Stormwater Management

  1. Stormwater Management Plan
  2. Neuse Buffer Rules
  3. Non-Neuse Buffers
  4. Surface Water Identification
  5. Stormwater Pollution
  6. Open Burning

Stormwater Management Plan

Section 6.14: “Stormwater Management” of the Orange County Unified Development Ordinance (UDO) states that a Stormwater Management Plan must also be submitted for any new development or land-disturbing activity exceeding the thresholds noted in the Watershed Matrix Table.  The requirements apply to all new development within the Orange County planning jurisdiction, including private, public, state, and federal development not covered by a separate NPDES permit. 

Stormwater Management Plans must address the following:

  • Protection of riparian areas;
  • Nitrogen and phosphorus load contributions;
  • Peak flow attenuation for the 1-year, 24-hour storm;
  • Control and treatment of runoff generated by one inch of rainfall from all project area surfaces;
  • Engineered Primary and Secondary Stormwater Control Measures (SCMs) as outlined in the NC Department of Environmental Quality Minimum Design Criteria (MDC) Manual 


Note: Regulation of any standards for the removal of nutrient exports within the Jordan Lake Watershed are currently under review and have been delayed.   Currently, Orange County only has the regulatory authority to regulate stormwater quantity within this watershed.