practices include Green Roofs, Cisterns/Storage Tanks, Rain Gardens, Infiltration Trenches, Dry wells, Pervious Pavements, Tree Box and Tree Vault, Bioretention, Bioswales (Vegetative Swales), Filter strips, Wet Ponds, Constructed Wetlands.”
Chapter 3, Section 3.1; Chapter 6