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Minnesota Stormwater Manual

Whether you’re new to stormwater or you’ve been working in the field for years, you’ll find the Minnesota Stormwater Manual has what you’re looking for. The first half of the Manual is dedicated to the general Minnesota context for stormwater management.

The second half of the manual, which includes many diagrams and formulas, is intended mainly for professionals—but homeowners should find useful content as well.

The Stormwater Manual:

• Serves as a valuable resource for professional stormwater managers
• Welcomes newcomers to the stormwater field
• Provides practical stormwater management practices is reviewed and edited regularly
• Exists because of the continuing efforts of the Stormwater Steering Committee

Stormwater Manual (Version 2)

• Minnesota Stormwater Manual (file size = 25 MB - please note that this is a large file and may take some time to download.)

Engineering Details

The following AutoCAD engineering details are available as .dwg files for stormwater engineers. The details are also available in the Stormwater Manual as PDF files. The engineering details are intended as starting-off points for engineers—they do not accomodate site-specific conditions.

Bioretention BMPs

• Bioretention BMPs. This file contains the following designs: Infiltration/Recharge Cross Section, Filtration/Partial Recharge Cross Section, Infiltration/Filtration Cross Section, and Filtration Only Cross Section.

Filtration BMPs

• Dry Swale Cross Section
• Perimeter Sand Filter
• Surface Sand Filter
• Underground Sand Filter

Infiltration BMPs

• Infiltration BMPs: This file contains the following designs: Infiltration Trench Cross Section, Infiltration Basin Plan, and Infiltration Subsurface Plan and Profile.

Pond and Wetland BMPs

• Pond and Wetland BMPs: This file contains the following designs: Pond Plan and Profile, Extended Detention Plan and Profile, Outlet Structure Details, and Shallow Wetland Plan and Profile.

Issue Papers

• Issue Paper A: Best Management Practices (BMP) List and Selection Matrix
• Issue Paper B: Precipitation Frequency Analysis
• Issue Paper C: Stormwater Regulatory Framework
  • Overlaps and Gaps – Results of Selected Interviews, Stormwater Regulatory Framework Supplement to Issue Paper C
• Issue Paper D: Unified Sizing Criteria for Minnesota  (file size = 1.5 MB)
• Issue Paper E: Receiving Water Based Stormwater Criteria
• Issue Paper F: Stormwater Credits
• Issue Paper G: Cold Climate Considerations for Surface Water Management
• Issue Paper H: Potential Stormwater Hotspots, Pollution Prevention, Groundwater Concerns, and Related Issues
• Issue Papers I and J – BMP Fact Sheets and Engineering Specifications Part 1
• Issue Papers I and J – BMP Fact Sheets and Engineering Specifications Part 1