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N.C. Department of Environment and Natural Resources

NC Department of Environment and Natural Resources
Water Quality - GIS Info & Interactive Map

Water Quality

Web Content Display Web Content Display

Stormwater Maps and GIS Resources

Stormwater Permitting Interactive MapStormwater GIS Data and Maps ♦ Impaired Waters & TMDL Map

Stormwater Permitting Interactive Map Viewer

The Division maintains an interactive web-based map to help the public determine whether development activities are subject to the post-construction permitting program or other stormwater permitting requirements.  Please read the information about using the results of this map viewer.  While we do our best to make the map as accurate as possible, this viewer is simply a tool to help you in making your final determination about your responsibilities for permit coverage.

Important Updates and Corrections (as of Feb 4, 2013) | Disclaimer and Map FAQ 
Guide to areas that MAY NOT DISPLAY PROPERLY on map viewer (new)

Boundary updates, including 2010 Census Urbanized Areas, were posted to the Map Viewer on February 4, 2013.  Revisions to MSIs with 2010 Census population will follow at a later date.

Stormwater Permitting Interactive Map

Please read this information about map results Guidance on overlapping programs
  Map Tutorial and FAQ

Post-Construction Permit Application

Post-Construction Information

Phase II Entity Designations and Updates
Phase II Tipped Counties (list) (map)
Phase II Areas (map)
Delegated Authorities
Urbanized Areas (2010 Census - US Map)
Special Watersheds in Mecklenburg and Union Counties (map)

HQW, ORW, and WS Reclassifications

There may bewaterbodies that have either recently been reclassified as HQW, ORW, or Water Supply, or are pending reclassificaiton.  These areas are not reflected in the current interactive map.  Those watersheds may now be subject to local or State Stormwater Program requirements.  Be sure to check with the Classification and Standards Unit website for updates.

♦ See a list of all Proposed Reclassifications

Stormwater GIS Data and Maps

GIS Data

SW Permitting Reference GIS layer for Map Viewer:  updated layer posted February 4, 2013.  For additional information, contact Bethany Georgoulias
ERRATA Sheet (SW Permitting Reference GIS), February 11, 2013
Phase II Areas in N.C. (Revised 2/11/2013).  This layer includes newer urbanized areas from the 2010 US Census and more recent jurisdictional boundaries.  This layer does NOT include MSIs that were delineated by the EMC in 2010 ("future MSIs") and may not yet be in effect.  Please check here for updates on those areas.  

Miscellaneous Maps

Stormwater Programs Map
Link to EPA website about new Urbanized Areas (2010 Census)

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