Stormwater Stormwater Design Manual Learn how to implement stormwater control measures to treat or limit pollutants and other damaging effects of stormwater runoff. View the Manual Construction Stormwater General Permit Renewal The N.C. Stormwater Program is renewing and updating the NCG01 Construction General Permit this year. Learn More Industrial Stormwater Permitting The state's federally mandated National Pollutant Discharge Elimination System, or NPDES, Industrial Stormwater Program covers a wide variety of industrial activities . Learn More Stormwater Program Overview The Stormwater Permitting Program develops, plans and implements statewide stormwater control policies, strategies and rules to protect surface waters of North Carolina from the impacts of stormwater pollutants and runoff. Learn more. Stormwater Program Overview Stormwater Learn about the stormwater permitting program. Post-Construction Stormwater Stormwater Learn about post-construction stormwater requirements. MS4 Permitting Stormwater Phase I and II. Flooding Guidance Stormwater Learn about where to direct concerns about flooding. Water Supply Watershed Program Stormwater Learn about the Water Supply Watershed Program. Stormwater Maps & Permit Data Stormwater Find interactive stormwater maps and permit data. Stormwater Regulations Rules and regulations that govern stormwater. Industrial Stormwater Program Learn about the NPDES Industrial Stormwater Program Construction Stormwater Program Learn about the NPDES Construction Stormwater Program. Contact Us Contact the stormwater staff. Stormwater Public Notices Calendar of public notices and hearings. Training & Outreach Find stormwater training & outreach opportunities.