Mississippi

Erosion Control, Sediment Control and Stormwater Management on Construction Sites and Urban Areas — Volume 2 Stormwater Runoff Management Manual

StateMississippihighNo

Open source PDF ↗Official agency page ↗

Fields not found in document: design_criteria.required_hydrologic_hydraulic_software

Document Metadata

Jurisdiction level

state

“Volume 2 Stormwater Runoff Management Manual”
Title Page

State

Mississippi

“Jackson, Mississippi”
Acknowledgments / Steering Committee

Version / edition

Published 2011

“Published 2011”
Title Page

Adoption / effective date

2011

“Published 2011”
Title Page

Last revised date

2011

“Published 2011”
Title Page

Relationship to state manual

independent

“Volume 2 – Stormwater Runoff Management Manual was created by adapting North Carolina's Stormwater Best Management Practices Manual (2007) with Mississippi-specific information where appropriate.”
Acknowledgments

Design Criteria

Design storm return periods (years)

1-year, 2-year, 5-year, 10-year, 25-year, 50-year

“the post-construction peak stormwater discharge rate must be reduced to no greater than the pre-construction peak stormwater discharge rate (usually for the 2-year, 24-hour storm).”
Chapter 1, Comparison of BMP Treatment Capabilities

Water quality volume method

Capture and treat a water quality volume typically equal to the first 1 inch or first 1.5 inches of rainfall, sized with Schueler's Simple Method (Appendix A). Recommended BMP-specific treatment volumes include: wet detention — first 0.5 inch of runoff or 1.5 inches from impervious area; dry retention and constructed wetlands — first 1.0 inch of runoff or 2.5 inches from impervious area (whichever is greater for dry retention).

“There will be a volume of stormwater that must be captured and treated prior to release (typically first 1 inch or first 1.5 inches of rainfall).”
Chapter 1, Comparison of BMP Treatment Capabilities

Peak flow calculation method(s)

SCS Runoff Curve Number Method, Short Cut Floodrouting Method (detention storage within method limits)

“Runoff volumes and rates may be calculated using the SCS Runoff Curve Number Method (see Appendix Volume, Appendix A, A-16).”
Additional Criteria, Detention Practice Criteria

Required hydrologic/hydraulic software

Not found in document

No evidence cited

Approved BMP categories

Planning (Conservation Easements, Open Space Design, Protection of Natural Features, Street Design, Urban Forestry, Redevelopment), Site Design (Alternative Turnarounds, Eliminating Curbs and Gutters, Green Parking, Green Roofs, Narrower Residential Streets, Riparian/Forested Buffer), Infiltration (Grassed Swales, Infiltration Basin, Infiltration Trench, Permeable Interlocking Concrete Pavement, Pervious Asphalt, Pervious Concrete), Filtration (Bioretention/Rain Gardens, Catch Basin Inserts, Sand and Organic Filters, Vegetated Filter Strip), Retention/Detention (Constructed Stormwater Wetland, Dry Detention Ponds, In-line Storage, Wet Pond), Manufactured Stormwater Treatment Systems

“Infiltration... Grassed Swales... Infiltration Basin... Infiltration Trench... Filtration... Bioretention (Rain Gardens)... Sand and Organic Filters... Retention/Detention... Constructed Stormwater Wetland... Dry Detention Ponds... Wet Pond”
Table of Contents, Chapter 4