Stormwater Management Design Resources

Stormwater Management Design Guidance Drawings

MDOT SHA SWM Design Guidance Drawings (6-1-2022) (ZIP, 7.60 MB)

The zip file above contains the guidance drawings listed below.

Facility	Revision Date
Bioretention (F-6)	6-1-2022
Submerged Gravel Wetland (M-2)	6-1-2022
Micro-bioretention for well-drained soils (M-6)	6-1-2022
Micro-bioretention for poorly drained soils (M-6)	6-1-2022
Bio-swale for well-drained soils (M-8)	6-1-2022
Bio-swale for poorly drained soils (M-8)	6-1-2022
Grass Swale (M-8)	6-1-2022
Wet Swale (M-8)	6-1-2022

As-built Certification Data Tables

MDOT SHA SWM As-built Certification Data Tables (11-10-2022) (ZIP, 732KB)

The zip file above contains the data tables listed below. We recommend that you read the included PDF containing instructions for importing as-built certification data tables into MicroStation.

Stormwater Management As-Built Certification	Revision Date
MDOT SHA Plan Review Division	6-3-2021
MDE Code 378	6-3-2021

Facility	Revision Date
Bioretention (F-6)	10-22-2021
Submerged Gravel Wetland - Non-378 (M-2)	12-6-2021
Micro-bioretention (M-6)	10-25-2021
Rain Garden (M-7)	10-27-2021
Bio-swale (M-8 )	10-25-2021
Grass Swale (M-8)	6-3-2021
Wet Swale (M-8)	10-25-2021
Non-Rooftop Disconnect (N-2)	10-25-2021
Wet Swale (O-2)	10-25-2021
Dry Extended Detention Pond (P-X)	10-25-2021
Wet Pond (P-2)	10-25-2021
Check Dam	6-25-2021
Forebay	10-25-2021
Inlet	11-10-2022
Riser	6-16-2021
Weir	6-16-2021

Notice of Intent (NOI) Application

MDOT SHA projects with a limit of disturbance (LOD) of one acre and greater are required to obtain a permit for coverage under the General Permit for Stormwater Discharge Associated with Construction Activity, otherwise known as Maryland General Permit No. 20-CP. As part of that process, documents must be prepared and submitted to the Highway Hydraulics Division liaison for the project. The application and related files are contained in the zip file linked below.

MDOT SHA NOI Application (10-23-2023) (ZIP, 360 KB)

For additional information, please contact the assigned Highway Hydraulics Division liaison for your project or HHD@mdot.maryland.gov

Stormwater Management Design Resources

Stormwater Management​ Design Guidance Drawings

MDOT SHA SWM Design Guidance Drawings​ (6-1-2022) (ZIP, 7.60 MB​)

As-built Certification Data Tables​

MDOT SHA SWM As-built Certification Data Tables​​ (11-10-2022) (ZIP, 732KB)