Some residents in Orange County have properties that are located within the Lake Orange Dam "inundation zone." The "inundation zone" is the area downstream of the dam that would be flooded in the event of a failure (breach) or uncontrolled release of water. These zones are generally much larger than the area for the normal river or stream flood event. The inundation zone maps for Lake Orange can be viewed and downloaded at link below.
Updates & Inspections
The dam is owned and maintained by Orange County and is inspected regularly to ensure its safety. The Orange County Planning and Emergency Services departments have updated the Lake Orange Emergency Action Plan, which includes maps and evacuation routes for affected areas, in the highly unlikely event of a breach or failure.
Orange County Emergency Services, in conjunction with the Chapel Hill, Carrboro and OWASA, have partnered on an emergency notification system that provides almost real-time updates during emergency situations, such as extreme weather events, unexpected road closures or other issues that threaten public safety. The OC Alerts system will attempt to notify you via email, text message or phone calls. To sign up for OC Alerts, visit us on the web.
Lake Orange Maps
View the following maps to see if your residence falls within the inundation zone. Residents in the inundation zone are urged to familiarize themselves with the evacuation route for their area. In the unlikely event of a dam failure incident, affected residents will be asked by Emergency Response Officials to evacuate the affected area in compliance with the Emergency Action Plan.
- Lake Orange Inundation Zone Maps
- Evacuation Zones and Evacuation Routes - Overview Map (see Evacuation Route Maps for greater detail).
- Evacuation Routes A&B (Lake Orange Road to NC 86 and Efland Cedar Grove Road to U.S. 70 or Highland Farm Road to NC 86)
- Evacuation Routes C&D (Highland Farm Road to NC 86 or Brookhollow Road to U.S. 70)
- Evacuation Routes E, F, G, H, & I (Downtown Hillsborough Area)
For More Information: