Stormwater Atlas

City of Lansing

Stormwater Management Design Manual

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Extracted from Lansing Stormwater Management Design Manual PDF text; truncated tables/layout noise; EGLE 0.9" WQv is clear.

Fields not found in document: document_metadata.version_or_edition

Document Metadata

Jurisdiction level
City

No evidence cited

State
Michigan

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Version / edition
Not found in document

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Adoption / effective date
Not found in document

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Last revised date
Not found in document

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Relationship to state manual
independent

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Design Criteria

Design storm return periods (years)
1-year, 2-year, 10-year, 50-year, 100-year

Channel Protection Up to and including the 2-year 24-hour; Collection System 10-year / 50-year 24-hour

Performance criteria table

Water quality volume method
EGLE-designated Lansing-area water quality treatment volume from 0.9 inches of rainfall (producing storms). Treat by retaining the WQ volume, capturing it in an SCM then filtering/releasing, or filtering continuously. Channel protection applies up to the 2-year 24-hour storm (post ≤ pre volume and peak). Collection system: 10-year 24-hour (non-sag) / 50-year 24-hour (sag).

producing storms, which for the Lansing area has been designated by EGLE to be 0.9 inches of rainfall

Water Quality Treatment Volume

Peak flow calculation method(s)
Water quality treatment volume (0.9 in), Channel protection (2-year 24-hour post ≤ pre), Collection system peak (10-/50-year), SDST User's Manual example methods

No evidence cited

Hydrologic/hydraulic software
Not found in document

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Approved BMP categories
Stormwater control measures (SCMs), Retention / infiltration, Filtration SCMs, Detention / flood control SCMs, Bioretention / vegetated practices

No evidence cited