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Stormwater Plan Review

  1. Departments
  2. Planning and Development
  3. Documents and Regulations
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Stormwater Plan Review

Stormwater Plan Review Menu

Stormwater Plan Review Documents & Regulations

Listed below are many of the documents from Gwinnett County that contain information concerning stormwater management. Many of these reports are also available at the Stormwater Plan Review Section office located at One Justice Square, 446 West Crogan Street in Lawrenceville. Please call 678.518.6000 if you have questions concerning any of these documents. Most of the documents listed below are in PDF format, thus Adobe Acrobat Reader is necessary to view the PDF files.

Unified Development Ordinance (UDO)

  • UDO Effective Date for Projects Submitted Memorandum (PDF)
  • UDO Effective Date for CDC Package and Bond Information (PDF)
  • Unified Development Ordinance (PDF)
  • Unified Development Ordinance Without the Appendix (PDF)
  • Unified Development Ordinance Amendment UDOA2020-00003 (Amendment to Certain Provisions of the UDO Concerning Stormwater Management) (PDF)

Design Manual for Developers


  • Gwinnett County Stormwater Management Manual – effective date December 10, 2020

  • Stormwater Quality Site Development Review Tool Documents
    • Excel Spreadsheet
    • User's Manual
  • Gwinnett County Storm Sewer Pipe Standards - effective date May 1, 2018

  • **Please note:   Development applications received on or after December 10, 2020, must meet the standards as established in the Gwinnett County Stormwater Management Manual and the Gwinnett County Storm Sewer Pipe Standards provided.

Miscellaneous Information

  • Watershed Basin Maps
  • Gwinnett County Code of Ordinances (Municode.com)
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