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Stormwater Design Manual

Updates to help with construction process and meeting current development requirements


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New Design Manual Old Design Manuals Approval Process and Timeline Previous Drafts

New Design Manual

The City of Raleigh Stormwater Design Manual and associated UDO text changes will become effective on Saturday, November 2, 2024. Plans submitted after that date will be required to follow the new Manual and the revised UDO.

Training for the new design manual was hosted by Raleigh stormwater staff for home builders and designers. Watch the training recordings.

Old Design Manuals

There are two manuals in effect in the City of Raleigh through November 1, 2024:

  1. Stormwater Design Manual (2002)
  2. Guidelines for Land Disturbing Activity (2013)

These manuals will remain in effect through November 1, 2024, with the following exceptions:

  • The above manuals do not contain information and guidance regarding the new Neuse Nutrient Rules, which become effective on May 1, 2023.
  • The new Neuse Rules also require use of the State’s Minimum Design Criteria (MDCs) for stormwater control measure design. Therefore, the NCDEQ Stormwater Design Manual replaces Chapter 3.2 of the City’s 2002 Stormwater Design Manual.

Approval Process and Timeline

The Stormwater Design Manual is incorporated into the City’s Unified Development Ordinance (UDO) by reference; therefore, changes must be approved by the City Council. The Stormwater Design Manual was be presented to the Stormwater Management Advisory Commission (SMAC), most recently in January 2024.  Before reaching City Council, the Manual will be discussed by the and the Planning Commission and their Text Change Committee.

DATE ACTIVITY
December 2023 & January 2024 Presented manual to SMAC
April 17, 2024 Presented manual to Planning Commission Text Change Committee
June 25, 2024 Presented manual to Planning Commission
September 3, 2024 Presented manual to City Council
September 30 & October 1, 2024 Training for Home Builders and Designers
 November 2, 2024 Manual Effective

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