Maryland’s stormwater framework combines MDE oversight with local stormwater authority programs (counties and incorporated municipalities). Requirements vary by jurisdiction, project type, and whether a site is industrial, municipal, or private development.
Where to Start (Official)
- MDE — Stormwater Management Program for statewide design manual, MS4, and construction stormwater information.
- Your local stormwater authority for maintenance standards, inspection forms, and enforcement contacts.
- Maryland Stormwater Design Manual for performance standards and BMP design criteria.
What Property Teams Typically Maintain
- BMPs listed on approved plans: ponds, micro-bioretention, underground systems, and proprietary devices.
- Access easements and drainage rights-of-way needed for inspection and repair.
- Industrial stormwater controls tied to sector-specific permit conditions.
Disclaimer
Maryland Stormwater is not a government agency and does not interpret regulations on behalf of MDE or any locality. This page is for orientation only; rely on official sources for binding requirements.
