Stormwater Management and Design Guidance Manual

West Virgina Department of Environmental Protection recently released the Stormwater Management and Design Guidance Manual. You can download the entire manual from this website. This manual provides design and guidance on designing and implementing stormwater management practices that will manage rainfall on site in accordance with West Virginia's small Municipal Separate Storm Sewer System (MS4) general permit.

This manual contains stormwater management practices that utilize the Runoff Reduction Method, which is a method that utilizes infiltration, harvesting and evapotranspiration of rainfall on site. For more information about the runoff reduction method see the Additiona Information section.

Erratum Notice: If you find errors or broken links please email Jeff Smith with that information.

The first file below is the entire manual in PDF format. It is a large file and may take time to download depending on your internet connection speed. The files beneath the first one are separated by Chapter, and the individual stormwater management practices are each provided in their own file.

• Stormwater Management and Design Guidance Manual - Entire Document
• Chapter 1 - Introduction
• Chapter 2 - West Virginia Stormwater Regulatory Framework
• Chapter 3 - Best Management Practice Selection and Design Methodology
• Chapter 4 - Stormwater BMP Specifications
• Chapter 4.1 - Self Crediting Better Site Design Practices
• Chapter 4.2.1 - Sheet Flow to Vegetated Filter Strips and Conservation Areas
• Chapter 4.2.2 - Impervious Surface Disconnection
• Chapter 4.2.3 - Bioretention

• Chapter 4.2.4 - Permeable Pavement
• Chapter 4.2.5 - Grass Swales
• Chapter 4.2.6 - Infiltration
• Chapter 4.2.7 - Regenerative Stormwater Conveyance System
• Chapter 4.2.8 - Rainwater Harvesting
• Chapter 4.2.9 - Vegetated Roots
• Chapter 4.2.10 - Filtration Practices
• Chapter 4.2.11 - Stormwater Wetlands
• Chapter 5 - Stormwater Hotspots

• Chapter 6 - Design Examples
• Appendix A - Plan Review, Construction, and Maintenance Checklists
• Appendix B - Infiltration and Soil Testing
• Appendix C - Stormwater Management Design in Karst Areas
• Appendix D - Soil Amendments
• Appendix E - Treatment Volume Peak Flow Rate
• Appendix F - BMP Landscaping Plants
• Appendix G - Resources for Design of Wet and Dry Ponds
• Appendix H - Considerations for Impaired Waters